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Jozwiak M, Teboul JL. Heart-Lungs interactions: the basics and clinical implications. Ann Intensive Care 2024; 14:122. [PMID: 39133379 PMCID: PMC11319696 DOI: 10.1186/s13613-024-01356-5] [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: 05/02/2024] [Accepted: 07/24/2024] [Indexed: 08/13/2024] Open
Abstract
Heart-lungs interactions are related to the interplay between the cardiovascular and the respiratory system. They result from the respiratory-induced changes in intrathoracic pressure, which are transmitted to the cardiac cavities and to the changes in alveolar pressure, which may impact the lung microvessels. In spontaneously breathing patients, consequences of heart-lungs interactions are during inspiration an increase in right ventricular preload and afterload, a decrease in left ventricular preload and an increase in left ventricular afterload. In mechanically ventilated patients, consequences of heart-lungs interactions are during mechanical insufflation a decrease in right ventricular preload, an increase in right ventricular afterload, an increase in left ventricular preload and a decrease in left ventricular afterload. Physiologically and during normal breathing, heart-lungs interactions do not lead to significant hemodynamic consequences. Nevertheless, in some clinical settings such as acute exacerbation of chronic obstructive pulmonary disease, acute left heart failure or acute respiratory distress syndrome, heart-lungs interactions may lead to significant hemodynamic consequences. These are linked to complex pathophysiological mechanisms, including a marked inspiratory negativity of intrathoracic pressure, a marked inspiratory increase in transpulmonary pressure and an increase in intra-abdominal pressure. The most recent application of heart-lungs interactions is the prediction of fluid responsiveness in mechanically ventilated patients. The first test to be developed using heart-lungs interactions was the respiratory variation of pulse pressure. Subsequently, many other dynamic fluid responsiveness tests using heart-lungs interactions have been developed, such as the respiratory variations of pulse contour-based stroke volume or the respiratory variations of the inferior or superior vena cava diameters. All these tests share the same limitations, the most frequent being low tidal volume ventilation, persistent spontaneous breathing activity and cardiac arrhythmia. Nevertheless, when their main limitations are properly addressed, all these tests can help intensivists in the decision-making process regarding fluid administration and fluid removal in critically ill patients.
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Affiliation(s)
- Mathieu Jozwiak
- Service de Médecine Intensive Réanimation, CHU de Nice Hôpital Archet 1, 151 Route Saint Antoine de Ginestière, 06200, Nice, France.
- UR2CA, Unité de Recherche Clinique Côte d'Azur, Université Côte d'Azur, 06200, Nice, France.
| | - Jean-Louis Teboul
- Faculté de Médecine Paris-Saclay, Université Paris-Saclay, 94270, Le Kremlin-Bicêtre, France
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2
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Groenland CNL, Blijleven MA, Ramzi I, Dubois EA, Heunks L, Endeman H, Wils EJ, Baggen VJM. The Value of Ischemic Cardiac Biomarkers to Predict Spontaneous Breathing Trial or Extubation Failure: A Systematic Review. J Clin Med 2024; 13:3242. [PMID: 38892952 PMCID: PMC11173145 DOI: 10.3390/jcm13113242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Revised: 05/24/2024] [Accepted: 05/28/2024] [Indexed: 06/21/2024] Open
Abstract
Background: It is unclear whether other cardiac biomarkers than NT-proBNP can be useful in the risk stratification of patients weaning from mechanical ventilation. The aim of this study is to summarize the role of ischemic cardiac biomarkers in predicting spontaneous breathing trial (SBT) or extubation failure. Methods: We systematically searched Embase, MEDLINE, Web of Science, and Cochrane Central for studies published before January 2024 that reported the association between ischemic cardiac biomarkers and SBT or extubation failure. Data were extracted using a standardized form and methodological assessment was performed using the QUIPS tool. Results: Seven observational studies investigating four ischemic cardiac biomarkers (Troponin-T, Troponin-I, CK-MB, Myoglobin) were included. One study reported a higher peak Troponin-I in patients with extubation failure compared to extubation success (50 ng/L [IQR, 20-215] versus 30 ng/L [IQR, 10-86], p = 0.01). A second study found that Troponin-I measured before the SBT was higher in patients with SBT failure in comparison to patients with SBT success (100 ± 80 ng/L versus 70 ± 130 ng/L, p = 0.03). A third study reported a higher CK-MB measured at the end of the SBT in patients with weaning failure (SBT or extubation failure) in comparison to weaning success (8.77 ± 20.5 ng/mL versus 1.52 ± 1.42 ng/mL, p = 0.047). Troponin-T and Myoglobin as well as Troponin-I and CK-MB measured at other time points were not found to be related to SBT or extubation failure. However, most studies were underpowered and with high risk of bias. Conclusions: The association with SBT or extubation failure is limited for Troponin-I and CK-MB and appears absent for Troponin-T and Myoglobin, but available studies are hampered by significant methodological drawbacks. To more definitively determine the role of ischemic cardiac biomarkers, future studies should prioritize larger sample sizes, including patients at risk of cardiac disease, using stringent SBTs and structured timing of laboratory measurements before and after SBT.
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Affiliation(s)
- Carline N. L. Groenland
- Department of Intensive Care, Erasmus MC, 3015 GD Rotterdam, The Netherlands; (M.A.B.); (I.R.); (E.A.D.); (L.H.); (H.E.); (V.J.M.B.)
| | - Maud A. Blijleven
- Department of Intensive Care, Erasmus MC, 3015 GD Rotterdam, The Netherlands; (M.A.B.); (I.R.); (E.A.D.); (L.H.); (H.E.); (V.J.M.B.)
| | - Imane Ramzi
- Department of Intensive Care, Erasmus MC, 3015 GD Rotterdam, The Netherlands; (M.A.B.); (I.R.); (E.A.D.); (L.H.); (H.E.); (V.J.M.B.)
| | - Eric A. Dubois
- Department of Intensive Care, Erasmus MC, 3015 GD Rotterdam, The Netherlands; (M.A.B.); (I.R.); (E.A.D.); (L.H.); (H.E.); (V.J.M.B.)
- Department of Cardiology, Thorax Center, Cardiovascular Institute, Erasmus MC, 3015 GD Rotterdam, The Netherlands
| | - Leo Heunks
- Department of Intensive Care, Erasmus MC, 3015 GD Rotterdam, The Netherlands; (M.A.B.); (I.R.); (E.A.D.); (L.H.); (H.E.); (V.J.M.B.)
- Department of Intensive Care, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands
| | - Henrik Endeman
- Department of Intensive Care, Erasmus MC, 3015 GD Rotterdam, The Netherlands; (M.A.B.); (I.R.); (E.A.D.); (L.H.); (H.E.); (V.J.M.B.)
| | - Evert-Jan Wils
- Department of Intensive Care, Franciscus Gasthuis & Vlietland Ziekenhuis, 3045 PM Rotterdam, The Netherlands;
| | - Vivan J. M. Baggen
- Department of Intensive Care, Erasmus MC, 3015 GD Rotterdam, The Netherlands; (M.A.B.); (I.R.); (E.A.D.); (L.H.); (H.E.); (V.J.M.B.)
- Department of Cardiology, Thorax Center, Cardiovascular Institute, Erasmus MC, 3015 GD Rotterdam, The Netherlands
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Song J, Luo Q, Lai X, Hu W, Yu Y, Wang M, Yang K, Chen G, Chen W, Li Q, Hu C, Gong S. Combined cardiac, lung, and diaphragm ultrasound for predicting weaning failure during spontaneous breathing trial. Ann Intensive Care 2024; 14:60. [PMID: 38641687 PMCID: PMC11031537 DOI: 10.1186/s13613-024-01294-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Accepted: 04/10/2024] [Indexed: 04/21/2024] Open
Abstract
BACKGROUND Weaning from invasive mechanical ventilation (MV) is a complex and challenging process that involves multiple pathophysiological mechanisms. A combined ultrasound evaluation of the heart, lungs, and diaphragm during the weaning phase can help to identify risk factors and underlying mechanisms for weaning failure. This study aimed to investigate the accuracy of lung ultrasound (LUS), transthoracic echocardiography (TTE), and diaphragm ultrasound for predicting weaning failure in critically ill patients. METHODS Patients undergoing invasive MV for > 48 h and who were readied for their first spontaneous breathing trial (SBT) were studied. Patients were scheduled for a 2-h SBT using low-level pressure support ventilation. LUS and TTE were performed prospectively before and 30 min after starting the SBT, and diaphragm ultrasound was only performed 30 min after starting the SBT. Weaning failure was defined as failure of SBT, re-intubation, or non-invasive ventilation within 48 h. RESULTS Fifty-one patients were included, of whom 15 experienced weaning failure. During the SBT, the global, anterior, and antero-lateral LUS scores were higher in the failed group than in the successful group. Receiver operating characteristic curve analysis showed that the areas under the curves for diaphragm thickening fraction (DTF) and global and antero-lateral LUS scores during the SBT to predict weaning failure were 0.678, 0.719, and 0.721, respectively. There was no correlation between the LUS scores and the average E/e' ratio during the SBT. Multivariate analysis identified antero-lateral LUS score > 7 and DTF < 31% during the SBT as independent predictors of weaning failure. CONCLUSION LUS and diaphragm ultrasound can help to predict weaning failure in patients undergoing an SBT with low-level pressure support. An antero-lateral LUS score > 7 and DTF < 31% during the SBT were associated with weaning failure.
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Affiliation(s)
- Jia Song
- Department of Critical Care Medicine, Zhejiang Hospital, No. 12, Lingyin Road, Xihu District, Hangzhou, Zhejiang, 310013, China
| | - Qiancheng Luo
- Department of Critical Care Medicine, Shanghai Pudong New Area Gongli Hospital, No. 219, Miaopu Road, Pudong New Area, Shanghai, 200135, China
| | - Xinle Lai
- Department of Critical Care Medicine, Zhejiang Hospital, No. 12, Lingyin Road, Xihu District, Hangzhou, Zhejiang, 310013, China
| | - Weihang Hu
- Department of Critical Care Medicine, Zhejiang Hospital, No. 12, Lingyin Road, Xihu District, Hangzhou, Zhejiang, 310013, China
| | - Yihua Yu
- Department of Critical Care Medicine, Zhejiang Hospital, No. 12, Lingyin Road, Xihu District, Hangzhou, Zhejiang, 310013, China
| | - Minjia Wang
- Department of Critical Care Medicine, Zhejiang Hospital, No. 12, Lingyin Road, Xihu District, Hangzhou, Zhejiang, 310013, China
| | - Kai Yang
- The 2nd Clinical Medical College, Zhejiang Chinese Medical University, No. 548, Binwen Road, Binjiang District, Hangzhou, 310053, China
| | - Gongze Chen
- The 2nd Clinical Medical College, Zhejiang Chinese Medical University, No. 548, Binwen Road, Binjiang District, Hangzhou, 310053, China
| | - Wenwei Chen
- The 2nd Clinical Medical College, Zhejiang Chinese Medical University, No. 548, Binwen Road, Binjiang District, Hangzhou, 310053, China
| | - Qian Li
- The 2nd Clinical Medical College, Zhejiang Chinese Medical University, No. 548, Binwen Road, Binjiang District, Hangzhou, 310053, China
| | - Caibao Hu
- Department of Critical Care Medicine, Zhejiang Hospital, No. 12, Lingyin Road, Xihu District, Hangzhou, Zhejiang, 310013, China.
| | - Shijin Gong
- Department of Critical Care Medicine, Zhejiang Hospital, No. 12, Lingyin Road, Xihu District, Hangzhou, Zhejiang, 310013, China.
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Al-Husinat L, Jouryyeh B, Rawashdeh A, Robba C, Silva PL, Rocco PRM, Battaglini D. The Role of Ultrasonography in the Process of Weaning from Mechanical Ventilation in Critically Ill Patients. Diagnostics (Basel) 2024; 14:398. [PMID: 38396437 PMCID: PMC10888003 DOI: 10.3390/diagnostics14040398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2023] [Revised: 01/22/2024] [Accepted: 02/10/2024] [Indexed: 02/25/2024] Open
Abstract
Weaning patients from mechanical ventilation (MV) is a complex process that may result in either success or failure. The use of ultrasound at the bedside to assess organs may help to identify the underlying mechanisms that could lead to weaning failure and enable proactive measures to minimize extubation failure. Moreover, ultrasound could be used to accurately identify pulmonary diseases, which may be responsive to respiratory physiotherapy, as well as monitor the effectiveness of physiotherapists' interventions. This article provides a comprehensive review of the role of ultrasonography during the weaning process in critically ill patients.
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Affiliation(s)
- Lou’i Al-Husinat
- Department of Clinical Medical Sciences, Faculty of Medicine, Yarmouk University, Irbid 21163, Jordan;
| | - Basil Jouryyeh
- Faculty of Medicine, Yarmouk University, Irbid 21163, Jordan; (B.J.); (A.R.)
| | - Ahlam Rawashdeh
- Faculty of Medicine, Yarmouk University, Irbid 21163, Jordan; (B.J.); (A.R.)
| | - Chiara Robba
- Anesthesia and Intensive Care, IRCCS Ospedale Policlinico San Martino, 16132 Genova, Italy;
- Department of Surgical Sciences and Integrated Diagnostics (DISC), University of Genova, 16132 Genova, Italy
| | - Pedro Leme Silva
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Biophysics Institute, Federal University of Rio de Janeiro, Rio de Janeiro 21941, Brazil; (P.L.S.); (P.R.M.R.)
| | - Patricia Rieken Macedo Rocco
- Laboratory of Pulmonary Investigation, Carlos Chagas Filho Biophysics Institute, Federal University of Rio de Janeiro, Rio de Janeiro 21941, Brazil; (P.L.S.); (P.R.M.R.)
| | - Denise Battaglini
- Anesthesia and Intensive Care, IRCCS Ospedale Policlinico San Martino, 16132 Genova, Italy;
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5
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Vignon P. Cardiopulmonary interactions during ventilator weaning. Front Physiol 2023; 14:1275100. [PMID: 37745230 PMCID: PMC10512459 DOI: 10.3389/fphys.2023.1275100] [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: 08/09/2023] [Accepted: 08/28/2023] [Indexed: 09/26/2023] Open
Abstract
Weaning a critically-ill patient from the ventilator is a crucial step in global management. This manuscript details physiological changes induced by altered heart-lung interactions during the weaning process, illustrates the main mechanisms which could lead to weaning failure of cardiac origin, and discuss a tailored management based on the monitoring of changes in central hemodynamics during weaning. The transition from positive-pressure ventilation to spontaneous breathing results in abrupt hemodynamic and metabolic changes secondary to rapidly modified heart-lung interactions, sudden changes in cardiac loading conditions, and increased oxygen demand. These modifications may elicit an excessive burden on both the respiratory and cardiovascular systems, result in a rapid and marked increase of left ventricular filling pressure, and ultimately result in a weaning-induced pulmonary oedema (WIPO). The T-piece trial induces the greatest burden on respiratory and cardiocirculatory function when compared to spontaneous breathing trial using pressure support ventilation with positive or zero end-expiratory pressure. Since LV overload is the mainstay of WIPO, positive fluid balance and SBT-induced acute hypertension are the most frequently reported mechanisms of weaning failure of cardiac origin. Although the diagnosis of WIPO historically relied on an abrupt elevation of pulmonary artery occlusion pressure measured during right heart catheterization, it is nowadays commonly documented by echocardiography Doppler. This non-invasive approach is best suited for identifying high-risk patients, depicting the origin of WIPO, and tailoring individual management. Whether this strategy increases the success rate of weaning needs to be evaluated in a population at high risk of weaning failure of cardiac origin.
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Affiliation(s)
- Philippe Vignon
- Medical-surgical ICU and Inserm CIC 1435, Dupuytren University Hospital, Limoges, France
- Faculty of Medicine, University of Limoges, Limoges, France
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6
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Ghamari AA, Amini K, Daei Sorkhabi A, Sarkesh A, Saghaleini SH, Asghari R, Rezayi M, Mahmoodpoor A. Diagnostic value of an increase in central venous pressure during SBT for prediction of weaning failure in mechanically ventilated patients: A cross-sectional study. Health Sci Rep 2023; 6:e1204. [PMID: 37064307 PMCID: PMC10102306 DOI: 10.1002/hsr2.1204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 03/12/2023] [Accepted: 03/24/2023] [Indexed: 04/18/2023] Open
Abstract
Background Timely and successful extubation is an essential step forward in clinical practice to minimize complications of mechanical ventilation and unsuccessful weaning processes. Thus, research into predictive factors of weaning outcome to optimize spontaneous breathing trial (SBT) precision before extubation is critical in intensive care practices. In this study, we aimed to investigate the predictive factors of the weaning outcome before and during SBT in mechanically ventilated patients. Methods In this cross-sectional study, 159 mechanically ventilated patients who were eligible for SBT were enrolled. Of these patients, 140 had successful extubation, whereas the remainder failed. Each patient's PaCO2 and PaO2 levels, respiratory rate (RR), SpO2, mean arterial pressure (MAP), heart rate (HR), and central venous pressure (CVP) values at the start of SBT, 3 min later, and at the end of SBT were measured. These values, along with the patients' clinical characteristics, were then investigated to determine if there was any correlation between these variables and the weaning outcome. Results Our analysis revealed that increase in CVP, independent of hemoglobin (Hb) concentration, PaO2, SpO2, duration of mechanical ventilation (MV), length of intensive care unit (ICU) stay, and SBT process, as well as underlying disease, was positively correlated with extubation/weaning failure. While age, gender, vital signs (MAP, RR, and HR), sequential organ failure assessment (SOFA), and acute physiology and chronic health evaluation (APACHE) scores had no significant correlation with patients' extubation outcomes. Conclusion According to our findings, integrating CVP assessment into SBT besides routine indices measurement and monitoring can be considered for the prediction of weaning outcome in critically ill mechanically ventilated patients.
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Affiliation(s)
- Ali Akbar Ghamari
- Intensive Care Unit, Imam Reza HospitalTabriz University of Medical SciencesTabrizIran
| | - Keivan Amini
- Student Research CommitteeTabriz University of Medical SciencesTabrizIran
| | - Amin Daei Sorkhabi
- Student Research CommitteeTabriz University of Medical SciencesTabrizIran
| | - Aila Sarkesh
- Student Research CommitteeTabriz University of Medical SciencesTabrizIran
| | - Seyed Hadi Saghaleini
- Intensive Care Unit, Imam Reza HospitalTabriz University of Medical SciencesTabrizIran
| | - Roghayeh Asghari
- Intensive Care Unit, Imam Reza HospitalTabriz University of Medical SciencesTabrizIran
| | - Mansour Rezayi
- Intensive Care Unit, Imam Reza HospitalTabriz University of Medical SciencesTabrizIran
| | - Ata Mahmoodpoor
- Intensive Care Unit, Imam Reza HospitalTabriz University of Medical SciencesTabrizIran
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Clinical presentation and outcomes of acute heart failure in the critically ill patient: A prospective, observational, multicentre study. MEDICINA INTENSIVA (ENGLISH EDITION) 2022; 47:221-231. [PMID: 36272910 DOI: 10.1016/j.medine.2022.03.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 03/03/2022] [Indexed: 11/06/2022]
Abstract
AIMS To assess the clinical profile and factors associated with 30-day mortality in patients with acute heart failure (AHF) admitted to the intensive care unit (ICU). DESIGN Prospective, multicentre cohort study. SCOPE Thirty-two Spanish ICUs. PATIENTS Adult patients admitted to the ICU between April and June 2017. INTERVENTION Patients were classified into three groups according to AHF status: without AHF (no AHF); AHF as the primary reason for ICU admission (primary AHF); and AHF developed during the ICU stay (secondary AHF). MAIN VARIABLES OF INTEREST Incidence of AHF and 30-day mortality. RESULTS A total of 4330 patients were included. Of these, 627 patients (14.5%) had primary (n=319; 7.4%) or secondary (n=308; 7.1%) AHF. Among the main precipitating factors, fluid overload was more common in the secondary AHF group than in the primary group (12.9% vs 23.4%, p<0.001). Patients with AHF had a higher risk of 30-day mortality than those without AHF (OR 2.45; 95% CI: 1.93-3.11). APACHE II, cardiogenic shock, left ventricular ejection fraction, early inotropic therapy, and diagnostic delay were independently associated with 30-day mortality in AHF patients. Diagnostic delay was associated with a significant increase in 30-day mortality in the secondary group (OR 6.82; 95% CI 3.31-14.04). CONCLUSIONS The incidence of primary and secondary AHF was similar in this cohort of ICU patients. The risk of developing AHF in ICU patients can be reduced by avoiding modifiable precipitating factors, particularly fluid overload. Diagnostic delay was associated with significantly higher mortality rates in patients with secondary AHF.
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8
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Akella P, Voigt LP, Chawla S. To Wean or Not to Wean: A Practical Patient Focused Guide to Ventilator Weaning. J Intensive Care Med 2022; 37:1417-1425. [PMID: 35815895 DOI: 10.1177/08850666221095436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Since the inception of critical care medicine and artificial ventilation, literature and research on weaning has transformed daily patient care in intensive care units (ICU). As our knowledge of mechanical ventilation (MV) improved, so did the need to study patient-ventilator interactions and weaning predictors. Randomized trials have evaluated the use of protocol-based weaning (vs. usual care) to study the duration of MV in ICUs, different techniques to conduct spontaneous breathing trials (SBT), and strategies to eventually extubate a patient whose initial SBT failed. Despite considerable milestones in the management of multiple diseases contributing to reversible respiratory failure, in the application of early rehabilitative interventions to preserve muscle integrity, and in ventilator technology that mitigates against ventilator injury and dyssynchrony, major barriers to successful liberation from MV persist. This review provides a broad encompassing view of weaning classification, causes of weaning failure, and evidence behind weaning predictors and weaning modes.
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Affiliation(s)
- Padmastuti Akella
- Department of Anesthesiology & Critical Care Medicine, 5803Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Louis P Voigt
- Department of Anesthesiology & Critical Care Medicine, 5803Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Sanjay Chawla
- Department of Anesthesiology & Critical Care Medicine, 5803Memorial Sloan Kettering Cancer Center, New York, NY, USA
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Zapata L, Guía C, Gómez R, García-Paredes T, Colinas L, Portugal-Rodriguez E, Rodado I, Leache I, Fernández-Ferreira A, Hermosilla-Semikina I, Roche-Campo F. Clinical presentation and outcomes of acute heart failure in the critically ill patient: A prospective, observational, multicentre study. Med Intensiva 2022. [DOI: 10.1016/j.medin.2022.03.009] [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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10
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Prolonged Mechanical Ventilation: Outcomes and Management. J Clin Med 2022; 11:jcm11092451. [PMID: 35566577 PMCID: PMC9103623 DOI: 10.3390/jcm11092451] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 04/23/2022] [Accepted: 04/24/2022] [Indexed: 02/01/2023] Open
Abstract
The number of patients requiring prolonged mechanical ventilation (PMV) is increasing worldwide, placing a burden on healthcare systems. Therefore, investigating the pathophysiology, risk factors, and treatment for PMV is crucial. Various underlying comorbidities have been associated with PMV. The pathophysiology of PMV includes the presence of an abnormal respiratory drive or ventilator-induced diaphragm dysfunction. Numerous studies have demonstrated that ventilator-induced diaphragm dysfunction is related to increases in in-hospital deaths, nosocomial pneumonia, oxidative stress, lung tissue hypoxia, ventilator dependence, and costs. Thus far, the pathophysiologic evidence for PMV has been derived from clinical human studies and experimental studies in animals. Moreover, recent studies have demonstrated the outcome benefits of pharmacological agents and rehabilitative programs for patients requiring PMV. However, methodological limitations affected these studies. Controlled prospective studies with an adequate number of participants are necessary to provide evidence of the mechanism, prognosis, and treatment of PMV. The great epidemiologic impact of PMV and the potential development of treatment make this a key research field.
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11
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Lung- and Diaphragm-Protective Ventilation by Titrating Inspiratory Support to Diaphragm Effort: A Randomized Clinical Trial. Crit Care Med 2022; 50:192-203. [PMID: 35100192 PMCID: PMC8797006 DOI: 10.1097/ccm.0000000000005395] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
OBJECTIVES Lung- and diaphragm-protective ventilation is a novel concept that aims to limit the detrimental effects of mechanical ventilation on the diaphragm while remaining within limits of lung-protective ventilation. The premise is that low breathing effort under mechanical ventilation causes diaphragm atrophy, whereas excessive breathing effort induces diaphragm and lung injury. In a proof-of-concept study, we aimed to assess whether titration of inspiratory support based on diaphragm effort increases the time that patients have effort in a predefined "diaphragm-protective" range, without compromising lung-protective ventilation. DESIGN Randomized clinical trial. SETTING Mixed medical-surgical ICU in a tertiary academic hospital in the Netherlands. PATIENTS Patients (n = 40) with respiratory failure ventilated in a partially-supported mode. INTERVENTIONS In the intervention group, inspiratory support was titrated hourly to obtain transdiaphragmatic pressure swings in the predefined "diaphragm-protective" range (3-12 cm H2O). The control group received standard-of-care. MEASUREMENTS AND MAIN RESULTS Transdiaphragmatic pressure, transpulmonary pressure, and tidal volume were monitored continuously for 24 hours in both groups. In the intervention group, more breaths were within "diaphragm-protective" range compared with the control group (median 81%; interquartile range [64-86%] vs 35% [16-60%], respectively; p < 0.001). Dynamic transpulmonary pressures (20.5 ± 7.1 vs 18.5 ± 7.0 cm H2O; p = 0.321) and tidal volumes (7.56 ± 1.47 vs 7.54 ± 1.22 mL/kg; p = 0.961) were not different in the intervention and control group, respectively. CONCLUSIONS Titration of inspiratory support based on patient breathing effort greatly increased the time that patients had diaphragm effort in the predefined "diaphragm-protective" range without compromising tidal volumes and transpulmonary pressures. This study provides a strong rationale for further studies powered on patient-centered outcomes.
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12
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Santos PAD, Ribas A, Quadros TCC, Blattner CN, Boniatti MM. Postextubation fluid balance is associated with extubation failure: a cohort study. Rev Bras Ter Intensiva 2021; 33:422-427. [PMID: 35107553 PMCID: PMC8555406 DOI: 10.5935/0103-507x.20210057] [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: 09/02/2020] [Accepted: 02/02/2021] [Indexed: 11/25/2022] Open
Abstract
Objetivo Avaliar se há associação entre o balanço
hídrico nas 48 horas após a extubação e a falha
da extubação. Métodos Este é um estudo de coorte prospectiva que incluiu os pacientes
admitidos à unidade de terapia intensiva de um hospital
terciário no sul do Brasil entre março e dezembro de 2019.
Incluíram-se os pacientes que necessitaram de
ventilação mecânica por pelo menos 24 horas e foram
extubados durante o período do estudo. O desfecho primário foi
falha da extubação, considerada como necessidade de reintubar
dentro das primeiras 72 horas após a extubação. O
desfecho secundário foi um desfecho combinado de falha da
extubação ou necessidade de ventilação
não invasiva terapêutica. Resultados Foram incluídos 101 pacientes. Observou-se falha da
extubação em 29 (28,7%) deles. Na análise univariada,
pacientes com balanço hídrico negativo acima de 1L no
período de 48 horas após a extubação tiveram
menor taxa de falha da extubação (12,0%), em
comparação a pacientes com balanço hídrico
negativo nas 48 horas após a extubação menor que 1L
(34,2%; p = 0,033). A duração da ventilação
mecânica e o balanço hídrico negativo nas 48 horas
após a extubação inferior a 1L se associaram com falha
da extubação na análise multivariada quando corrigido
pelo Simplified Acute Physiology Score 3. Quando avaliou-se
o desfecho combinado, apenas o balanço hídrico nas 48 horas
pós-extubação inferior a 1L manteve
associação, quando corrigido pelo Simplified Acute
Physiology Score 3 e duração da
ventilação mecânica. Conclusão O balanço hídrico nas 48 horas após a
extubação se associa com falha da extubação.
São necessários mais estudos para avaliar se evitar um
balanço hídrico positivo nesse período poderia melhorar
os desfechos do desmame.
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Affiliation(s)
- Priscila Albrecht Dos Santos
- Departamento de Terapia Intensiva, Hospital São Lucas, Pontifícia Universidade Católica do Rio Grande do Sul - Porto Alegre (RS), Brasil
| | - Alexandre Ribas
- Departamento de Terapia Intensiva, Hospital São Lucas, Pontifícia Universidade Católica do Rio Grande do Sul - Porto Alegre (RS), Brasil
| | - Thiele Cabral Coelho Quadros
- Departamento de Terapia Intensiva, Hospital São Lucas, Pontifícia Universidade Católica do Rio Grande do Sul - Porto Alegre (RS), Brasil
| | - Clarissa Netto Blattner
- Departamento de Terapia Intensiva, Hospital São Lucas, Pontifícia Universidade Católica do Rio Grande do Sul - Porto Alegre (RS), Brasil
| | - Márcio Manozzo Boniatti
- Departamento de Terapia Intensiva, Hospital de Clínicas de Poto Alegre, Universidade Federal do Rio Grande do Sul - Porto Alegre (RS), Brasil
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13
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Dres M, Estellat C, Baudel JL, Beloncle F, Cousty J, Galbois A, Guérin L, Labbe V, Labro G, Lebut J, Mira JP, Prat G, Quenot JP, Dessap A. Comparison of a preventive or curative strategy of fluid removal on the weaning of mechanical ventilation: a study protocol for a multicentre randomised open-label parallel-group trial. BMJ Open 2021; 11:e048286. [PMID: 34400454 PMCID: PMC8370501 DOI: 10.1136/bmjopen-2020-048286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 07/29/2021] [Indexed: 11/09/2022] Open
Abstract
INTRODUCTION Fluid overload is associated with a poor prognosis in the critically ill patients, especially at the time of weaning from mechanical ventilation as it may promote weaning failure from cardiac origin. Some data suggest that early administration of diuretics would shorten the duration of mechanical ventilation. However, this strategy may expose patients to a higher risk of haemodynamic and metabolic complications. Currently, there is no recommendation for the use of diuretics during weaning and there is an equipoise on the timing of their initiation in this context. METHODS AND ANALYSIS This study is a multicentre randomised controlled trial comparing two strategies of fluid removal during weaning in 13 French intensive care units (ICU). The preventive strategy is initiated systematically when the fluid balance or weight change is positive and the patients have criteria for clinical stability; the curative strategy is initiated only in case of weaning failure documented as of cardiac origin. Four hundred and ten patients will be randomised with a 1:1 ratio. The primary outcome is the duration of weaning from mechanical ventilation, defined as the number of days between randomisation and successful extubation (alive without reintubation nor tracheostomy within the 7 days after extubation) at day 28. Secondary outcomes include daily and cumulated fluid balance, metabolic and haemodynamic complications, ventilator-associated pneumonia, weaning complications, number of ventilator-free days, total duration of mechanical ventilation, the length of stay in ICU and mortality in ICU, in hospital and, at day 28. A subgroup analysis for the primary outcome is planned in patients with kidney injury (Kidney Disease: Improving Global Outcomes class 2 or more) at the time of randomisation. ETHICS AND DISSEMINATION The study has been approved by the ethics committee (Comité de Protection des Personnes Paris 1) and patients will be included after informed consent. The results will be submitted for publication in peer-reviewed journals. TRIAL REGISTRATION NUMBER NCT04050007. PROTOCOL VERSION V.1; 12 March 2019.
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Affiliation(s)
- Martin Dres
- Service de Médecine intensive Réanimation, APHP.Sorbonne Université, Hôpital Pitie Salpêtriere, Paris, France
| | - Candice Estellat
- Département de Santé Publique, APHP.Sorbonne Université, Hôpital Pitie Salpetriere, Paris, Île-de-France, France
| | - Jean-Luc Baudel
- Service de Médecine intensive Réanimation, APHP.Sorbonne Université, Hôpital Saint Antoine, Paris, Île-de-France, France
| | - François Beloncle
- Service de Médecine intensive Réanimation et médedine hyperbare, CHU Angers, Angers, Pays de la Loire, France
| | - Julien Cousty
- Service de Réanimation Polyvalente, CHU de La Réunion Sites Sud Saint-Pierre, Saint-Pierre, Réunion
| | - Arnaud Galbois
- Service de Réanimation polyvalente, Hôpital Claude Galien, Quincy-sous-Senart, France
| | - Laurent Guérin
- Service de Médecine Intensive Réanimation, Centre Hospitalier Universitaire de Bicêtre, Le Kremlin-Bicetre, France
| | - Vincent Labbe
- Service de Réanimation et USC Médico-Chirurgicale, APHP.Sorbonne University, Tenon Hospital, Paris, France
| | - Guylaine Labro
- Service de Réanimation médicale, Centre Hospitalier de Mulhouse, Mulhouse, France
| | - Jordane Lebut
- Service de Réanimation et Surveillance Continue, Groupement Hospitalier Nord Essonne, Longjumeau, Île-de-France, France
| | - Jean-Paul Mira
- Service de Médecine intensive Réanimation, Groupe Hospitalier Paris Centre-Hôpital Cochin, Paris, Île-de-France, France
| | - Gwenael Prat
- Service de Médecine intensive et Réanimation, CHU de Brest, Brest, France
| | | | - Armand Dessap
- Service de Médecine Intensive Réanimation, APHP. Hôpitaux Universitaires Henri Mondor, Creteil, France
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14
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Dres M, Rozenberg E, Morawiec E, Mayaux J, Delemazure J, Similowski T, Demoule A. Diaphragm dysfunction, lung aeration loss and weaning-induced pulmonary oedema in difficult-to-wean patients. Ann Intensive Care 2021; 11:99. [PMID: 34181105 PMCID: PMC8237539 DOI: 10.1186/s13613-021-00886-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Accepted: 06/09/2021] [Indexed: 11/16/2022] Open
Abstract
Background Diaphragm dysfunction and weaning-induced pulmonary oedema are commonly involved during weaning failure, but their physiological interactions have been poorly reported. Our hypothesis was that diaphragm dysfunction is not particularly associated with weaning-induced pulmonary oedema. Methods It was a single-centre and physiological study conducted in patients who had failed a first spontaneous breathing trial and who underwent a second trial. The diaphragm function was evaluated by measuring the tracheal pressure generated in response to a bilateral magnetic phrenic nerves stimulations. Weaning-induced pulmonary oedema was diagnosed in case of failure of the spontaneous breathing trial if patients exhibited signs of plasma concentration or echocardiographic diagnosis of pulmonary artery occlusion pressure elevation. Results Fifty-three patients were included and 31/53 (58%) failed the spontaneous breathing trial, including 24/31 (77%) patients with weaning-induced pulmonary oedema. Diaphragm dysfunction was present in 33/53 (62%) patients. Diaphragm dysfunction or weaning-induced pulmonary oedema were present in 26/31 (84%) of the patients who failed the spontaneous breathing trial. Weaning-induced pulmonary oedema occurred in 20/33 (61%) patients with a diaphragm dysfunction and in 4/20 (20%) patients without (p = 0.005). Conclusion Weaning-induced pulmonary oedema was three times more frequent in case of diaphragm dysfunction. Even in case of diaphragm dysfunction, physicians might be encouraged to investigate the presence of weaning-induced pulmonary oedema during weaning failure.
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Affiliation(s)
- Martin Dres
- Service de Pneumologie, Médecine intensive - Réanimation (Département "R3S"), AP-HP. Sorbonne Université, Hôpital Pitié-Salpêtrière, 75013, Paris, France. .,Sorbonne Université, INSERM, UMRS1158 Neurophysiologie Respiratoire Expérimentale et Clinique, Paris, France.
| | - Emmanuel Rozenberg
- Service de Pneumologie, Médecine intensive - Réanimation (Département "R3S"), AP-HP. Sorbonne Université, Hôpital Pitié-Salpêtrière, 75013, Paris, France
| | - Elise Morawiec
- Service de Pneumologie, Médecine intensive - Réanimation (Département "R3S"), AP-HP. Sorbonne Université, Hôpital Pitié-Salpêtrière, 75013, Paris, France
| | - Julien Mayaux
- Service de Pneumologie, Médecine intensive - Réanimation (Département "R3S"), AP-HP. Sorbonne Université, Hôpital Pitié-Salpêtrière, 75013, Paris, France
| | - Julie Delemazure
- Service de Pneumologie, Médecine intensive - Réanimation (Département "R3S"), AP-HP. Sorbonne Université, Hôpital Pitié-Salpêtrière, 75013, Paris, France
| | - Thomas Similowski
- Service de Pneumologie, Médecine intensive - Réanimation (Département "R3S"), AP-HP. Sorbonne Université, Hôpital Pitié-Salpêtrière, 75013, Paris, France.,Sorbonne Université, INSERM, UMRS1158 Neurophysiologie Respiratoire Expérimentale et Clinique, Paris, France
| | - Alexandre Demoule
- Service de Pneumologie, Médecine intensive - Réanimation (Département "R3S"), AP-HP. Sorbonne Université, Hôpital Pitié-Salpêtrière, 75013, Paris, France.,Sorbonne Université, INSERM, UMRS1158 Neurophysiologie Respiratoire Expérimentale et Clinique, Paris, France
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15
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Bagate F, Bedet A, Tomberli F, Boissier F, Razazi K, de Prost N, Carteaux G, Mekontso Dessap A. Critical illness-related corticosteroid insufficiency during difficult weaning from mechanical ventilation. Ann Intensive Care 2021; 11:65. [PMID: 33900478 PMCID: PMC8072727 DOI: 10.1186/s13613-021-00852-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Accepted: 04/10/2021] [Indexed: 12/19/2022] Open
Abstract
Background Critical illness-related corticosteroid insufficiency (CIRCI) is common during critical illness and is usually associated with poor outcomes, as prolonged duration of mechanical ventilation (MV) and higher mortality. CIRCI may alter cardiac and vascular functions. Weaning-induced pulmonary oedema (WiPO) is a major mechanism of weaning failure. The aim of this study was to evaluate the role of CIRCI in patients with difficult ventilator weaning and its possible relation with WiPO. Methods This is a prospective study conducted in the intensive care of a university hospital in France. Patients under MV for more than 24 h, meeting weaning criteria and having failed the first spontaneous breathing trial (SBT) underwent a corticotropin stimulation test, with assessment of total blood cortisol levels immediately before (T0) 0.25 mg iv of tetracosactrin and 30 and 60 min afterward. Δmax was defined as the difference between the maximal value after the test and T0. CIRCI was defined as T0 < 10 μg/dL (276 nmol/L) and/or Δmax < 9 μg/dL (248 nmol/L) and inadequate adrenal reserve as Δmax < 9 μg/dL. Biomarkers (natriuretic peptide and protidemia) sampling and echocardiograms were performed during the second SBT and were used to diagnose WiPO, which was defined according to two definitions (one liberal and one conservative) derived from recent publications on the topic. Successful extubation was defined as patient alive without reintubation 7 days after extubation. A competing risk analysis was used to assess extubation failure and mortality. Results Seventy-six consecutive patients (63 ± 14 years; 49 men) with difficult weaning were enrolled. CIRCI and inadequate adrenal reserve occurred in 25 (33%) and 17 (22%) patients, respectively. The probability of successful extubation was significantly decreased in patients with CIRCI or inadequate adrenal reserve, as compared to their counterparts, and this association persisted after adjustment on severity (SOFA score at first SBT). WiPO occurred in 44 (58%) and 8 (11%) patients, according to the liberal and conservative definition, respectively. WiPO was not associated with CIRCI nor with inadequate adrenal reserve. Conclusion CIRCI was common during difficult weaning and was associated with its prolongation. We did not find a significant association between CIRCI and WiPO. Supplementary Information The online version contains supplementary material available at 10.1186/s13613-021-00852-2.
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Affiliation(s)
- François Bagate
- AP-HP, DHU A-TVB, Service de Médecine Intensive Réanimation, Centre Hospitalo-Universitaire Henri Mondor, 51, avenue du Mal de Lattre de Tassigny, 94010, Créteil Cedex, France. .,Groupe de Recherche Clinique CARMAS, Faculté de Médecine, Université Paris Est Créteil, 94010, Créteil, France.
| | - Alexandre Bedet
- AP-HP, DHU A-TVB, Service de Médecine Intensive Réanimation, Centre Hospitalo-Universitaire Henri Mondor, 51, avenue du Mal de Lattre de Tassigny, 94010, Créteil Cedex, France.,Groupe de Recherche Clinique CARMAS, Faculté de Médecine, Université Paris Est Créteil, 94010, Créteil, France
| | - Françoise Tomberli
- AP-HP, DHU A-TVB, Service de Médecine Intensive Réanimation, Centre Hospitalo-Universitaire Henri Mondor, 51, avenue du Mal de Lattre de Tassigny, 94010, Créteil Cedex, France.,Groupe de Recherche Clinique CARMAS, Faculté de Médecine, Université Paris Est Créteil, 94010, Créteil, France
| | - Florence Boissier
- AP-HP, DHU A-TVB, Service de Médecine Intensive Réanimation, Centre Hospitalo-Universitaire Henri Mondor, 51, avenue du Mal de Lattre de Tassigny, 94010, Créteil Cedex, France.,Service de Réanimation Médicale, CHU de Poitiers, Poitiers, France.,INSERM CIC 1402 (ALIVE Group), Université de Poitiers, Poitiers, France
| | - Keyvan Razazi
- AP-HP, DHU A-TVB, Service de Médecine Intensive Réanimation, Centre Hospitalo-Universitaire Henri Mondor, 51, avenue du Mal de Lattre de Tassigny, 94010, Créteil Cedex, France.,Groupe de Recherche Clinique CARMAS, Faculté de Médecine, Université Paris Est Créteil, 94010, Créteil, France
| | - Nicolas de Prost
- AP-HP, DHU A-TVB, Service de Médecine Intensive Réanimation, Centre Hospitalo-Universitaire Henri Mondor, 51, avenue du Mal de Lattre de Tassigny, 94010, Créteil Cedex, France.,Groupe de Recherche Clinique CARMAS, Faculté de Médecine, Université Paris Est Créteil, 94010, Créteil, France.,INSERM U955, Institut Mondor de Recherche Biomédicale, 94010, Créteil, France
| | - Guillaume Carteaux
- AP-HP, DHU A-TVB, Service de Médecine Intensive Réanimation, Centre Hospitalo-Universitaire Henri Mondor, 51, avenue du Mal de Lattre de Tassigny, 94010, Créteil Cedex, France.,Groupe de Recherche Clinique CARMAS, Faculté de Médecine, Université Paris Est Créteil, 94010, Créteil, France.,INSERM U955, Institut Mondor de Recherche Biomédicale, 94010, Créteil, France
| | - Armand Mekontso Dessap
- AP-HP, DHU A-TVB, Service de Médecine Intensive Réanimation, Centre Hospitalo-Universitaire Henri Mondor, 51, avenue du Mal de Lattre de Tassigny, 94010, Créteil Cedex, France.,Groupe de Recherche Clinique CARMAS, Faculté de Médecine, Université Paris Est Créteil, 94010, Créteil, France.,INSERM U955, Institut Mondor de Recherche Biomédicale, 94010, Créteil, France
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16
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Liu J, Wang CJ, Ran JH, Lin SH, Deng D, Ma Y, Xu F. The predictive value of brain natriuretic peptide or N-terminal pro-brain natriuretic peptide for weaning outcome in mechanical ventilation patients: Evidence from SROC. J Renin Angiotensin Aldosterone Syst 2021; 22:1470320321999497. [PMID: 33678076 PMCID: PMC8880489 DOI: 10.1177/1470320321999497] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
OBJECTIVE Mechanical ventilation is an important treatment for critically ill patients. Physicians generally perform a spontaneous breathing trial (SBT) to determine whether the patients can be weaned from mechanical ventilation, but almost 17% of the patients who pass the SBT still require respiratory support. Cardiac dysfunction is an important cause of weaning failure. The use of brain natriuretic peptide or N-terminal pro-BNP is a simple method to assess cardiac function. We performed a systematic review of investigations of brain natriuretic peptide or N-terminal pro-BNP as predictors of weaning from mechanical ventilation. DATA SOURCES PubMed (1950 to December 2020), Cochrane, and Embase (1974 to December 2020), and some Chinese databases for additional articles (China Biology Medicine (CBM), China Science and Technology Journal Database (CSTJ), and Wanfang Data and China National Knowledge Infrastructure (CNKI)). STUDY SELECTION We systematically searched observation studies investigating the predictive value of brain natriuretic peptide or N-terminal pro-brain natriuretic peptide in weaning outcome of patients with mechanical ventilation. DATA EXTRACTION Two independent reviewers extracted data. The differences are resolved through consultation. DATA SYNTHESIS We included 18 articles with 1416 patients and extracted six index tests with pooled sensitivity and specificity for each index test. For the BNP change rate predicting weaning success, the pooled sensitivity was 89% (83%-94%) and the pooled specificity was 82% (72%-89%) with the highest pooled AUC of 0.9511. CONCLUSIONS The brain natriuretic peptide change rate is a reliable predictor of weaning outcome from mechanical ventilation.
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Affiliation(s)
- Jian Liu
- Department of Intensive Care Unit, Youyang Hospital, A Branch of The First Affiliated Hospital of Chongqing Medical University, Chongqing, P.R. China.,Department of Critical Care Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, P.R. China
| | - Chuan-Jiang Wang
- Department of Critical Care Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, P.R. China
| | - Jun-Huai Ran
- Department of Intensive Care Unit, Youyang Hospital, A Branch of The First Affiliated Hospital of Chongqing Medical University, Chongqing, P.R. China
| | - Shi-Hui Lin
- Department of Critical Care Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, P.R. China
| | - Dan Deng
- School of Public Health and Management, Chongqing Medical University, Chongqing, China
| | - Yu Ma
- Department of Critical Care Medicine, Chongqing Emergency Medical Center, Chongqing, China
| | - Fang Xu
- Department of Critical Care Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, P.R. China
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17
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Lassola S, Miori S, Sanna A, Cucino A, Magnoni S, Umbrello M. Central venous pressure swing outperforms diaphragm ultrasound as a measure of inspiratory effort during pressure support ventilation in COVID-19 patients. J Clin Monit Comput 2021; 36:461-471. [PMID: 33635495 PMCID: PMC7908005 DOI: 10.1007/s10877-021-00674-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Accepted: 02/12/2021] [Indexed: 12/19/2022]
Abstract
Purpose The COVID-19-related shortage of ICU beds magnified the need of tools to properly titrate the ventilator assistance. We investigated whether bedside-available indices such as the ultrasonographic changes in diaphragm thickening ratio (TR) and the tidal swing in central venous pressure (ΔCVP) are reliable estimates of inspiratory effort, assessed as the tidal swing in esophageal pressure (ΔPes). Methods Prospective, observational clinical investigation in the intensive care unit of a tertiary care Hospital. Fourteen critically-ill patients were enrolled (age 64 ± 7 years, BMI 29 ± 4 kg/m2), after 6 [3; 9] days from onset of assisted ventilation. A three-level pressure support trial was performed, at 10 (PS10), 5 (PS5) and 0 cmH2O (PS0). In each step, the esophageal and central venous pressure tidal swing were recorded, as well as diaphragm ultrasound. Results The reduction of pressure support was associated with an increased respiratory rate and a reduced tidal volume, while minute ventilation was unchanged. ΔPes significantly increased with reducing support (5 [3; 8] vs. 8 [14; 13] vs. 12 [6; 16] cmH2O, p < 0.0001), as did the diaphragm TR (9.2 ± 6.1 vs. 17.6 ± 7.2 vs. 28.0 ± 10.0%, p < 0.0001) and the ΔCVP (4 [3; 7] vs. 8 [5; 9] vs. 10 [7; 11] cmH2O, p < 0.0001). ΔCVP was significantly associated with ΔPes (R2 = 0.810, p < 0.001), as was diaphragm TR, albeit with a lower coefficient of determination (R2 = 0.399, p < 0.001). Conclusions In patients with COVID-19-associated respiratory failure undergoing assisted mechanical ventilation, ΔCVP is a better estimate of inspiratory effort than diaphragm ultrasound. Supplementary Information The online version contains
supplementary material available at 10.1007/s10877-021-00674-4.
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Affiliation(s)
- Sergio Lassola
- SC Anestesia e Rianimazione 1, Ospedale Santa Chiara, Trento, Italy
| | - Sara Miori
- SC Anestesia e Rianimazione 1, Ospedale Santa Chiara, Trento, Italy
| | - Andrea Sanna
- SC Anestesia e Rianimazione 1, Ospedale Santa Chiara, Trento, Italy
| | - Alberto Cucino
- SC Anestesia e Rianimazione 1, Ospedale Santa Chiara, Trento, Italy
| | - Sandra Magnoni
- SC Anestesia e Rianimazione 1, Ospedale Santa Chiara, Trento, Italy
| | - Michele Umbrello
- SC Anestesia e Rianimazione II, Ospedale San Carlo Borromeo, ASST Santi Paolo e Carlo, Milano, Italy.
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18
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Xu X, Wu R, Zhang YJ, Li HW, He XH, Wang SM. Value of Combination of Heart, Lung, and Diaphragm Ultrasound in Predicting Weaning Outcome of Mechanical Ventilation. Med Sci Monit 2020; 26:e924885. [PMID: 32769960 PMCID: PMC7433387 DOI: 10.12659/msm.924885] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Background Postextubation distress is detrimental to the prognosis of critically ill patients with successful spontaneous breathing trial. The known risk factors of failed weaning are associated with the heart, lungs, and diaphragm. The aim of this study was to explore the role of a combined model including indicators of heart, lung, and diaphragm ultrasound in predicting the weaning outcome. Material/Methods Patients’ clinical data and ultrasonic features of heart, lungs, and diaphragm were recorded. Patients were included in either the failed weaning group (n=24) or the successful weaning group (n=81). The association of potential variables with the risk of weaning failure was determined using multivariate logistic regression analysis. The accuracy of potential indicators for predicting the weaning outcome were evaluated and a multiindicator combined model was established to improve the predictive accuracy. Results Brain natriuretic peptide (odds ratio [OR]=1.120, P=0.004), left-atrial pressure (LAP) (OR=1.333, P=0.005), lung ultrasound score (LUS) (OR=1.736, P=0.001), and hemidiaphragm dysfunction (OR=3.942, P=0.014) were associated with an increased risk of weaning failure. However, all of these indicators could not accurately predict the weaning outcome independently (all areas under the curve [AUCs] <0.9). The combination of LAP, LUS, and hemidiaphragm dysfunction showed the highest AUC (AUC=0.919). Conclusions The combined model including LAP, LUS, and hemidiaphragm dysfunction were the most accurate method for the prediction.
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Affiliation(s)
- Xia Xu
- Department of Ultrasound, Ordos Central Hospital, Ordos, Inner Mongolia, China (mainland)
| | - Rong Wu
- Department of Ultrasound, Ordos Central Hospital, Ordos, Inner Mongolia, China (mainland)
| | - Ya-Jiang Zhang
- Department of Cardiology, Ordos Central Hospital, Ordos, Inner Mongolia, China (mainland)
| | - Hui-Wen Li
- Department of Ultrasound, Ordos Central Hospital, Ordos, Inner Mongolia, China (mainland)
| | - Xiu-Hong He
- Department of Ultrasound, Ordos Central Hospital, Ordos, Inner Mongolia, China (mainland)
| | - Shu-Min Wang
- Department of Ultrasound, Ordos Central Hospital, Ordos, Inner Mongolia, China (mainland)
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19
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Ultrasonographic evaluation of lung and heart in predicting successful weaning in mechanically ventilated neurosurgical patients. J Clin Monit Comput 2020; 35:189-197. [PMID: 31927703 PMCID: PMC7222928 DOI: 10.1007/s10877-020-00460-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Accepted: 01/08/2020] [Indexed: 11/25/2022]
Abstract
In critically ill neurosurgical patients, delayed and premature extubation increases the risk of morbidity and mortality. Assessment of critically ill patients before and during spontaneous breathing trial (SBT) is crucial in predicting weaning failure. We explored the trend of changes with integrated lung and cardiac ultrasonography in predicting success of weaning in neurosurgical patients. Lung ultrasound and cardiac ultrasound was performed before and after 30 min and 120 min of SBT. Lung ultrasound score (LUS, range 0–36) was calculated using a predefined method of assessment of six chest regions on either side. The left ventricular function was evaluated by measuring fractional area change. The maximum velocities of mitral inflow E and A waves (E/A), deceleration time of E wave (DTE) and tissue doppler based E′ wave at lateral annulus to calculate E/E′, were measured to assess left ventricular filling pressure. Twenty seven patients underwent SBT, among these 22 had success and five had failure of SBT. The SBT failure group had higher baseline LUS and progressively higher LUS during SBT compared to the success group, suggesting significant lung de-recruitment. There was significant increase in the LV filling pressure (increase E/A and E/E′, decrease in DTE) after 30 and 120 min of SBT in failure group compared to the success group. Point of care lung and cardiac ultrasonography may be useful in detecting cardiopulmonary changes induced by SBT. Higher lung aeration loss and LV filling pressure were observed with SBT failure group.
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20
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Chen YY, Jerng JS, Chen JJ, Chang FC, Kuo YW, Wang HC, Wu HD. Changes in albuminuria during the spontaneous breathing trial: A prospective observational study. J Formos Med Assoc 2020; 119:488-495. [PMID: 31324438 DOI: 10.1016/j.jfma.2019.07.006] [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: 11/19/2018] [Revised: 06/11/2019] [Accepted: 07/04/2019] [Indexed: 06/10/2023] Open
Abstract
BACKGROUND We hypothesized urine albumin concentration may detect the early increasing cardiac load during the spontaneous breathing trial (SBT). The purpose of our study is to determine whether the changes in urine albumin concentration before and after the SBT correlate with SBT outcome. METHODS This prospective observational study was conducted from January 2013 to September 2013. Patients receiving endotracheal tube intubation due to acute respiratory failure were included. Urine albumin concentration was measured upon admission to the intensive care unit, before and after the SBT. RESULTS A total of 211 patients with respiratory failure were screened. Finally, 69 patients were included for analysis. Among the 69 patients received the SBT, 61 patients passed the SBT while 8 patients didn't. Urine albumin concentration upon admission was 251.00 ± 108.21 mg/g in the SBT success group and 260.87 ± 77.95 mg/g in the SBT failure group (p = 0.97). The mean percent change in urine albumin concentration during the SBT was significantly higher in the SBT failure group (+58.44%) than in the SBT success group (+13.11%) (p = 0.02). Univariable and multivariable logistic regression model showed that the difference of urine albumin concentration before and after the SBT correlated significantly with SBT failure (adjusted OR:1.04, p = 0.01). CONCLUSION This open label pilot study demonstrates the significant association of the changes in urine albumin concentration with SBT outcome. Further study is warranted to investigate the predictive value of urine albumin concentration.
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Affiliation(s)
- You-Yi Chen
- Division of Pulmonary Medicine, Department of Internal Medicine, National Taiwan University Hospital, Yun-Lin Branch, Douliou, Taiwan
| | - Jih-Shuin Jerng
- Division of Pulmonary Medicine, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Jien-Jiun Chen
- Cardiovascular Center, National Taiwan University Hospital, Yun-Lin Branch, Douliou, Taiwan
| | - Fan-Chi Chang
- Division of Pulmonary Medicine, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Yao-Wen Kuo
- Department of Integrated Diagnostics & Therapeutics, National Taiwan University Hospital, Taipei, Taiwan.
| | - Hao-Chien Wang
- Division of Pulmonary Medicine, Department of Internal Medicine, National Taiwan University Hospital, Taipei, Taiwan
| | - Huey-Dong Wu
- Department of Integrated Diagnostics & Therapeutics, National Taiwan University Hospital, Taipei, Taiwan
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21
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Dubo S, Valenzuela ED, Aquevedo A, Jibaja M, Berrutti D, Labra C, Lagos R, García MF, Ramírez V, Tobar M, Picoita F, Peláez C, Carpio D, Alegría L, Hidalgo C, Godoy K, Bruhn A, Hernández G, Bakker J, Castro R. Early rise in central venous pressure during a spontaneous breathing trial: A promising test to identify patients at high risk of weaning failure? PLoS One 2019; 14:e0225181. [PMID: 31805071 PMCID: PMC6894783 DOI: 10.1371/journal.pone.0225181] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Accepted: 10/30/2019] [Indexed: 11/19/2022] Open
Abstract
Background The spontaneous breathing trial (SBT) assesses the risk of weaning failure by evaluating some physiological responses to the massive venous return increase imposed by discontinuing positive pressure ventilation. This trial can be very demanding for some critically ill patients, inducing excessive physical and cardiovascular stress, including muscle fatigue, heart ischemia and eventually cardiac dysfunction. Extubation failure with emergency reintubation is a serious adverse consequence of a failed weaning process. Some data suggest that as many as 50% of patients that fail weaning do so because of cardiac dysfunction. Unfortunately, monitoring cardiovascular function at the time of the SBT is complex. The aim of our study was to explore if central venous pressure (CVP) changes were related to weaning failure after starting an SBT. We hypothesized that an early rise on CVP could signal a cardiac failure when handling a massive increase on venous return following a discontinuation of positive pressure ventilation. This CVP rise could identify a subset of patients at high risk for extubation failure. Methods Two-hundred and four mechanically ventilated patients in whom an SBT was decided were subjected to a monitoring protocol that included blinded assessment of CVP at baseline, and at 2 minutes after starting the trial (CVP-test). Weaning failure was defined as reintubation within 48-hours following extubation. Comparisons between two parametric or non-parametric variables were performed with student T test or Mann Whitney U test, respectively. A logistic multivariate regression was performed to determine the predictive value on extubation failure of usual clinical variables and CVP at 2-min after starting the SBT. Results One-hundred and sixty-five patients were extubated after the SBT, 11 of whom were reintubated within 48h. Absolute CVP values at 2-minutes, and the change from baseline (dCVP) were significantly higher in patients with extubation failure as compared to those successfully weaned. dCVP was an early predictor for reintubation (OR: 1.70 [1.31,2.19], p<0.001). Conclusions An early rise in CVP after starting an SBT was associated with an increased risk of extubation failure. This might represent a warning signal not captured by usual SBT monitoring and could have relevant clinical implications.
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Affiliation(s)
- Sebastián Dubo
- Departamento de Kinesiología, Facultad de Medicina, Universidad de Concepción, Concepción, Chile
- Programa de Doctorado en Ciencias Médicas, Universidad de la Frontera, Temuco, Chile
| | - Emilio Daniel Valenzuela
- Departamento de Medicina Intensiva, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Andrés Aquevedo
- Unidad de Pacientes Críticos, Hospital Dr. Sótero del Río, Santiago, Chile
| | - Manuel Jibaja
- Unidad de Cuidados Intensivos, Hospital Eugenio Espejo, Quito, Ecuador
- Escuela de Medicina, Universidad Internacional de Ecuador, Quito, Ecuador
| | - Dolores Berrutti
- Centro de Terapia Intensiva, Hospital de Clínicas, Universidad de la Republica de Uruguay, Montevideo, Uruguay
| | - Christian Labra
- Departamento de Medicina Intensiva, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Rossana Lagos
- Departamento de Medicina Intensiva, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | | | - Vanessa Ramírez
- Unidad de Cuidados Intensivos, Hospital Eugenio Espejo, Quito, Ecuador
| | - Milton Tobar
- Unidad de Cuidados Intensivos, Hospital Eugenio Espejo, Quito, Ecuador
| | - Fabricio Picoita
- Unidad de Cuidados Intensivos, Hospital Eugenio Espejo, Quito, Ecuador
| | - Cristian Peláez
- Unidad de Cuidados Intensivos, Hospital Eugenio Espejo, Quito, Ecuador
| | - David Carpio
- Departamento de Medicina Intensiva, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
- Programa de Doctorado en Ciencias Médicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Leyla Alegría
- Departamento de Medicina Intensiva, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Carolina Hidalgo
- Unidad de Cuidados Intensivos Cardioquirúrgicos, Hospital Guillermo Grant Benavente, Concepción, Chile
| | - Karen Godoy
- Unidad de Cuidados Intensivos Neuroquirúrgicos, Hospital Guillermo Grant Benavente, Concepción, Chile
| | - Alejandro Bruhn
- Departamento de Medicina Intensiva, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Glenn Hernández
- Departamento de Medicina Intensiva, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Jan Bakker
- Departamento de Medicina Intensiva, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
- Department of Pulmonary and Critical Care, Columbia University College of Physicians and Surgeons, New York, New York, United States of America
- Department of Intensive Care Adults, Erasmus MC University Medical Center, Rotterdam, Netherlands
- Department of Pulmonary and Critical Care, New York University Medical Center, New York, New York, United States of America
| | - Ricardo Castro
- Departamento de Medicina Intensiva, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
- * E-mail:
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Contribution of Levosimendan in Weaning from Mechanical Ventilation in Patients with Left Ventricular Dysfunction: A Pilot Study. Crit Care Res Pract 2019; 2019:7169492. [PMID: 31428473 PMCID: PMC6681623 DOI: 10.1155/2019/7169492] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Accepted: 06/04/2019] [Indexed: 12/17/2022] Open
Abstract
Purpose Mechanically ventilated patients with left ventricular (LV) dysfunction are at risk of weaning failure. We hypothesized that optimization of cardiovascular function might facilitate the weaning process. Therefore, we investigated the efficacy of levosimendan in difficult-to-wean patients with impaired LV performance. Materials and Methods Nineteen mechanically ventilated patients, with LV ejection fraction (LVEF) 34 ± 8%, difficult-to-wean from the ventilator, were assessed by transthoracic echocardiography before the start and at the end of a spontaneous breathing trial (SBT) (first SBT). Eight patients successfully weaned. The remaining 11 failed-to-wean patients received a 24-hour infusion of levosimendan, and they were reassessed during a second SBT. Results After levosimendan administration, LVEF increased from 30 ± 10 to 36 ± 3% (p=0.01). End-SBT peak e′ velocity increased from 7 to 9 cm/s (p=0.02). E/e′ increased from 10.5 to 12.9 during the first SBT, whereas it remained constant at 10 throughout the second SBT (p=0.01). During the second SBT, partial pressure of arterial oxygen and central venous oxygen saturation improved, compared to the first one (93 ± 34 vs. 67 ± 28 mmHg, p=0.03, and 66 ± 11% vs. 57 ± 9%, p=0.02, respectively). Nine of the 11 patients were successfully weaned from the ventilator. Conclusions In difficult-to-wean from mechanical ventilation patients with LV dysfunction, levosimendan might contribute to successful weaning by improving both systolic and diastolic LV function.
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23
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Steriade AT, Johari S, Sargarovschi N, Necula D, Tudose CE, Ionita D, Bogdan MA, Bumbacea D. Predictors of outcome of noninvasive ventilation in severe COPD exacerbation. BMC Pulm Med 2019; 19:131. [PMID: 31319839 PMCID: PMC6639947 DOI: 10.1186/s12890-019-0892-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2018] [Accepted: 07/09/2019] [Indexed: 12/24/2022] Open
Abstract
Background Noninvasive ventilation (NIV) reduces the rate of endotracheal intubation (ETI) and overall mortality in severe acute exacerbation of COPD (AECOPD) with acute respiratory failure and is increasingly applied in respiratory intermediate care units. However, inadequate patient selection and incorrect management of NIV increase mortality. We aimed to identify factors that predict the outcome of NIV in AECOPD. Also, we looked for factors that influence ventilator settings and duration. Methods A prospective cohort study was undertaken in a respiratory intermediate care unit in an academic medical center between 2016 and 2017. Age, BMI, lung function, arterial pH and pCO2 at admission (t0), at 1–2 h (t1) and 4–6 h (t2) after admission, creatinine clearance, echocardiographic data (that defined left heart dysfunction), mean inspiratory pressure during the first 72 h (mIPAP-72 h) and hours of NIV during the first 72 h (dNIV-72 h) were recorded. Main outcome was NIV failure (i.e., ETI or in-hospital death). Secondary outcomes were in-hospital mortality, length of stay (LOS), duration of NIV (days), mIPAP-72 h, and dNIV-72 h. Results We included 89 patients (45 male, mean age 67.6 years) with AECOPD that required NIV. NIV failure was 12.4%, and in-hospital mortality was 11.2%. NIV failure was correlated with days of NIV, LOS, in-hospital mortality (p < 0.01), and kidney dysfunction (p < 0.05). In-hospital mortality was strongly associated with days of NIV (OR 1.27, 95%CI: 1.07–1.5, p < 0.01) and with FEV1 (p < 0.05). All other investigated parameters (including left heart dysfunction, dNIV-72 h, mIPAP-72 h, pH, etc.) did not influence NIV failure or mortality. dNIV-72 h and days of NIV were independent predictors of LOS (p < 0.01). Regarding the secondary outcomes, left heart dysfunction and pH at 1-2 h independently predicted NIV duration (dNIV-72 h, p < 0.01), while BMI and baseline pCO2 predicted NIV settings (mIPAP-72 h, p < 0.01). Conclusion In-hospital mortality and NIV failure were not influenced by BMI, left heart dysfunction, age, nor by arterial blood gas values in the first 6 h of NIV. Patients with severe acidosis and left heart dysfunction required prolonged use of NIV. BMI and pCO2 levels influence the NIV settings in AECOPD regardless of lung function.
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Affiliation(s)
- Alexandru T Steriade
- Department of Pneumology & Acute Respiratory Care, "Elias" Emergency University Hospital, 17 Marasti Blvd, 011461, Bucharest, Romania. .,"Carol Davila" University of Medicine and Pharmacy, 8 Eroii Sanitari Blvd, 050474, Bucharest, Romania.
| | - Shirin Johari
- Department of Pneumology & Acute Respiratory Care, "Elias" Emergency University Hospital, 17 Marasti Blvd, 011461, Bucharest, Romania.,"Carol Davila" University of Medicine and Pharmacy, 8 Eroii Sanitari Blvd, 050474, Bucharest, Romania
| | - Nicoleta Sargarovschi
- Department of Pneumology & Acute Respiratory Care, "Elias" Emergency University Hospital, 17 Marasti Blvd, 011461, Bucharest, Romania
| | - Daniela Necula
- Department of Pneumology & Acute Respiratory Care, "Elias" Emergency University Hospital, 17 Marasti Blvd, 011461, Bucharest, Romania
| | - Cornelia E Tudose
- Department of Pneumology & Acute Respiratory Care, "Elias" Emergency University Hospital, 17 Marasti Blvd, 011461, Bucharest, Romania.,"Carol Davila" University of Medicine and Pharmacy, 8 Eroii Sanitari Blvd, 050474, Bucharest, Romania
| | - Diana Ionita
- Department of Pneumology & Acute Respiratory Care, "Elias" Emergency University Hospital, 17 Marasti Blvd, 011461, Bucharest, Romania
| | - Miron A Bogdan
- "Carol Davila" University of Medicine and Pharmacy, 8 Eroii Sanitari Blvd, 050474, Bucharest, Romania.,"Marius Nasta" Institute of Pneumology, 90 Viilor St., București, 050152, Bucharest, Romania
| | - Dragos Bumbacea
- Department of Pneumology & Acute Respiratory Care, "Elias" Emergency University Hospital, 17 Marasti Blvd, 011461, Bucharest, Romania.,"Carol Davila" University of Medicine and Pharmacy, 8 Eroii Sanitari Blvd, 050474, Bucharest, Romania
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Ewert R, Heine A, Bollmann T, Müller-Heinrich A, Gläser S, Opitz CF. Right Heart Catheterization During Exercise in Patients with COPD-An Overview of Clinical Results and Methodological Aspects. COPD 2019; 15:588-599. [PMID: 30894079 DOI: 10.1080/15412555.2018.1545832] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
While right heart catheterization (RHC) at rest is the gold standard to assess pulmonary hemodynamics in patients with chronic obstructive pulmonary disease (COPD) and pulmonary hypertension (PH), the invasive measurement of exercise hemodynamics is less well established in this group. Since exercise hemodynamics are increasingly recognized as important clinical information in patients with PH, our goal was to review the literature in this field to provide a basis for clinical use, further studies, and future recommendations. We identified 69 studies (published since 1968) reporting RHC data in 2819 patients with COPD, of whom 2561 underwent exercise testing. Few studies simultaneously measured gas exchange during exercise. Overall, these studies showed large variations in the patient populations and research questions studied and the methods and definitions employed. Despite these limitations, the data consistently demonstrated the presence of precapillary PH at rest in up to 38% of patients with COPD. With exercise, a relevant proportion of patients developed an abnormal hemodynamic response, depending on the definition used. Furthermore, some studies assessed right ventricular function during exercise and showed a blunted increase in right ventricular ejection fraction. Drug effects and the impact of interventional procedures were also studied. Again, due to large variations in the patients studied and the methods used, firm conclusions are difficult to derive. Despite the limitations of this dataset, several recommendations with respect to technical aspects (body position, exercise protocol, and data acquisition) can be inferred for this challenging patient population and may be helpful for further studies or recommendations.
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Affiliation(s)
- Ralf Ewert
- a Department of Internal Medicine B , University Hospital Greifswald , Greifswald, Germany
| | - Alexander Heine
- a Department of Internal Medicine B , University Hospital Greifswald , Greifswald, Germany
| | - Tom Bollmann
- a Department of Internal Medicine B , University Hospital Greifswald , Greifswald, Germany
| | | | - Sven Gläser
- b Vivantes Klinik Berlin-Spandau, Klinik für Pneumologie , Berlin , Germany
| | - Christian F Opitz
- c DRK-Kliniken Berlin-Westend, Klinik für Kardiologie , Berlin , Germany
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25
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Ferré A, Guillot M, Lichtenstein D, Mezière G, Richard C, Teboul JL, Monnet X. Lung ultrasound allows the diagnosis of weaning-induced pulmonary oedema. Intensive Care Med 2019; 45:601-608. [PMID: 30863935 DOI: 10.1007/s00134-019-05573-6] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2018] [Accepted: 02/19/2019] [Indexed: 12/19/2022]
Abstract
RATIONALE Detecting weaning-induced pulmonary oedema (WIPO) is important because its treatment might prompt extubation. For this purpose, lung ultrasound might be an attractive tool, since it demonstrates pulmonary oedema through the appearance of B-lines. OBJECTIVES To test the ideal profile (increase in the number of B-lines) for diagnosing WIPO. METHODS Before and at the end of 62 spontaneous breathing trials (SBT) performed in 42 patients, we prospectively assessed lung ultrasound on four anterior chest wall points. B-lines were counted before and at the end of SBT. We looked for the threshold of B-line increase (Delta-B-lines) that provided the best diagnostic accuracy, compared to the reference diagnosis of WIPO established by experts blinded to lung ultrasound. RESULTS SBT failed in 33 cases. WIPO occurred in 17 cases and all failed. The best diagnostic accuracy was reached with a Delta-B-lines ≥ 6. Among WIPO, the number of B-lines increased by ≥ 6 in 15 cases (including 13 cases with an increase of ≥ 8 B-lines). Among the 16 cases with SBT failure but without WIPO, the Delta-B-lines was ≥ 6 in two cases. Among the 33 cases with SBT failure, this profile diagnosed WIPO with a sensitivity of 88% (64-98) and a specificity of 88% (62-98) [area under the receiver operating characteristic curve 0.91 (0.75-0.98)]. Among the 29 cases with SBT success, a Delta-B-lines ≥ 6 occurred in two cases. CONCLUSIONS This study suggests that a Delta-B-lines ≥ 6 on four anterior points allows the diagnosis of WIPO with the best accuracy. This should be confirmed in larger populations.
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Affiliation(s)
- Alexis Ferré
- Inserm UMR_S 999, Université Paris-Sud, Faculté de Médecine, Université Paris-Saclay, Le Kremlin-Bicêtre, France.,AP-HP, Service de médecine intensive-réanimation, Hôpital de Bicêtre, 78, rue du Général Leclerc, 94 270, Le Kremlin-Bicêtre, France
| | - Max Guillot
- Inserm UMR_S 999, Université Paris-Sud, Faculté de Médecine, Université Paris-Saclay, Le Kremlin-Bicêtre, France.,AP-HP, Service de médecine intensive-réanimation, Hôpital de Bicêtre, 78, rue du Général Leclerc, 94 270, Le Kremlin-Bicêtre, France
| | - Daniel Lichtenstein
- AP-HP, Service de réanimation médicale, Hôpital Ambroise-Paré, Boulogne, Paris, France
| | - Gilbert Mezière
- Service de réanimation polyvalente, Centre Hospitalier Gaston Ramon, Sens, France
| | - Christian Richard
- Inserm UMR_S 999, Université Paris-Sud, Faculté de Médecine, Université Paris-Saclay, Le Kremlin-Bicêtre, France.,AP-HP, Service de médecine intensive-réanimation, Hôpital de Bicêtre, 78, rue du Général Leclerc, 94 270, Le Kremlin-Bicêtre, France
| | - Jean-Louis Teboul
- Inserm UMR_S 999, Université Paris-Sud, Faculté de Médecine, Université Paris-Saclay, Le Kremlin-Bicêtre, France.,AP-HP, Service de médecine intensive-réanimation, Hôpital de Bicêtre, 78, rue du Général Leclerc, 94 270, Le Kremlin-Bicêtre, France
| | - Xavier Monnet
- Inserm UMR_S 999, Université Paris-Sud, Faculté de Médecine, Université Paris-Saclay, Le Kremlin-Bicêtre, France. .,AP-HP, Service de médecine intensive-réanimation, Hôpital de Bicêtre, 78, rue du Général Leclerc, 94 270, Le Kremlin-Bicêtre, France.
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26
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Fisser C, Spoletini G, Soe AK, Livesey A, Schreiber A, Swingwood E, Bos LD, Dreher M, Schultz MJ, Heunks L, Scala R. European Respiratory Society International Congress 2018: highlights from Assembly 2 on respiratory intensive care. ERJ Open Res 2019; 5:00198-2018. [PMID: 30847349 PMCID: PMC6397914 DOI: 10.1183/23120541.00198-2018] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2018] [Accepted: 01/28/2019] [Indexed: 12/14/2022] Open
Abstract
The respiratory intensive care Assembly of the European Respiratory Society is proud to present a summary of several important sessions held at the International Congress in Paris in 2018. For the highly esteemed reader who may have missed the Congress, a concise review was written on three topics: the state-of-the-art session on respiratory critical care, hot topics in weaning and the best abstracts in noninvasive ventilation. The respiratory intensive care Assembly of the European Respiratory Society is proud to present a summary of several important sessions from the 2018 #ERSCongress in Parishttp://ow.ly/6Du830nFESK
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Affiliation(s)
- Christoph Fisser
- Dept of Internal Medicine II, University Hospital Regensburg, Regensburg, Germany.,Dept of Pneumology, Hospital Donaustauf, Donaustauf, Germany
| | - Giulia Spoletini
- Respiratory Dept, St James's University Hospital, Leeds Teaching Hospital NHS Trust, Leeds, UK.,Leeds Institute of Biomedical and Clinical Sciences, University of Leeds, Leeds, UK
| | - Aung Kyaw Soe
- Dept of Hospital Therapy, Pediatric Faculty, Pirogov Russian National Research Medical University, Moscow, Russian Federation
| | - Alana Livesey
- Heartlands Hospital, University Hospitals Birmingham, Birmingham, UK
| | - Annia Schreiber
- Dept of Medicine, Division of Respirology, University Health Network, Toronto, ON, Canada
| | - Ema Swingwood
- Physiotherapy Dept - Adult Therapy Services, University Hospitals Bristol NHS Foundation Trust, Bristol, UK
| | - Lieuwe D Bos
- Dept of Intensive Care, Amsterdam UMC, location AMC, Amsterdam, The Netherlands
| | - Michael Dreher
- Dept of Pneumology and Intensive Care Medicine, University Hospital Aachen, Germany
| | - Marcus J Schultz
- Dept of Intensive Care, Amsterdam UMC, location AMC, Amsterdam, The Netherlands.,Mahidol-Oxford Tropical Medicine Research Unit (MORU), Mahidol University, Bangkok, Thailand
| | - Leo Heunks
- Dept of Intensive Care, Amsterdam UMC, location VUMC, Amsterdam, The Netherlands
| | - Raffaele Scala
- Pulmonology and Respiratory Intensive Care Unit, S. Donato Hospital, Arezzo, Italy
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27
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Routsi C, Stanopoulos I, Kokkoris S, Sideris A, Zakynthinos S. Weaning failure of cardiovascular origin: how to suspect, detect and treat-a review of the literature. Ann Intensive Care 2019; 9:6. [PMID: 30627804 PMCID: PMC6326918 DOI: 10.1186/s13613-019-0481-3] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Accepted: 01/02/2019] [Indexed: 01/09/2023] Open
Abstract
Among the multiple causes of weaning failure from mechanical ventilation, cardiovascular dysfunction is increasingly recognized as a quite frequent cause that can be treated successfully. In this review, we summarize the contemporary evidence of the most important clinical and diagnostic aspects of weaning failure of cardiovascular origin with special focus on treatment. Pathophysiological mechanisms are complex and mainly include increase in right and left ventricular preload and afterload and potentially induce myocardial ischemia. Patients at risk include those with preexisting cardiopulmonary disease either known or suspected. Clinically, cardiovascular etiology as a predominant cause or a contributor to weaning failure, though critical for early diagnosis and intervention, may be difficult to be recognized and distinguished from noncardiac causes suggesting the need of high suspicion. A cardiovascular diagnostic workup including bedside echocardiography, lung ultrasound, electrocardiogram and biomarkers of cardiovascular dysfunction or other adjunct techniques and, in selected cases, right heart catheterization and/or coronary angiography, should be obtained to confirm the diagnosis. Official clinical practice guidelines that address treatment of a confirmed weaning-induced cardiovascular dysfunction do not exist. As the etiologies of weaning-induced cardiovascular dysfunction are diverse, principles of management depend on the individual pathophysiological mechanisms, including preload optimization by fluid removal, guided by B-type natriuretic peptide measurement, nitrates administration in excessive afterload and/or myocardial ischemia, contractility improvement in severe systolic dysfunction as well as other rational treatment in specific indications in order to lead to successful weaning from mechanical ventilation.
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Affiliation(s)
- Christina Routsi
- First Department of Critical Care, Medical School, National and Kapodistrian University of Athens, “Evangelismos” Hospital, Ipsilantou 45-47, 10676 Athens, Greece
| | - Ioannis Stanopoulos
- Respiratory Failure Unit, Medical School, “G. Papanikolaou” Hospital, Aristotle University, Thessaloníki, Greece
| | - Stelios Kokkoris
- First Department of Critical Care, Medical School, National and Kapodistrian University of Athens, “Evangelismos” Hospital, Ipsilantou 45-47, 10676 Athens, Greece
| | - Antonios Sideris
- Department of Cardiology, “Evangelismos” Hospital, Athens, Greece
| | - Spyros Zakynthinos
- First Department of Critical Care, Medical School, National and Kapodistrian University of Athens, “Evangelismos” Hospital, Ipsilantou 45-47, 10676 Athens, Greece
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28
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Amarja H, Bhuvana K, Sriram S. Prospective Observational Study on Evaluation of Cardiac Dysfunction Induced during the Weaning Process. Indian J Crit Care Med 2019; 23:15-19. [PMID: 31065203 PMCID: PMC6481267 DOI: 10.5005/jp-journals-10071-23106] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Context Weaning induced cardiac dysfunction can occur without underlying heart disease. Changes in intrathoracic pressure, systemic vascular resistance, preload and afterload leading to heart-lung interactions are the possible explanatory mechanisms Aims The aim of the current study was whether the assessment and identification of cardiac dysfunction induced during the weaning process could predict the outcome of extubation. Settings and design A prospective observational study with convenience sampling method was conducted from May 2015 to April 2016 after institutional ethical committee approval (ref 161/2015). Materials and methods Patients over eighteen and planned for extubation were included. Weaning method used was a spontaneous breathing trial (SBT) by pressure support-positive end-expiratory pressure (PS-PEEP). Baseline characteristics, weaning, and echocardiography parameters were collected pre extubation. Post-extubation echocardiographic parameters were collected within six hours as per the protocol. The primary outcome was extubation failure (reintubation within 48 hours). Secondary outcomes were ICU length of stay and ICU mortality. Statistical analysis Statistical method used is STATA™ (Version14, College Station TX). Results Out of one hundred and sixty-one patients, twenty-one failed extubation (13.04 %). Pre-extubation echocardiographic parameters were similar in two groups except for preexisting LV systolic dysfunction. Post-extubation E/e` (9.30 vs. 7.71 p = 0.018) was higher in the extubation failure group. Extubation failure group had higher intensive care unit (ICU) length of stay and ICU mortality. Conclusion In our study E/e` during a weaning trial did not predict extubation success. Cardiac dysfunction induced during weaning may get masked during weaning and manifests postextubation. This needs to be verified in subsequent studies. Key messages Cardiac dysfunction induced during the weaning process may get masked and manifests post-extubation. Echocardiographic assessment during the weaning process and post-extubation helps to evaluate and identify the patients at risk of reintubation. How to cite this article Amarja H, Bhuvana K, Sriram S. Prospective Observational Study on Evaluation of Cardiac Dysfunction Induced during the Weaning Process. Indian Journal of Critical Care Medicine, January 2019;23(1):15-19.
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Affiliation(s)
- Havaldar Amarja
- Department of Critical Care Medicine, St. John's Hospital, Bengaluru, Karnataka, India
| | - Krishna Bhuvana
- Department of Critical Care Medicine, St. John's Hospital, Bengaluru, Karnataka, India
| | - Sampath Sriram
- Department of Critical Care Medicine, St. John's Hospital, Bengaluru, Karnataka, India
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29
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Wang X, Long Y, He H, Shan G, Zhang R, Cui N, Wang H, Zhou X, Rui X, Liu W. Left ventricular-arterial coupling is associated with prolonged mechanical ventilation in severe post-cardiac surgery patients: an observational study. BMC Anesthesiol 2018; 18:184. [PMID: 30522447 PMCID: PMC6284290 DOI: 10.1186/s12871-018-0649-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Accepted: 11/23/2018] [Indexed: 12/20/2022] Open
Abstract
Background Weaning post-cardiac surgery patients from mechanical ventilation (MV) poses a big challenge to these patients. Optimized left ventricular-arterial coupling (VAC) may be crucial for reducing the MV duration of these patients. However, there is no research exploring the relationship between VAC and the duration of MV. We performed this study to investigate the relationship between left ventricular-arterial coupling (VAC) and prolonged mechanical ventilation (MV) in severe post-cardiac surgery patients. Methods This was a single-center retrospective study of 56 severe post-cardiac surgery patients from January 2015 to December 2017 at the Department of Critical Care Medicine of Peking Union Medical College Hospital. Patients were divided into two groups according to the duration of MV (PMV group: prolonged mechanical ventilation group, MV > 6 days; Non-PMV group: non-prolonged mechanical ventilation group, MV ≤ 6 days). Hemodynamics and tissue perfusion data were collected or calculated at admission (T0) and 48 h after admission (T1) to the ICU. Results In terms of hemodynamic and tissue perfusion data, there were no differences between the two groups at admission (T0). Compared with the non-prolonged MV group after 48 h in the ICU (T1), the prolonged MV group had significantly higher values for heart rate (108 ± 13 vs 97 ± 12, P = 0.018), lactate (2.42 ± 1.24 vs.1.46 ± 0.58, P < 0.001), and Ea/Ees (5.93 ± 1.81 vs. 4.05 ± 1.20, P < 0.001). Increased Ea/Ees (odds ratio, 7.305; 95% CI, 1.181–45.168; P = 0.032) and lactate at T1 (odds ratio, 17.796; 95% CI, 1.377–229.988; P = 0.027) were independently associated with prolonged MV. There was a significant relationship between Ea/EesT1 and the duration of MV (r = 0.512, P < 0.01). The area under the receiver operating characteristic (AUC) of the left VAC for predicting prolonged MV was 0.801, and the cutoff value for Ea/Ees was 5.12, with 65.0% sensitivity and 90.0% specificity. Conclusions Left ventricular-arterial coupling was associated with prolonged mechanical ventilation in severe post-cardiac surgery patients. The assessment and optimization of left VAC might be helpful in reducing duration of MV in these patients.
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Affiliation(s)
- Xu Wang
- Department of Critical Care Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Science, 1 Shuaifuyuan, Dongcheng District, Beijing, 100730, China
| | - Yun Long
- Department of Critical Care Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Science, 1 Shuaifuyuan, Dongcheng District, Beijing, 100730, China.
| | - Huaiwu He
- Department of Critical Care Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Science, 1 Shuaifuyuan, Dongcheng District, Beijing, 100730, China
| | - Guangliang Shan
- Department of Epidemiology and Biostatistics, Institute of Basic Medicine Sciences, Chinese Academy of Medical Sciences (CAMS) & School of Basic Medicine, Peking Union Medical College, Beijing, China
| | - Rui Zhang
- Department of Critical Care Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Science, 1 Shuaifuyuan, Dongcheng District, Beijing, 100730, China
| | - Na Cui
- Department of Critical Care Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Science, 1 Shuaifuyuan, Dongcheng District, Beijing, 100730, China
| | - Hao Wang
- Department of Critical Care Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Science, 1 Shuaifuyuan, Dongcheng District, Beijing, 100730, China
| | - Xiang Zhou
- Department of Critical Care Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Science, 1 Shuaifuyuan, Dongcheng District, Beijing, 100730, China
| | - Xi Rui
- Department of Critical Care Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Science, 1 Shuaifuyuan, Dongcheng District, Beijing, 100730, China
| | - Wanglin Liu
- Department of Critical Care Medicine, Peking Union Medical College Hospital, Peking Union Medical College, Chinese Academy of Medical Science, 1 Shuaifuyuan, Dongcheng District, Beijing, 100730, China
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Abstract
Cardiac patients are at high risk of weaning failure due to the abrupt burden to the cardiovascular system resulting from the transition from positive-pressure ventilation to spontaneous breathing. Similarly, numerous patients with borderline cardiac function, left ventricular diastolic dysfunction, chronic obstructive pulmonary disease, especially with associated fluid overload or cumulative positive fluid balance, are at high risk of weaning failure of cardiac origin. The diagnosis of weaning-induced pulmonary oedema (WiPO) relies on the measurement of elevated left ventricular filling pressure, or on the presence of a surrogate reflecting pulmonary or cardiac congestion. Plasma concentration of B-type natriuretic peptide and N-terminal proBNP, biological signs of hemoconcentration (increased circulating protein or hemoglobin levels), or measurement of extravascular pulmonary lung water using transpulmonary thermodilution have been proved valuable surrogates for the identification of weaning failure. Nevertheless, studies have not yet compared these indirect methods to precisely determine their respective diagnostic values for the identification of WiPO, especially in heart failure patients. In addition, none of these approaches directly assess left ventricular filling pressure and the mechanism of WiPO. In contrast, critical care echocardiography is ideally suited to establish the diagnosis of weaning failure of cardiac origin. It allows identifying the high-risk population, monitoring hemodynamically the patient at risk, depicting an abrupt increase of left ventricular filling pressure consistent with WiPO when the patient fails weaning, identifying the underlying mechanism of WiPO, and finally it allows tailoring the therapeutic management of the patient who failed weaning. The impact on patient-centered outcomes of such integrated management strategy based on critical care echocardiography deserves to be prospectively tested in a large population of patients at high risk of weaning failure of cardiac origin.
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Affiliation(s)
- Philippe Vignon
- Medical-Surgical Intensive Care Unit, Dupuytren Teaching Hospital, Limoges, France.,Clinical Investigation Center INSERM 1435, Dupuytren Teaching Hospital, Limoges, France.,Faculty of Medicine, University of Limoges, Limoges, France
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Hofer CK, Geisen M, Hartnack S, Dzemali O, Ganter MT, Zollinger A. Reliability of Passive Leg Raising, Stroke Volume Variation and Pulse Pressure Variation to Predict Fluid Responsiveness During Weaning From Mechanical Ventilation After Cardiac Surgery: A Prospective, Observational Study. Turk J Anaesthesiol Reanim 2018; 46:108-115. [PMID: 29744245 DOI: 10.5152/tjar.2018.29577] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Accepted: 02/06/2018] [Indexed: 11/22/2022] Open
Abstract
Objective During assisted ventilation and spontaneous breathing, functional haemodynamic parameters, including stroke volume variation (SVV) and pulse pressure variation (PPV), are of limited value to predict fluid responsiveness, and the passive leg raising (PLR) manoeuvre has been advocated as a surrogate method. We aimed to study the predictive value of SVV, PPV and PLR for fluid responsiveness during weaning from mechanical ventilation after cardiac surgery. Methods Haemodynamic variables and fluid responsiveness were assessed in 34 patients. Upon arrival at the intensive care unit, measurements were performed during continuous mandatory ventilation (CMV) and spontaneous breathing with pressure support (PSV) and after extubation (SPONT). The prediction of a positive fluid responsiveness (defined as stroke volume increase >15% after fluid administration) was tested by calculating the specific receiver operating characteristic (ROC) curves. Results A significant increase in stroke volumes was observed during CMV, PSV and SPONT after fluid administration. There were 19 fluid responders (55.9%) during CMV, with 22 (64.7%) and 13 (40.6%) during PSV and SPONT, respectively. The predictive value for a positive fluid responsiveness (area under the ROC curve) for SVV was 0.88, 0.70 and 0.56; was 0.83, 0.69 and 0.48 for PPV; was 0.72, 0.74 and 0.70 for PLR during CMV, PSV and SPONT, respectively. Conclusion During mechanical ventilation, adequate prediction of fluid responsiveness using SVV and PPV was observed. However, during spontaneous breathing, the reliability of SVV and PPV was poor. In this period, PLR as a surrogate was able to predict fluid responsiveness better than SVV or PPV but was less reliable than previously reported.
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Affiliation(s)
- Christoph Karl Hofer
- Institute of Anaesthesiology and Intensive Care Medicine, Triemli Hospital Zurich, Switzerland
| | - Martin Geisen
- Institute of Anaesthesiology and Intensive Care Medicine, Triemli Hospital Zurich, Switzerland
| | - Sonja Hartnack
- Section of Epidemiology, Vetsuisse Faculty, University of Zurich, Switzerland
| | - Omer Dzemali
- Division of Cardiac Surgery, Triemli City Hospital Zurich, Switzerland
| | | | - Andreas Zollinger
- Institute of Anaesthesiology and Intensive Care Medicine, Triemli Hospital Zurich, Switzerland
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Antonio ACP, Teixeira C, Castro PS, Zanardo AP, Gazzana MB, Knorst M. Usefulness of radiological signs of pulmonary congestion in predicting failed spontaneous breathing trials. J Bras Pneumol 2018; 43:253-258. [PMID: 29364998 PMCID: PMC5687960 DOI: 10.1590/s1806-37562016000000360] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Accepted: 06/18/2017] [Indexed: 01/15/2023] Open
Abstract
Objective: Inspiratory fall in intrathoracic pressure during a spontaneous breathing trial (SBT) may precipitate cardiac dysfunction and acute pulmonary edema. We aimed to determine the relationship between radiological signs of pulmonary congestion prior to an SBT and weaning outcomes. Methods: This was a post hoc analysis of a prospective cohort study involving patients in an adult medical-surgical ICU. All enrolled individuals met the eligibility criteria for liberation from mechanical ventilation. Tracheostomized subjects were excluded. The primary endpoint was SBT failure, defined as the inability to tolerate a T-piece trial for 30-120 min. An attending radiologist applied a radiological score on interpretation of digital chest X-rays performed before the SBT. Results: A total of 170 T-piece trials were carried out; SBT failure occurred in 28 trials (16.4%), and 133 subjects (78.3%) were extubated at first attempt. Radiological scores were similar between SBT-failure and SBT-success groups (median [interquartile range] = 3 [2-4] points vs. 3 [2-4] points; p = 0.15), which, according to the score criteria, represented interstitial lung congestion. The analysis of ROC curves demonstrated poor accuracy (area under the curve = 0.58) of chest x-rays findings of congestion prior to the SBT for discriminating between SBT failure and SBT success. No correlation was found between fluid balance in the 48 h preceding the SBT and radiological score results (ρ = −0.13). Conclusions: Radiological findings of pulmonary congestion should not delay SBT indication, given that they did not predict weaning failure in the medical-surgical critically ill population. (ClinicalTrials.gov identifier: NCT02022839 [http://www.clinicaltrials.gov/])
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Affiliation(s)
- Ana Carolina Peçanha Antonio
- . Unidade de Terapia Intensiva Adulto, Hospital de Clínicas de Porto Alegre, Universidade Federal do Rio Grande do Sul, Porto Alegre (RS) Brasil.,. Hospital Moinhos de Vento, Porto Alegre (RS) Brasil
| | | | - Priscylla Souza Castro
- . Hospital Moinhos de Vento, Porto Alegre (RS) Brasil.,. Unidade de Terapia Intensiva, Hospital Mãe de Deus, Porto Alegre (RS) Brasil
| | | | | | - Marli Knorst
- . Programa de Pós-Graduação em Pneumologia, Universidade Federal do Rio Grande do Sul, Porto Alegre (RS) Brasil
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Pinheiro BDV. The difficult task of searching for tools that help predict mechanical ventilator weaning success. J Bras Pneumol 2018; 43:249-250. [PMID: 29364995 PMCID: PMC5687957 DOI: 10.1590/s1806-37562017000400001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Affiliation(s)
- Bruno do Valle Pinheiro
- . Serviço de Pneumologia e Terapia Intensiva, Hospital Universitário, Universidade Federal de Juiz de Fora, Juiz de Fora (MG) Brasil
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Geisen M, Ganter MT, Hartnack S, Dzemali O, Hofer CK, Zollinger A. Accuracy, Precision, and Trending of 4 Pulse Wave Analysis Techniques in the Postoperative Period. J Cardiothorac Vasc Anesth 2017; 32:715-722. [PMID: 29217236 DOI: 10.1053/j.jvca.2017.09.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2017] [Indexed: 12/18/2022]
Abstract
OBJECTIVE The aim of this study was to analyze the accuracy, precision, and trending ability of the following 4 pulse wave analysis devices to measure continuous cardiac output: PiCCO2 ([PCCO]; Pulsion Medical System, Munich, Germany); LiDCORapid ([LCCO]; LiDCO Ltd, London, UK); FloTrac/Vigileo ([FCCO]; Edwards Lifesciences, Irvine, CA); and Nexfin ([NCCO]; BMEYE, Amsterdam, The Netherlands). DESIGN Prospective, observational clinical study. SETTING Intensive care unit of a single-center, teaching hospital. PARTICIPANTS The study comprised 22 adult patients after elective coronary artery bypass surgery. INTERVENTIONS Three measurement cycles were performed in all patient durings their immediate postoperative intensive care stay before and after fluid loading. Hemodynamic measurements were performed 5 minutes before and immediately after the administration of 500 mL colloidal fluid over 20 minutes. MEASUREMENTS AND MAIN RESULTS PCCO, LCCO, FCCO, and NCCO were assessed and compared with cardiac output derived from intermittent transpulmonary thermodilution (ICO). One hundred thirty-two matched sets of data were available for analysis. Bland-Altman analysis using linear mixed effects models with random effects for patient and trial revealed a mean bias ±2 standard deviation (%error) of -0.86 ± 1.41 L/min (34.9%) for PCCO-ICO, -0.26 ± 2.81 L/min (46.3%) for LCCO-ICO, -0.28 ± 2.39 L/min (43.7%) for FCCO-ICO, and -0.93 ± 2.25 L/min (34.6%) for NCCO-ICO. Bland-Altman plots without adjustment for repeated measurements and replicates yielded considerably larger limits of agreement. Trend analysis for all techniques did not meet criteria for acceptable performance. CONCLUSIONS All 4 tested devices using pulse wave analysis for measuring cardiac output failed to meet current criteria for meaningful and adequate accuracy, precision, and trending ability in cardiac output monitoring.
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Affiliation(s)
- Martin Geisen
- Institute of Anaesthesiology and Intensive Care Medicine, Triemli Hospital Zurich, Zurich, Switzerland
| | - Michael T Ganter
- Institute of Anaesthesiology, Kantonsspital Winterthur, Winterthur, Switzerland
| | - Sonja Hartnack
- Section of Epidemiology, Vetsuisse Faculty, University of Zurich, Zurich, Switzerland
| | - Omer Dzemali
- Division of Cardiac Surgery, Triemli City Hospital Zurich, Zurich, Switzerland
| | - Christoph K Hofer
- Institute of Anaesthesiology and Intensive Care Medicine, Triemli Hospital Zurich, Zurich, Switzerland.
| | - Andreas Zollinger
- Institute of Anaesthesiology and Intensive Care Medicine, Triemli Hospital Zurich, Zurich, Switzerland
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Antonio ACP, Teixeira C, Castro PS, Savi A, Maccari JG, Oliveira RP, Knorst MM. Behavior of lung ultrasound findings during spontaneous breathing trial. Rev Bras Ter Intensiva 2017; 29:279-286. [PMID: 28832706 PMCID: PMC5632969 DOI: 10.5935/0103-507x.20170038] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2016] [Accepted: 03/08/2017] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVE We aimed to investigate a potential association between B-lines and weaning failure. METHODS Fifty-seven subjects eligible for ventilation liberation were enrolled. Patients with tracheostomy were excluded. Lung ultrasound assessments of six thoracic zones were performed immediately before and at the exnd of the spontaneous breathing trial. B-predominance was defined as any profile with anterior bilateral B-pattern. Patients were followed up to 48 hours after extubation. RESULTS Thirty-eight individuals were successfully extubated; 11 failed the spontaneous breathing trial and 8 needed reintubation within 48 hours of extubation. At the beginning of the T-piece trial, B-pattern or consolidation was already found at the lower and posterior lung regions in more than half of the individuals and remained non-aerated at the end of the trial. A trend toward loss of lung aeration during spontaneous breathing trials was observed only in the spontaneous breathing trial-failure group (p = 0.07), and there was higher B-predominance at the end of the trial (p = 0.01). CONCLUSION A loss of lung aeration during the spontaneous breathing trial in non-dependent lung zones was demonstrated in subjects who failed to wean.
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Affiliation(s)
- Ana Carolina Peçanha Antonio
- Centro de Terapia Intensiva Adulto, Hospital Moinhos de Vento - Porto Alegre (RS), Brasil.,Centro de Terapia Intensiva Adulto, Hospital Mãe de Deus - Porto Alegre (RS), Brasil.,Centro de Terapia Intensiva Adulto, Hospital de Clínicas de Porto Alegre - Porto Alegre (RS), Brasil.,Programa de Pós-Graduação em Pneumologia, Universidade Federal do Rio Grande do Sul - Porto Alegre (RS), Brasil
| | - Cassiano Teixeira
- Centro de Terapia Intensiva Adulto, Hospital Moinhos de Vento - Porto Alegre (RS), Brasil
| | - Priscylla Souza Castro
- Centro de Terapia Intensiva Adulto, Hospital Moinhos de Vento - Porto Alegre (RS), Brasil.,Centro de Terapia Intensiva Adulto, Hospital Mãe de Deus - Porto Alegre (RS), Brasil.,Centro de Terapia Intensiva Adulto, Hospital de Clínicas de Porto Alegre - Porto Alegre (RS), Brasil
| | - Augusto Savi
- Centro de Terapia Intensiva Adulto, Hospital Moinhos de Vento - Porto Alegre (RS), Brasil
| | | | | | - Marli Maria Knorst
- Programa de Pós-Graduação em Pneumologia, Universidade Federal do Rio Grande do Sul - Porto Alegre (RS), Brasil
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Liu J, Shen F, Teboul JL, Anguel N, Beurton A, Bezaz N, Richard C, Monnet X. Cardiac dysfunction induced by weaning from mechanical ventilation: incidence, risk factors, and effects of fluid removal. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2016; 20:369. [PMID: 27836002 PMCID: PMC5106814 DOI: 10.1186/s13054-016-1533-9] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Accepted: 10/14/2016] [Indexed: 01/22/2023]
Abstract
Background Weaning-induced pulmonary oedema (WiPO) is a well-recognised cause of failure of weaning from mechanical ventilation, but its incidence and risk factors have not been reliably described. We wanted to determine the incidence and risk factors in a population of critically ill patients. In addition, we wanted to describe the effects of diuretics when they are administered in this context. Methods We monitored 283 consecutive spontaneous breathing trials (SBT; T-piece trial) performed in 81 patients. In cases with cardiac output monitoring (n = 85, 29 patients), a passive leg raising (PLR) test was performed before SBT. Three experts established the diagnosis of WiPO based on various patient characteristics. Results SBT failed in 128 cases (45 % of all SBT). WiPO occurred in 59 % of these failing cases. Compared to patients without WiPO (n = 52), patients with at least one WiPO (n = 29) had a higher prevalence of chronic obstructive pulmonary disease (COPD) (38 % vs. 12 %, respectively; p < 0.01), previous “structural” cardiopathy (dilated and/or hypertrophic and/or hypokinetic cardiopathy and/or significant valvular disease, 9 % vs. 25 %, respectively; p < 0.01), obesity (45 % vs. 17 %, respectively; p < 0.01), and low left ventricular ejection fraction (55 % vs. 21 %, respectively; p = 0.01). At logistic regression, COPD (odds ratio (OR) 8.7, 95 % confidence interval (CI) 2.0–37.3), previous structural cardiopathy (OR 4.5, 95 % CI 1.4–14.1), and obesity (OR 3.6, 95 % CI 1.2–12.6) were independent risk factors for experiencing at least one episode of WiPO. In 16 cases with WiPO and a negative PLR at baseline, treatment including diuretics was started. In 9 of these cases, the PLR remained negative before the following SBT. A new episode of WiPO occurred in 7 of these instances, while the two other were extubated. In 7 other cases, the PLR became positive before the following SBT. WiPO did not occur anymore in 6 of these 7 patients who were extubated, while the remaining one was not. Conclusions In our population of critically ill patients, WiPO was responsible for 59 % of weaning failures. COPD, previous “structural” cardiopathy, and, to a lesser extent, obesity were the main risk factors. When a treatment including fluid removal had changed preload-independence to preload-dependence, the following SBT was very likely to succeed.
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Affiliation(s)
- Jinglun Liu
- Université Paris-Sud, Faculté de Médecine, Université Paris-Saclay, Le Kremlin-Bicêtre, France.,AP-HP, Service de réanimation médicale, Hôpital de Bicêtre, 78, rue du Général Leclerc, 94 270, Le Kremlin-Bicêtre, France.,Inserm UMR_S 999, Hôpital Marie Lannelongue, Le Plessis-Robinson, France.,Department of Emergency Medicine and Critical Care Medicine, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Feng Shen
- Université Paris-Sud, Faculté de Médecine, Université Paris-Saclay, Le Kremlin-Bicêtre, France.,AP-HP, Service de réanimation médicale, Hôpital de Bicêtre, 78, rue du Général Leclerc, 94 270, Le Kremlin-Bicêtre, France.,Inserm UMR_S 999, Hôpital Marie Lannelongue, Le Plessis-Robinson, France.,Department of Critical Care Medicine, Affiliated Hospital of Guizhou Medical University, Guiyang, China
| | - Jean-Louis Teboul
- Université Paris-Sud, Faculté de Médecine, Université Paris-Saclay, Le Kremlin-Bicêtre, France.,AP-HP, Service de réanimation médicale, Hôpital de Bicêtre, 78, rue du Général Leclerc, 94 270, Le Kremlin-Bicêtre, France.,Inserm UMR_S 999, Hôpital Marie Lannelongue, Le Plessis-Robinson, France
| | - Nadia Anguel
- Université Paris-Sud, Faculté de Médecine, Université Paris-Saclay, Le Kremlin-Bicêtre, France.,AP-HP, Service de réanimation médicale, Hôpital de Bicêtre, 78, rue du Général Leclerc, 94 270, Le Kremlin-Bicêtre, France.,Inserm UMR_S 999, Hôpital Marie Lannelongue, Le Plessis-Robinson, France
| | - Alexandra Beurton
- Université Paris-Sud, Faculté de Médecine, Université Paris-Saclay, Le Kremlin-Bicêtre, France.,AP-HP, Service de réanimation médicale, Hôpital de Bicêtre, 78, rue du Général Leclerc, 94 270, Le Kremlin-Bicêtre, France.,Inserm UMR_S 999, Hôpital Marie Lannelongue, Le Plessis-Robinson, France
| | - Nadia Bezaz
- Université Paris-Sud, Faculté de Médecine, Université Paris-Saclay, Le Kremlin-Bicêtre, France.,AP-HP, Service de réanimation médicale, Hôpital de Bicêtre, 78, rue du Général Leclerc, 94 270, Le Kremlin-Bicêtre, France.,Inserm UMR_S 999, Hôpital Marie Lannelongue, Le Plessis-Robinson, France
| | - Christian Richard
- Université Paris-Sud, Faculté de Médecine, Université Paris-Saclay, Le Kremlin-Bicêtre, France.,AP-HP, Service de réanimation médicale, Hôpital de Bicêtre, 78, rue du Général Leclerc, 94 270, Le Kremlin-Bicêtre, France.,Inserm UMR_S 999, Hôpital Marie Lannelongue, Le Plessis-Robinson, France
| | - Xavier Monnet
- Université Paris-Sud, Faculté de Médecine, Université Paris-Saclay, Le Kremlin-Bicêtre, France. .,AP-HP, Service de réanimation médicale, Hôpital de Bicêtre, 78, rue du Général Leclerc, 94 270, Le Kremlin-Bicêtre, France. .,Inserm UMR_S 999, Hôpital Marie Lannelongue, Le Plessis-Robinson, France.
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Suárez JC, López P, Mancebo J, Zapata L. Diastolic dysfunction in the critically ill patient. Med Intensiva 2016; 40:499-510. [PMID: 27569679 DOI: 10.1016/j.medin.2016.06.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2016] [Revised: 06/14/2016] [Accepted: 06/20/2016] [Indexed: 12/16/2022]
Abstract
Left ventricular diastolic dysfunction is a common finding in critically ill patients. It is characterized by a progressive deterioration of the relaxation and the compliance of the left ventricle. Two-dimensional and Doppler echocardiography is a cornerstone in its diagnosis. Acute pulmonary edema associated with hypertensive crisis is the most frequent presentation of diastolic dysfunction critically ill patients. Myocardial ischemia, sepsis and weaning failure from mechanical ventilation also may be associated with diastolic dysfunction. The treatment is based on the reduction of pulmonary congestion and left ventricular filling pressures. Some studies have found a prognostic role of diastolic dysfunction in some diseases such as sepsis. The present review aims to analyze thoroughly the echocardiographic diagnosis and the most frequent scenarios in critically ill patients in whom diastolic dysfunction plays a key role.
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Affiliation(s)
- J C Suárez
- Servicio de Medicina Intensiva, Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Calle de Sant Quintí, 89, 08026 Barcelona, Spain
| | - P López
- Servicio de Medicina Intensiva, Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Calle de Sant Quintí, 89, 08026 Barcelona, Spain
| | - J Mancebo
- Servicio de Medicina Intensiva, Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Calle de Sant Quintí, 89, 08026 Barcelona, Spain
| | - L Zapata
- Servicio de Medicina Intensiva, Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Calle de Sant Quintí, 89, 08026 Barcelona, Spain.
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Critical care ultrasonography in acute respiratory failure. CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2016; 20:228. [PMID: 27524204 PMCID: PMC4983787 DOI: 10.1186/s13054-016-1400-8] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Accepted: 07/01/2016] [Indexed: 12/12/2022]
Abstract
Acute respiratory failure (ARF) is a leading indication for performing critical care ultrasonography (CCUS) which, in these patients, combines critical care echocardiography (CCE) and chest ultrasonography. CCE is ideally suited to guide the diagnostic work-up in patients presenting with ARF since it allows the assessment of left ventricular filling pressure and pulmonary artery pressure, and the identification of a potential underlying cardiopathy. In addition, CCE precisely depicts the consequences of pulmonary vascular lesions on right ventricular function and helps in adjusting the ventilator settings in patients sustaining moderate-to-severe acute respiratory distress syndrome. Similarly, CCE helps in identifying patients at high risk of ventilator weaning failure, depicts the mechanisms of weaning pulmonary edema in those patients who fail a spontaneous breathing trial, and guides tailored therapeutic strategy. In all these clinical settings, CCE provides unparalleled information on both the efficacy and tolerance of therapeutic changes. Chest ultrasonography provides further insights into pleural and lung abnormalities associated with ARF, irrespective of its origin. It also allows the assessment of the effects of treatment on lung aeration or pleural effusions. The major limitation of lung ultrasonography is that it is currently based on a qualitative approach in the absence of standardized quantification parameters. CCE combined with chest ultrasonography rapidly provides highly relevant information in patients sustaining ARF. A pragmatic strategy based on the serial use of CCUS for the management of patients presenting with ARF of various origins is detailed in the present manuscript.
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Lamia B, Molano LC, Muir JF, Cuvelier A. [Cardiopulmonary interactions in the course of mechanical ventilation]. Rev Mal Respir 2016; 33:865-876. [PMID: 26857198 DOI: 10.1016/j.rmr.2015.11.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Accepted: 11/15/2015] [Indexed: 10/22/2022]
Abstract
INTRODUCTION The haemodynamic consequences of ventilation are multiple and complex and may affect all the determinants of cardiac performance such as heart rate, preload, contractility and afterload. These consequences affect both right and left ventricle and are also related to the biventricular interdependence. STATE-OF-THE-ART Ventilation modifies the lung volume and also the intrathoracic pressure. Variations in lung volume have consequences on the pulmonary vascular resistance, hypoxic pulmonary vasoconstriction and ventricular interdependence. Variations in intrathoracic pressure have a major impact and affect systemic venous return, right ventricular preload, left ventricular preload, right ventricular afterload, left ventricular afterload and myocardial contracility. The haemodynamic consequences of positive pressure ventilation depend on the underlying chronic cardiopulmonary pathologies leading to the acute respiratory failure that was the indication for ventilation. CONCLUSION In this review, we will focus on severe COPD exacerbation, acute left heart failure and weaning from ventilation.
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Affiliation(s)
- B Lamia
- UPRES EA 3830, service de pneumologie et soins intensifs respiratoires, institut hospitalo-universitaire de recherche biomédicale et d'innovation, CHU de Rouen, université de Rouen, 76031 Rouen cedex, France.
| | - L-C Molano
- UPRES EA 3830, service de pneumologie et soins intensifs respiratoires, institut hospitalo-universitaire de recherche biomédicale et d'innovation, CHU de Rouen, université de Rouen, 76031 Rouen cedex, France
| | - J-F Muir
- UPRES EA 3830, service de pneumologie et soins intensifs respiratoires, institut hospitalo-universitaire de recherche biomédicale et d'innovation, CHU de Rouen, université de Rouen, 76031 Rouen cedex, France
| | - A Cuvelier
- UPRES EA 3830, service de pneumologie et soins intensifs respiratoires, institut hospitalo-universitaire de recherche biomédicale et d'innovation, CHU de Rouen, université de Rouen, 76031 Rouen cedex, France
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Jozwiak M, Teboul JL, Monnet X. Extravascular lung water in critical care: recent advances and clinical applications. Ann Intensive Care 2015; 5:38. [PMID: 26546321 PMCID: PMC4636545 DOI: 10.1186/s13613-015-0081-9] [Citation(s) in RCA: 111] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2015] [Accepted: 10/27/2015] [Indexed: 12/16/2022] Open
Abstract
Extravascular lung water (EVLW) is the amount of fluid that is accumulated in the interstitial and alveolar spaces. In lung oedema, EVLW increases either because of increased lung permeability or because of increased hydrostatic pressure in the pulmonary capillaries, or both. Increased EVLW is always potentially life-threatening, mainly because it impairs gas exchange and reduces lung compliance. The only technique that provides an easy measurement of EVLW at the bedside is transpulmonary thermodilution. The validation of EVLW measurements by thermodilution was based on studies showing reasonable correlations with gravimetry or thermo-dye dilution in experimental and clinical studies. EVLW should be indexed to predicted body weight. This indexation reduces the proportion of ARDS patients for whom EVLW is in the normal range. Compared to non-indexed EVLW, indexed EVLW (EVLWI) is better correlated with the lung injury score and the oxygenation and it is a better predictor of mortality of patients with acute lung injury or acute respiratory distress syndrome (ARDS). Transpulmonary thermodilution also provides the pulmonary vascular permeability index (PVPI), which is an indirect reflection of the integrity of the alveolocapillary barrier. As clinical applications, EVLWI and PVPI may be useful to guide fluid management of patients at risk of fluid overload, as during septic shock and ARDS. High EVLWI and PVPI values predict mortality in several categories of critically ill patients, especially during ARDS. Thus, fluid administration should be limited when EVLWI is already high. Whatever the value of EVLWI, PVPI may indicate that fluid administration is particularly at risk of aggravating lung oedema. In the acute phase of haemodynamic resuscitation during septic shock and ARDS, high EVLWI and PVPI values may warn of the risk of fluid overload and prevent excessive volume expansion. At the post-resuscitation phase, they may prompt initiation of fluid removal thereby achieving a negative fluid balance.
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Affiliation(s)
- Mathieu Jozwiak
- Faculté de Médecine, Université Paris-Sud, Université Paris-Saclay, Le Kremlin Bicêtre, France. .,AP-HP, Service de réanimation médicale, Hôpital de Bicêtre, 78, rue du Général Leclerc, 94270, Le Kremlin-Bicêtre, France. .,Inserm UMR_S 999, Hôpital Marie Lannelongue, Le Plessis-Robinson, France.
| | - Jean-Louis Teboul
- Faculté de Médecine, Université Paris-Sud, Université Paris-Saclay, Le Kremlin Bicêtre, France. .,AP-HP, Service de réanimation médicale, Hôpital de Bicêtre, 78, rue du Général Leclerc, 94270, Le Kremlin-Bicêtre, France. .,Inserm UMR_S 999, Hôpital Marie Lannelongue, Le Plessis-Robinson, France.
| | - Xavier Monnet
- Faculté de Médecine, Université Paris-Sud, Université Paris-Saclay, Le Kremlin Bicêtre, France. .,AP-HP, Service de réanimation médicale, Hôpital de Bicêtre, 78, rue du Général Leclerc, 94270, Le Kremlin-Bicêtre, France. .,Inserm UMR_S 999, Hôpital Marie Lannelongue, Le Plessis-Robinson, France.
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Year in review in Intensive Care Medicine 2014: I. Cardiac dysfunction and cardiac arrest, ultrasound, neurocritical care, ICU-acquired weakness, nutrition, acute kidney injury, and miscellaneous. Intensive Care Med 2015. [PMCID: PMC4315874 DOI: 10.1007/s00134-015-3665-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Passive leg raising performed before a spontaneous breathing trial predicts weaning-induced cardiac dysfunction. Intensive Care Med 2015; 41:487-94. [PMID: 25617264 DOI: 10.1007/s00134-015-3653-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Accepted: 01/09/2015] [Indexed: 12/11/2022]
Abstract
PURPOSE Weaning-induced cardiac dysfunction is more likely to occur if the heart does not tolerate the changes in loading conditions induced by spontaneous breathing trial (SBT). We hypothesized that the presence of cardiac preload independence before an SBT is associated with weaning failure related to cardiac dysfunction. METHODS We included 30 patients after a first failed 1-h T-tube SBT who had a transpulmonary thermodilution already in place. Preload independence [no increase in the pulse contour analysis-derived cardiac index ≥10 % during passive leg raising (PLR)] was assessed before the second SBT. Failure of the SBT related to cardiac dysfunction was defined by an increase in pulmonary artery occlusion pressure above 18 mmHg at the end of the SBT associated with clinical intolerance. RESULTS Fifty-seven SBTs were analyzed. The SBT failed in 46 cases. Overall, 31 failed SBTs were associated with weaning-induced cardiac dysfunction. During PLR, the cardiac index did not change in cases of failed SBTs with cardiac dysfunction, whereas it significantly increased in the other cases: 4 % (interquartile range, IQR 0-5) vs. 12 % (IQR 11-15), respectively. If PLR did not increase the cardiac index by more than 10 % before the SBT, the occurrence of SBT failure related to cardiac dysfunction was predicted with a sensitivity of 97 % [95 % confidence interval (CI) 83-100], specificity of 81 % (95 % CI 61-93) and area under the receiver-operating characteristic curve of 0.88 (95 % CI 0.78-0.98). CONCLUSIONS Preload independence assessed by a negative PLR test performed before an SBT predicts weaning failure related to cardiac dysfunction.
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