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Alcantara M, Barnett-Tapia C, Bril V, Mannan S, Shabanpour J, Riaz S, Ng E, Ryan C, Katzberg H. Office-based respiratory assessment in patients with generalized myasthenia gravis. Neuromuscul Disord 2024; 40:1-6. [PMID: 38776756 DOI: 10.1016/j.nmd.2024.05.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2024] [Revised: 05/07/2024] [Accepted: 05/09/2024] [Indexed: 05/25/2024]
Abstract
Patients with myasthenia gravis (MG) can present with respiratory dysfunction, ranging from exercise intolerance to overt respiratory failure, increased fatigue, or sleep-disordered breathing. To investigate the value of multiple respiratory tests in MG, we performed clinical and respiratory assessments in patients with mild to moderate generalized disease. One-hundred and thirty-six patients completed the myasthenia gravis quality-of-life score(MG-QOL-15), myasthenia gravis impairment index(MGII), Epworth sleepiness scale(ESS), University of California-San Diego Shortness of Breath Questionnaire(UCSD-SOB), Modified Medical Research Council Dyspnea Scales(MRC-DS), supine and upright forced vital capacity(FVC), maximal inspiratory pressures(MIPs) and sniff nasal inspiratory pressures(SNIP). Seventy-three (54 %) had respiratory and/or bulbar symptoms and 45 (33 %) had baseline abnormal FVC, with no significant postural changes (p = 0.89); 55 (40.4 %) had abnormal MIPs and 50 (37 %) had abnormal SNIPs. Overall, there were low scores on respiratory and disability scales. Females had increased odds of presenting with abnormal FVC (OR 2.89, p = 0.01) and MIPs (OR 2.48, p = 0.022). There were significant correlations between MIPs, FVC and SNIPs; between MGII/MG-QOL15 and UCSD-SOB/MRC-DS and between ESS and respiratory scales in the whole group. Our data suggests that office-based respiratory measurements are a useful screening method for stable MG patients, even when presenting with minimal respiratory symptoms and no significant disability.
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Affiliation(s)
- Monica Alcantara
- Department of Medicine, Division of Neurology, Prosserman Family Neuromuscular clinic, University of Toronto, Toronto, Ontario, Canada
| | - Carolina Barnett-Tapia
- Department of Medicine, Division of Neurology, Prosserman Family Neuromuscular clinic, University of Toronto, Toronto, Ontario, Canada
| | - Vera Bril
- Department of Medicine, Division of Neurology, Prosserman Family Neuromuscular clinic, University of Toronto, Toronto, Ontario, Canada
| | - Shabber Mannan
- Department of Medicine, Division of Neurology, Prosserman Family Neuromuscular clinic, University of Toronto, Toronto, Ontario, Canada
| | - Jafar Shabanpour
- Department of Medicine, Division of Neurology, Prosserman Family Neuromuscular clinic, University of Toronto, Toronto, Ontario, Canada
| | - Sarah Riaz
- Department of Medicine, Division of Neurology, Prosserman Family Neuromuscular clinic, University of Toronto, Toronto, Ontario, Canada
| | - Eduardo Ng
- Department of Medicine, Division of Neurology, Prosserman Family Neuromuscular clinic, University of Toronto, Toronto, Ontario, Canada
| | - Clodagh Ryan
- Department of Medicine, Division of Respirology, University of Toronto, Toronto, Ontario, Canada
| | - Hans Katzberg
- Department of Medicine, Division of Neurology, Prosserman Family Neuromuscular clinic, University of Toronto, Toronto, Ontario, Canada.
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Becker AE, Dixon KL, Kirschen MP, Conlon TW, Glau CL. Advances in Point-of-Care Ultrasound in Pediatric Acute Care Medicine. Indian J Pediatr 2024:10.1007/s12098-024-05180-4. [PMID: 38842749 DOI: 10.1007/s12098-024-05180-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2024] [Accepted: 05/21/2024] [Indexed: 06/07/2024]
Abstract
Pediatric point-of-care ultrasonography (POCUS) has grown in utilization and is now an integral part of pediatric acute care. Applications within the pediatric critical care, neonatology and pediatric emergency were once limited to evaluation of undifferentiated shock states, abdominal free fluid assessments in trauma resuscitation and procedural guidance. The body of pediatric POCUS literature is ever expanding and recently published international consensus guidelines are available to guide implementation into clinical practice. The authors present a review of emerging applications and controversies within thoracic, hemodynamic, neurologic, and ocular POCUS in pediatric acute care medicine.
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Affiliation(s)
| | | | - Matthew P Kirschen
- Children's Hospital of Philadelphia, Philadelphia, PA, USA
- Department of Anesthesiology and Critical Care Medicine, The University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Thomas W Conlon
- Children's Hospital of Philadelphia, Philadelphia, PA, USA
- Department of Anesthesiology and Critical Care Medicine, The University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Christie L Glau
- Children's Hospital of Philadelphia, Philadelphia, PA, USA.
- Department of Anesthesiology and Critical Care Medicine, The University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA.
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Bendstrup E, Lynn E, Troldborg A. Systemic Lupus Erythematosus-related Lung Disease. Semin Respir Crit Care Med 2024; 45:386-396. [PMID: 38547915 DOI: 10.1055/s-0044-1782653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/24/2024]
Abstract
Systemic Lupus Erythematosus (SLE) is a multifaceted, multisystem autoimmune disorder with diverse clinical expressions. While prevalence reports vary widely, pulmonary involvement accounts for significant morbidity and mortality in SLE. This comprehensive review explores the spectrum of pulmonary disease in SLE, including upper airway manifestations (e.g., laryngeal affection), lower airway conditions (e.g., bronchitis, bronchiolitis, bronchiectasis), parenchymal diseases (e.g., interstitial lung disease, acute lupus pneumonitis, diffuse alveolar hemorrhage), pleural diseases (e.g., serositis, shrinking lung syndrome), and vascular diseases (e.g., pulmonary arterial hypertension, pulmonary embolism, acute reversible hypoxemia syndrome). We discuss diagnostic modalities, treatment strategies, and prognosis for each pulmonary manifestation. With diagnostics remaining a challenge and with the absence of standardized treatment guidelines, we emphasize the need for evidence-based guidelines to optimize patient care and improve outcomes in this complex disease.
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Affiliation(s)
- Elisabeth Bendstrup
- Center for Rare Lung Disease, Department of Respiratory Diseases and Allergy, Aarhus University Hospital, Aarhus, Denmark
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Evelyn Lynn
- Department of Respiratory Medicine, St. Vincent's University Hospital, Dublin, Ireland
- School of Medicine, University College Dublin, Dublin, Ireland
| | - Anne Troldborg
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
- Department of Rheumatology, Aarhus University Hospital, Aarhus, Denmark
- Biomedicine, Aarhus University, Aarhus, Denmark
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Keyes S, Spouge RJ, Kennedy P, Rai S, Abdellatif W, Sugrue G, Barrett SA, Khosa F, Nicolaou S, Murray N. Approach to Acute Traumatic and Nontraumatic Diaphragmatic Abnormalities. Radiographics 2024; 44:e230110. [PMID: 38781091 DOI: 10.1148/rg.230110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
Acute diaphragmatic abnormalities encompass a broad variety of relatively uncommon and underdiagnosed pathologic conditions, which can be subdivided into nontraumatic and traumatic entities. Nontraumatic abnormalities range from congenital hernia to spontaneous rupture, endometriosis-related disease, infection, paralysis, eventration, and thoracoabdominal fistula. Traumatic abnormalities comprise both blunt and penetrating injuries. Given the role of the diaphragm as the primary inspiratory muscle and the boundary dividing the thoracic and abdominal cavities, compromise to its integrity can yield devastating consequences. Yet, diagnosis can prove challenging, as symptoms may be vague and findings subtle. Imaging plays an essential role in investigation. Radiography is commonly used in emergency evaluation of a patient with a suspected thoracoabdominal process and may reveal evidence of diaphragmatic compromise, such as abdominal contents herniated into the thoracic cavity. CT is often superior, in particular when evaluating a trauma patient, as it allows rapid and more detailed evaluation and localization of pathologic conditions. Additional modalities including US, MRI, and scintigraphy may be required, depending on the clinical context. Developing a strong understanding of the acute pathologic conditions affecting the diaphragm and their characteristic imaging findings aids in efficient and accurate diagnosis. Additionally, understanding the appearance of diaphragmatic anatomy at imaging helps in differentiating acute pathologic conditions from normal variations. Ultimately, this knowledge guides management, which depends on the underlying cause, location, and severity of the abnormality, as well as patient factors. ©RSNA, 2024 Supplemental material is available for this article.
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Affiliation(s)
- Sarah Keyes
- From the Department of Medicine, University of British Columbia, Vancouver, British Columbia, Canada (S.K., R.J.S., S.R., G.S., S.A.B., F.K., S.N., N.M.); Department of Radiology, Vancouver General Hospital, Jim Pattison Pavilion South, 899 W 12th Ave, Room G861, Vancouver, BC, Canada V5Z 1M9 (R.J.S., P.K., S.R., G.S., S.A.B., F.K., S.N., N.M.); and Department of Radiology, University of Texas Southwestern Medical Center, Dallas, Tex (W.A.)
| | - Rebecca J Spouge
- From the Department of Medicine, University of British Columbia, Vancouver, British Columbia, Canada (S.K., R.J.S., S.R., G.S., S.A.B., F.K., S.N., N.M.); Department of Radiology, Vancouver General Hospital, Jim Pattison Pavilion South, 899 W 12th Ave, Room G861, Vancouver, BC, Canada V5Z 1M9 (R.J.S., P.K., S.R., G.S., S.A.B., F.K., S.N., N.M.); and Department of Radiology, University of Texas Southwestern Medical Center, Dallas, Tex (W.A.)
| | - Padraic Kennedy
- From the Department of Medicine, University of British Columbia, Vancouver, British Columbia, Canada (S.K., R.J.S., S.R., G.S., S.A.B., F.K., S.N., N.M.); Department of Radiology, Vancouver General Hospital, Jim Pattison Pavilion South, 899 W 12th Ave, Room G861, Vancouver, BC, Canada V5Z 1M9 (R.J.S., P.K., S.R., G.S., S.A.B., F.K., S.N., N.M.); and Department of Radiology, University of Texas Southwestern Medical Center, Dallas, Tex (W.A.)
| | - Shamir Rai
- From the Department of Medicine, University of British Columbia, Vancouver, British Columbia, Canada (S.K., R.J.S., S.R., G.S., S.A.B., F.K., S.N., N.M.); Department of Radiology, Vancouver General Hospital, Jim Pattison Pavilion South, 899 W 12th Ave, Room G861, Vancouver, BC, Canada V5Z 1M9 (R.J.S., P.K., S.R., G.S., S.A.B., F.K., S.N., N.M.); and Department of Radiology, University of Texas Southwestern Medical Center, Dallas, Tex (W.A.)
| | - Waleed Abdellatif
- From the Department of Medicine, University of British Columbia, Vancouver, British Columbia, Canada (S.K., R.J.S., S.R., G.S., S.A.B., F.K., S.N., N.M.); Department of Radiology, Vancouver General Hospital, Jim Pattison Pavilion South, 899 W 12th Ave, Room G861, Vancouver, BC, Canada V5Z 1M9 (R.J.S., P.K., S.R., G.S., S.A.B., F.K., S.N., N.M.); and Department of Radiology, University of Texas Southwestern Medical Center, Dallas, Tex (W.A.)
| | - Gavin Sugrue
- From the Department of Medicine, University of British Columbia, Vancouver, British Columbia, Canada (S.K., R.J.S., S.R., G.S., S.A.B., F.K., S.N., N.M.); Department of Radiology, Vancouver General Hospital, Jim Pattison Pavilion South, 899 W 12th Ave, Room G861, Vancouver, BC, Canada V5Z 1M9 (R.J.S., P.K., S.R., G.S., S.A.B., F.K., S.N., N.M.); and Department of Radiology, University of Texas Southwestern Medical Center, Dallas, Tex (W.A.)
| | - Sarah A Barrett
- From the Department of Medicine, University of British Columbia, Vancouver, British Columbia, Canada (S.K., R.J.S., S.R., G.S., S.A.B., F.K., S.N., N.M.); Department of Radiology, Vancouver General Hospital, Jim Pattison Pavilion South, 899 W 12th Ave, Room G861, Vancouver, BC, Canada V5Z 1M9 (R.J.S., P.K., S.R., G.S., S.A.B., F.K., S.N., N.M.); and Department of Radiology, University of Texas Southwestern Medical Center, Dallas, Tex (W.A.)
| | - Faisal Khosa
- From the Department of Medicine, University of British Columbia, Vancouver, British Columbia, Canada (S.K., R.J.S., S.R., G.S., S.A.B., F.K., S.N., N.M.); Department of Radiology, Vancouver General Hospital, Jim Pattison Pavilion South, 899 W 12th Ave, Room G861, Vancouver, BC, Canada V5Z 1M9 (R.J.S., P.K., S.R., G.S., S.A.B., F.K., S.N., N.M.); and Department of Radiology, University of Texas Southwestern Medical Center, Dallas, Tex (W.A.)
| | - Savvas Nicolaou
- From the Department of Medicine, University of British Columbia, Vancouver, British Columbia, Canada (S.K., R.J.S., S.R., G.S., S.A.B., F.K., S.N., N.M.); Department of Radiology, Vancouver General Hospital, Jim Pattison Pavilion South, 899 W 12th Ave, Room G861, Vancouver, BC, Canada V5Z 1M9 (R.J.S., P.K., S.R., G.S., S.A.B., F.K., S.N., N.M.); and Department of Radiology, University of Texas Southwestern Medical Center, Dallas, Tex (W.A.)
| | - Nicolas Murray
- From the Department of Medicine, University of British Columbia, Vancouver, British Columbia, Canada (S.K., R.J.S., S.R., G.S., S.A.B., F.K., S.N., N.M.); Department of Radiology, Vancouver General Hospital, Jim Pattison Pavilion South, 899 W 12th Ave, Room G861, Vancouver, BC, Canada V5Z 1M9 (R.J.S., P.K., S.R., G.S., S.A.B., F.K., S.N., N.M.); and Department of Radiology, University of Texas Southwestern Medical Center, Dallas, Tex (W.A.)
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Lallement P, Boussuges A, Habert P, Bermudez J, Reynaud-Gaubert M, Delliaux S, Bregeon F, Coiffard B. Evaluation of computed tomography in the diagnosis of ultrasound-proven diaphragm dysfunction. Respir Res 2024; 25:135. [PMID: 38509592 PMCID: PMC10956268 DOI: 10.1186/s12931-024-02770-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Accepted: 03/13/2024] [Indexed: 03/22/2024] Open
Abstract
INTRODUCTION Computed tomography (CT) is routinely employed on the evaluation of dyspnea, yet limited data exist on its assessment of diaphragmatic muscle. This study aimed to determine the capability of CT in identifying structural changes in the diaphragm among patients with ultrasound-confirmed diaphragmatic dysfunction. METHODS Diaphragmatic ultrasounds conducted between 2018 and 2021 at our center in Marseille, France, were retrospectively collected. Diaphragmatic pillars were measured on CT scans at the L1 level and the celiac artery. Additionally, the difference in height between the two diaphragmatic domes in both diaphragmatic dysfunction cases and controls was measured and compared. RESULTS A total of 65 patients were included, comprising 24 with diaphragmatic paralysis, 13 with diaphragmatic weakness, and 28 controls. In the case group (paralysis and weakness) with left dysfunctions (n = 24), the CT thickness of the pillars at the level of L1 and the celiac artery was significantly thinner compared with controls (2.0 mm vs. 7.4 mm and 1.8 mm vs. 3.1 mm, p < 0.001 respectively). Significantly different values were observed for paralysis (but not weakness) in the right dysfunction subgroup (n = 15) (2.6 mm vs. 7.4 mm and 2.2 mm vs. 3.8 mm, p < 0.001 respectively, for paralysis vs. controls). Regardless of the side of dysfunction, a significant difference in diaphragmatic height was observed between cases and controls (7.70 cm vs. 1.16 cm and 5.51 cm vs. 1.16 cm, p < 0.001 for right and left dysfunctions, respectively). Threshold values determined through ROC curve analyses for height differences between the two diaphragmatic domes, indicative of paralysis or weakness in the right dysfunctions, were 4.44 cm and 3.51 cm, respectively. Similarly for left dysfunctions, the thresholds were 2.70 cm and 2.48 cm, respectively, demonstrating good performance (aera under the curve of 1.00, 1.00, 0.98, and 0.79, respectively). CONCLUSION In cases of left diaphragmatic dysfunction, as well as in paralysis associated with right diaphragmatic dysfunction, CT revealed thinner pillars. Additionally, a notable increase in the difference in diaphragmatic height demonstrated a strong potential to identify diaphragmatic dysfunction, with specific threshold values.
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Affiliation(s)
- Pauline Lallement
- Department of Respiratory Medicine and Lung Transplantation, Aix Marseille University, APHM, Chemin des Bourrely, 13015, Marseille, France
| | - Alain Boussuges
- Pulmonary Function Testing Laboratory, Aix-Marseille University, APHM, Marseille, France
| | - Paul Habert
- Department of Radiology, Aix-Marseille University, APHM, Marseille, France
- LIIE, Aix Marseille University, Marseille, France
- CERIMED, Aix Marseille University, Marseille, France
| | - Julien Bermudez
- Department of Respiratory Medicine and Lung Transplantation, Aix Marseille University, APHM, Chemin des Bourrely, 13015, Marseille, France
| | - Martine Reynaud-Gaubert
- Department of Respiratory Medicine and Lung Transplantation, Aix Marseille University, APHM, Chemin des Bourrely, 13015, Marseille, France
| | - Stéphane Delliaux
- Pulmonary Function Testing Laboratory, Aix-Marseille University, APHM, Marseille, France
| | - Fabienne Bregeon
- Pulmonary Function Testing Laboratory, Aix-Marseille University, APHM, Marseille, France
| | - Benjamin Coiffard
- Department of Respiratory Medicine and Lung Transplantation, Aix Marseille University, APHM, Chemin des Bourrely, 13015, Marseille, France.
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Cè M, Oliva G, Rabaiotti FL, Macrì L, Zollo S, Aquila A, Cellina M. Portable Dynamic Chest Radiography: Literature Review and Potential Bedside Applications. Med Sci (Basel) 2024; 12:10. [PMID: 38390860 PMCID: PMC10885043 DOI: 10.3390/medsci12010010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2024] [Revised: 02/01/2024] [Accepted: 02/03/2024] [Indexed: 02/24/2024] Open
Abstract
Dynamic digital radiography (DDR) is a high-resolution radiographic imaging technique using pulsed X-ray emission to acquire a multiframe cine-loop of the target anatomical area. The first DDR technology was orthostatic chest acquisitions, but new portable equipment that can be positioned at the patient's bedside was recently released, significantly expanding its potential applications, particularly in chest examination. It provides anatomical and functional information on the motion of different anatomical structures, such as the lungs, pleura, rib cage, and trachea. Native images can be further analyzed with dedicated post-processing software to extract quantitative parameters, including diaphragm motility, automatically projected lung area and area changing rate, a colorimetric map of the signal value change related to respiration and motility, and lung perfusion. The dynamic diagnostic information along with the significant advantages of this technique in terms of portability, versatility, and cost-effectiveness represents a potential game changer for radiological diagnosis and monitoring at the patient's bedside. DDR has several applications in daily clinical practice, and in this narrative review, we will focus on chest imaging, which is the main application explored to date in the literature. However, studies are still needed to understand deeply the clinical impact of this method.
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Affiliation(s)
- Maurizio Cè
- Postgraduation School in Radiodiagnostics, Università degli Studi di Milano, Via Festa del Perdono 7, 20122 Milan, Italy; (F.L.R.); (L.M.); (A.A.)
| | - Giancarlo Oliva
- Radiology Department, Fatebenefratelli Hospital, ASST Fatebenefratelli Sacco, 20121 Milan, Italy; (G.O.); (M.C.)
| | - Francesca Lucrezia Rabaiotti
- Postgraduation School in Radiodiagnostics, Università degli Studi di Milano, Via Festa del Perdono 7, 20122 Milan, Italy; (F.L.R.); (L.M.); (A.A.)
| | - Laura Macrì
- Postgraduation School in Radiodiagnostics, Università degli Studi di Milano, Via Festa del Perdono 7, 20122 Milan, Italy; (F.L.R.); (L.M.); (A.A.)
| | - Sharon Zollo
- Konica Minolta Business Solutions Europe GmbH, Capellalaan 65, 2132 JL Hoofddorp, The Netherlands;
| | - Alessandro Aquila
- Postgraduation School in Radiodiagnostics, Università degli Studi di Milano, Via Festa del Perdono 7, 20122 Milan, Italy; (F.L.R.); (L.M.); (A.A.)
| | - Michaela Cellina
- Radiology Department, Fatebenefratelli Hospital, ASST Fatebenefratelli Sacco, 20121 Milan, Italy; (G.O.); (M.C.)
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Bruck O, Naofal A, Senussi MH. Lung, Pleura, and Diaphragm Point-of-Care Ultrasound. Semin Ultrasound CT MR 2024; 45:120-131. [PMID: 38244897 DOI: 10.1053/j.sult.2024.01.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2024]
Abstract
Thoracic Ultrasonography involves the ultrasonographic examination of the lungs, pleura, and diaphragm. This provides a plethora of clinical information during the point of care assessment of patients. The air filled lungs create consistent artifacts and careful examination and understanding of these artefactual signs can provide useful information on underlying clinicopathologic states. This review aims to provide a review of the ultrasound signs and features that can be seen in horacic ultrasonography and summarize the clinical evidence to support its use.
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Affiliation(s)
- Or Bruck
- Baylor College of Medicine, Houston, TX
| | | | - Mourad H Senussi
- Baylor College of Medicine, Houston, TX; Texas Heart Institute, Houston, TX.
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Hu J, Guo R, Li H, Wen H, Wang Y. Perioperative Diaphragm Dysfunction. J Clin Med 2024; 13:519. [PMID: 38256653 PMCID: PMC10816119 DOI: 10.3390/jcm13020519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2023] [Revised: 01/07/2024] [Accepted: 01/15/2024] [Indexed: 01/24/2024] Open
Abstract
Diaphragm Dysfunction (DD) is a respiratory disorder with multiple causes. Although both unilateral and bilateral DD could ultimately lead to respiratory failure, the former is more common. Increasing research has recently delved into perioperative diaphragm protection. It has been established that DD promotes atelectasis development by affecting lung and chest wall mechanics. Diaphragm function must be specifically assessed for clinicians to optimally select an anesthetic approach, prepare for adequate monitoring, and implement the perioperative plan. Recent technological advancements, including dynamic MRI, ultrasound, and esophageal manometry, have critically aided disease diagnosis and management. In this context, it is noteworthy that therapeutic approaches for DD vary depending on its etiology and include various interventions, either noninvasive or invasive, aimed at promoting diaphragm recruitment. This review aims to unravel alternative anesthetic and operative strategies that minimize postoperative dysfunction by elucidating the identification of patients at a higher risk of DD and procedures that could cause postoperative DD, facilitating the recognition and avoidance of anesthetic and surgical interventions likely to impair diaphragmatic function.
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Affiliation(s)
- Jinge Hu
- Department of Anesthesiology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China; (J.H.); (R.G.); (H.L.)
- Department of Anesthesiology, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China;
| | - Ruijuan Guo
- Department of Anesthesiology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China; (J.H.); (R.G.); (H.L.)
| | - Huili Li
- Department of Anesthesiology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China; (J.H.); (R.G.); (H.L.)
| | - Hong Wen
- Department of Anesthesiology, Beijing Chaoyang Hospital, Capital Medical University, Beijing 100020, China;
| | - Yun Wang
- Department of Anesthesiology, Beijing Friendship Hospital, Capital Medical University, Beijing 100050, China; (J.H.); (R.G.); (H.L.)
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Fang J, Shen YC, Ting YN, Fang HY, Chen YW. Quantitative assessment of pneumothorax by using Shannon entropy of lung ultrasound M-mode image and diaphragmatic excursion based on automated measurement. Quant Imaging Med Surg 2024; 14:123-135. [PMID: 38223084 PMCID: PMC10784102 DOI: 10.21037/qims-23-636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Accepted: 10/12/2023] [Indexed: 01/16/2024]
Abstract
Background Lung ultrasound (LUS) and diaphragm ultrasound (DUS) are the appropriate modalities for conservative observation to those patients who are with stable pneumothorax, as well as for the timely detection of life-threatening pneumothorax at any location, due to they are portable, real-time, relatively cost effective, and most important, without radiation exposure. The absence of lung sliding on LUS M-mode images and the abnormality of diaphragmatic excursion (DE) on DUS M-mode images are the most common and novel diagnostic criteria for pneumothorax, respectively. However, visual inspection of M-mode images remains subjective and quantitative analysis of LUS and DUS M-mode images are required. Methods Shannon entropy of LUS M-mode image (ShanEnLM) and DE based on the automated measurement (DEAM) are adapted to the objective pneumothorax diagnoses and the severity quantifications in this study. Mild, moderate, and severe pneumothoraces were induced in 24 male New Zealand rabbits through insufflation of room air (5, 10 and 15, and 25 and 40 mL/kg, respectively) into their pleural cavities. In vivo intercostal LUS and subcostal DUS M-mode images were acquired using a point-of-care system for estimating ShanEnLM and DEAM. Results ShanEnLM and DEAM as functions of air insufflation volumes exhibited U-shaped curves and were exponentially decreasing, respectively. Either ShanEnLM or DEAM had areas under the receiver operating characteristic curves [95% confidence interval (CI)] of 1.0000 (95% CI: 1.0000-1.0000), 0.9833 (95% CI: 0.9214-1.0000), and 0.9407 (95% CI: 0.8511-1.0000) for differentiating between normal and mild pneumothorax, mild and moderate pneumothoraces, and moderate and severe pneumothoraces, respectively. Conclusions Our findings imply that the combination of ShanEnLM and DEAM give the promising potential for pneumothorax quantitative diagnosis.
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Affiliation(s)
- Jui Fang
- Research & Development Center for x-Dimensional Extracellular Vesicles, China Medical University Hospital, Taichung City
| | - Yu-Cheng Shen
- Division of Thoracic Surgery, Department of Surgery, China Medical University Hospital, Taichung City
| | - Yen-Nien Ting
- Research & Development Center for x-Dimensional Extracellular Vesicles, China Medical University Hospital, Taichung City
| | - Hsin-Yuan Fang
- Division of Thoracic Surgery, Department of Surgery, China Medical University Hospital, Taichung City
- School of Medicine, College of Medicine, China Medical University, Taichung City
| | - Yi-Wen Chen
- Research & Development Center for x-Dimensional Extracellular Vesicles, China Medical University Hospital, Taichung City
- Graduate Institute of Biomedical Sciences, China Medical University, Taichung City
- High Performance Materials Institute for xD Printing, Asia University, Taichung City
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10
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Umbrello M, Brogi E, Formenti P, Corradi F, Forfori F. Ultrasonographic Features of Muscular Weakness and Muscle Wasting in Critically Ill Patients. J Clin Med 2023; 13:26. [PMID: 38202033 PMCID: PMC10780243 DOI: 10.3390/jcm13010026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 12/12/2023] [Accepted: 12/18/2023] [Indexed: 01/12/2024] Open
Abstract
Muscle wasting begins as soon as in the first week of one's ICU stay and patients with multi-organ failure lose more muscle mass and suffer worse functional impairment as a consequence. Muscle wasting and weakness are mainly characterized by a generalized, bilateral lower limb weakness. However, the impairment of the respiratory and/or oropharyngeal muscles can also be observed with important consequences for one's ability to swallow and cough. Muscle wasting represents the result of the disequilibrium between breakdown and synthesis, with increased protein degradation relative to protein synthesis. It is worth noting that the resulting functional disability can last up to 5 years after discharge, and it has been estimated that up to 50% of patients are not able to return to work during the first year after ICU discharge. In recent years, ultrasound has played an increasing role in the evaluation of muscle. Indeed, ultrasound allows an objective evaluation of the cross-sectional area, the thickness of the muscle, and the echogenicity of the muscle. Furthermore, ultrasound can also estimate the thickening fraction of muscle. The objective of this review is to analyze the current understanding of the pathophysiology of acute skeletal muscle wasting and to describe the ultrasonographic features of normal muscle and muscle weakness.
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Affiliation(s)
- Michele Umbrello
- Department Intensive Care and Anesthesia, ASST Ovest Milanese, Ospedale Nuovo di Legnano, 20025 Legnano, Italy
| | - Etrusca Brogi
- Department Anaesthesia and Intensive Care, University of Pisa, 56126 Pisa, Italy
| | - Paolo Formenti
- Departement of Anesthesia and Intensive Care, ASST Nord Milano, Ospedale E Bassini, 20092 Cinisello Balsamo, Italy
| | - Francesco Corradi
- Department Anaesthesia and Intensive Care, University of Pisa, 56126 Pisa, Italy
| | - Francesco Forfori
- Department Anaesthesia and Intensive Care, University of Pisa, 56126 Pisa, Italy
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11
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Saisawart P, Sutthigran S, Suksangvoravong H, Thanaboonnipat C, Ritthikulprasert S, Tachampa K, Choisunirachon N. Computed tomographic diaphragmatic thickness: a promising method for the evaluation of diaphragmatic muscle in cardiopulmonary diseased cats. Front Vet Sci 2023; 10:1247531. [PMID: 38164391 PMCID: PMC10757920 DOI: 10.3389/fvets.2023.1247531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 11/21/2023] [Indexed: 01/03/2024] Open
Abstract
Diaphragmatic dysfunction (DD) is defined as a weakening of the diaphragmatic muscle and can be an undetected cause of dyspnea. The objectives of this study were to explore the appropriate diaphragmatic location, measure diaphragmatic thickness (DT), evaluate the effect of intrinsic factors on DT, and compare DT between healthy and diseased cats, using 33 healthy cats and 15 diseased cats. A retrospective, analytical, case-control study using thoraco-abdominal feline computed tomography (CT) was performed. Two radiologists independently reviewed all images to verify inter- and intra-observer reliabilities and the best position for measuring DT. The effects of sex, age, and body weight were also studied, and cutoff values for detecting DT abnormalities were established. The results showed that the appropriate location for DT measurement was at the ventral border of the cranial endplate of the first lumbar vertebral body (L1) due to its highest intra- and inter-observer reliabilities. At this location, a significant difference in DT between the right and left hemidiaphragms (p = 0.01) was observed. Only sex had an impact on DT values. Interestingly, the DTs of cardiorespiratory-affected cats, both on the right and left sides, were significantly thinner than those of healthy cats. In conclusion, CT imaging is a reliable imaging method for determining diaphragmatic muscular atrophy. The ventral border of the cranial endplate of L1 is recommended for measuring the DT, and sex was the only factor affecting the DT measurement.
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Affiliation(s)
- Phasamon Saisawart
- Department of Surgery, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
| | - Somchin Sutthigran
- Department of Surgery, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
| | | | - Chutimon Thanaboonnipat
- Department of Surgery, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
| | | | - Kittipong Tachampa
- Department of Physiology, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
| | - Nan Choisunirachon
- Department of Surgery, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
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12
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Da Conceicao D, Perlas A, Giron Arango L, Wild K, Li Q, Huszti E, Chowdhury J, Chan V. Validation of a novel point-of-care ultrasound method to assess diaphragmatic excursion. Reg Anesth Pain Med 2023:rapm-2023-104983. [PMID: 37940349 DOI: 10.1136/rapm-2023-104983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2023] [Accepted: 10/16/2023] [Indexed: 11/10/2023]
Abstract
INTRODUCTION Point-of-care ultrasound can assess diaphragmatic function and rule in or rule out paresis of the diaphragm. While this is a useful bedside tool, established methods have significant limitations. This study explores a new method to assess diaphragmatic motion by measuring the excursion of the uppermost point of the zone of apposition (ZOA) at the mid-axillary line using a high-frequency linear ultrasound probe and compares it with two previously established methods: the assessment of the excursion of the dome of the diaphragm (DOD) and the thickening ratio at the ZOA. METHODS This is a single-centre, prospective comparative study on elective surgical patients with normal diaphragmatic function. Following research ethics board approval and patient written consent, 75 elective surgical patients with normal diaphragmatic function were evaluated preoperatively. Three ultrasound methods were compared: (1) assessment of the excursion of the DOD using a curvilinear probe through an abdominal window; (2) assessment of the thickening fraction of the ZOA; and (3) assessment of the excursion of the ZOA. The last two methods performed with a linear probe on the lateral aspect of the chest. RESULTS Seventy-five patients were studied. We found that the evaluation of the excursion of the ZOA was more consistently successful (100% bilaterally) than the evaluation of the excursion of the DOD (98.7% and 34.7% on the right and left sides, respectively). The absolute values of the excursion of the ZOA were greater than and well correlated with the values of the DOD. CONCLUSION Our preliminary data from this exploratory study suggest that the evaluation of the excursion of the ZOA on the lateral aspect of the chest using a linear probe is consistently successful on both right and left sides. Future studies are needed to establish the distribution of normal values and suggest diagnostic criteria for diaphragmatic paresis or paralysis. TRIAL REGISTRATION NUMBER NCT03225508.
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Affiliation(s)
- Diogo Da Conceicao
- Anesthesia and Pain Management, Toronto Western Hospital - University Health Network, Toronto, Ontario, Canada
| | - Anahi Perlas
- Anesthesia and Pain Management, Toronto Western Hospital - University Health Network, Toronto, Ontario, Canada
| | - Laura Giron Arango
- Anesthesia and Pain Management, Toronto Western Hospital - University Health Network, Toronto, Ontario, Canada
| | - Kim Wild
- Anesthesia and Pain Management, Toronto Western Hospital - University Health Network, Toronto, Ontario, Canada
| | - Qixuan Li
- Biostatistical Research Unit, University Health Network, Toronto, Ontario, Canada
| | - Ella Huszti
- Biostatistical Research Unit, University Health Network, Toronto, Ontario, Canada
| | - Jayanta Chowdhury
- Anesthesia and Pain Management, Toronto Western Hospital - University Health Network, Toronto, Ontario, Canada
| | - Vincent Chan
- Anesthesia and Pain Management, Toronto Western Hospital - University Health Network, Toronto, Ontario, Canada
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13
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Rizza V, Maranta F, Cianfanelli L, Cartella I, Alfieri O, Cianflone D. Imaging of the Diaphragm Following Cardiac Surgery: Focus on Ultrasonographic Assessment. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2023; 42:2481-2490. [PMID: 37357908 DOI: 10.1002/jum.16291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 05/19/2023] [Accepted: 06/04/2023] [Indexed: 06/27/2023]
Abstract
Diaphragm dysfunction is a common complication following cardiac surgery. Its clinical impact is variable, ranging from the absence of symptoms to the acute respiratory failure. Post-operative diaphragm dysfunction may negatively affect patients' prognosis delaying the weaning from the mechanical ventilation (MV), extending the time of hospitalization and increasing mortality. Ultrasonography is a valid tool to evaluate diaphragmatic impairment in different settings, like the Intensive Care Unit, to predict successful weaning from the MV, and the Cardiovascular Rehabilitation Unit, to stratify patients in terms of risk of functional recovery failure. The aim of this review is to describe the pathophysiology of post-cardiac surgery diaphragm dysfunction, the techniques used for its diagnosis and the potential applications of diaphragm ultrasound.
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Affiliation(s)
| | - Francesco Maranta
- Cardiac Rehabilitation Unit, San Raffaele Scientific Institute, Milan, Italy
| | - Lorenzo Cianfanelli
- Cardiac Rehabilitation Unit, San Raffaele Scientific Institute, Milan, Italy
| | | | - Ottavio Alfieri
- Cardiac Surgery Department, San Raffaele Scientific Institute, Milan, Italy
| | - Domenico Cianflone
- Vita-Salute San Raffaele University, Milan, Italy
- Cardiac Rehabilitation Unit, San Raffaele Scientific Institute, Milan, Italy
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14
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Branea OE, Copotoiu SM, Becica DA, Budeanu AR, Budeanu RG, Becica ME, Cucoranu DC, Voidazan S, Chis M, Lazar AE. Assessment of the Diaphragm Thickness Decrease in Critically Ill COVID-19 Patients: Could Computed Tomography Be of Aid Regarding Diaphragm Muscle Mass? Cureus 2023; 15:e47195. [PMID: 38022230 PMCID: PMC10652661 DOI: 10.7759/cureus.47195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/17/2023] [Indexed: 12/01/2023] Open
Abstract
INTRODUCTION The diaphragm has a significant clinical value on respiratory performance. There is little literature on the use of thorax computed tomography for the purpose of identifying alterations in diaphragm thickness in critically ill patients diagnosed with COVID-19. The present study aims to investigate dynamic changes in muscle thickness and its association with clinical outcomes. METHODS A single-center retrospective observational study was conducted in a tertiary intensive care unit (ICU). The study comprised adult patients with severe COVID-19 who were admitted to the ICU and underwent two thorax CT scans. We measured diaphragmatic thickness at the level of the celiac truncus. RESULTS The average reduction in thickness of the dynamic diaphragm was found to be -0.58 mm for the right diaphragm and -0.54 mm for the left diaphragm. The diaphragm thickness exhibited a substantial decrease on both the right and left sides in both CT scans (p=0.02). A negative correlation coefficient was observed for both the right and left diaphragm. The criterion indicating a poor prognosis for the right diaphragm was a value greater than -0.175, whereas it was more significant for the left diaphragm than -0.435. The cut-off values indicated a high risk of prolonged mechanical ventilation and an increased risk of ICU mortality. CONCLUSION CT diaphragm evaluation in mechanically ventilated COVID-19 patients has the possibility of becoming a reliable tool for predicting muscle modifications.
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Affiliation(s)
- Oana-Elena Branea
- Discipline of Anesthesia and Intensive Care, George Emil Palade University of Medicine, Pharmacy, Science and Technology, Târgu Mureș, ROU
- Department of Anesthesia and Intensive Care, Târgu Mureș County Emergency Clinical Hospital, Târgu Mureș, ROU
| | - Sanda Maria Copotoiu
- Discipline of Anesthesia and Intensive Care, George Emil Palade University of Medicine, Pharmacy, Science and Technology, Târgu Mureș, ROU
| | - Diana Andreea Becica
- Department of Anesthesia and Intensive Care, Târgu Mureș County Emergency Clinical Hospital, Târgu Mureș, ROU
| | - AnaMaria Romina Budeanu
- Department of Anesthesia and Intensive Care, Târgu Mureș County Emergency Clinical Hospital, Târgu Mureș, ROU
| | - Razvan Gabriel Budeanu
- Department of Radiology, Târgu Mureș County Emergency Clinical Hospital, Târgu Mureș, ROU
| | - Mihai Emanuel Becica
- Department of Radiology, Târgu Mureș County Emergency Clinical Hospital, Târgu Mureș, ROU
| | | | - Septimiu Voidazan
- Discipline of Epidemiology, George Emil Palade University of Medicine, Pharmacy, Science and Technology, Târgu Mureș, ROU
- Department of Epidemiology, Târgu Mureș County Emergency Clinical Hospital, Târgu Mureș, ROU
| | - Monica Chis
- Discipline of Rheumatology, George Emil Palade University of Medicine, Pharmacy, Science and Technology, Târgu Mureș, ROU
- Department of Rheumatology, Târgu Mureș County Emergency Clinical Hospital, Târgu Mureș, ROU
| | - Alexandra Elena Lazar
- Discipline of Anesthesia and Intensive Care, George Emil Palade University of Medicine, Pharmacy, Science and Technology, Târgu Mureș, ROU
- Department of Anesthesia and Intensive Care, Târgu Mureș County Emergency Clinical Hospital, Târgu Mureș, ROU
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15
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Koo CH, Hwang I, Shin HJ, Ryu JH. Hemidiaphragmatic paralysis after costoclavicular approach versus other brachial plexus blocks in upper limb surgery: a meta-analysis. Korean J Anesthesiol 2023; 76:442-450. [PMID: 37127532 PMCID: PMC10562070 DOI: 10.4097/kja.22718] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 03/17/2023] [Accepted: 04/26/2023] [Indexed: 05/03/2023] Open
Abstract
BACKGROUND The costoclavicular brachial plexus block (CCB) is a recently established technique that uses the infraclavicular approach and is performed just below the clavicle. This meta-analysis aimed to determine whether CCB can reduce the incidence of hemidiaphragmatic paralysis (HDP), which is a major adverse event related to brachial plexus block (BPB), while yielding comparable block performance as other BPB techniques. METHODS We searched electronic databases to identify relevant studies that compared the incidence of HDP between CCB and other BPB techniques. The primary outcome was the incidence of HDP following CCB and other BPB techniques. The secondary outcomes were pulmonary function test results, other adverse events, and block performance parameters such as onset and performance time. RESULTS We included six randomized controlled trials that included 414 patients. Compared with the other BPB group, the CCB group had a significantly lower incidence of HDP (relative ratio: 0.21, 95% CI [0.12, 0.36], P < 0.001) and higher peak expiratory flow rate (mean difference: 0.68 L/s, 95% CI [0.13, 1.23], P = 0.015). There were no significant between-group differences with respect to other adverse events and block performance parameters. CONCLUSIONS Compared with other BPB techniques, CCB involves a lower incidence of HDP with comparable onset and performance time.
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Affiliation(s)
- Chang-Hoon Koo
- Department of Anesthesiology and Pain Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
- Department of Anesthesiology and Pain Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Insung Hwang
- Department of Anesthesiology and Pain Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Hyun-Jung Shin
- Department of Anesthesiology and Pain Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
- Department of Anesthesiology and Pain Medicine, Seoul National University College of Medicine, Seoul, Korea
| | - Jung-Hee Ryu
- Department of Anesthesiology and Pain Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
- Department of Anesthesiology and Pain Medicine, Seoul National University College of Medicine, Seoul, Korea
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16
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Pokharkar AD, Aditya M, Kandpal D, Balan S, Gupta V, Chowdhary SK. Right Phrenic Nerve Palsy following Long-gap Esophageal Atresia and Tracheoesophageal Fistula Repair. J Indian Assoc Pediatr Surg 2023; 28:433-435. [PMID: 37842212 PMCID: PMC10569267 DOI: 10.4103/jiaps.jiaps_7_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 06/03/2023] [Accepted: 06/04/2023] [Indexed: 10/17/2023] Open
Abstract
Esophageal atresia (EA) and tracheoesophageal fistula (TEF) are surgically correctable congenital anomalies with reported surgical common complications such as anastomotic leaks, recurrent TEF, and esophageal strictures; however, phrenic nerve injury (PNI) is a very rare but possible complication which we have highlighted in our case report. Here, we report a baby girl operated for long-gap EA and TEF having respiratory distress and failed attempts to wean off oxygen support. Serial chest X-rays showed elevated right hemidiaphragm, whereas ultrasound thorax confirmed our diagnosis of right PNI causing diaphragmatic palsy. Conservative management with the hope of spontaneous recovery failed, so diaphragmatic plication was done at 5 weeks from index surgery. Postplication, the baby was weaned off oxygen and pressure support the very 1st day and had improved respiratory physiology.
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Affiliation(s)
- Ashitosh D. Pokharkar
- Department of Pediatric Urology and Pediatric Surgery, Indraprastha Apollo Hospitals, New Delhi, India
| | - M. Aditya
- Department of Pediatric Urology and Pediatric Surgery, Indraprastha Apollo Hospitals, New Delhi, India
| | - Deepak Kandpal
- Department of Pediatric Urology and Pediatric Surgery, Indraprastha Apollo Hospitals, New Delhi, India
| | - Saroja Balan
- Department of Neonatology, Indraprastha Apollo Hospitals, New Delhi, India
| | - Vidya Gupta
- Department of Neonatology, Indraprastha Apollo Hospitals, New Delhi, India
| | - Sujit K. Chowdhary
- Department of Pediatric Urology and Pediatric Surgery, Indraprastha Apollo Hospitals, New Delhi, India
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17
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Lampridis S. Raising the bar, lowering the diaphragm: a new era in diaphragmatic plication. J Thorac Dis 2023; 15:3529-3532. [PMID: 37559649 PMCID: PMC10407503 DOI: 10.21037/jtd-23-716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2023] [Accepted: 06/02/2023] [Indexed: 08/11/2023]
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18
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Puchongmart C, Nakornchai T, Leethotsarat K, Monsomboon A, Prapruetkit N, Ruangsomboon O, Riyapan S, Surabenjawong U, Chakorn T. The Incidence of Diaphragmatic Dysfunction in Patients Presenting With Dyspnea in the Emergency Department. JOURNAL OF ULTRASOUND IN MEDICINE : OFFICIAL JOURNAL OF THE AMERICAN INSTITUTE OF ULTRASOUND IN MEDICINE 2023; 42:1557-1566. [PMID: 36680779 DOI: 10.1002/jum.16175] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/20/2022] [Revised: 11/14/2022] [Accepted: 12/27/2022] [Indexed: 06/17/2023]
Abstract
OBJECTIVES Diaphragmatic dysfunction has been reported as a cause of dyspnea, and its diagnosis can be made using ultrasound. Diaphragmatic ultrasound is mainly used to predict respiratory failure in chronic conditions. The use of diaphragmatic ultrasound has also risen in acute settings, such as emergency departments (EDs). However, the number of studies on its use still needs to be increased. The present study aimed to find the incidence of diaphragmatic dysfunction in the ED. METHODS This prospective cohort study was conducted in an ED. We enrolled patients aged greater than 18 years who presented with dyspnea. Diaphragmatic excursion and diaphragmatic thickness techniques were performed. The primary outcome was the incidence of diaphragmatic dysfunction. The secondary outcomes were the associations between diaphragmatic dysfunction and the composition of respiratory therapies within 24 hours, intubation within 24 hours, and 7-day mortality. RESULTS A total of 237 patients were analyzed. The incidences of diaphragmatic dysfunction assessed by diaphragmatic excursion and diaphragm thickness were 22.4 and 32.1%, respectively. Patients with sepsis and cancer had the highest incidences. Diaphragmatic dysfunction assessed by both techniques was not associated with the composition of respiratory support therapies within 24 hours, intubation within 24 hours, or 7-day mortality. CONCLUSIONS The incidence of diaphragmatic dysfunction in dyspneic patients in the ED ranged from 22.4 to 32.1%, depending on the ultrasound technique. Diaphragmatic dysfunction was not associated with the composition of respiratory support therapies, intubation, or mortality.
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Affiliation(s)
- Chanokporn Puchongmart
- Department of Emergency Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Tanyaporn Nakornchai
- Department of Emergency Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Kewalin Leethotsarat
- Department of Emergency Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Apichaya Monsomboon
- Department of Emergency Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Nattakarn Prapruetkit
- Department of Emergency Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Onlak Ruangsomboon
- Department of Emergency Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Sattha Riyapan
- Department of Emergency Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Usapan Surabenjawong
- Department of Emergency Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Tipa Chakorn
- Department of Emergency Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
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Aljibali AS. Ultrasound utilization in the diagnosis of diaphragm dysfunction compared to other modalities: A retrospective study. Int J Health Sci (Qassim) 2023; 17:11-17. [PMID: 37151744 PMCID: PMC10155251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/09/2023] Open
Abstract
Objectives Diaphragm is dome-shaped fibro-muscular assembly, composed of central tendon surrounded by peripheral muscle fibers. It plays a significant role in respiration and maintenance of lumber spine stability. Any condition that interferes with diaphragmatic innervation, contractile muscle function or mechanical coupling to chest wall can cause diaphragm dysfunction; which is usually manifests as elevation at chest radiography. Functional imaging with M-mode ultrasonography has been used in assessment of diaphragm kinetics in a variety of normal and pathological conditions. In this study, we evaluate the departmental ultrasound accuracy in diaphragm motion assessment and compare its results with other institutional parameters. Methods We retrospectively reviewed the recorded laboratory investigation and chest radiograph of 163 pediatric patients. A total of 131 patients met clinical inclusion criteria for our study, patients under age of 14 years having clinical suspicion of diaphragmatic dysfunction. Patients having neuromuscular blockers, surgical plication, and phrenic nerve pacing were excluded. The mean age was 1.6 (SD 2.6) years and there were 44.3% of male and 55.7% of female patients. Results The data demonstrated that ultrasonography is a highly sensitive and specific diagnostic tool compared to X-ray and laboratory investigation and clinical suspicion. The second-best results were obtained by X-ray and less accurate results were obtained by laboratory investigation. Conclusion In proper sonographic technique; diaphragmatic ultrasound appears to be a valid and reliable diagnostic too; for diaphragmatic dysfunction. Diaphragm ultrasound may act as an imaging tool guiding rehabilitation success in diaphragmatic dysfunction cases.
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Affiliation(s)
- Abdulaziz S. Aljibali
- Department of Radiology, College of Medicine, Qassim University, Qassim, Saudi Arabia
- Medical Imaging Department, King Abdullah Specialized Children Hospital, Riyadh, Saudi Arabia
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20
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De Rosa CA, Cristiano G, Guarino M. Ultrasound assessment of diaphragmatic dysfunction and its improvement with levosimendan in patients with chronic obstructive pulmonary disease. EMERGENCY CARE JOURNAL 2023. [DOI: 10.4081/ecj.2023.11248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023] Open
Abstract
Diaphragmatic Dysfunction (DD) is a clinical condition in which the diaphragm becomes weak or paralyzed, because of muscle strength reduction. It can be due to muscular issues or loss of proper innervation, but, also, to pulmonary hyperinflation or air trapping, such as in Chronic Obstructive Pulmonary Disease (COPD). DD impacts on COPD induced dyspnea, determining its progressive worsening, but levosimendan, an inodilator better known as Ca2+ sensitizer, may limit this phenomenon and diaphragmatic ultrasound assessment can be useful in monitoring its effect. Here, we show the case of a 77-year-old woman admitted to the Emergency department for acute exacerbation of chronic dyspnea in COPD, related to right ventricular failure and DD, which did not respond to medical therapy and non-invasive mechanical ventilation but did experience a favorable outcome after intravenous administration of levosimendan.
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21
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Duyndam A, Smit J, Heunks L, Molinger J, IJland M, van Rosmalen J, van Dijk M, Tibboel D, Ista E. Reference values of diaphragmatic dimensions in healthy children aged 0-8 years. Eur J Pediatr 2023:10.1007/s00431-023-04920-6. [PMID: 36939879 DOI: 10.1007/s00431-023-04920-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 02/28/2023] [Accepted: 03/02/2023] [Indexed: 03/21/2023]
Abstract
Diaphragmatic thickness (Tdi) and diaphragm thickening fraction (dTF) are widely used parameters in ultrasound studies of the diaphragm in mechanically ventilated children, but normal values for healthy children are scarce. We determined reference values of Tdi and dTF using ultrasound in healthy children aged 0-8 years old and assessed their reproducibility. In a prospective, observational cohort, Tdi and dTF were measured on ultrasound images across four age groups comprising at least 30 children per group: group 1 (0-6 months), group 2 (7 months-1 year), group 3 (2-4 years) and group 4 (5-8 years). Ultrasound images of 137 healthy children were included. Mean Tdi at inspiration was 2.07 (SD 0.40), 2.09 (SD 0.40), 1.69 (SD 0.30) and 1.72 (SD 0.30) mm for groups 1, 2, 3 and 4, respectively. Mean Tdi at expiration was 1.64 (SD 0.30), 1.67 (SD 0.30), 1.38 (SD 0.20) and 1.42 (SD 0.20) mm for groups 1, 2, 3 and 4, respectively. Mean Tdi at inspiration and mean Tdi at expiration for groups 1 and 2 were significantly greater than those for groups 3 and 4 (both p < 0.001). Mean dTF was 25.4% (SD 10.4), 25.2% (SD 8.3), 22.8% (SD 10.9) and 21.3% (SD 7.1) for group 1, 2, 3 and 4, respectively. The intraclass correlation coefficients (ICC) representing the level of inter-rater reliability between two examiners performing the ultrasounds was 0.996 (95% CI 0.982-0.999). ICC of the inter-rater reliability between the raters in 11 paired assessments was 0.989 (95% CI 0.973-0.995). Conclusion: Ultrasound measurements of Tdi and dTF were highly reproducible in healthy children aged 0-8 years. Trial registration: ClinicalTrials.gov identifier (NCT number): NCT04589910. What is Known: • Diaphragmatic thickness and diaphragm thickening fraction are widely used parameters in ultrasound studies of the diaphragm in mechanically ventilated children, but normal values for healthy children to compare these with are scarce. What is New: • We determined normal values of diaphragmatic thickness and diaphragm thickening fraction using ultrasound in 137 healthy children aged 0-8 years old. The diaphragmatic thickness of infants up to 1 year old was significantly greater than that of children from 2 to 8 years old. Diaphragmatic thickness decreased with an increase in body surface area. These normal values in healthy children can be used to assess changes in respiratory muscle thickness in mechanically ventilated children.
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Affiliation(s)
- Anita Duyndam
- Department of Pediatric Surgery and Intensive Care, Erasmus , Sophia Children's Hospital, MC, Rotterdam, the Netherlands.
| | - Joke Smit
- Department of Pediatric Surgery and Intensive Care, Erasmus , Sophia Children's Hospital, MC, Rotterdam, the Netherlands
| | - Leo Heunks
- Department of Intensive Care, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Jeroen Molinger
- Department of Intensive Care, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands.,Division of Critical Care, Department of Anesthesiology, Duke University School of Medicine, Durham, NC, USA
| | - Marloes IJland
- Department of Intensive Care Medicine, Radboud University Medical Center, Radboud Institute for Health Sciences, Nijmegen, the Netherlands
| | - Joost van Rosmalen
- Department of Biostatistics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands.,Department of Epidemiology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Monique van Dijk
- Department of Pediatric Surgery and Intensive Care, Erasmus , Sophia Children's Hospital, MC, Rotterdam, the Netherlands
| | - Dick Tibboel
- Department of Pediatric Surgery and Intensive Care, Erasmus , Sophia Children's Hospital, MC, Rotterdam, the Netherlands.,Department of Intensive Care, Erasmus MC, University Medical Center Rotterdam, Rotterdam, the Netherlands
| | - Erwin Ista
- Department of Pediatric Surgery and Intensive Care, Erasmus , Sophia Children's Hospital, MC, Rotterdam, the Netherlands
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22
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Formenti P, Miori S, Galimberti A, Umbrello M. The Effects of Positive End Expiratory Pressure and Lung Volume on Diaphragm Thickness and Thickening. Diagnostics (Basel) 2023; 13:diagnostics13061157. [PMID: 36980465 PMCID: PMC10047794 DOI: 10.3390/diagnostics13061157] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Revised: 03/13/2023] [Accepted: 03/14/2023] [Indexed: 03/30/2023] Open
Abstract
Introduction: Diaphragm dysfunction is common in patients undergoing mechanical ventilation. The application of positive end-expiratory pressure (PEEP) and the varying end-expiratory lung volume cause changes in diaphragm geometry. We aimed to assess the impact of the level of PEEP and lung inflation on diaphragm thickness, thickening fraction and displacement. Methods: An observational study in a mixed medical and surgical ICU was conducted. The patients underwent a PEEP-titration trial with the application of three random levels of PEEP: 0 cmH2O (PEEP0), 8 cmH2O (PEEP8) and 15 cmH2O (PEEP15). At each step, the indices of respiratory effort were assessed, together with arterial blood and diaphragm ultrasound; end-expiratory lung volume was measured. Results: 14 patients were enrolled. The tidal volume, diaphragm displacement and thickening fraction were significantly lower with higher levels of PEEP, while both the expiratory and inspiratory thickness increased with higher PEEP levels. The inspiratory effort, as evaluated by the esophageal pressure swing, was unchanged. Both the diaphragm thickening fraction and displacement were significantly correlated with inspiratory effort in the whole dataset. For both measurements, the correlation was stronger at lower levels of PEEP. The difference in the diaphragm thickening fraction during tidal breathing between PEEP 15 and PEEP 0 was negatively related to the change in the functional residual capacity and the change in alveolar dead space. Conclusions: Different levels of PEEP significantly modified the diaphragmatic thickness and thickening fraction, showing a PEEP-induced decrease in the diaphragm contractile efficiency. When using ultrasound to assess diaphragm size and function, the potential effect of lung inflation should be taken into account.
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Affiliation(s)
- Paolo Formenti
- SC Anestesia e Rianimazione I, ASST Santi Paolo e Carlo-Polo Universitario, Ospedale San Paolo, 20142 Milan, Italy
| | - Sara Miori
- SC Anestesia e Rianimazione I, Ospedale Santa Chiara, APSS, 30014 Trento, Italy
| | - Andrea Galimberti
- SC Anestesia Rianimazione e Terapia Intensiva ASST Nord Milano Ospedale Bassini, 20092 Cinisello Balsamo, Italy
| | - Michele Umbrello
- SC Anestesia e Rianimazione II, ASST Santi Paolo e Carlo-Polo Universitario, Ospedale San Carlo Borromeo, 20148 Milan, Italy
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23
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Ribeiro F, Alves PKN, Bechara LRG, Ferreira JCB, Labeit S, Moriscot AS. Small-Molecule Inhibition of MuRF1 Prevents Early Disuse-Induced Diaphragmatic Dysfunction and Atrophy. Int J Mol Sci 2023; 24:ijms24043637. [PMID: 36835047 PMCID: PMC9965746 DOI: 10.3390/ijms24043637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2023] [Revised: 02/07/2023] [Accepted: 02/09/2023] [Indexed: 02/16/2023] Open
Abstract
In clinical conditions such as diaphragm paralysis or mechanical ventilation, disuse-induced diaphragmatic dysfunction (DIDD) is a condition that poses a threat to life. MuRF1 is a key E3-ligase involved in regulating skeletal muscle mass, function, and metabolism, which contributes to the onset of DIDD. We investigated if the small-molecule mediated inhibition of MuRF1 activity (MyoMed-205) protects against early DIDD after 12 h of unilateral diaphragm denervation. Wistar rats were used in this study to determine the compound's acute toxicity and optimal dosage. For potential DIDD treatment efficacy, diaphragm contractile function and fiber cross-sectional area (CSA) were evaluated. Western blotting investigated potential mechanisms underlying MyoMed-205's effects in early DIDD. Our results indicate 50 mg/kg bw MyoMed-205 as a suitable dosage to prevent early diaphragmatic contractile dysfunction and atrophy following 12 h of denervation without detectable signs of acute toxicity. Mechanistically, treatment did not affect disuse-induced oxidative stress (4-HNE) increase, whereas phosphorylation of (ser632) HDAC4 was normalized. MyoMed-205 also mitigated FoxO1 activation, inhibited MuRF2, and increased phospho (ser473) Akt protein levels. These findings may suggest that MuRF1 activity significantly contributes to early DIDD pathophysiology. Novel strategies targeting MuRF1 (e.g., MyoMed-205) have potential therapeutic applications for treating early DIDD.
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Affiliation(s)
- Fernando Ribeiro
- Department of Anatomy, Institute of Biomedical Sciences, University of São Paulo, São Paulo 05508-000, Brazil
| | - Paula K. N. Alves
- Department of Anatomy, Institute of Biomedical Sciences, University of São Paulo, São Paulo 05508-000, Brazil
| | - Luiz R. G. Bechara
- Department of Anatomy, Institute of Biomedical Sciences, University of São Paulo, São Paulo 05508-000, Brazil
| | - Julio C. B. Ferreira
- Department of Anatomy, Institute of Biomedical Sciences, University of São Paulo, São Paulo 05508-000, Brazil
| | - Siegfried Labeit
- DZHK Partner Site Mannheim-Heidelberg, Medical Faculty Mannheim, University of Heidelberg, 68169 Mannheim, Germany
- Myomedix GmbH, 69151 Neckargemünd, Germany
| | - Anselmo S. Moriscot
- Department of Anatomy, Institute of Biomedical Sciences, University of São Paulo, São Paulo 05508-000, Brazil
- Correspondence: ; Tel.: +55-11-3091-0946
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24
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Maloney TG, Anderson ZS, Vincent AB, Magiera AL, Slocum PC. Association of Hoover's Sign with Maximal Expiratory-to-Inspiratory Pressure Ratio in Patients with COPD. CHRONIC OBSTRUCTIVE PULMONARY DISEASES (MIAMI, FLA.) 2023; 10:1-6. [PMID: 36394525 PMCID: PMC9995237 DOI: 10.15326/jcopdf.2022.0341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Purpose In chronic obstructive pulmonary disease (COPD) some patients develop paradoxical inspiratory rib motion, which is termed Hoover's sign. Our objective was to determine whether Hoover's sign is associated with a difference in the maximal expiratory pressure (MEP), the maximal inspiratory pressure (MIP), the MEP/MIP ratio, and other features on pulmonary function tests (PFTs). Methods This observational prospective single-center cohort study enrolled patients with an established diagnosis of COPD with Global initiative for chronic Obstructive Lung Disease (GOLD) stage 3 (severe) and 4 (very severe) based on PFTs. Respiratory pressure measurements were also collected. Patients were examined for the presence or absence of Hoover's sign on physical examination by 2 internal medicine resident physicians trained in examining for Hoover's sign by a pulmonologist. Results A total of 71 patients were examined for the presence of Hoover's sign. Hoover's sign was present in 49.3% of patients. Observer agreement (k statistic) was 0.8 for Hoover's sign. Median MEP/MIP was significantly greater in patients with Hoover's sign than those without Hoover's sign (1.88 versus 1.16, p<0.001). Patients with Hoover's sign also had a significantly lower MIP (39.0 versus 58.0, p<0.001) and higher residual volume (RV) to total lung capacity (TLC) ratio indicating a higher degree of air trapping (65 versus 59.5, p<0.014). Conclusion The presence of Hoover's sign in patients with COPD is associated with a higher MEP/MIP ratio. This suggests respiratory pressure measurements can predict diaphragm dysfunction in patients with GOLD stage 3 and 4 COPD. Patients with Hoover's sign were also found to have a lower MIP and more air trapping.
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Affiliation(s)
| | | | | | | | - Philip C Slocum
- Freeman Lung Institute, Freeman Health System, Joplin, Missouri, United States
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25
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Ultrasonographic Assessment of Diaphragmatic Function and Its Clinical Application in the Management of Patients with Acute Respiratory Failure. Diagnostics (Basel) 2023; 13:diagnostics13030411. [PMID: 36766515 PMCID: PMC9914801 DOI: 10.3390/diagnostics13030411] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 01/17/2023] [Accepted: 01/19/2023] [Indexed: 01/24/2023] Open
Abstract
Acute respiratory failure (ARF) is a common life-threatening medical condition, with multiple underlying etiologies. In these cases, many factors related to systemic inflammation, prolonged use of steroids, and lung mechanical abnormalities (such as hyperinflation or increased elastic recoil due to pulmonary oedema or fibrosis) may act as synergic mechanisms leading to diaphragm dysfunction. The assessment of diaphragm function with ultrasound has been increasingly investigated in the emergency department and during hospital stay as a valuable tool for providing additional anatomical and functional information in many acute respiratory diseases. The diaphragmatic ultrasound is a noninvasive and repeatable bedside tool, has no contraindications, and allows the physician to rapidly assess the presence of diaphragmatic dysfunction; this evaluation may help in estimating the need for mechanical ventilation (and the risk of weaning failure), as well as the risk of longer hospital stay and higher mortality rate. This study presents an overview of the recent evidence regarding the evaluation of diaphragmatic function with bedside ultrasound and its clinical applications, including a discussion of real-life clinical cases.
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26
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Younger DS. Critical illness-associated weakness and related motor disorders. HANDBOOK OF CLINICAL NEUROLOGY 2023; 195:707-777. [PMID: 37562893 DOI: 10.1016/b978-0-323-98818-6.00031-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/12/2023]
Abstract
Weakness of limb and respiratory muscles that occurs in the course of critical illness has become an increasingly common and serious complication of adult and pediatric intensive care unit patients and a cause of prolonged ventilatory support, morbidity, and prolonged hospitalization. Two motor disorders that occur singly or together, namely critical illness polyneuropathy and critical illness myopathy, cause weakness of limb and of breathing muscles, making it difficult to be weaned from ventilatory support, commencing rehabilitation, and extending the length of stay in the intensive care unit, with higher rates of morbidity and mortality. Recovery can take weeks or months and in severe cases, and may be incomplete or absent. Recent findings suggest an improved prognosis of critical illness myopathy compared to polyneuropathy. Prevention and treatment are therefore very important. Its management requires an integrated team approach commencing with neurologic consultation, creatine kinase (CK) measurement, detailed electrodiagnostic, respiratory and neuroimaging studies, and potentially muscle biopsy to elucidate the etiopathogenesis of the weakness in the peripheral and/or central nervous system, for which there may be a variety of causes. These tenets of care are being applied to new cases and survivors of the coronavirus-2 disease pandemic of 2019. This chapter provides an update to the understanding and approach to critical illness motor disorders.
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Affiliation(s)
- David S Younger
- Department of Clinical Medicine and Neuroscience, CUNY School of Medicine, New York, NY, United States; Department of Medicine, Section of Internal Medicine and Neurology, White Plains Hospital, White Plains, NY, United States.
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27
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Duyndam A, Smit J, Houmes RJ, Heunks L, Molinger J, IJland M, van Rosmalen J, van Dijk M, Tibboel D, Ista E. No association between thickening fraction of the diaphragm and extubation success in ventilated children. Front Pediatr 2023; 11:1147309. [PMID: 37033174 PMCID: PMC10081691 DOI: 10.3389/fped.2023.1147309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2023] [Accepted: 03/02/2023] [Indexed: 04/11/2023] Open
Abstract
Introduction In mechanically ventilated adults, thickening fraction of diaphragm (dTF) measured by ultrasound is used to predict extubation success. Whether dTF can also predict extubation success in children is unclear. Aim To investigate the association between dTF and extubation success in children. Second, to assess diaphragm thickness during ventilation and the correlation between dTF, diaphragm thickness (Tdi), age and body surface. Method Prospective observational cohort study in children aged 0-18 years old with expected invasive ventilation for >48 h. Ultrasound was performed on day 1 after intubation (baseline), day 4, day 7, day 10, at pre-extubation, and within 24 h after extubation. Primary outcome was the association between dTF pre-extubation and extubation success. Secondary outcome measures were Tdi end-inspiratory and Tdi end-expiratory and atrophy defined as <10% decrease of Tdi end-expiratory versus baseline at pre-extubation. Correlations were calculated with Spearman correlation coefficients. Inter-rater reliability was calculated with intraclass correlation (ICC). Results Fifty-three patients, with median age 3.0 months (IQR 0.1-66.0) and median duration of invasive ventilation of 114.0 h (IQR 55.5-193.5), were enrolled. Median dTF before extubation with Pressure Support 10 above 5 cmH2O was 15.2% (IQR 9.7-19.3). Extubation failure occurred in six children, three of whom were re-intubated and three then received non-invasive ventilation. There was no significant association between dTF and extubation success; OR 0.33 (95% CI; 0.06-1.86). Diaphragmatic atrophy was observed in 17/53 cases, in three of extubation failure occurred. Children in the extubation failure group were younger: 2.0 months (IQR 0.81-183.0) vs. 3.0 months (IQR 0.10-48.0); p = 0.045. At baseline, pre-extubation and post-extubation there was no significant correlation between age and BSA on the one hand and dTF, Tdi- insp and Tdi-exp on the other hand. The ICC representing the level of inter-rater reliability between the two examiners performing the ultrasounds was 0.994 (95% CI 0.970-0.999). The ICC of the inter-rater reliability between the raters in 36 paired assessments was 0.983 (95% CI 0.974-0.990). Conclusion There was no significant association between thickening fraction of the diaphragm and extubation success in ventilated children.
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Affiliation(s)
- Anita Duyndam
- Pediatric Intensive Care, Department of Pediatric Surgery, Erasmus MC-Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam, Netherlands
- Correspondence: Anita Duyndam
| | - Joke Smit
- Pediatric Intensive Care, Department of Pediatric Surgery, Erasmus MC-Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Robert Jan Houmes
- Pediatric Intensive Care, Department of Pediatric Surgery, Erasmus MC-Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Leo Heunks
- Intensive Care Adults, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Jeroen Molinger
- Intensive Care Adults, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
- Division of Critical Care, Department of Anesthesiology, Duke University School of Medicine, Durham, NC, United States
| | - Marloes IJland
- Department of Intensive Care Medicine, Radboud University Medical Center, Radboud Institute for Health Sciences, Nijmegen, Netherlands
| | - Joost van Rosmalen
- Department of Biostatistics, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
- Department of Epidemiology, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Monique van Dijk
- Pediatric Intensive Care, Department of Pediatric Surgery, Erasmus MC-Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam, Netherlands
- Intensive Care Adults, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Dick Tibboel
- Pediatric Intensive Care, Department of Pediatric Surgery, Erasmus MC-Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam, Netherlands
- Intensive Care Adults, Erasmus MC, University Medical Center Rotterdam, Rotterdam, Netherlands
| | - Erwin Ista
- Pediatric Intensive Care, Department of Pediatric Surgery, Erasmus MC-Sophia Children's Hospital, University Medical Center Rotterdam, Rotterdam, Netherlands
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28
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Mahrous RSS, Ismail TI. Comparison of subomohyoid plane block and interscalene nerve block for arthroscopic shoulder surgery. EGYPTIAN JOURNAL OF ANAESTHESIA 2022. [DOI: 10.1080/11101849.2022.2131348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- Rabab S. S Mahrous
- Department of Anesthesia and Surgical Intensive Care, Alexandria University, Alexandria, Egypt
| | - Tarek I Ismail
- Department of Anesthesia and Surgical Intensive Care, Helwan University, Cairo, Egypt
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29
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Characteristics of Diaphragmatic and Chest Wall Motion in People with Normal Pulmonary Function: A Study with Free-Breathing Dynamic MRI. J Clin Med 2022; 11:jcm11247276. [PMID: 36555894 PMCID: PMC9785439 DOI: 10.3390/jcm11247276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 12/05/2022] [Accepted: 12/05/2022] [Indexed: 12/13/2022] Open
Abstract
Objective: We aimed to quantitatively study the characteristic of diaphragm and chest wall motion using free-breathing dynamic magnetic resonance imaging (D-MRI) in Chinese people with normal lung function. Methods: 74 male subjects (mean age, 37 ± 11 years old) were prospectively enrolled, and they underwent high-resolution CT(HRCT), pulmonary functional tests (PFTs), and D-MRI in the same day. D-MRI was acquired with a gradient-echo sequence during the quiet and deep breathing. The motion of the diaphragm and chest wall were respectively assessed by measuring thoracic anteroposterior diameter (AP), left−right diameter (LR), cranial−caudal diameter (CC), and thoracic area ratios between end-inspiration and end-expiration. The effect of age, body mass index (BMI), and smoking on respiratory muscle function was also analyzed. Results: The mean ratio of right and left AP was greater than that of LR on three transversal planes during both quiet and deep breathing. The mean ratio at the anterior diaphragm (AND, Quiet: 1.04 ± 0.03; Deep: 1.15 ± 0.09) was weaker than that of the apex (vs. APD, Quiet: 1.08 ± 0.05, p < 0.001; Deep: 1.29 ± 0.12, p < 0.001) and posterior diaphragm (vs. POD, Quiet: 1.09 ± 0.04, p < 0.001; Deep: 1.30 ± 0.12, p < 0.001) both in quiet and deep breathing. Compared with non-smokers, the left AP and thoracic area ratios in smokers were significantly decreased (p < 0.05). However, the ratios of AP, LR, CC, and thoracic area on each plane were similar among groups in different age and BMI. Conclusions: During both quiet and deep breathing, the chest wall motion is prominent in the anteroposterior direction. The motions of diaphragm apex and posterior diaphragm were more prominent than that of the anterior diaphragm. Smoking may affect the respiratory muscle mobility. Dynamic MRI can quantitatively evaluate the motion of respiratory muscles.
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30
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Maranta F, Cianfanelli L, Rizza V, Cartella I, Pistoni A, Avitabile M, Meloni C, Castiglioni A, De Bonis M, Alfieri O, Cianflone D. Diaphragm Dysfunction after Cardiac Surgery: Insights from Ultrasound Imaging during Cardiac Rehabilitation. ULTRASOUND IN MEDICINE & BIOLOGY 2022; 48:1179-1189. [PMID: 35351317 DOI: 10.1016/j.ultrasmedbio.2022.02.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2021] [Revised: 01/31/2022] [Accepted: 02/10/2022] [Indexed: 06/14/2023]
Abstract
Diaphragm dysfunction is common after cardiac surgery and can be evaluated with ultrasonography (US). We aimed at assessing with US the incidence of diaphragmatic dysfunction and the impact of cardiovascular rehabilitation (CR) on its recovery. A single-center cohort study was performed. Patients were enrolled after cardiac surgery. The 6-min walking test (6MWT) and diaphragm US were performed at CR admission and after 10 rehabilitative sessions. One hundred eighty-five patients were eligible for final analysis. One hundred thirty-one patients (70.8%) were found to have diaphragm dysfunction (excursion <2 cm). After CR, 68 patients regained normal diaphragmatic function; those with persistent dysfunction had a lower level of functional performance on the 6MWT (metabolic equivalents of tasks: 3.3 vs. 3.6, p = 0.013). The patients who underwent combined surgery (adjusted odds ratio [aOR] = 4.09, p = 0.001) and those with post-operative pneumothorax (aOR = 3.02, p = 0.042) were at increased risk of failure to improve diaphragmatic excursion. US parameters were more powerful tools in predicting diaphragmatic evolution compared with the 6MWT indexes: baseline diaphragm excursion and thickening fraction were associated with complete diaphragmatic functional recovery after CR (aOR = 9.101, p < 0.001, and aOR = 1.058, p = 0.020 respectively). US is a valuable tool for the assessment of post-operative diaphragmatic dysfunction and can identify patients at risk of diaphragmatic recovery failure.
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Affiliation(s)
- Francesco Maranta
- Cardiac Rehabilitation Unit, San Raffaele Scientific Institute, Milan, Italy.
| | - Lorenzo Cianfanelli
- Cardiac Rehabilitation Unit, San Raffaele Scientific Institute, Milan, Italy
| | | | - Iside Cartella
- School of Medicine and Surgery, Milano-Bicocca University, Milan, Italy
| | - Anna Pistoni
- General Practitioner Lombardy Training Program, Pavia, Italy
| | - Maria Avitabile
- Cardiac Rehabilitation Unit, San Raffaele Scientific Institute, Milan, Italy
| | - Carlo Meloni
- Cardiac Rehabilitation Unit, San Raffaele Scientific Institute, Milan, Italy
| | - Alessandro Castiglioni
- Vita-Salute San Raffaele University, Milan, Italy; Cardiac Surgery Department, San Raffaele Scientific Institute, Milan, Italy
| | - Michele De Bonis
- Vita-Salute San Raffaele University, Milan, Italy; Cardiac Surgery Department, San Raffaele Scientific Institute, Milan, Italy
| | - Ottavio Alfieri
- Cardiac Surgery Department, San Raffaele Scientific Institute, Milan, Italy
| | - Domenico Cianflone
- Cardiac Rehabilitation Unit, San Raffaele Scientific Institute, Milan, Italy; Vita-Salute San Raffaele University, Milan, Italy
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31
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Monro M. A long COVID patient and their experience of osteopathic care: A case report. INT J OSTEOPATH MED 2022. [DOI: 10.1016/j.ijosm.2022.05.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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32
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Effect of Acupuncture on Diaphragm Function in Healthy Volunteers: A Pilot Clinical Study. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2022; 2022:6608200. [PMID: 35677369 PMCID: PMC9168091 DOI: 10.1155/2022/6608200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 04/28/2022] [Accepted: 05/14/2022] [Indexed: 11/18/2022]
Abstract
Introduction In western medicine, the diaphragm is the main inspiratory muscle. It is involved in the postural control of the trunk and contributes to balance performance. In traditional Chinese medicine (TCM), the diaphragm represents a gateway between the lower and upper parts of the body, and it regulates the descending and ascending functions of the whole organism. The aim of this study was to assess the effect of acupuncture on diaphragm function. Methods A proof-of-concept, prospective, controlled, pilot trial in healthy volunteers. Respiratory rate, inspired volume, diaphragm excursion, and thickening were measured during tidal and maximal breathing at baseline and after sham or real acupuncture. Acupuncture was performed on Yanglingquan (GB34), Tai Chong (LV3), Danzhong (CV17), Geshu (BL17), and Geguan (BL46). Results Ten participants were enrolled (6 males, weight 71 ± 12 kg, height 173 ± 9 cm, BMI 21 ± 1.3 kg/m2). During tidal breathing, tidal volume, diaphragm displacement, and end-expiratory diaphragm thickness did not change with sham or real acupuncture as compared to baseline; thickening ratio was 43.5 ± 16.6 vs. 31.3 ± 14.9 (sham) vs. 30.8 ± 15.3% (baseline), p=0.1066. During breaths at vital capacity, the acupuncture group, as compared to both baseline and sham acupuncture, had a trend toward a larger tidal volume (3840 ± 690 vs. 3110 ± 880 vs. 3230 ± 750 ml, p=0.1247) and showed a significantly higher thickening ratio (270.6 ± 136.4 vs. 172.4 ± 57.4 vs. 188.6 ± 41.7%, p=0.0414). Conclusions Acupuncture significantly influenced diaphragm function in healthy volunteers, improving its inspiratory thickening fraction during breaths at vital capacity, as compared to no or sham acupuncture.
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Fiott DL, Gauci J, Pace Bardon M, Balzan M. Type 2 respiratory failure secondary to left hemidiaphragmatic paralysis. Breathe (Sheff) 2022; 18:210165. [PMID: 36338253 PMCID: PMC9584595 DOI: 10.1183/20734735.0165-2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 02/22/2022] [Indexed: 11/29/2022] Open
Abstract
A 73-year-old man presented to the emergency department with worsening orthopnoea and exertional dyspnoea. He denied any other cardiorespiratory symptoms. The patient had a body mass index (BMI) of 23.3 kg·m−2 (height 163 cm, weight 62 kg). Lung function tests 3 months before admission showed a ratio of forced expiratory volume in 1 s (FEV1) to forced vital capacity (FVC) of 88%. He had a past medical history of hypothyroidism, for which he was on levothyroxine 50 μg daily, and type 2 diabetes mellitus, for which he was on metformin 500 mg twice daily. Past surgical history included a gastrectomy 3 years prior to admission performed for gastric cancer, which was subsequently complicated by a subphrenic abscess, pancreatitis and residual pancreatic insufficiency. The patient was a lifelong non-smoker, worked in construction, reared birds as a hobby, and lived in an urban area. He was not on any other medication. This case describes an uncommon presentation of type 2 respiratory failure secondary to left hemidiaphragmatic paralysis. Emphasis is on the multitude of possible causes of hemidiaphragmatic paralysis and how to manage such a presentation.https://bit.ly/3Mcd2XI
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Arancibia-Hernández YL, Aranda-Rivera AK, Cruz-Gregorio A, Pedraza-Chaverri J. Antioxidant/anti-inflammatory effect of Mg 2+ in coronavirus disease 2019 (COVID-19). Rev Med Virol 2022; 32:e2348. [PMID: 35357063 PMCID: PMC9111052 DOI: 10.1002/rmv.2348] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 03/09/2022] [Accepted: 03/17/2022] [Indexed: 12/26/2022]
Abstract
Severe acute respiratory syndrome coronavirus type 2 (SARS-CoV-2) causes coronavirus disease 2019 (COVID-19), characterised by high levels of inflammation and oxidative stress (OS). Oxidative stress induces oxidative damage to lipids, proteins, and DNA, causing tissue damage. Both inflammation and OS contribute to multi-organ failure in severe cases. Magnesium (Mg2+ ) regulates many processes, including antioxidant and anti-inflammatory responses, as well as the proper functioning of other micronutrients such as vitamin D. In addition, Mg2+ participates as a second signalling messenger in the activation of T cells. Therefore, Mg2+ deficiency can cause immunodeficiency, exaggerated acute inflammatory response, decreased antioxidant response, and OS. Supplementation with Mg2+ has an anti-inflammatory response by reducing the levels of nuclear factor kappa B (NF-κB), interleukin (IL) -6, and tumor necrosis factor alpha. Furthermore, Mg2+ supplementation improves mitochondrial function and increases the antioxidant glutathione (GSH) content, reducing OS. Therefore, Mg2+ supplementation is a potential way to reduce inflammation and OS, strengthening the immune system to manage COVID-19. This narrative review will address Mg2+ deficiency associated with a worse disease prognosis, Mg2+ supplementation as a potent antioxidant and anti-inflammatory therapy during and after COVID-19 disease, and suggest that randomised controlled trials are indicated.
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Affiliation(s)
| | - Ana Karina Aranda-Rivera
- Facultad de Química, Departamento de Biología, Laboratorio F-315, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - Alfredo Cruz-Gregorio
- Facultad de Química, Departamento de Biología, Laboratorio F-315, Universidad Nacional Autónoma de México, Mexico City, Mexico
| | - José Pedraza-Chaverri
- Facultad de Química, Departamento de Biología, Laboratorio F-315, Universidad Nacional Autónoma de México, Mexico City, Mexico
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Roy F, Korathanakhun P, Karamchandani J, Dubé BP, Landon-Cardinal O, Routhier N, Peyronnard C, Massie R, Leclair V, Meyer A, Bourré-Tessier J, Satoh M, Fritzler MJ, Senécal JL, Hudson M, O'Ferrall EK, Troyanov Y, Ellezam B, Makhzoum JP. Myositis with prominent B-cell aggregates causing shrinking lung syndrome in systemic lupus erythematosus: a case report. BMC Rheumatol 2022; 6:11. [PMID: 35168668 PMCID: PMC8848966 DOI: 10.1186/s41927-021-00240-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Accepted: 11/16/2021] [Indexed: 11/17/2022] Open
Abstract
Background Shrinking lung syndrome (SLS) is a rare manifestation of systemic lupus erythematosus (SLE) characterized by decreased lung volumes and diaphragmatic weakness in a dyspneic patient. Chest wall dysfunction secondary to pleuritis is the most commonly proposed cause. In this case report, we highlight a new potential mechanism of SLS in SLE, namely diaphragmatic weakness associated with myositis with CD20 positive B-cell aggregates. Case presentation A 51-year-old Caucasian woman was diagnosed with SLE and secondary Sjögren’s syndrome based on a history of pleuritis, constrictive pericarditis, polyarthritis, photosensitivity, alopecia, oral ulcers, xerophthalmia and xerostomia. Serologies were significant for positive antinuclear antibodies, anti-SSA, lupus anticoagulant and anti-cardiolopin. Blood work revealed a low C3 and C4, lymphopenia and thrombocytopenia. She was treated with with low-dose prednisone and remained in remission with oral hydroxychloroquine. Seven years later, she developed mild proximal muscle weakness and exertional dyspnea. Pulmonary function testing revealed a restrictive pattern with small lung volumes. Pulmonary imaging showed elevation of the right hemidiaphragm without evidence of interstitial lung disease. Diaphragmatic ultrasound was suggestive of profound diaphragmatic weakness and dysfunction. Based on these findings, a diagnosis of SLS was made. Her proximal muscle weakness was investigated, and creatine kinase (CK) levels were normal. Electromyography revealed fibrillation potentials in the biceps, iliopsoas, cervical and thoracic paraspinal muscles, and complex repetitive discharges in cervical paraspinal muscles. Biceps muscle biopsy revealed dense endomysial lymphocytic aggregates rich in CD20 positive B cells, perimysial fragmentation with plasma cell-rich perivascular infiltrates, diffuse sarcolemmal upregulation of class I MHC, perifascicular upregulation of class II MHC, and focal sarcolemmal deposition of C5b-9. Treatment with prednisone 15 mg/day and oral mycophenolate mofetil 2 g/day was initiated. Shortness of breath and proximal muscle weakness improved significantly. Conclusion Diaphragmatic weakness was the inaugural manifestation of myositis in this patient with SLE. The spectrum of myologic manifestations of myositis with prominent CD20 positive B-cell aggregates in SLE now includes normal CK levels and diaphragmatic involvement, in association with SLS.
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Affiliation(s)
- Flavie Roy
- Department of Medicine, Université de Montréal, Montreal, QC, Canada
| | - Pat Korathanakhun
- Department of Pathology, Montreal Neurological Hospital and Institute, McGill University, Montreal, QC, Canada
| | - Jason Karamchandani
- Department of Pathology, Montreal Neurological Hospital and Institute, McGill University, Montreal, QC, Canada
| | - Bruno-Pierre Dubé
- Division of Pulmonary Medicine, Department of Medicine, Centre Hospitalier de l'Université de Montréal, Université de Montréal, Montreal, QC, Canada
| | - Océane Landon-Cardinal
- Division of Rheumatology, Department of Medicine, Centre Hospitalier de l'Université de Montréal, Université de Montréal, Montreal, QC, Canada.,Department of Medicine, CHUM Research Center, Université de Montréal, Montreal, QC, Canada
| | - Nathalie Routhier
- Division of Internal Medicine, Department of Medicine, Hôpital du Sacré-Coeur de Montréal, Université de Montréal, 5400 Gouin O Blvd, Montreal, QC, H4J 1C5, Canada
| | - Caroline Peyronnard
- Division of Neurology, Department of Medicine, Hôpital du Sacré-Coeur de Montréal, Université de Montréal, Montreal, QC, Canada
| | - Rami Massie
- Department of Neurology and Neurosurgery, Montreal Neurological Hospital and Institute, McGill University, Montreal, QC, Canada
| | - Valérie Leclair
- Division of Rheumatology, Department of Medicine, Jewish General Hospital, McGill University, Montreal, QC, Canada
| | - Alain Meyer
- Faculté de médecine, Université de Strasbourg, Service de physiologie, explorations fonctionnelles musculaire, Service de rhumatologie et Centre de références des maladies autoimmunes rares, EA 3072, Hôpitaux universitaires de Strasbourg, Université de Strasbourg, Strasbourg, France
| | - Josiane Bourré-Tessier
- Division of Rheumatology, Department of Medicine, Centre Hospitalier de l'Université de Montréal, Université de Montréal, Montreal, QC, Canada.,Department of Medicine, CHUM Research Center, Université de Montréal, Montreal, QC, Canada
| | - Minoru Satoh
- Department of Clinical Nursing, School of Health Sciences, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Marvin J Fritzler
- Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Jean-Luc Senécal
- Division of Rheumatology, Department of Medicine, Centre Hospitalier de l'Université de Montréal, Université de Montréal, Montreal, QC, Canada.,Department of Medicine, CHUM Research Center, Université de Montréal, Montreal, QC, Canada
| | - Marie Hudson
- Division of Rheumatology, Department of Medicine, Jewish General Hospital, McGill University, Montreal, QC, Canada
| | - Erin K O'Ferrall
- Department of Pathology, Montreal Neurological Hospital and Institute, McGill University, Montreal, QC, Canada.,Department of Neurology and Neurosurgery, Montreal Neurological Hospital and Institute, McGill University, Montreal, QC, Canada
| | - Yves Troyanov
- Division of Rheumatology, Department of Medicine, Hôpital du Sacré-Coeur de Montréal, Université de Montréal, Montreal, QC, Canada
| | - Benjamin Ellezam
- Department of Pathology, Centre Hospitalier Universitaire Sainte-Justine, Université de Montréal, Montreal, QC, Canada
| | - Jean-Paul Makhzoum
- Division of Internal Medicine, Department of Medicine, Hôpital du Sacré-Coeur de Montréal, Université de Montréal, 5400 Gouin O Blvd, Montreal, QC, H4J 1C5, Canada.
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36
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Puchongmart C, Nakornchai T, Rittayamai N, Monsomboon A, Prapruetkit N, Limsuwat C, Ruangsomboon O, Chakorn T. Number of attempts required by emergency physicians to achieve competency in diaphragmatic ultrasound imaging. JOURNAL OF CLINICAL ULTRASOUND : JCU 2022; 50:256-262. [PMID: 34972254 DOI: 10.1002/jcu.23133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Accepted: 11/24/2021] [Indexed: 06/14/2023]
Abstract
PURPOSE This research aimed to determine the number of attempts that emergency physicians need to become proficient in undertaking diaphragmatic ultrasound imaging. METHODS A prospective observational study was conducted at the emergency department (ED) of a tertiary-care university hospital. Sixteen emergency physicians were each required to obtain a set of images of the right hemidiaphragm of five dyspneic patients using both diaphragmatic excursion and thickness techniques. The images were subsequently reviewed by a specialist using American College of Emergency Physician guidelines. If the evaluations of a physician did not reach the expected standard, the physician was to be given feedback and requested to collect images from another five patients. The process was to be repeated until such time as the images obtained by the physician were deemed to be up to standard. RESULTS Eighty patients, twelve emergency medicine residents, and four attending physicians were enrolled. Following a didactic session on diaphragmatic ultrasound imaging and its interpretation, practicing on five patients proved sufficient to achieve an adequate level of competency in conducting diaphragmatic ultrasound examinations. CONCLUSION Practicing on five patients is sufficient for emergency physicians to achieve an adequate level of competency in conducting right-sided diaphragmatic ultrasound examinations.
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Affiliation(s)
- Chanokporn Puchongmart
- Department of Emergency Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Tanyaporn Nakornchai
- Department of Emergency Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Nuttapol Rittayamai
- Department of Internal Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Apichaya Monsomboon
- Department of Emergency Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Nattakarn Prapruetkit
- Department of Emergency Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Chok Limsuwat
- Department of Emergency Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Onlak Ruangsomboon
- Department of Emergency Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
| | - Tipa Chakorn
- Department of Emergency Medicine, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
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37
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Gill C, Garg A, Fakih R, Hamzeh NY. Bilateral diaphragmatic dysfunction: A cause of persistent dyspnea in patients with post-acute sequelae of SARS-CoV-2. SAGE Open Med Case Rep 2022. [DOI: 10.1177/2050313x221105990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Persistent shortness of breath is one of the most common concerns reported by patients with post-acute sequelae of SARS-CoV-2. Here, we present a case of bilateral diaphragmatic paralysis as a cause shortness of breath that developed after SARS-CoV-2 infection. A middle-aged gentleman with history of sleep apnea and body mass index 27.9 kg/m2 presented to our post-COVID clinic with 3 months of dyspnea and orthopnea after contracting SARS-CoV-2 in November 2020. During acute infection, he was hospitalized for hypoxemia, which improved with steroids and supplemental oxygen. At 3 months, he continued to report dyspnea and orthopnea. On examination, he had tachycardia and increased respiratory rate with paradoxical respiratory abdominal movement. Chest imaging showed elevated bilateral hemidiaphragms without any parenchymal lung disease. Pulmonary function test revealed severe ventilatory defect with restrictive lung disease. He was diagnosed with bilateral diaphragmatic dysfunction which was confirmed by absence of evoked potentials in diaphragm after phrenic nerve stimulation bilaterally. He was advised to use continuous positive airway pressure machine to assist with breathing at night. At his last follow-up (1-year post-infection), he was symptomatically improving without specific interventions.
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Affiliation(s)
- Christine Gill
- Department of Neurology, The University of Iowa, Iowa City, IA, USA
| | - Alpana Garg
- Division of General Internal Medicine, Department of Internal Medicine, The University of Iowa, Iowa City, IA, USA
| | - Rami Fakih
- Department of Neurology, The University of Iowa, Iowa City, IA, USA
| | - Nabeel Y Hamzeh
- Division of Pulmonary, Critical Care and Occupational Medicine, Department of Internal Medicine, The University of Iowa, Iowa City, IA, USA
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Abstract
While the traditional lung function tests are used to assess lung capacity and pulmonary function, they cannot evaluate respiratory driving function and the integrity of the conduction pathway from the central nervous system to the respiratory motor neuron in the spinal cord and to the diaphragm. The inspiratory trigger is sent from the central nervous system through the phrenic nerve and drives the diaphragm to generate inspiratory movement. Therefore, phrenic nerve stimulation and diaphragmatic electromyography are two fundamental methods to assess respiratory function. There are several useful tools to assess respiratory motor system including electrical or magnetic phrenic nerve stimulation, diaphragmatic needle electromyography, and diaphragmatic ultrasound. By these means, physicians can assess current respiratory status in different neurological diseases that affect respiratory muscles, follow-up of the severity of respiratory impairment, help to predict the chance of successfully weaning from ventilatory support, and confirm clinical diagnoses such as diaphragmatic myoclonus. Although some of these tests require special training, applying these neurophysiological assessments in clinical practice is highly recommended.
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Affiliation(s)
- Yih-Chih Jacinta Kuo
- Department of Neurology, National Taiwan University Hospital Hsin-Chu Branch, Hsin-Chu, Taiwan
| | - Kai-Hsiang Stanley Chen
- Department of Neurology, National Taiwan University Hospital Hsin-Chu Branch, Hsin-Chu, Taiwan.
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39
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Lux S, Ramos D, Pinto A, Schilling S, Salinas M. Diaphragm Ultrasound in the Evaluation of Diaphragmatic Dysfunction in Lung Disease. Open Respir Med J 2021. [DOI: 10.2174/1874306402115010082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The diaphragm is the most important respiratory muscle, and its function may be limited by acute and chronic diseases. A diaphragmatic ultrasound, which quantifies dysfunction through different approaches, is useful in evaluating work of breathing and diaphragm atrophy, predicting successful weaning, and diagnosing critically ill patients. This technique has been used to determine reduced diaphragmatic function in patients with chronic obstructive pulmonary disease and interstitial diseases, while in those with COVID-19, diaphragmatic ultrasound has been used to predict weaning failure from mechanical ventilation.
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40
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Saisawart P, Sutthigran S, Soontornvipart K, Thanaboonnipat C, Darawiroj D, Choisunirachon N. The Feasibility of Ultrasonographic Diaphragmatic Excursion in Healthy Dogs: Effect of Positioning, Diaphragmatic Location, and Body Weight of Dogs. Front Vet Sci 2021; 8:763556. [PMID: 34859091 PMCID: PMC8631322 DOI: 10.3389/fvets.2021.763556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Accepted: 10/07/2021] [Indexed: 11/17/2022] Open
Abstract
Diaphragmatic excursion (DE) has been utilized for detecting respiratory related problems in humans. However, several factors should be considered such as the ultrasound technique and factors intrinsic to patients. Nevertheless, knowledge of the effect of these factors on DE in dogs is still lacking. The aim of this study was to evaluate the proper ultrasound technique by varying postures and diaphragmatic locations for DE measurement and to explore intrinsic factors such as diaphragmatic sides, sex, and body weight of dogs on DE. The prospective, analytic, cross-sectional study included 44 healthy dogs; 12 beagles and 32 dogs of other breeds. The experiment was divided into (i) an exploration of the proper ultrasound technique by varying postures (supine, standing, and recumbent in each of the right and left lateral positions), diaphragmatic locations (middle crus and proximal to the last rib), and diaphragmatic sublocations (xiphoid, mid, and proximal rib) for detection of DE and (ii) the evaluation of canine intrinsic factors affecting DE. The results show that the mid-diaphragmatic sublocation in the middle crus area in almost all positions revealed the highest percentage DE detection. However, DEs were revealed to be more accessible in the supine position. There was no significant difference in DE between the right and the left diaphragms or between the sexes of beagle dogs. However, body weight was significantly correlated with the DE among dogs of various sizes. In conclusion, the posture of the dogs and the diaphragmatic location can affect DE evaluation. Neither sex nor diaphragmatic side had an influence, but body weight was revealed as a major factor in DE in dogs.
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Affiliation(s)
- Phasamon Saisawart
- Department of Surgery, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
| | - Somchin Sutthigran
- Department of Surgery, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
| | - Kumpanart Soontornvipart
- Department of Surgery, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
| | - Chutimon Thanaboonnipat
- Department of Surgery, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
| | - Damri Darawiroj
- Department of Anatomy, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
| | - Nan Choisunirachon
- Department of Surgery, Faculty of Veterinary Science, Chulalongkorn University, Bangkok, Thailand
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41
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Tracheobronchoplasty and Diaphragmatic Plication under VV ECMO for Combined ECAC and Diaphragmatic Paralysis. Case Rep Pulmonol 2021; 2021:5565754. [PMID: 34840846 PMCID: PMC8626178 DOI: 10.1155/2021/5565754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 11/02/2021] [Accepted: 11/09/2021] [Indexed: 11/17/2022] Open
Abstract
The coexistence of expiratory central airway collapse and diaphragmatic paralysis presents a diagnostic and treatment challenge. Both entities are underrecognized causes of dyspnea, cough, sputum production, and orthopnea. Optimal treatment must be individualized and is best achieved by a multidisciplinary team. We present a case of a patient with profound functional impairment from dyspnea and hypoxemia due to expiratory central airway collapse, complicated by bronchiectasis from recurrent respiratory infections, and diaphragmatic paralysis.
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42
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Spanier AM, Gragg JI. Myasthenic Crisis After Recurrent COVID-19 Infection. Fed Pract 2021; 38:382-386. [PMID: 34733091 DOI: 10.12788/fp.0166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
A patient with myasthenia gravis who survived 2 COVID-19 infections required plasmapheresis to recover from an acute crisis.
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Affiliation(s)
- Adam M Spanier
- is a Resident, and is a Faculty Member, both at Carl R. Darnall Army Medical Center in Fort Hood, Texas
| | - James I Gragg
- is a Resident, and is a Faculty Member, both at Carl R. Darnall Army Medical Center in Fort Hood, Texas
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43
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Nafisa S, Messer B, Downie B, Ehilawa P, Kinnear W, Algendy S, Sovani M. A retrospective cohort study of idiopathic diaphragmatic palsy: a diagnostic triad, natural history and prognosis. ERJ Open Res 2021; 7:00953-2020. [PMID: 34527723 PMCID: PMC8435796 DOI: 10.1183/23120541.00953-2020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Accepted: 06/21/2021] [Indexed: 11/17/2022] Open
Abstract
Background Isolated diaphragmatic palsy in the absence of progressive neuromuscular disease is uncommon. It poses diagnostic challenges and limited data are available regarding prognosis. We present retrospective cohort data from two large teaching hospitals in the United Kingdom. Method 60 patients who were assessed either as inpatients or outpatients were included in this study. Patients with progressive neuromuscular disease were excluded. Clinical presentation, tests of respiratory muscle function (sitting/supine vital capacity, maximal expiratory pressure (MEP), maximal inspiratory pressure (MIP) and sniff nasal inspiratory pressure (SNIP)) and outcomes were recorded. Results For patients with diaphragmatic palsy, mean±sd seated and supine vital capacity pre-noninvasive ventilation (NIV) were reduced at 1.7±1.2 L and 1.1±0.9 L, respectively, with a mean±sd postural fall in vital capacity of 42±0.16%. The mean MEP/MIP and MEP/SNIP ratios for diaphragmatic palsy were 3 and 3.5, respectively. After a year of treatment with NIV, mean±sd upright and supine vital capacity had increased to 2.1±0.9 L and 1.8±1 L, respectively, and the mean±sd fall in vital capacity from sitting to supine reduced to 29±0.17%. MEP/MIP and MEP/SNIP ratios reduced to 2.6 and 2.9, respectively, from the pre-NIV values. The values of postural fall in vital capacity correlated (p<0.05) with MEP/MIP and MEP/SNIP ratio (r2=0.86 and r2=0.7, respectively). Conclusion Tests of respiratory muscle strength are valuable in the diagnostic workup of patients with unexplained dyspnoea. A triad of 1) orthopnoea, with 2) normal lung imaging and 3) MEP/MIP and/or MEP/SNIP ratio ≥2.7 points towards isolated diaphragmatic palsy. This needs to be confirmed by prospective studies. Tests of respiratory muscle strength are valuable in the diagnostic workup of patients with unexplained dyspnoea. A triad of 1) orthopnoea with 2) normal lung imaging and 3) MEP/MIP and/or MEP/SNIP ratios ≥2.7 points towards isolated diaphragmatic palsy.https://bit.ly/2SpOXW2
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Affiliation(s)
- Syeda Nafisa
- Respiratory Medicine, Nottingham University Hospitals, Nottingham, UK.,Dept of Respiratory Medicine, Sherwood Forest Hospital NHS Foundation Trust, Mansfield, UK
| | - Ben Messer
- North East Assisted Ventilation Service, Newcastle Upon Tyne Hospital NHS Foundation Trust, Newcastle Upon Tyne, UK
| | - Beatrice Downie
- Dept of Respiratory Medicine, Newcastle Upon Tyne Hospital NHS Foundation Trust, Newcastle Upon Tyne, UK
| | - Patience Ehilawa
- Respiratory Medicine, Nottingham University Hospitals, Nottingham, UK.,Dept of Respiratory Medicine, Sherwood Forest Hospital NHS Foundation Trust, Mansfield, UK
| | - William Kinnear
- Dept of Sport Science, Nottingham Trent University, Nottingham, UK
| | - Sherif Algendy
- Dept of Respiratory Medicine, Sherwood Forest Hospital NHS Foundation Trust, Mansfield, UK
| | - Milind Sovani
- Respiratory Medicine, Nottingham University Hospitals, Nottingham, UK
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44
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Molnár V, Molnár A, Lakner Z, Tárnoki DL, Tárnoki ÁD, Jokkel Z, Szabó H, Dienes A, Angyal E, Németh F, Kunos L, Tamás L. Examination of the diaphragm in obstructive sleep apnea using ultrasound imaging. Sleep Breath 2021; 26:1333-1339. [PMID: 34478056 PMCID: PMC9418095 DOI: 10.1007/s11325-021-02472-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 07/31/2021] [Accepted: 08/09/2021] [Indexed: 11/02/2022]
Abstract
PURPOSE The aim of this study was to analyze the effect of obstructive sleep apnea (OSA) on the ultrasound (US) features of the diaphragm and to determine if diaphragmatic US may be a useful screening tool for patients with possible OSA. METHODS Patients complaining of snoring were prospectively enrolled for overnight polygraphy using the ApneaLink Air device. Thickness and motion of the diaphragm during tidal and deep inspiration were measured. Logistic regression was used to assess parameters of the diaphragm associated with OSA. RESULTS Of 100 patients, 64 were defined as having OSA. Thicknesses of the left and right hemidiaphragms were significantly different between OSA and control groups. Using a combination of diaphragmatic dimensions, diaphragm dilation, age, sex, and BMI, we developed an algorithm that predicted the presence of OSA with 91% sensitivity and 81% specificity. CONCLUSION A combination of anthropometric measurements, demographic factors, and US imaging may be useful for screening patients for possible OSA. These findings need to be confirmed in larger sample sizes in different clinical settings.
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Affiliation(s)
- Viktória Molnár
- Department of Otolaryngology and Head and Neck Surgery, Semmelweis University, Szigony u. 36, H-1083, Budapest, Hungary
| | - András Molnár
- Department of Otolaryngology and Head and Neck Surgery, Semmelweis University, Szigony u. 36, H-1083, Budapest, Hungary.
| | - Zoltán Lakner
- Faculty of Food Science, Szent István University, Budapest, Hungary
| | | | | | - Zsófia Jokkel
- Medical Imaging Centre, Semmelweis University, Budapest, Hungary
| | - Helga Szabó
- Medical Imaging Centre, Semmelweis University, Budapest, Hungary
| | - András Dienes
- Medical Imaging Centre, Semmelweis University, Budapest, Hungary
| | - Emese Angyal
- Department of Otolaryngology and Head and Neck Surgery, Semmelweis University, Szigony u. 36, H-1083, Budapest, Hungary
| | - Fruzsina Németh
- Department of Otolaryngology and Head and Neck Surgery, Semmelweis University, Szigony u. 36, H-1083, Budapest, Hungary
| | | | - László Tamás
- Department of Otolaryngology and Head and Neck Surgery, Semmelweis University, Szigony u. 36, H-1083, Budapest, Hungary
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Management of phrenic nerve injury post-cardiac surgery in the paediatric patient. Cardiol Young 2021; 31:1386-1392. [PMID: 34304750 DOI: 10.1017/s1047951121002882] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND Phrenic nerve injury is a common complication of cardiac and thoracic surgical procedures, with potentially severe effects on the health of a child. This review aims to summarise the available literature on the diagnosis and management of PNI post-cardiac surgery in paediatric patients with CHD. MAIN BODY The presence of injury post-surgery can be difficult to detect and may present with non-specific symptoms, emphasising the importance of an effective diagnostic strategy. Chest X-ray is usually the first investigation for a suspected diagnosis of PNI, which is usually confirmed using fluoroscopy, ultrasound scan, or phrenic nerve stimulation (gold standard). Management options include supportive ventilation and/or invasive diaphragmatic plication surgery. While the optimal timing of plication surgery remains controversial, it is now the most widely accepted treatment for PNI in children post-CHD surgery, especially for very young patients who cannot be weaned off supportive ventilation. Further research is needed to determine the optimal timing of surgical intervention for positive outcomes and to explore the benefits of using minimally invasive surgical techniques in children. CONCLUSION PNI is a common and serious complication of CHD surgery, therefore, its diagnosis and management in the paediatric population are of major importance. Further research is needed to determine the optimal timing of surgical intervention for positive outcomes and to explore the benefits of using minimally invasive surgical techniques in children.
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46
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Carlson CS, Brown SR, Wilson MW, Choi PJ. Noninvasive ventilation: An important option in the management of hemidiaphragm paralysis. J Card Surg 2021; 36:3921-3923. [PMID: 34260766 DOI: 10.1111/jocs.15824] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2021] [Accepted: 06/30/2021] [Indexed: 11/27/2022]
Abstract
Hemidiaphragm paralysis (HP) is a potential complication of cardiac surgery. While most patients are either asymptomatic or have mild symptoms, some are at risk of developing life-threatening hypercapnia. We present a case of a patient who developed HP after tricuspid valve replacement. Diaphragm plication was deferred due to underlying comorbidities, but over time she developed severe hypercapnic respiratory failure requiring intensive care unit admission. Chronic noninvasive ventilation therapy (NIV) was initiated, which improved her symptoms and hypercapnia and prevented further hospitalizations. For patients with iatrogenic HP unable to undergo diaphragm plication, Pulmonology referral for initiation of NIV should be strongly considered.
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Affiliation(s)
- Christie S Carlson
- Division of Pulmonary and Critical Care Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Sarah R Brown
- Division of Pulmonary and Critical Care Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Matthew W Wilson
- Division of Pulmonary and Critical Care Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Philip J Choi
- Division of Pulmonary and Critical Care Medicine, University of Michigan, Ann Arbor, Michigan, USA
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47
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Barbariol F, Deana C, Guadagnin GM, Cammarota G, Vetrugno L, Bassi F. Ultrasound diaphragmatic excursion during non-invasive ventilation in ICU: a prospective observational study. ACTA BIO-MEDICA : ATENEI PARMENSIS 2021; 92:e2021269. [PMID: 34212900 PMCID: PMC8343726 DOI: 10.23750/abm.v92i3.11609] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Accepted: 04/18/2021] [Indexed: 11/26/2022]
Abstract
Background and Aim: Diaphragmatic dysfunction is seen in up to 60% of critically ill patients with respiratory failure, and it is associated with worse outcomes. The functionality of the diaphragm can be studied with simple and codified bedside ultrasound evaluation. Diaphragm excursion is one of the most studied parameters. The aim of this study was to assess the prevalence of diaphragmatic dysfunction in critically ill non-intubated patients admitted to a general intensive care unit with acute respiratory failure. Methods: We collected data, including ultrasound diaphragm excursion, at 2 time points: at T0 (at the time of recruitment, just before starting NIV) and at T1 (after one hour of NIV). Results: A total of 47 patients were enrolled. The prevalence of diaphragm dysfunction was 42.5% (95% CI 28, 3 - 57,8). Surgical patients showed a higher incidence (relative risk of 1.97) than medical patients. Mean DE was not significantly different between NIV responders (1,35 ± 0.78 cm) and non-responders (1.21 ± 0.85 cm, p 0,6). Patients with diaphragmatic dysfunction responded positively to NIV in 60% (95% CI 36.0 - 80.9%) of cases, while patients without diaphragmatic dysfunction responded positively to the NIV trial in 70.4% (95% CI 49.8 - 86.2%) of cases (p = 0.54). Taking the use of ultrasound diaphragm excursion as a potential predictor of NIV response, the corresponding ROC curve had an area under the curve of 0.53; the best balance between sensitivity (58.1%) and specificity (62.5%) was obtained with a cut-off diaphragm excursion of 1.37 cm. Conclusions: Diaphragm dysfunction is particularly frequent in critically ill patients with respiratory failure. The functionality of the diaphragm can be effectively and easily tested by bedside ultrasound examination. Overall, our results point towards tentative evidence of a trend of a different response to NIV in patients with vs without diaphragmatic dysfunction. (www.actabiomedica.it)
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Affiliation(s)
- Federico Barbariol
- Department of Anesthesia and Intensive Care, Academic Hospital of Udine, Azienda Sanitaria Universitaria Friuli Centrale, Udine, Italy..
| | - Cristian Deana
- Anesthesia and Intensive Care Unit 1, Department of Anesthesia and Intensive Care, Azienda Sanitaria Universitaria Friuli Centrale, Udine, Italy..
| | - Giovanni Maria Guadagnin
- Anesthesia and Intensive Care, Palmanova Hospital, Azienda Sanitaria Universitaria Friuli Centrale, Udine, Italy..
| | | | - Luigi Vetrugno
- Department of Medical Area, University of Udine, Udine, Italy..
| | - Flavio Bassi
- Department of Anesthesia and Intensive Care, Academic Hospital of Udine, Azienda Sanitaria Universitaria Friuli Centrale, Udine, Italy..
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48
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Schreiber T, Brockmann M, Goßmann A, Kosse NJ, Stoelben E, Windisch W. Sarcoidosis involvement of the diaphragm leading to right diaphragmatic elevation: a case report. SARCOIDOSIS VASCULITIS AND DIFFUSE LUNG DISEASES 2021; 38:e2021011. [PMID: 34316253 PMCID: PMC8288201 DOI: 10.36141/svdld.v38i2.8042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Accepted: 06/11/2021] [Indexed: 11/03/2022]
Abstract
A 69-year-old male Caucasian presenting with dyspnea on exertion related to unilateral diaphragmatic dysfunction as caused by sarcoidosis is described. First, right diaphragmatic elevation was unexplained, while the patient presented with a restrictive pattern in lung function testing using bodyplethysmography and with reduced global and diaphragmatic respiratory muscle strength as evidenced by respiratory pressures. Subsequently, surgical diaphragm plication was performed, unfortunately, without any clinical improvement. Microscopic examination of diaphragm sections revealed a lymphocytic myositis with granulomatous pleuritis showing multiple non-caseating epithelioid granulomas. Accordingly, a lymphocytic alveolitis (26% lymphocytes) with an elevated CD4/CD8 T cell ratio of 8.0% and elevated serum parameters (neopterin and sIL-2 receptor) were established. Consequently, the diagnosis of pulmonary sarcoidosis with diaphragm involvement but without extrapulmonary involvement has been established. Therefore, sarcoidosis needs to be considered in any patient presenting with unilateral diaphragmatic dysfunction. The optimal treatment strategy, however, needs to be established in the future.
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Affiliation(s)
- Tina Schreiber
- Department of Pneumology, Cologne Merheim Hospital, Kliniken der Stadt Köln gGmbH, Faculty of Health/School of Medicine, Witten/Herdecke University, Cologne, Germany.,Hospital Bethanien Solingen, Clinic of Pneumology and Allergology, Center for Sleep Medicine and Respiratory Care, Solingen, Germany
| | - Michael Brockmann
- Department of Pathology, Cologne Merheim Hospital, Kliniken der Stadt Köln gGmbH, Cologne, Germany
| | - Axel Goßmann
- Department of Radiology, Cologne Merheim Hospital, Kliniken der Stadt Köln gGmbH, Cologne, Germany
| | - Nils Juriaan Kosse
- Department of Thoraxic Surgery, Cologne Merheim Hospital, Kliniken der Stadt Köln gGmbH, Faculty of Health/School of Medicine, Witten/Herdecke University, Cologne, Germany
| | - Erich Stoelben
- Department of Thoraxic Surgery, Cologne Merheim Hospital, Kliniken der Stadt Köln gGmbH, Faculty of Health/School of Medicine, Witten/Herdecke University, Cologne, Germany
| | - Wolfram Windisch
- Department of Pneumology, Cologne Merheim Hospital, Kliniken der Stadt Köln gGmbH, Faculty of Health/School of Medicine, Witten/Herdecke University, Cologne, Germany
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49
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Leclair V, D'Aoust J, Gyger G, Landon-Cardinal O, Meyer A, O'Ferrall E, Karamchandani J, Massie R, Ellezam B, Satoh M, Troyanov Y, Fritzler MJ, Hudson M. Autoantibody profiles delineate distinct subsets of scleromyositis. Rheumatology (Oxford) 2021; 61:1148-1157. [PMID: 34146090 DOI: 10.1093/rheumatology/keab492] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 06/07/2021] [Indexed: 11/14/2022] Open
Abstract
OBJECTIVE Scleromyositis remains incompletely characterized owing in part to its heterogeneity. The purpose of this study was to explore the role of autoantibody profiles to define subsets of scleromyositis. METHODS Subjects with scleromyositis from a prospective cohort were divided into 3 groups based on autoantibody profiles: subjects with SSc-specific autoantibodies (anti-centromere, -topoisomerase 1, -RNA polymerase III, -Th/To, -fibrillarin), subjects with SSc-overlap autoantibodies (anti-PM/Scl, -U1RNP, -Ku), and subjects without SSc-related autoantibodies. Clinical features, laboratory tests, and histopathological findings were retrieved and compared between groups. RESULTS Of 42 scleromyositis subjects (79% female, mean age at diagnosis 55 years, mean disease duration 3.5 years), 8 (19%) subjects had SSc-specific autoantibodies, 14 (33%) SSc-overlap autoantibodies and 20 (48%) had no SSc-related autoantibodies. One-third had no skin involvement, a finding more frequent in the SSc-overlap subjects and those without SSc-related autoantibodies. Proximal and distal weakness was common and head drop/bent spine was found in 50% of the SSc-specific and 35% of the subjects without SSc-related autoantibodies. Of note, the group without SSc-related autoantibodies had the only cases of severe cardiac systolic dysfunction (n = 1) and scleroderma renal crisis (n = 1), as well as 3 out of the 4 cancers and 3 out of the 4 deaths. CONCLUSION In this carefully phenotyped series of scleromyositis subjects, absence of SSc-related autoantibodies was common and associated with distinct features and poor prognosis. Future studies are needed to validate these results and possibly identify novel autoantibodies or other biomarkers associated with scleromyositis.
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Affiliation(s)
- Valérie Leclair
- Department of Medicine, McGill University, Montreal, Canada.,Division of Rheumatology, Jewish General Hospital, Montreal, Canada
| | - Julie D'Aoust
- Department of Medicine, McGill University, Montreal, Canada
| | - Geneviève Gyger
- Department of Medicine, McGill University, Montreal, Canada.,Division of Rheumatology, Jewish General Hospital, Montreal, Canada
| | - Océane Landon-Cardinal
- Division of Rheumatology, Centre hospitalier de l'Université de Montréal (CHUM); CHUM Research Center; Department of Medicine, Université de Montréal, Montréal, Canada
| | - Alain Meyer
- Centre de Reference des Maladies Autoimmunes Rares service de rhumatologie, Exploration fonctionnelle musculaires service de physiologie Hôpitaux Universitaires de Strasbourg, EA3072 Université de Strasbourg, Strasbourg, France
| | - Erin O'Ferrall
- Department of Neurology and Neurosurgery, McGill University, Montreal Neurological Institute, Montreal, Canada.,Department of Pathology, McGill University, Montreal Neurological Institute, Montreal, Canada
| | - Jason Karamchandani
- Department of Pathology, McGill University, Montreal Neurological Institute, Montreal, Canada
| | - Rami Massie
- Department of Neurology and Neurosurgery, McGill University, Montreal Neurological Institute, Montreal, Canada
| | - Benjamin Ellezam
- Centre hospitalier universitaire Sainte-Justine, Montreal, Canada
| | - Minoru Satoh
- Department of Clinical Nursing, School of Health Sciences, University of Occupational and Environmental Health, Kitakyushu, Japan
| | - Yves Troyanov
- Division of Rheumatology, Department of Medicine, Hôpital du Sacre-Coeur de Montreal, Montreal, QC, Canada
| | | | - Marie Hudson
- Department of Medicine, McGill University, Montreal, Canada.,Division of Rheumatology, Jewish General Hospital, Montreal, Canada.,Lady Davis Institute for Medical Research, Jewish General Hospital, Montreal, Canada
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50
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MacAskill W, Hoffman B, Johnson MA, Sharpe GR, Mills DE. Pressure measurement characteristics of a micro-transducer and balloon catheters. Physiol Rep 2021; 9:e14831. [PMID: 33938126 PMCID: PMC8090844 DOI: 10.14814/phy2.14831] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Accepted: 03/14/2021] [Indexed: 11/24/2022] Open
Abstract
Respiratory pressure responses to cervical magnetic stimulation are important measurements in monitoring the mechanical function of the respiratory muscles. Pressures can be measured using balloon catheters or a catheter containing integrated micro‐transducers. However, no research has provided a comprehensive analysis of their pressure measurement characteristics. Accordingly, the aim of this study was to provide a comparative analysis of these characteristics in two separate experiments: (1) in vitro with a reference pressure transducer following a controlled pressurization; and (2) in vivo following cervical magnetic stimulations. In vitro the micro‐transducer catheter recorded pressure amplitudes and areas which were in closer agreement to the reference pressure transducer than the balloon catheter. In vivo there was a main effect for stimulation power and catheter for esophageal (Pes), gastric (Pga), and transdiaphragmatic (Pdi) pressure amplitudes (p < 0.001) with the micro‐transducer catheter recording larger pressure amplitudes. There was a main effect of stimulation power (p < 0.001) and no main effect of catheter for esophageal (p = 0.481), gastric (p = 0.923), and transdiaphragmatic (p = 0.964) pressure areas. At 100% stimulator power agreement between catheters for Pdi amplitude (bias =6.9 cmH2O and LOA −0.61 to 14.27 cmH2O) and pressure areas (bias = −0.05 cmH2O·s and LOA −1.22 to 1.11 cmH2O·s) were assessed. At 100% stimulator power, and compared to the balloon catheters, the micro‐transducer catheter displayed a shorter 10–90% rise time, contraction time, latency, and half‐relaxation time, alongside greater maximal rates of change in pressure for esophageal, gastric, and transdiaphragmatic pressure amplitudes (p < 0.05). These results suggest that caution is warranted if comparing pressure amplitude results utilizing different catheter systems, or if micro‐transducers are used in clinical settings while applying balloon catheter‐derived normative values. However, pressure areas could be used as an alternative point of comparison between catheter systems.
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Affiliation(s)
- William MacAskill
- Respiratory and Exercise Physiology Research Group, School of Health and Wellbeing, University of Southern Queensland, Ipswich, Australia.,Centre for Health Research, Institute for Resilient Regions, University of Southern Queensland, Ipswich, Australia
| | - Ben Hoffman
- Respiratory and Exercise Physiology Research Group, School of Health and Wellbeing, University of Southern Queensland, Ipswich, Australia.,Centre for Health Research, Institute for Resilient Regions, University of Southern Queensland, Ipswich, Australia.,School of Human Movement and Nutrition Sciences, The University of Queensland, Brisbane, Australia
| | - Michael A Johnson
- Exercise and Health Research Group, Sport, Health and Performance Enhancement (SHAPE) Research Centre, School of Science and Technology, Nottingham Trent University, Nottingham, United Kingdom
| | - Graham R Sharpe
- Exercise and Health Research Group, Sport, Health and Performance Enhancement (SHAPE) Research Centre, School of Science and Technology, Nottingham Trent University, Nottingham, United Kingdom
| | - Dean E Mills
- Respiratory and Exercise Physiology Research Group, School of Health and Wellbeing, University of Southern Queensland, Ipswich, Australia.,Centre for Health Research, Institute for Resilient Regions, University of Southern Queensland, Ipswich, Australia
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