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Moscatelli A, Giardina A. The Air-Test, a useful tool for the pediatric anesthesiologist. Minerva Anestesiol 2024; 90:598-600. [PMID: 39021134 DOI: 10.23736/s0375-9393.24.18310-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/20/2024]
Affiliation(s)
- Andrea Moscatelli
- Neonatal and Pediatric ICU, Emergency Department, IRCCS Istituto Giannina Gaslini, Genoa, Italy -
| | - Alberto Giardina
- Neonatal and Pediatric ICU, Emergency Department, IRCCS Istituto Giannina Gaslini, Genoa, Italy
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Bignami E, Guarnieri M, Giambuzzi I, Trumello C, Saglietti F, Gianni S, Belluschi I, Di Tomasso N, Corti D, Alfieri O, Gemma M. Three Logistic Predictive Models for the Prediction of Mortality and Major Pulmonary Complications after Cardiac Surgery. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:1368. [PMID: 37629658 PMCID: PMC10456464 DOI: 10.3390/medicina59081368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 07/15/2023] [Accepted: 07/19/2023] [Indexed: 08/27/2023]
Abstract
Background and Objectives: Pulmonary complications are a leading cause of morbidity after cardiac surgery. The aim of this study was to develop models to predict postoperative lung dysfunction and mortality. Materials and Methods: This was a single-center, observational, retrospective study. We retrospectively analyzed the data of 11,285 adult patients who underwent all types of cardiac surgery from 2003 to 2015. We developed logistic predictive models for in-hospital mortality, postoperative pulmonary complications occurring in the intensive care unit, and postoperative non-invasive mechanical ventilation when clinically indicated. Results: In the "preoperative model" predictors for mortality were advanced age (p < 0.001), New York Heart Association (NYHA) class (p < 0.001) and emergent surgery (p = 0.036); predictors for non-invasive mechanical ventilation were advanced age (p < 0.001), low ejection fraction (p = 0.023), higher body mass index (p < 0.001) and preoperative renal failure (p = 0.043); predictors for postoperative pulmonary complications were preoperative chronic obstructive pulmonary disease (p = 0.007), preoperative kidney injury (p < 0.001) and NYHA class (p = 0.033). In the "surgery model" predictors for mortality were intraoperative inotropes (p = 0.003) and intraoperative intra-aortic balloon pump (p < 0.001), which also predicted the incidence of postoperative pulmonary complications. There were no specific variables in the surgery model predicting the use of non-invasive mechanical ventilation. In the "intensive care unit model", predictors for mortality were postoperative kidney injury (p < 0.001), tracheostomy (p < 0.001), inotropes (p = 0.029) and PaO2/FiO2 ratio at discharge (p = 0.028); predictors for non-invasive mechanical ventilation were kidney injury (p < 0.001), inotropes (p < 0.001), blood transfusions (p < 0.001) and PaO2/FiO2 ratio at the discharge (p < 0.001). Conclusions: In this retrospective study, we identified the preoperative, intraoperative and postoperative characteristics associated with mortality and complications following cardiac surgery.
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Affiliation(s)
- Elena Bignami
- Anesthesiology, Critical Care and Pain Medicine Division, Department of Medicine and Surgery, University of Parma, Viale Gramsci 14, 43126 Parma, Italy;
| | - Marcello Guarnieri
- Department of Anesthesia and Intensive Care, Grande Ospedale Metropolitano Niguarda, 20162 Milan, Italy;
| | - Ilaria Giambuzzi
- Department of Cardiovascular Surgery, Centro Cardiologico Monzino-IRCCS, 20122 Milan, Italy;
- Department of Clinical and Community Sciences, DISCCO University of Milan, 20126 Milan, Italy
| | - Cinzia Trumello
- Department of Cardiac Surgery, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy; (C.T.); (I.B.); (O.A.)
| | - Francesco Saglietti
- Department of Anesthesia and Intensive Care, Azienda Ospedaliera Santa Croce e Carle, 12100 Cuneo, Italy;
| | - Stefano Gianni
- Department of Anesthesia and Intensive Care, Grande Ospedale Metropolitano Niguarda, 20162 Milan, Italy;
| | - Igor Belluschi
- Department of Cardiac Surgery, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy; (C.T.); (I.B.); (O.A.)
| | - Nora Di Tomasso
- Department of Anesthesia and Intensive Care, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy; (N.D.T.); (D.C.)
| | - Daniele Corti
- Department of Anesthesia and Intensive Care, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy; (N.D.T.); (D.C.)
| | - Ottavio Alfieri
- Department of Cardiac Surgery, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy; (C.T.); (I.B.); (O.A.)
| | - Marco Gemma
- Intensive Care Unit, Department of Neurosurgery, Fondazione IRCCS Istituto Neurologico Carlo Besta, 20133 Milan, Italy
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Eremenko AA, Zyulyaeva TP, Alferova AP, Fomina DV, Grekova MS, Grin OO, Dmitrieva SS, Molochkov AV, Gens AP, Kotenko KV. [The use of oscillatory respiratory therapy with positive expiratory pressure (PEP-therapy) to restore the functional state of the lungs in patients after cardiac surgery]. VOPROSY KURORTOLOGII, FIZIOTERAPII, I LECHEBNOI FIZICHESKOI KULTURY 2023; 100:21-30. [PMID: 38289301 DOI: 10.17116/kurort202310006121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/01/2024]
Abstract
Postoperative pulmonary complications in cardiac surgery patients occur in 10-35% of cases, depending on differences in their definition, patient characteristics and type of surgical intervention, most of them are associated with ineffective coughing and evacuation of bronchial secretions. OBJECTIVE To determine the effectiveness of stimulating the evacuation of bronchial secretions with the help of oscillating PEP therapy carried out during the first three days. MATERIAL AND METHODS A randomized prospective study of 60 adult patients after elective cardiac surgery was performed (Clinical Trials.gov. protocol number NCT05159401). Oscillatory PEP-therapy was performed in 30 patients using Acapella DHGreen device (SmithMedicalASD, USA) 10-12 hours after tracheal extubation 3 times a day for 3 days after surgery. The control group (30 patients). The inclusion criteria: age over 18 years, spontaneous breathing after tracheal extubation, clear consciousness and productive contact with the patient, the ability to maintain adequate gas exchange on the low-flow oxygen inhalation, adequate analgesia (<2 points of VAS). Exclusion criteria: the need for re-intubation and mechanical ventilation, non-invasive mask ventilation, high-flow oxygen therapy, acute cerebrovascular accident, ongoing bleeding, cardiac insufficiency (inotropic index >10), shocks syndrome of various etiologies, the use of any extracorporeal support, any neuromuscular disorders, pneumothorax, hydro-or hemothorax. Before each session and 20 minutes after its end, when breathing air, blood oxygen saturation was recorded using a pulse oximeter (SpO2), the maximum inspiratory capacity (MIC) was measured using a Coach-2 incentive spirometer from SmithsMedical and spirometry with a portable ultrasonic spirometer Spiro Scout (Schiller, Switzerland). For the purposes of this work, the total index of the spirometry maximum inspiratory capacity (SMIC) was used - the sum of the respiratory volume and the reserve volume of inspiration in ml. RESULTS Difficulties in evacuation of sputum were noted in 90% of patients. Three-day sessions of oscillating PEP- therapy are accompanied by a significant improvement in the passage of sputum, as evidenced by a 3-fold increase in the number of patients with productive cough. The increase in MIC in the main group was 46.9% and 21.3%, respectively (p=0.042), and the number of patients with values greater than MICo. 1500 ml increased from 23.3% to 7.6% (p<0.001). The effectiveness of oscillatory PEP-therapy is confirmed by a 7-fold decrease in the frequency of radiological changes in the lungs at the end of sessions (p<0.001), while in the control group the frequency of their occurrence practically did not change and remained at a high level. The total number of patients with respiratory insufficiency (SpO2≤92%) decreased by 8.6 times after completion of all PEP- therapy sessions (p=0.001), however, without statistically significant difference with the control group. CONCLUSIONS Oscillatory PEP- therapy in cardiac surgery patients has a positive effect on sputum passage, ventilation parameters and oxygenating lung function. The procedure was well tolerated and there were no complications associated with it.
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Affiliation(s)
- A A Eremenko
- B.V. Petrovsky National Research Centre of Surgery, Moscow, Russia
| | - T P Zyulyaeva
- B.V. Petrovsky National Research Centre of Surgery, Moscow, Russia
| | - A P Alferova
- B.V. Petrovsky National Research Centre of Surgery, Moscow, Russia
| | - D V Fomina
- B.V. Petrovsky National Research Centre of Surgery, Moscow, Russia
| | - M S Grekova
- B.V. Petrovsky National Research Centre of Surgery, Moscow, Russia
| | - O O Grin
- B.V. Petrovsky National Research Centre of Surgery, Moscow, Russia
| | - S S Dmitrieva
- B.V. Petrovsky National Research Centre of Surgery, Moscow, Russia
| | - A V Molochkov
- B.V. Petrovsky National Research Centre of Surgery, Moscow, Russia
| | - A P Gens
- B.V. Petrovsky National Research Centre of Surgery, Moscow, Russia
| | - K V Kotenko
- B.V. Petrovsky National Research Centre of Surgery, Moscow, Russia
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Kumar A, Joshi S, Tiwari N, Kumar V, Ramamurthy H, Kumar G, Sharma V. Comparative evaluation of high-flow nasal cannula oxygenation vs nasal intermittent ventilation in postoperative paediatric patients operated for acyanotic congenital cardiac defects. Med J Armed Forces India 2022; 78:454-462. [PMID: 36267502 PMCID: PMC9577337 DOI: 10.1016/j.mjafi.2021.07.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Accepted: 07/03/2021] [Indexed: 10/20/2022] Open
Abstract
Background This study aimed to compare high-flow nasal cannula (HFNC) oxygenation vs nasal intermittent ventilation (NIV) oxygenation for respiratory care after extubation in postoperative paediatric cardiac patients. Methods This study was a randomised controlled trial. One hundred twenty-one paediatric patients with acyanotic congenital heart disease undergoing corrective cardiac surgery on cardiopulmonary bypass were included in the study. Patients were randomised to receive either HFNC (AIRVO) or NIV (RAM Cannula) postextubation. Arterial blood gas was analysed at different time points perioperatively. Results Patients in both the groups were matched with respect to diagnosis and demographic profiles. Baseline hemodynamic and respiratory parameters were also similar in both the groups. Patients in HFNC/AIRVO group did not show improved carbon dioxide (CO2) washout but showed improved pO2 and pO2/FiO2 ratio immediate postextubation. Reintubation rate and other intensive care unit (ICU) complications were similar in both the groups. Conclusion Postcardiopulmonary bypass respiratory complications in paediatric patients with congenital acyanotic heart disease can be minimised with newer oxygen therapy devices such as AIRVO (HFNC) or RAM cannula (NIV). In comparison between these two, AIRVO did not show improved CO2 washout over RAM cannula; however, it did provide better oxygenation as measured by pO2 in arterial blood and pO2/FiO2 ratio immediate postextubation. Also, long-term results such as duration of mechanical ventilation and ICU stay were not affected by the choice of device.
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Affiliation(s)
- Alok Kumar
- Classified Specialist (Anaesthesia & Cardio-Thoracic Anaesthesia), Army Hospital (R&R), New Delhi, India
| | - Saajan Joshi
- Senior Advisor (Anaesthesia) & Trained in Paediatric Anaesthesia, Army Hospital (R&R), New Delhi, India
| | - Nikhil Tiwari
- Senior Advisor (Surgery) & Cardio-Thoracic Surgeon, Army Hospital (R&R), New Delhi, India
| | - Vivek Kumar
- Classified Specialist (Paediatric) & Trained in Paediatric Cardiology, Army Hospital (R&R), New Delhi, India
| | - H.R. Ramamurthy
- Senior Advisor (Paediatric) & Trained in Paediatric Cardiology, Army Hospital (R&R), New Delhi, India
| | - Gaurav Kumar
- Senior Consultant (Paediatric Cardiac Surgery), Fortis Hospital, Delhi, India
| | - Vipul Sharma
- Professor (Cardiac Anaesthesia), Dr. D.Y. Patil Medical College, Pune, India
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Sun Y, Deng XM, Cai Y, Shen SE, Dong LY. Post-cardiopulmonary bypass hypoxaemia in paediatric patients undergoing congenital heart disease surgery: risk factors, features, and postoperative pulmonary complications. BMC Cardiovasc Disord 2022; 22:430. [PMID: 36180821 PMCID: PMC9523995 DOI: 10.1186/s12872-022-02838-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Accepted: 08/29/2022] [Indexed: 11/12/2022] Open
Abstract
Background Hypoxemia after cardiopulmonary bypass (CPB) is the quantifiable manifestation of pulmonary dysfunction. This retrospective study was designed to investigate the risk factors for post-cardiopulmonary bypass hypoxaemia and the features of hypoxaemia and pulmonary complications in paediatric congenital heart disease surgery involving CPB. Methods Data including demographics, preoperative pulmonary or cardiac parameters, and intraoperative interventions were retrospectively collected from 318 paediatric patients who underwent radical surgery with CPB for congenital heart disease. Among them, the factors that were significant by univariate analysis were screened for multivariate Cox regression. The lowest ratio of arterial oxygen tension and the inspiratory oxygen fraction (PaO2/FiO2), hypoxaemia (PaO2/FiO2 ≤ 300) insult time, duration of hypoxaemia, extubation time, and pulmonary complications were also analysed postoperatively. Results The morbidity of post-cardiopulmonary bypass hypoxaemia was 48.4% (154/318). Months (6 < months ≤ 12, 12 < months ≤ 36 and 36 < months compared with 0 ≤ months ≤ 6: HR 0.582, 95% CI 0.388–0.873; HR 0.398, 95% CI 0.251–0.632; HR 0.336, 95% CI 0.197–0.574, respectively; p < 0.01), preoperative intracardiac right-to-left shunting (HR 1.729, 95% CI 1.200–2.493, p = 0.003) and intraoperative pleural cavity entry (HR 1.582, 95% CI 1.128–2.219, p = 0.008) were identified as independent risk factors for the development of post-cardiopulmonary bypass hypoxaemia. Most hypoxaemia cases (83.8%, 129/154) occurred within 2 h, and the rate of moderate hypoxaemia (100 < PaO2/FiO2 ≤ 200) was 60.4% (93/154). Conclusion The morbidity of post-cardiopulmonary bypass hypoxaemia in paediatric congenital heart disease surgery was considerably high. Most hypoxaemia cases were moderate and occurred in the early period after CPB. Scrupulous management should be employed for younger infants or children with preoperative intracardiac right-to-left shunting or intraoperative pleural cavity entry.
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Affiliation(s)
- Yuan Sun
- Department of Anesthesiology and Critical Care Medicine, Xin Hua Hospital, Jiaotong University School of Medicine, No. 1665 Kongjiang Rd., Shanghai, 200092, China
| | - Xiao-Ming Deng
- Department of Anesthesiology and Intensive Care Medicine, Changhai Hospital affiliated to Naval Medical University, Shanghai, 200438, China
| | - Ying Cai
- Department of Anesthesiology and Critical Care Medicine, Xin Hua Hospital, Jiaotong University School of Medicine, No. 1665 Kongjiang Rd., Shanghai, 200092, China
| | - Sai-E Shen
- Department of Anesthesiology and Critical Care Medicine, Xin Hua Hospital, Jiaotong University School of Medicine, No. 1665 Kongjiang Rd., Shanghai, 200092, China.
| | - Li-Ya Dong
- Department of Cardiothoracic Surgery, Xin Hua Hospital, Jiaotong University School of Medicine, No. 1665 Kongjiang Rd., Shanghai, 20092, China.
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Jangid SK, Makhija N, Chauhan S, Das S. COMPARISON OF CHANGES IN THORACIC FLUID CONTENT BETWEEN ON-PUMP AND OFF-PUMP CABG BY USE OF ELECTRICAL CARDIOMETRY. J Cardiothorac Vasc Anesth 2022; 36:3791-3799. [DOI: 10.1053/j.jvca.2022.06.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/23/2022] [Revised: 05/18/2022] [Accepted: 06/05/2022] [Indexed: 11/11/2022]
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Rosén J, Frykholm P, Fors D. Effect of high‐flow nasal oxygen on postoperative oxygenation in obese patients: A randomized controlled trial. Health Sci Rep 2022; 5:e616. [PMID: 35509395 PMCID: PMC9059212 DOI: 10.1002/hsr2.616] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Revised: 03/12/2022] [Accepted: 04/01/2022] [Indexed: 11/13/2022] Open
Abstract
Background and Aim Postoperative hypoxemia is common after general anesthesia in obese patients. We investigated if early application of high‐flow nasal oxygen (HFNO) improved postoperative oxygenation in obese patients compared with standard oxygen therapy following general anesthesia for laparoscopic bariatric surgery. Methods This was an open labeled randomized controlled trial conducted at a university hospital in Sweden between October 23, 2018 and February 11, 2020. The study was performed as a substudy within a previously published trial. After ethics committee approval and written informed consent, 40 obese patients (body mass index [BMI] ≥ 35 kg m−2) scheduled for laparoscopic bariatric surgery were randomized to receive oxygen using a standard low‐flow nasal cannula (NC group) or HFNO at 40 L min−1 (HF group) immediately upon arrival to the post‐anesthesia care unit. Flow rate (NC group) or FiO2 (HF group) was titrated to reach an initial SpO2 of 95%–98% after which settings were left unchanged. The primary outcome was PaO2 at 60 min following postoperative baseline values. Secondary outcomes included PaCO2, SpO2, hemodynamic variables, and patient self‐assessed discomfort. Results Thirty‐four patients were available for analysis. PaO2 was similar between groups at postoperative baseline. After 60 min, PaO2 had increased to 12.6 ± 2.8 kPa in the NC group (n = 15) and 14.0 ± 2.7 kPa in the HF group (n = 19); (mean difference 1.4 kPa, 95% confidence interval −0.6 to 3.3; p = 0.16). There were no differences in PaCO2, hemodynamic variables, or self‐assessed discomfort between groups after 60 min. Conclusion In obese patients, HFNO did not improve postoperative short‐term oxygenation compared with standard low‐flow oxygen following general anesthesia for laparoscopic bariatric surgery.
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Affiliation(s)
- Jacob Rosén
- Department of Surgical Sciences, Section of Anaesthesiology and Intensive Care Medicine Uppsala University Uppsala Sweden
| | - Peter Frykholm
- Department of Surgical Sciences, Section of Anaesthesiology and Intensive Care Medicine Uppsala University Uppsala Sweden
| | - Diddi Fors
- Department of Surgical Sciences, Section of Anaesthesiology and Intensive Care Medicine Uppsala University Uppsala Sweden
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Lagier D, Zeng C, Fernandez-Bustamante A, Melo MFV. Perioperative Pulmonary Atelectasis: Part II. Clinical Implications. Anesthesiology 2022; 136:206-236. [PMID: 34710217 PMCID: PMC9885487 DOI: 10.1097/aln.0000000000004009] [Citation(s) in RCA: 50] [Impact Index Per Article: 25.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The development of pulmonary atelectasis is common in the surgical patient. Pulmonary atelectasis can cause various degrees of gas exchange and respiratory mechanics impairment during and after surgery. In its most serious presentations, lung collapse could contribute to postoperative respiratory insufficiency, pneumonia, and worse overall clinical outcomes. A specific risk assessment is critical to allow clinicians to optimally choose the anesthetic technique, prepare appropriate monitoring, adapt the perioperative plan, and ensure the patient's safety. Bedside diagnosis and management have benefited from recent imaging advancements such as lung ultrasound and electrical impedance tomography, and monitoring such as esophageal manometry. Therapeutic management includes a broad range of interventions aimed at promoting lung recruitment. During general anesthesia, these strategies have consistently demonstrated their effectiveness in improving intraoperative oxygenation and respiratory compliance. Yet these same intraoperative strategies may fail to affect additional postoperative pulmonary outcomes. Specific attention to the postoperative period may be key for such outcome impact of lung expansion. Interventions such as noninvasive positive pressure ventilatory support may be beneficial in specific patients at high risk for pulmonary atelectasis (e.g., obese) or those with clinical presentations consistent with lung collapse (e.g., postoperative hypoxemia after abdominal and cardiothoracic surgeries). Preoperative interventions may open new opportunities to minimize perioperative lung collapse and prevent pulmonary complications. Knowledge of pathophysiologic mechanisms of atelectasis and their consequences in the healthy and diseased lung should provide the basis for current practice and help to stratify and match the intensity of selected interventions to clinical conditions.
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Affiliation(s)
- David Lagier
- Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Congli Zeng
- Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | | | - Marcos F. Vidal Melo
- Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
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Abstract
Acute respiratory failure occurs when the lungs fail to oxygenate arterial blood adequately and it is one of the commonest postoperative complications. The preoperative identification of risk factors for postoperative acute respiratory failure allows identification of those patients who may benefit from preoperative optimization and increased postoperative vigilance. Multiple postoperative pulmonary complications are associated with acute hypoxemic respiratory failure and this chapter discusses atelectasis, pulmonary embolism, aspiration, and acute respiratory distress syndrome in detail, as well as providing a unified clinical approach to the acutely hypoxemic perioperative patient.
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Abstract
Pulmonary atelectasis is common in the perioperative period. Physiologically, it is produced when collapsing forces derived from positive pleural pressure and surface tension overcome expanding forces from alveolar pressure and parenchymal tethering. Atelectasis impairs blood oxygenation and reduces lung compliance. It is increasingly recognized that it can also induce local tissue biologic responses, such as inflammation, local immune dysfunction, and damage of the alveolar-capillary barrier, with potential loss of lung fluid clearance, increased lung protein permeability, and susceptibility to infection, factors that can initiate or exaggerate lung injury. Mechanical ventilation of a heterogeneously aerated lung (e.g., in the presence of atelectatic lung tissue) involves biomechanical processes that may precipitate further lung damage: concentration of mechanical forces, propagation of gas-liquid interfaces, and remote overdistension. Knowledge of such pathophysiologic mechanisms of atelectasis and their consequences in the healthy and diseased lung should guide optimal clinical management.
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Cooney SJ, Klawitter J, Khailova L, Robison J, Jaggers J, Ing RJ, Lawson S, Frank BS, Lujan SO, Davidson JA. Regional lung metabolic profile in a piglet model of cardiopulmonary bypass with circulatory arrest. Metabolomics 2021; 17:89. [PMID: 34553313 PMCID: PMC8457331 DOI: 10.1007/s11306-021-01842-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 09/14/2021] [Indexed: 01/14/2023]
Abstract
INTRODUCTION Acute lung injury is common following cardiopulmonary bypass and deep hypothermic circulatory arrest for congenital heart surgery with the most severe injury in the dorsocaudal lung. Metabolomics offers promise in deducing mechanisms of disease states, providing risk stratification, and understanding therapeutic responses in regards to CPB/DHCA related organ injury. OBJECTIVES Using an infant porcine model, we sought to determine the individual and additive effects of CPB/DHCA and lung region on the metabolic fingerprint, metabolic pathways, and individual metabolites in lung tissue. METHODS Twenty-seven infant piglets were divided into two groups: mechanical ventilation + CPB/DHCA (n = 20) and mechanical ventilation only (n = 7). Lung tissue was obtained from dorsocaudal and ventral regions. Targeted analysis of 235 metabolites was performed using HPLC/MS-MS. Data was analyzed using Principal Component Analysis (PCA), Partial Least Square Discriminant Analysis (PLS-DA), ANOVA, and pathway analysis. RESULTS Profound metabolic differences were found in dorsocaudal compared to ventral lung zones by PCA and PLS-DA (R2 = 0.7; Q2 = 0.59; p < 0.0005). While overshadowed by the regional differences, some differences by exposure to CPB/DHCA were seen as well. Seventy-four metabolites differed among groups and pathway analysis revealed 20 differential metabolic pathways. CONCLUSION Our results demonstrate significant metabolic disturbances between dorsocaudal and ventral lung regions during supine mechanical ventilation with or without CPB/DHCA. CPB/DHCA also leads to metabolic differences and may have additive effects to the regional disturbances. Most pathways driving this pathology are involved in energy metabolism and the metabolism of amino acids, carbohydrates, and reduction-oxidation pathways.
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Affiliation(s)
- Sean J Cooney
- Department of Pediatrics, University of Colorado School of Medicine, Aurora, CO, USA
| | - Jelena Klawitter
- Department of Anesthesiology, University of Colorado, Aurora, CO, USA
| | - Ludmilla Khailova
- Department of Pediatrics, University of Colorado School of Medicine, Aurora, CO, USA
| | - Justin Robison
- Department of Pediatrics, University of Colorado School of Medicine, Aurora, CO, USA
| | - James Jaggers
- Department of Surgery, University of Colorado, Aurora, CO, USA
| | - Richard J Ing
- Department of Anesthesiology, University of Colorado, Aurora, CO, USA
| | - Scott Lawson
- Heart Institute, Children's Hospital Colorado, Aurora, CO, USA
| | - Benjamin S Frank
- Department of Pediatrics, University of Colorado School of Medicine, Aurora, CO, USA
| | - Suzanne Osorio Lujan
- Department of Pediatrics, University of Colorado School of Medicine, Aurora, CO, USA
| | - Jesse A Davidson
- Department of Pediatrics, University of Colorado School of Medicine, Aurora, CO, USA.
- Children's Hospital Colorado, 13123 East 16th Avenue, Box 100, Aurora, CO, 80045, USA.
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He P, Wu C, Yang Y, Zheng J, Dong W, Wu J, Sun Y, Zhang M. Effectiveness of postural lung recruitment on postoperative atelectasis assessed by lung ultrasound in children undergoing lateral thoracotomy cardiac surgery with cardiopulmonary bypass. Pediatr Pulmonol 2021; 56:1724-1732. [PMID: 33580585 DOI: 10.1002/ppul.25315] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 01/05/2021] [Accepted: 02/08/2021] [Indexed: 12/12/2022]
Abstract
OBJECTIVES To assess the effects of postural lung recruitment maneuvers on the postoperative atelectasis assessed by lung ultrasound (LUS) compared with supine position recruitment maneuvers in children undergoing right lateral thoracotomy cardiac surgery with cardiopulmonary bypass. METHODS In this randomized and controlled trial, 84 patients aged 3 years or younger, scheduled for right lateral thoracotomy cardiac surgery with cardiopulmonary bypass (CPB) were randomly allocated to postural lung recruitment group or control group. The first LUS exam was performed immediately upon completion of the cardiac surgery (T1), and a repeat ultrasound exam started 1 min after lung recruitment maneuvers (T2). The primary outcome was the incidence of significant atelectasis at T2. RESULTS The incidence of significant atelectasis at T2 in the postural lung recruitment maneuver group was lower compared with that in the control group (30.2% vs. 58.1%; odds ratio: 0.31; 95% confidence interval: 0.13-0.76; p = .009). The LUS scores for consolidations and B-lines of the left lung were higher than those of the right lung in both groups at T1. More significant reduction of the left LUS scores and sizes of atelectatic areas were found in the postural lung recruitment group than those in the control group. CONCLUSIONS Postoperative postural recruitment maneuver was more effective to improve reaeration of lung than supine position recruitment maneuver in children undergoing right lateral thoracotomy cardiac surgery with CPB.
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Affiliation(s)
- Pan He
- Department of Anesthesiology, School of Medicine, Shanghai Children's Medical Centre, Shanghai Jiao Tong University, Shanghai, China
| | - Chi Wu
- Department of Anesthesiology, School of Medicine, Shanghai Children's Medical Centre, Shanghai Jiao Tong University, Shanghai, China
| | - Yanyan Yang
- Department of Anesthesiology, School of Medicine, Shanghai Children's Medical Centre, Shanghai Jiao Tong University, Shanghai, China
| | - Jijian Zheng
- Department of Anesthesiology, School of Medicine, Shanghai Children's Medical Centre, Shanghai Jiao Tong University, Shanghai, China
| | - Wei Dong
- Department of Cardio-Thoracic Surgery, School of Medicine, Shanghai Children's Medical Centre, Shanghai Jiao Tong University, Shanghai, China
| | - Junzheng Wu
- Cincinnati Children's Hospital Medical Centre, Cincinnati, Ohio, USA
| | - Ying Sun
- Department of Anesthesiology, School of Medicine, Shanghai Children's Medical Centre, Shanghai Jiao Tong University, Shanghai, China
| | - Mazhong Zhang
- Department of Anesthesiology, School of Medicine, Shanghai Children's Medical Centre, Shanghai Jiao Tong University, Shanghai, China
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Koutsogiannaki S, Huang SX, Lukovits K, Kim S, Bernier R, Odegard KC, Yuki K. The Characterization of Postoperative Mechanical Respiratory Requirement in Neonates and Infants Undergoing Cardiac Surgery on Cardiopulmonary Bypass in a Single Tertiary Institution. J Cardiothorac Vasc Anesth 2021; 36:215-221. [PMID: 34023203 DOI: 10.1053/j.jvca.2021.04.023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 03/28/2021] [Accepted: 04/16/2021] [Indexed: 11/11/2022]
Abstract
OBJECTIVES Although neonates and infants undergoing cardiac surgery on cardiopulmonary bypass (CPB) are at high risk of developing perioperative morbidity and mortality, including lung injury, the intraoperative profile of lung injury in this cohort is not well-described. Given that the postoperative course of patients in the pediatric cardiac surgical arena has become increasingly expedited, the objective of this study was to characterize the profiles of postoperative mechanical ventilatory support in neonates and infants undergoing cardiac surgery on CPB and to examine the characteristics of lung mechanics and lung injury in this patient population who are potentially amendable to early postoperative recovery in a single tertiary pediatric institution. DESIGN A retrospective data analysis of neonates and infants who underwent cardiac surgery on cardiopulmonary bypass. SETTING A single-center, university teaching hospital. PARTICIPANTS The study included 328 neonates and infants who underwent cardiac surgery on cardiopulmonary bypass. INTERVENTIONS A subset of 128 patients were studied: 58 patients undergoing ventricular septal defect (VSD) repair, 36 patients undergoing complete atrioventricular canal (CAVC) repair, and 34 patients undergoing bidirectional Glenn (BDG) shunt surgery. MEASUREMENTS AND MAIN RESULTS Of the entire cohort, 3.7% experienced in-hospital mortality. Among all surgical procedures, VSD repair (17.7%) was the most common, followed by CAVC repair (11.0%) and BDG shunt surgery (10.4%). Of patients who underwent VSD repair, CAVC repair, and BDG shunt surgery, 65.5%, 41.7%, and 67.6% were off mechanical ventilatory support within 24 hours postoperatively, respectively. In all three of the surgical repairs, lung compliance decreased after CPB compared to pre-CPB phase. Sixty point three percent of patients with VSD repair and 77.8% of patients with CAVC repair showed a PaO2/FIO2 (P/F) ratio of <300 after CPB. Post- CPB P/F ratios of 120 for VSD patients and 100 for CAVC patients were considered as optimal cutoff values to highly predict prolonged (>24 hours) postoperative mechanical ventilatory support. A higher volume of transfused platelets also was associated with postoperative ventilatory support ≥24 hours in patients undergoing VSD repair, CAVC repair, and BDG shunt surgery. CONCLUSIONS There was a high incidence of lung injury after CPB in neonates and infants, even in surgeries amendable for early recovery. Given that CPB-related factors (CPB duration, crossclamp time) and volume of transfused platelet were significantly associated with prolonged postoperative ventilatory support, the underlying cause of cardiac surgery-related lung injury can be multi-factorial.
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Affiliation(s)
- Sophia Koutsogiannaki
- Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA; Department of Immunology, Harvard Medical School, Boston, MA
| | - Sheng Xiang Huang
- Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA
| | - Karina Lukovits
- Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA
| | - Samuel Kim
- Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA
| | - Rachel Bernier
- Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA
| | - Kirsten C Odegard
- Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA
| | - Koichi Yuki
- Department of Anesthesiology, Critical Care and Pain Medicine, Boston Children's Hospital, Harvard Medical School, Boston, MA; Department of Immunology, Harvard Medical School, Boston, MA.
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Eremenko AA, Ryabova DV, Komnov RD, Chervinskaya AV. [Effectiveness and safety evaluation of a cough stimulation device in early postoperative respiratory rehabilitation in cardiac surgery patients]. VOPROSY KURORTOLOGII, FIZIOTERAPII, I LECHEBNOI FIZICHESKOI KULTURY 2021; 98:17-24. [PMID: 34965710 DOI: 10.17116/kurort20219806217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
UNLABELLED Postoperative respiratory complications in cardiac surgery patients occur in 22-30% of cases, mostly associated with ineffective cough and evacuation of bronchial secretion. OBJECTIVE To evaluate the effectiveness and safety of cough stimulation using the mechanical in- and exsufflator in the early postoperative period in cardiac surgery patients. MATERIAL AND METHODS The study included 37 patients; mean age was 57±12.3 years. Inclusion criteria: age over 18 years; post-extubation spontaneous breathing; fully conscious and cooperative; adequate gas exchange with oxygen therapy; adequate pain control (2 points or less on 10-point visual analogue scale). Exclusion criteria: need for re-intubation and mechanical ventilation; noninvasive mask ventilation; high-flow oxygen therapy; acute cerebrovascular event; uncontrolled bleeding; heart failure (inotropic score over 10); shock; need of extracorporeal blood purification; neuromuscular disease; pneumothorax, hydro- or hemothorax. Cough stimulation was performed using the mechanical in- and exsufflator Comfort Cough Plus («Seoil Pacific Corporation», Republic of Korea). The device provides cough stimulation after high-frequency vibrations transmitted through a special vest and lung tissue recruiting by changing the airways pressure of the gas mixture, delivered through the anesthesia face mask. RESULTS Cough stimulation device use was associated with an increase in the cough effectiveness; the number of patients with productive cough increased 8-fold, from 4 (10.8%) to 32 (86.4%), p=0.0000. The increase of blood oxygen saturation (SpO2) on room air from 92% to 96% (p=0.000001) and inspiratory capacity (IC) from 750 mL to 1200 mL (p=0.000002) was observed. The number of patients with IC of 1200-1500 mL increased 3-fold, and those with an IC over 1500 mL increased 2.6-fold. The proportion of patients with low oxygenation (SpO2 less than 92%) decreased 5-fold after the procedure (p=0.0011). Good tolerability and no side effects of the procedure were noted in all patients. CONCLUSION Impaired sputum expectoration early after cardiac surgery is observed in most patients and may cause low oxygenation. The main effects of the cough stimulation device were improvement of sputum expectoration and an increase in oxygenation. An increase in blood oxygen saturation and inspiratory capacity after a single procedure with this device was demonstrated. It resulted in a significantly decreased proportion of patients with respiratory insufficiency. No adverse effects of the procedure were observed.
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Affiliation(s)
- A A Eremenko
- Russian scientific center for surgery named after academician B.V. Petrovsky, Moscow, Russia
| | - D V Ryabova
- Russian scientific center for surgery named after academician B.V. Petrovsky, Moscow, Russia
| | - R D Komnov
- Russian scientific center for surgery named after academician B.V. Petrovsky, Moscow, Russia
| | - A V Chervinskaya
- Russian scientific center for surgery named after academician B.V. Petrovsky, Moscow, Russia
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Hinoshita T, Ribeiro GM, Winkler T, de Prost N, Tucci MR, Costa ELV, Wellman TJ, Hashimoto S, Zeng C, Carvalho AR, Melo MFV. Inflammatory Activity in Atelectatic and Normally Aerated Regions During Early Acute Lung Injury. Acad Radiol 2020; 27:1679-1690. [PMID: 32173290 DOI: 10.1016/j.acra.2019.12.022] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 12/07/2019] [Accepted: 12/14/2019] [Indexed: 11/15/2022]
Abstract
RATIONALE AND OBJECTIVES Pulmonary atelectasis presumably promotes and facilitates lung injury. However, data are limited on its direct and remote relation to inflammation. We aimed to assess regional 2-deoxy-2-[18F]-fluoro-D-glucose (18F-FDG) kinetics representative of inflammation in atelectatic and normally aerated regions in models of early lung injury. MATERIALS AND METHODS We studied supine sheep in four groups: Permissive Atelectasis (n = 6)-16 hours protective tidal volume (VT) and zero positive end-expiratory pressure; Mild (n = 5) and Moderate Endotoxemia (n = 6)- 20-24 hours protective ventilation and intravenous lipopolysaccharide (Mild = 2.5 and Moderate = 10.0 ng/kg/min), and Surfactant Depletion (n = 6)-saline lung lavage and 4 hours high VT. Measurements performed immediately after anesthesia induction served as controls (n = 8). Atelectasis was defined as regions of gas fraction <0.1 in transmission or computed tomography scans. 18F-FDG kinetics measured with positron emission tomography were analyzed with a three-compartment model. RESULTS 18F-FDG net uptake rate in atelectatic tissue was larger during Moderate Endotoxemia (0.0092 ± 0.0019/min) than controls (0.0051 ± 0.0014/min, p = 0.01). 18F-FDG phosphorylation rate in atelectatic tissue was larger in both endotoxemia groups (0.0287 ± 0.0075/min) than controls (0.0198 ± 0.0039/min, p = 0.05) while the 18F-FDG volume of distribution was not significantly different among groups. Additionally, normally aerated regions showed larger 18F-FDG uptake during Permissive Atelectasis (0.0031 ± 0.0005/min, p < 0.01), Mild (0.0028 ± 0.0006/min, p = 0.04), and Moderate Endotoxemia (0.0039 ± 0.0005/min, p < 0.01) than controls (0.0020 ± 0.0003/min). CONCLUSION Atelectatic regions present increased metabolic activation during moderate endotoxemia mostly due to increased 18F-FDG phosphorylation, indicative of increased cellular metabolic activation. Increased 18F-FDG uptake in normally aerated regions during permissive atelectasis suggests an injurious remote effect of atelectasis even with protective tidal volumes.
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Affiliation(s)
- Takuga Hinoshita
- Massachusetts General Hospital, Department of Anesthesia, Critical Care and Pain Medicine, 55 Fruit St. Boston, MA; Tokyo Medical and Dental University, Department of Intensive Care Medicine, Tokyo, Japan.
| | | | - Tilo Winkler
- Massachusetts General Hospital, Department of Anesthesia, Critical Care and Pain Medicine, 55 Fruit St. Boston, MA
| | - Nicolas de Prost
- Hôpital Henri Mondor, Medical Intensive Care Unit, Créteil, France
| | - Mauro R Tucci
- Hospital das Clínicas, Faculdade de Medicina, São Paulo, Brasil
| | | | | | - Soshi Hashimoto
- Kyoto Okamoto Memorial Hospital, Department of Anesthesiology, Kyoto, Japan
| | - Congli Zeng
- Massachusetts General Hospital, Department of Anesthesia, Critical Care and Pain Medicine, 55 Fruit St. Boston, MA; The First Affiliated Hospital, Department of Anesthesiology and Intensive Care, Zhejiang Sheng, China
| | - Alysson R Carvalho
- Carlos Chagas Filho Institute of Biophysics, Laboratory of Respiration Physiology, Rio de Janeiro, Brazil
| | - Marcos Francisco Vidal Melo
- Massachusetts General Hospital, Department of Anesthesia, Critical Care and Pain Medicine, 55 Fruit St. Boston, MA
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Perioperative Open-lung Approach, Regional Ventilation, and Lung Injury in Cardiac Surgery. Anesthesiology 2020; 133:1029-1045. [PMID: 32902561 DOI: 10.1097/aln.0000000000003539] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
BACKGROUND In the Protective Ventilation in Cardiac Surgery (PROVECS) randomized, controlled trial, an open-lung ventilation strategy did not improve postoperative respiratory outcomes after on-pump cardiac surgery. In this prespecified subanalysis, the authors aimed to assess the regional distribution of ventilation and plasma biomarkers of lung epithelial and endothelial injury produced by that strategy. METHODS Perioperative open-lung ventilation consisted of recruitment maneuvers, positive end-expiratory pressure (PEEP) = 8 cm H2O, and low-tidal volume ventilation including during cardiopulmonary bypass. Control ventilation strategy was a low-PEEP (2 cm H2O) low-tidal volume approach. Electrical impedance tomography was used serially throughout the perioperative period (n = 56) to compute the dorsal fraction of ventilation (defined as the ratio of dorsal tidal impedance variation to global tidal impedance variation). Lung injury was assessed serially using biomarkers of epithelial (soluble form of the receptor for advanced glycation end-products, sRAGE) and endothelial (angiopoietin-2) lung injury (n = 30). RESULTS Eighty-six patients (age = 64 ± 12 yr; EuroSCORE II = 1.65 ± 1.57%) undergoing elective on-pump cardiac surgery were studied. Induction of general anesthesia was associated with ventral redistribution of tidal volumes and higher dorsal fraction of ventilation in the open-lung than the control strategy (0.38 ± 0.07 vs. 0.30 ± 0.10; P = 0.004). No effect of the open-lung strategy on the dorsal fraction of ventilation was noted at the end of surgery after median sternotomy closure (open-lung = 0.37 ± 0.09 vs. control = 0.34 ± 0.11; P = 0.743) or in extubated patients at postoperative day 2 (open-lung = 0.63 ± 0.18 vs. control = 0.59 ± 0.11; P > 0.999). Open-lung ventilation was associated with increased intraoperative plasma sRAGE (7,677 ± 3,097 pg/ml vs. 6,125 ± 1,400 pg/ml; P = 0.037) and had no effect on angiopoietin-2 (P > 0.999). CONCLUSIONS In cardiac surgery patients, open-lung ventilation provided larger dorsal lung ventilation early during surgery without a maintained benefit as compared with controls at the end of surgery and postoperative day 2 and was associated with higher intraoperative plasma concentration of sRAGE suggesting lung overdistension. EDITOR’S PERSPECTIVE
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17
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Ferrando C, Suárez-Sipmann F, Librero J, Pozo N, Soro M, Unzueta C, Brunelli A, Peiró S, Llombart A, Balust J, Aldecoa C, Díaz-Cambronero O, Franco T, Redondo FJ, Garutti I, García JI, Ibáñez M, Granell M, Rodríguez A, Gallego L, de la Matta M, Marcos JM, García J, Mazzinari G, Tusman G, Villar J, Belda J. A noninvasive postoperative clinical score to identify patients at risk for postoperative pulmonary complications: the Air-Test Score. Minerva Anestesiol 2020; 86:404-415. [DOI: 10.23736/s0375-9393.19.13932-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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18
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Hussain NS, Metry AA, Nakhla GM, Wahba RM, Ragaei MZ, Bestarous JN. Comparative Study between Different Modes of Ventilation during Cardiopulmonary Bypass and its Effect on Postoperative Pulmonary Dysfunction. Anesth Essays Res 2019; 13:236-242. [PMID: 31198237 PMCID: PMC6545959 DOI: 10.4103/aer.aer_48_19] [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: 11/05/2022] Open
Abstract
Background: Postoperative pulmonary dysfunction is a prevalent complication after cardiac surgery; it has many contributing considerations due to either the surgery itself, anomalies to gas exchange or maybe as a result of alterations in lung mechanics. The aim of this study was to compare pressure-controlled ventilation versus volume-controlled ventilation in the presence of no ventilation group as a control group during cardiopulmonary bypass and its effect on postoperative pulmonary dysfunction. Patients and Methods: Sixty-six patients going through open-heart surgeries were included in the study. They divided into three groups (Group P: Pressure-controlled ventilation, Group V: Volume-controlled ventilation, and Group C: Control group with no ventilation) in accordance with the mode of ventilation. Patients studied for chest X-ray, lung ultrasound, arterial oxygen partial pressure to fractional inspired oxygen ratio, alveolar–arterial oxygen gradient, static lung compliance, and dynamic lung compliance, taken after induction of anesthesia, 1-h post-CPB, and 1 h after arrival to cardiac surgical unit. Results: There was no significant difference regarding the chest X-ray and lung ultrasonography results among the three groups of the study. Regarding arterial oxygen partial pressure to fractional inspired oxygen ratio, alveolar–arterial oxygen gradient, static lung compliance, and dynamic lung compliance, the results showed lower values in the postbypass period, and the postoperative period compared to the postinduction period among the three groups of the study with no significant difference. Conclusions: The evidence of clear benefits of maintaining ventilation alone during cardiopulmonary bypass is inconsistent. More studies are required to determine the precise role of different lung protective strategies during cardiopulmonary bypass.
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Affiliation(s)
- Noha Sayed Hussain
- Department of Anesthesia, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Ayman Anis Metry
- Department of Anesthesia, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | | | - Rami Mounir Wahba
- Department of Anesthesia, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - Milad Zakery Ragaei
- Department of Anesthesia, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - John Nader Bestarous
- Department of Anesthesia, Faculty of Medicine, Ain Shams University, Cairo, Egypt
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19
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Elayashy M, Madkour MA, Mahmoud AAA, Hosny H, Hussein A, Nabih A, Lofty A, Hamza HM, Hassan P, Wagih M, Mohamed AK. Effect of ultrafiltration on extravascular lung water assessed by lung ultrasound in children undergoing cardiac surgery: a randomized prospective study. BMC Anesthesiol 2019; 19:93. [PMID: 31159739 PMCID: PMC6547534 DOI: 10.1186/s12871-019-0771-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2019] [Accepted: 05/24/2019] [Indexed: 12/11/2022] Open
Abstract
Background Increased lung water and the resultant atelectasis are significant pulmonary complications after cardiopulmonary bypass (CPB) in children undergoing cardiac surgery; these complications are observed after CPB than after anaesthesia alone. Ultrafiltration has been shown to decrease total body water and postoperative blood loss and improve the alveolar to arterial oxygen gradient and pulmonary compliance. This study investigated whether conventional ultrafiltration during CPB in paediatric heart surgeries influences post-bypass extravascular lung water (EVLW) assessed by lung ultrasound (LUS). Methods This randomized controlled study included 60 patients with congenital heart disease (ASA II-III), aged 1 to 48 months, with a body weight > 3 kg. Conventional ultrafiltration targeting a haematocrit (HCT) level of 28% was performed on the ultrafiltration group, while the control group did not receive ultrafiltration. LUS scores were recorded at baseline and at the end of surgery. The PaO2/FiO2 ratio (arterial oxygen tension divided by the fraction of inspired oxygen), urine output, and haemodynamic parameters were also recorded. Results LUS scores were comparable between the two groups both at baseline (p = 0.92) and at the end of surgery (p = 0.95); however, within the same group, the scores at the end of surgery significantly differed from their baseline values in both the ultrafiltration (p = 0.01) and non-ultrafiltration groups (p = 0.02). The baseline PaO2/FiO2 ratio was comparable between both groups. at the end of surgery, The PaO2/FiO2 ratio increased in the ultrafiltration group compared to that in the non-ultrafiltration group, albeit insignificant (p = 0.16). no correlation between the PaO2/FiO2 ratio and LUS score was found at baseline (r = − 0.21, p = 0.31). On the other hand, post-surgical measurements were negatively correlated (r = − 0.41, p = 0.045). Conclusion Conventional ultrafiltration did not alter the EVLW when assessed by LUS and oxygenation state. Similarly, ultrafiltration did not affect the urea and creatinine levels, intensive care unit (ICU) stays, ventilation days, or mortality. Trial registration Clinicaltrials.gov Identifier: NCT03146143 registered on 29-April-2017.
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Affiliation(s)
- Mohamed Elayashy
- Department of Anesthesia and Intensive Care, Kasr Al Ainy Faculty of Medicine, Cairo University, 7 Elshishiny St., El Maryotia, Faysal, Giza, 12131, Egypt.
| | - Mai A Madkour
- Department of Anesthesia and Intensive Care, Kasr Al Ainy Faculty of Medicine, Cairo University, 7 Elshishiny St., El Maryotia, Faysal, Giza, 12131, Egypt
| | | | - Hisham Hosny
- Department of Anesthesia and Intensive Care, Kasr Al Ainy Faculty of Medicine, Cairo University, 7 Elshishiny St., El Maryotia, Faysal, Giza, 12131, Egypt
| | - Amr Hussein
- Department of Anesthesia and Intensive Care, Kasr Al Ainy Faculty of Medicine, Cairo University, 7 Elshishiny St., El Maryotia, Faysal, Giza, 12131, Egypt
| | - Ahmed Nabih
- Department of Anesthesia and Intensive Care, Kasr Al Ainy Faculty of Medicine, Cairo University, 7 Elshishiny St., El Maryotia, Faysal, Giza, 12131, Egypt
| | - Ahmed Lofty
- Department of Anesthesia and Intensive Care, Kasr Al Ainy Faculty of Medicine, Cairo University, 7 Elshishiny St., El Maryotia, Faysal, Giza, 12131, Egypt
| | - Hamza Mohamed Hamza
- Department of Anesthesia and Intensive Care, Kasr Al Ainy Faculty of Medicine, Cairo University, 7 Elshishiny St., El Maryotia, Faysal, Giza, 12131, Egypt
| | - Passaint Hassan
- Department of Anesthesia and Intensive Care, Kasr Al Ainy Faculty of Medicine, Cairo University, 7 Elshishiny St., El Maryotia, Faysal, Giza, 12131, Egypt
| | - Mohamed Wagih
- Department of Anesthesia and Intensive Care, Kasr Al Ainy Faculty of Medicine, Cairo University, 7 Elshishiny St., El Maryotia, Faysal, Giza, 12131, Egypt
| | - Ahmed Kareem Mohamed
- Department of Anesthesia and Intensive Care, Kasr Al Ainy Faculty of Medicine, Cairo University, 7 Elshishiny St., El Maryotia, Faysal, Giza, 12131, Egypt
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20
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Fiorentino F, Jaaly EA, Durham AL, Adcock IM, Lockwood G, Rogers C, Ascione R, Reeves BC, Angelini GD. Low‐frequency ventilation during cardiopulmonary bypass for lung protection: A randomized controlled trial. J Card Surg 2019; 34:385-399. [DOI: 10.1111/jocs.14044] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 03/01/2019] [Accepted: 03/04/2019] [Indexed: 01/09/2023]
Affiliation(s)
| | - Emad Al Jaaly
- Department of Cardiac SurgeryBristol Heart Institute, University of Bristol, Bristol Royal InfirmaryBristol United Kingdom
| | - Andrew L. Durham
- Department of Cardiac SurgeryNational Heart & Lung Institute, Imperial College LondonLondon United Kingdom
| | - Ian M. Adcock
- Department of Cardiac SurgeryNational Heart & Lung Institute, Imperial College LondonLondon United Kingdom
| | - Geoffrey Lockwood
- Department of Surgery & CancerImperial College LondonLondon United Kingdom
| | - Chris Rogers
- Department of Cardiac SurgeryBristol Heart Institute, University of Bristol, Bristol Royal InfirmaryBristol United Kingdom
| | - Raimondo Ascione
- Department of Cardiac SurgeryBristol Heart Institute, University of Bristol, Bristol Royal InfirmaryBristol United Kingdom
| | - Barney C. Reeves
- Department of Cardiac SurgeryBristol Heart Institute, University of Bristol, Bristol Royal InfirmaryBristol United Kingdom
| | - Gianni D. Angelini
- Department of Cardiac SurgeryBristol Heart Institute, University of Bristol, Bristol Royal InfirmaryBristol United Kingdom
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21
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The Effects of Intraoperative Inspired Oxygen Fraction on Postoperative Pulmonary Parameters in Patients with General Anesthesia: A Systemic Review and Meta-Analysis. J Clin Med 2019; 8:jcm8050583. [PMID: 31035324 PMCID: PMC6572026 DOI: 10.3390/jcm8050583] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 04/26/2019] [Accepted: 04/26/2019] [Indexed: 12/29/2022] Open
Abstract
High intraoperative inspired oxygen concentration is applied to prevent desaturation during induction and recovery of anesthesia. However, high oxygen concentration may lead to postoperative pulmonary complications. The purpose of this study is to compare the postoperative pulmonary parameters according to intraoperative inspired oxygen fraction in patients undergoing general anesthesia. We identified all randomized controlled trials investigating postoperative differences in arterial gas exchange according to intraoperative fraction of inspired oxygen (FiO2). A total of 10 randomized controlled trials were included, and 787 patients were analyzed. Postoperative PaO2 was lower in the high FiO2 group compared with the low FiO2 group (mean difference (MD) −4.97 mmHg, 95% CI −8.21 to −1.72, p = 0.003). Postoperative alveolar-arterial oxygen gradient (AaDO2) was higher (MD 3.42 mmHg, 95% CI 0.95 to 5.89, p = 0.007) and the extent of atelectasis was more severe (MD 2.04%, 95% CI 0.14 to 3.94, p = 0.04) in high intraoperative FiO2 group compared with low FiO2 group. However, postoperative SpO2 was comparable between the two groups. The results of this meta-analysis suggest that high inspired oxygen fraction during anesthesia may impair postoperative pulmonary parameters. Cautious approach in intraoperative inspired oxygen fraction is required for patients susceptible to postoperative pulmonary complications.
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22
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Ferrando C, Puig J, Serralta F, Carrizo J, Pozo N, Arocas B, Gutierrez A, Villar J, Belda FJ, Soro M. High-flow nasal cannula oxygenation reduces postoperative hypoxemia in morbidly obese patients: a randomized controlled trial. Minerva Anestesiol 2019; 85:1062-1070. [PMID: 30994312 DOI: 10.23736/s0375-9393.19.13364-0] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Postoperative pulmonary complications (PPCs) are common in high-risk surgical patients. Postoperative ventilatory management may improve their outcome. Supplemental oxygen through a high-flow nasal cannula (HFNC) has become an alternative to classical oxygenation techniques, although the results published for postoperative patients are contradictory. We examined the efficacy of HFNC in postoperative morbidly obese patients who were ventilated intraoperatively with an open-lung approach (OLA). METHODS We performed an open, two-arm, randomized controlled trial in 64 patients undergoing bariatric surgery (N.=32 in each arm) from May to November 2017 at the Hospital Clínico of Valencia. Patients were randomly assigned to receive HFNC oxygen therapy at the time of extubation or to receive conventional oxygen therapy, both applied during the first three postoperative hours. Intraoperatively, a recruitment maneuver and individualized positive end-expiratory pressure was applied in all patients. The primary outcome was postoperative hypoxemia. RESULTS All patients were included in the final analysis. There were no significant differences between the baseline characteristics. Postoperative hypoxemia was less frequent in the HFNC group compared to those who received standard care (28.6% vs. 80.0%, relative risk [RR]: 0.35; 95%CI: 0.150-0.849, P=0.009). Prevalence of atelectasis was lower in the HFNC group (31% vs. 77%, RR: 0.39; 95%CI: 0.166-0.925, P=0.013). No severe PPCs were reported in any patient. CONCLUSIONS Early application of HFNC in the operating room before extubation and during the immediate postoperative period decreases postoperative hypoxemia in obese patients after bariatric surgery who were intraoperatively ventilated using an OLA approach.
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Affiliation(s)
- Carlos Ferrando
- CIBER de Enfermedades Respiratorias, Carlos III Health Institute, Madrid, Spain - .,Department of Anesthesiology and Critical Care, Hospital Clínic, Institut D'investigació August Pi i Sunyer, Barcelona, Spain -
| | - Jaume Puig
- Department of Anesthesiology and Critical Care, General University Hospital, Valencia, Spain
| | - Ferran Serralta
- Department of Anesthesiology and Critical Care, Clinical University Hospital, Valencia, Spain
| | - Juan Carrizo
- Department of Anesthesiology and Critical Care, Clinical University Hospital, Valencia, Spain
| | - Natividad Pozo
- Department of Anesthesiology and Critical Care, Clinical University Hospital, Valencia, Spain
| | - Blanca Arocas
- Department of Anesthesiology and Critical Care, Clinical University Hospital, Valencia, Spain
| | - Andrea Gutierrez
- Department of Anesthesiology and Critical Care, Clinical University Hospital, Valencia, Spain
| | - Jesús Villar
- CIBER de Enfermedades Respiratorias, Carlos III Health Institute, Madrid, Spain.,Research Unit, Multidisciplinary Organ Dysfunction Evaluation Research Network, Dr. Negrin University Hospital, Las Palmas de Gran Canaria, Spain.,Keenan Research Center for Biomedical Sciences, Li Ka Shing Knowledge Institute, St. Michael's Hospital, Toronto, ON, Canada
| | - Francisco J Belda
- Department of Anesthesiology and Critical Care, Clinical University Hospital, Valencia, Spain
| | - Marina Soro
- Department of Anesthesiology and Critical Care, Clinical University Hospital, Valencia, Spain
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23
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Babini G, Ristagno G, Boccardo A, De Giorgio D, De Maglie M, Affatato R, Ceriani S, Zani D, Novelli D, Staszewsky L, Masson S, Pravettoni D, Latini R, Belloli A, Scanziani E, Skrifvars M. Effect of mild hypercapnia on outcome and histological injury in a porcine post cardiac arrest model. Resuscitation 2019; 135:110-117. [DOI: 10.1016/j.resuscitation.2018.10.024] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Revised: 10/02/2018] [Accepted: 10/25/2018] [Indexed: 10/28/2022]
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Lagier D, Fischer F, Fornier W, Fellahi JL, Colson P, Cholley B, Jaber S, Baumstarck K, Guidon C. A perioperative surgeon-controlled open-lung approach versus conventional protective ventilation with low positive end-expiratory pressure in cardiac surgery with cardiopulmonary bypass (PROVECS): study protocol for a randomized controlled trial. Trials 2018; 19:624. [PMID: 30424770 PMCID: PMC6234562 DOI: 10.1186/s13063-018-2967-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Accepted: 10/08/2018] [Indexed: 12/16/2022] Open
Abstract
Background Postoperative pulmonary complications (PPCs) are frequent after on-pump cardiac surgery. Cardiac surgery results in a complex pulmonary insult leading to high susceptibility to perioperative pulmonary atelectasis. For technical reasons, ventilator settings interact with the surgical procedure and traditionally, low levels of positive end-expiratory pressure (PEEP) have been used. The objective is to compare a perioperative, multimodal and surgeon-controlled open-lung approach with conventional protective ventilation with low PEEP to prevent PPCs in patients undergoing cardiac surgery. Methods/design The perioperative open-lung protective ventilation in cardiac surgery (PROVECS) trial is a multicenter, two-arm, randomized controlled trial. In total, 494 patients scheduled for elective cardiac surgery with cardiopulmonary bypass (CPB) and aortic cross-clamp will be randomized into one of the two treatment arms. In the experimental group, systematic recruitment maneuvers and perioperative high PEEP (8 cmH2O) are associated with ultra-protective ventilation during CPB. In this group, the settings of the ventilator are controlled by surgeons in relation to standardized protocol deviations. In the control group, no recruitment maneuvers, low levels of PEEP (2 cmH2O) and continuous positive airway pressure during CPB (2 cmH2O) are used. Low tidal volumes (6–8 mL/kg of predicted body weight) are used before and after CPB in each group. The primary endpoint is a composite of the single PPCs evaluated during the first 7 postoperative days. Discussion The PROVECS trial will be the first multicenter randomized controlled trial to evaluate the impact of a perioperative and multimodal open-lung ventilatory strategy on the occurrence of PPCs after on-pump cardiac surgery. The trial design includes standardized surgeon-controlled protocol deviations that guarantee a pragmatic approach. The results will help anesthesiologists and surgeons aiming to optimize ventilatory settings during cardiac surgery. Trial registration Clinical Trials.gov, NCT 02866578. Registered on 15 August 2016. Last updated 11 July 2017. Electronic supplementary material The online version of this article (10.1186/s13063-018-2967-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- David Lagier
- Department of Cardiovascular Anesthesiology and Critical Care Medicine, La Timone University Hospital, AP-HM and Aix-Marseille University, 264 rue saint Pierre, 13005, cedex 5, Marseille, France.
| | - François Fischer
- Department of Cardiovascular and Thoracic Anesthesiology, Nouvel Hôpital Civil, Strasbourg, France
| | - William Fornier
- Department of Anesthesiology and Critical Care Medicine, Louis Pradel University Hospital and University Claude Bernard, 28 Avenue du Doyen Lépine, 69677, Bron, France
| | - Jean-Luc Fellahi
- Department of Anesthesiology and Critical Care Medicine, Louis Pradel University Hospital and University Claude Bernard, 28 Avenue du Doyen Lépine, 69677, Bron, France
| | - Pascal Colson
- Department of Anesthesiology and Critical Care Medicine, Arnaud de Villeneuve University Hospital, 371 Avenue du Doyen Gaston Giraud, 34295, Montpellier, France
| | - Bernard Cholley
- Department of Anesthesiology and Critical Care Medicine, Hôpital Européen Georges Pompidou, AP-HP and University Paris Descartes-Sorbonne Paris Cité, 20 Rue Leblanc, 75015, Paris, France
| | - Samir Jaber
- Department of Anesthesiology and Critical Care Medicine, Saint Eloi University Hospital, 80 Avenue Augustin Fliche, 34295, Montpellier, France
| | - Karine Baumstarck
- Unité de Recherche EA3279, Aix-Marseille University, 27 bd Jean Moulin, Marseille, cedex 5, 13385, Marseille, France
| | - Catherine Guidon
- Department of Cardiovascular Anesthesiology and Critical Care Medicine, La Timone University Hospital, AP-HM and Aix-Marseille University, 264 rue saint Pierre, 13005, cedex 5, Marseille, France
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Lung recruitment improves right ventricular performance after cardiopulmonary bypass: A randomised controlled trial. Eur J Anaesthesiol 2018; 34:66-74. [PMID: 27861261 DOI: 10.1097/eja.0000000000000559] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
BACKGROUND Atelectasis after cardiopulmonary bypass (CPB) can affect right ventricular (RV) performance by increasing its outflow impedance. OBJECTIVE The aim of this study was to determine whether a lung recruitment manoeuvre improves RV function by re-aerating the lung after CPB. DESIGN Randomised controlled study. SETTING Single-institution study, community hospital, Córdoba, Argentina. PATIENTS Forty anaesthetised patients with New York Heart Association class I or II, preoperative left ventricular ejection fraction at least 50% and Euroscore 6 or less scheduled for cardiac surgery with CPB. INTERVENTIONS Patients were assigned to receive either standard ventilation with 6 cmH2O of positive end-expiratory pressure (PEEP; group C, n = 20) or standard ventilation with a recruitment manoeuvre and 10 cmH2O of PEEP after surgery (group RM, n = 20). RV function, left ventricular cardiac index (CI) and lung aeration were assessed by transoesophageal echocardiography (TOE) before, at the end of surgery and 30 min after surgery. MAIN OUTCOME MEASURES RV function parameters and atelectasis assessed by TOE. RESULTS Haemodynamic data and atelectasis were similar between groups before surgery. At the end of surgery, CI had decreased from 2.9 ± 1.1 to 2.6 ± 0.9 l min m in group C (P = 0.24) and from 2.8 ± 1.0 to 2.6 ± 0.8 l min m in group RM (P = 0.32). TOE-derived RV function parameters confirmed a mild decrease in RV performance in 95% of patients, without significant differences between groups (multivariate Hotelling t-test P = 0.16). Atelectasis was present in 18 patients in group C and 19 patients in group RM (P = 0.88). After surgery, CI decreased further from 2.6 to 2.4 l min m in group C (P = 0.17) but increased from 2.6 to 3.7 l min m in group RM (P < 0.001). TOE-derived RV function parameters improved only in group RM (Hotelling t-test P < 0.001). Atelectasis was present in 100% of patients in group C but only in 10% of those in group RM (P < 0.001). CONCLUSION Atelectasis after CPB impairs RV function but this can be resolved by lung recruitment using 10 cmH2O of PEEP. TRIAL REGISTRATION Protocol started on October 2014.
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Zochios V, Klein AA, Gao F. Protective Invasive Ventilation in Cardiac Surgery: A Systematic Review With a Focus on Acute Lung Injury in Adult Cardiac Surgical Patients. J Cardiothorac Vasc Anesth 2018; 32:1922-1936. [DOI: 10.1053/j.jvca.2017.10.031] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/08/2017] [Indexed: 12/19/2022]
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García-Fernández J, Romero A, Blanco A, Gonzalez P, Abad-Gurumeta A, Bergese SD. Recruitment manoeuvres in anaesthesia: How many more excuses are there not to use them? ACTA ACUST UNITED AC 2018; 65:209-217. [PMID: 29395110 DOI: 10.1016/j.redar.2017.12.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Accepted: 12/05/2017] [Indexed: 11/29/2022]
Abstract
Pulmonary recruitment manoeuvres (RM) are intended to reopen collapsed lung areas. RMs are present in nature as a physiological mechanism to get a newborn to open their lungs for the first time at birth, and we also use them, in our usual anaesthesiological clinical practice, after induction or during general anaesthesia when a patient is desaturated. However, there is much confusion in clinical practice regarding their safety, the best way to perform them, when to do them, in which patients they are indicated, and in those where they are totally contraindicated. There are important differences between RM in the patient with adult respiratory distress syndrome, and in a healthy patient during general anaesthesia. Our intention is to review, from a clinical and practical point of view, the use of RM, specifically in anaesthesia.
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Affiliation(s)
- J García-Fernández
- Servicio de Anestesiología, Cuidados Críticos y Dolor. Hospital Universitario Puerta de Hierro, Majadahonda, Madrid, España; Departamento de Cirugía, Facultad de Medicina, Universidad Autónoma , Madrid, España.
| | - A Romero
- Servicio de Anestesiología, Cuidados Críticos y Dolor. Hospital Universitario Puerta de Hierro, Majadahonda, Madrid, España
| | - A Blanco
- Servicio de Anestesiología, Cuidados Críticos y Dolor. Hospital Universitario Puerta de Hierro, Majadahonda, Madrid, España
| | - P Gonzalez
- Department of Anesthesia and Perioperative Medicine, Akademiska University Hospital, Uppsala, Suecia
| | - A Abad-Gurumeta
- Servicio de Anestesiología, Cuidados Críticos y Dolor, Hospital Universitario Infanta Leonor, , Madrid, España; La Revista Española de Anestesiología y Reanimación; Departamento de Farmacología, Facultad de Medicina. Universidad Complutense , Madrid, España
| | - S D Bergese
- Neurosurgical Anesthesia, Departments of Anesthesiology and Neurological Surgery, The Ohio State University, Columbus, Ohio, Estados Unidos
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Bignami E, Guarnieri M, Saglietti F, Maglioni EM, Scolletta S, Romagnoli S, De Paulis S, Paternoster G, Trumello C, Meroni R, Scognamiglio A, Budillon AM, Pota V, Zangrillo A, Alfieri O. Different strategies for mechanical VENTilation during CardioPulmonary Bypass (CPBVENT 2014): study protocol for a randomized controlled trial. Trials 2017; 18:264. [PMID: 28592276 PMCID: PMC5463370 DOI: 10.1186/s13063-017-2008-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2016] [Accepted: 05/22/2017] [Indexed: 11/24/2022] Open
Abstract
Background There is no consensus on which lung-protective strategies should be used in cardiac surgery patients. Sparse and small randomized clinical and animal trials suggest that maintaining mechanical ventilation during cardiopulmonary bypass is protective on the lungs. Unfortunately, such evidence is weak as it comes from surrogate and minor clinical endpoints mainly limited to elective coronary surgery. According to the available data in the academic literature, an unquestionable standardized strategy of lung protection during cardiopulmonary bypass cannot be recommended. The purpose of the CPBVENT study is to investigate the effectiveness of different strategies of mechanical ventilation during cardiopulmonary bypass on postoperative pulmonary function and complications. Methods/design The CPBVENT study is a single-blind, multicenter, randomized controlled trial. We are going to enroll 870 patients undergoing elective cardiac surgery with planned use of cardiopulmonary bypass. Patients will be randomized into three groups: (1) no mechanical ventilation during cardiopulmonary bypass, (2) continuous positive airway pressure of 5 cmH2O during cardiopulmonary bypass, (3) respiratory rate of 5 acts/min with a tidal volume of 2–3 ml/Kg of ideal body weight and positive end-expiratory pressure of 3–5 cmH2O during cardiopulmonary bypass. The primary endpoint will be the incidence of a PaO2/FiO2 ratio <200 until the time of discharge from the intensive care unit. The secondary endpoints will be the incidence of postoperative pulmonary complications and 30-day mortality. Patients will be followed-up for 12 months after the date of randomization. Discussion The CPBVENT trial will establish whether, and how, different ventilator strategies during cardiopulmonary bypass will have an impact on postoperative pulmonary complications and outcomes of patients undergoing cardiac surgery. Trial registration ClinicalTrials.gov, ID: NCT02090205. Registered on 8 March 2014. Electronic supplementary material The online version of this article (doi:10.1186/s13063-017-2008-2) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Elena Bignami
- Department of Anaesthesia and Intensive Care, IRCCS San Raffaele Scientific Institute, Via Olgettina 60, 20132, Milan, Italy.
| | - Marcello Guarnieri
- Department of Anaesthesia and Intensive Care, IRCCS San Raffaele Scientific Institute, Via Olgettina 60, 20132, Milan, Italy
| | - Francesco Saglietti
- Department of Anaesthesia and Intensive Care, IRCCS San Raffaele Scientific Institute, Via Olgettina 60, 20132, Milan, Italy
| | - Enivarco Massimo Maglioni
- Department of Anaesthesia, Intensive Care and Medical Biotechnologies University of Siena, Siena, Italy
| | - Sabino Scolletta
- Department of Anaesthesia, Intensive Care and Medical Biotechnologies University of Siena, Siena, Italy
| | - Stefano Romagnoli
- Department of Anaesthesiology and Intensive Care, Azienda Ospedaliera Universitaria Careggi, Florence, Italy
| | - Stefano De Paulis
- Department of Cardiovascular Sciences, Catholic University of the Sacred Heart, 00168, Rome, Italy
| | - Gianluca Paternoster
- Department of Cardiovascular Anaesthesia and Intensive Care, Azienda Ospedaliera S. Carlo, Potenza, Italy
| | - Cinzia Trumello
- Department of Cardiac Surgery, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Roberta Meroni
- Department of Anaesthesia and Intensive Care, IRCCS San Raffaele Scientific Institute, Via Olgettina 60, 20132, Milan, Italy
| | - Antonio Scognamiglio
- Section of Anesthesia and Intensive Care, Department of Neurosciences, Reproductive and Odontostomatological Sciences, University of Naples "Federico II", Via Pansini 16, Naples, Italy
| | | | - Vincenzo Pota
- Department of Anesthesia and Intensive Care, Pineta Grande Private Hospital, 80122, Castelvolturno, Italy
| | - Alberto Zangrillo
- Department of Anaesthesia and Intensive Care, IRCCS San Raffaele Scientific Institute, Via Olgettina 60, 20132, Milan, Italy
| | - Ottavio Alfieri
- Department of Cardiac Surgery, Parma University Hospital, Parma, Italy
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Sacuto Y, Sacuto T. Early pulmonary compliance increase during cardiac surgery predicted post-operative lung dysfunction. Perfusion 2017; 32:631-638. [DOI: 10.1177/0267659117713592] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Introduction: Lung dysfunction following cardiac surgery is currently viewed as the consequence of atelectasis and lung injury. While the mechanism of atelectasis has been largely detailed, the pathogenesis of lung injury after cardiopulmonary bypass is still unclear. Based upon clinical and experimental studies, we hypothesized that lungs could be injured through a mechanical phenomenon. Methods: We recorded pulmonary compliance at six key moments of a heart operation in 62 adult patients undergoing elective cardiac surgery. We focused on the period lasting from anesthetic induction to aorta unclamping. We calculated the variation of static and dynamic pulmonary compliance caused by thorax opening; ΔCstat1 and ΔCdyn1 and that caused by cardiopulmonary bypass, ΔCstat2 and ΔCdyn2. Blood gases were performed under standardized ventilation after anesthetic induction and after surgical closure. The PaO2/FiO2 ratio was calculated. ∆PaO2/FiO2 was the criterion for lung dysfunction. We compared ΔCstat1 and ΔCdyn1 with both ∆PaO2/FiO2 and, respectively, ΔCstat2 and ΔCdyn2. Results: Static and dynamic compliance increased with the opening of the thorax and decreased with the start of cardiopulmonary bypass. The PaO2/FiO2 ratio diminished after surgery. ΔCstat1 and ΔCdyn1 were negatively correlated with both ∆PaO2/FiO2 (r=-0.42; p<0.001 and r=-0.44; p<0.001) and, respectively, with ΔCstat2 and ΔCdyn2 (r=-0.59; p<0.001 and r=-0.53; p<0.001). Conclusions: Increased pulmonary compliance induced by the opening of the thorax is correlated with worsened intrapulmonary shunt after cardiopulmonary bypass. A mechanical phenomenon could be partly responsible for post-operative hypoxemia.
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Affiliation(s)
- Yann Sacuto
- Department of Anesthesiology and Intensive Care, Rouen University Hospital, Rouen, France
| | - Thierry Sacuto
- Department of Anesthesiology and Intensive Care, Marie Lannelongue Hospital, Le Plessis Robinson, France (location of the study)
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Ferrando C, Romero C, Tusman G, Suarez-Sipmann F, Canet J, Dosdá R, Valls P, Villena A, Serralta F, Jurado A, Carrizo J, Navarro J, Parrilla C, Romero JE, Pozo N, Soro M, Villar J, Belda FJ. The accuracy of postoperative, non-invasive Air-Test to diagnose atelectasis in healthy patients after surgery: a prospective, diagnostic pilot study. BMJ Open 2017; 7:e015560. [PMID: 28554935 PMCID: PMC5623366 DOI: 10.1136/bmjopen-2016-015560] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
OBJECTIVE To assess the diagnostic accuracy of peripheral capillary oxygen saturation (SpO2) while breathing room air for 5 min (the 'Air-Test') in detecting postoperative atelectasis. DESIGN Prospective cohort study. Diagnostic accuracy was assessed by measuring the agreement between the index test and the reference standard CT scan images. SETTING Postanaesthetic care unit in a tertiary hospital in Spain. PARTICIPANTS Three hundred and fifty patients from 12 January to 7 February 2015; 170 patients scheduled for surgery under general anaesthesia who were admitted into the postsurgical unit were included. INTERVENTION The Air-Test was performed in conscious extubated patients after a 30 min stabilisation period during which they received supplemental oxygen therapy via a venturi mask. The Air-Test was defined as positive when SpO2 was ≤96% and negative when SpO2 was ≥97%. Arterial blood gases were measured in all patients at the end of the Air-Test. In the subsequent 25 min, the presence of atelectasis was evaluated by performing a CT scan in 59 randomly selected patients. MAIN OUTCOME MEASURES The primary study outcome was assessment of the accuracy of the Air-Test for detecting postoperative atelectasis compared with the reference standard. The secondary outcome was the incidence of positive Air-Test results. RESULTS The Air-Test diagnosed postoperative atelectasis with an area under the receiver operating characteristic curve of 0.90 (95% CI 0.82 to 0.98) with a sensitivity of 82.6% and a specificity of 87.8%. The presence of atelectasis was confirmed by CT scans in all patients (30/30) with positive and in 5 patients (17%) with negative Air-Test results. Based on the Air-Test, postoperative atelectasis was present in 36% of the patients (62 out of 170). CONCLUSION The Air-Test may represent an accurate, simple, inexpensive and non-invasive method for diagnosing postoperative atelectasis. TRIAL REGISTRATION NCT02650037.
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Affiliation(s)
- Carlos Ferrando
- Anesthesiology and Critical Care, Hospital Clínico Universitario Valencia, Valencia, Spain
| | - Carolina Romero
- Anesthesiology and Critical Care, Consorci Hospital General Universitari de Valencia, Valencia, Spain
| | - Gerardo Tusman
- Department of Anesthesiology, Hospital Privado de Comunidad, Mar de Plata, Argentina
| | - Fernando Suarez-Sipmann
- Uppsala Universitet, Uppsala, Sweden
- CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain
| | - Jaume Canet
- Anesthesiology and Critical Care, Hospital Universitari Germans Trias i Pujol, Badalona, Spain
| | - Rosa Dosdá
- Department of Radiology, Hospital Clinico Universitario Valencia, Valencia, Spain
| | - Paola Valls
- Anesthesiology and Critical Care, Hospital Clínico Universitario Valencia, Valencia, Spain
| | - Abigail Villena
- Anesthesiology and Critical Care, Hospital Clínico Universitario Valencia, Valencia, Spain
| | - Ferran Serralta
- Anesthesiology and Critical Care, Hospital Clínico Universitario Valencia, Valencia, Spain
| | - Ana Jurado
- Anesthesiology and Critical Care, Hospital Clínico Universitario Valencia, Valencia, Spain
| | - Juan Carrizo
- Anesthesiology and Critical Care, Hospital Clínico Universitario Valencia, Valencia, Spain
| | - Jose Navarro
- Anesthesiology and Critical Care, Hospital Clínico Universitario Valencia, Valencia, Spain
| | - Cristina Parrilla
- Department of Radiology, Hospital Clinico Universitario Valencia, Valencia, Spain
| | - Jose E Romero
- ITACA Institute (Group IBIME), Universidad Politécnica, Valencia, Spain
| | | | - Marina Soro
- Anesthesiology and Critical Care, Hospital Clínico Universitario Valencia, Valencia, Spain
| | - Jesús Villar
- CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain
- Research Unit, Hospital Universitario Dr. Negrin, Las Palmas de Gran Canaria, Spain
| | - Francisco Javier Belda
- Anesthesiology and Critical Care, Hospital Clínico Universitario Valencia, Valencia, Spain
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Moradian ST, Saeid Y, Ebadi A, Hemmat A, Ghiasi MS. Adaptive Support Ventilation Reduces the Incidence of Atelectasis in Patients Undergoing Coronary Artery Bypass Grafting: A Randomized Clinical Trial. Anesth Pain Med 2017; 7:e44619. [PMID: 28856111 PMCID: PMC5561444 DOI: 10.5812/aapm.44619] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Revised: 01/09/2017] [Accepted: 03/12/2017] [Indexed: 12/25/2022] Open
Abstract
Background Pulmonary complications are common following cardiac surgery and can lead to increased morbidity, mortality, and healthcare costs. Atelectasis is the most common respiratory complication following cardiac surgery. One of the most important methods for reducing pulmonary complications is supportive care with protective ventilation strategies. In this study, we aimed to assess the effect of adaptive support ventilation (ASV) on atelectasis in patients undergoing cardiac surgery. Methods In this single-blind randomized clinical trial, 115 patients, undergoing coronary artery bypass grafting, were randomly allocated into 2 groups: 57 patients in the intervention and 58 patients in the control group. Patients in the intervention group were weaned with ASV, while patients in the control group were managed using synchronized intermittent mandatory ventilation (SIMV) and pressure support. The incidence of atelectasis, duration of mechanical ventilation, manual ventilator setting, arterial blood gas measurements, and length of hospital stay were compared between the groups. Results The incidence of atelectasis, number of changes in the manual ventilator setting, number of alarms, and length of hospital stay reduced in the intervention group. However, duration of mechanical ventilation and number of ABG measurements were not significantly different between the groups. Conclusions The ASV mode could reduce the incidence of atelectasis and length of hospital stay. However, it did not reduce the duration of mechanical ventilation. It seems that ASV is not a superior mode for faster extubation.
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Affiliation(s)
- Seyed Tayeb Moradian
- PhD, Assistant Professor, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Yaser Saeid
- MsC, Nursing Faculty, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Abbas Ebadi
- Behavioral Sciences Research Center, Nursing Faculty, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Ali Hemmat
- MD, Cardiac Anesthesiology Fellowship, Baqiyatallah University of Medical Sciences, Tehran, Iran
| | - Mohammad Saeid Ghiasi
- MD, Cardiac Anesthesiology Fellowship, Baqiyatallah University of Medical Sciences, Tehran, Iran
- Corresponding author: Mohammad Saeid Ghiasi, MD, Cardiac Anesthesiology Fellowship, Baqiyatallah University of Medical Sciences, Tehran, Iran. E-mail:
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Jin M, Yang Y, Pan X, Lu J, Zhang Z, Cheng W. Effects of pulmonary static inflation with 50% xenon on oxygen impairment during cardiopulmonary bypass for stanford type A acute aortic dissection: A pilot study. Medicine (Baltimore) 2017; 96:e6253. [PMID: 28272227 PMCID: PMC5348175 DOI: 10.1097/md.0000000000006253] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
BACKGROUND The goal of this study was to investigate the effects of pulmonary static inflation with 50% xenon on postoperative oxygen impairment during cardiopulmonary bypass (CPB) for Stanford type A acute aortic dissection (AAD). METHODS This prospective single-center nonrandomized controlled clinical trial included 100 adult patients undergoing surgery for Stanford type A AAD at an academic hospital in China. Fifty subjects underwent pulmonary static inflation with 50% oxygen from January 2013 to January 2014, and 50 underwent inflation with 50% xenon from January 2014 to December 2014. During CPB, the lungs were inflated with either 50% xenon (xenon group) or 50% oxygen (control group) to maintain an airway pressure of 5 cm H2O. The primary outcome was oxygenation index (OI) value after intubation, and 10 minutes and 6 hours after the operation. The second outcome was cytokine and reactive oxygen species levels after intubation and 10 minutes, 6 hours, and 24 hours after the operation. RESULTS Patients treated with xenon had lower OI levels compared to the control group before surgery (P = 0.002); however, there was no difference in postoperative values between the 2 groups. Following surgery, mean maximal OI values decreased by 18.8% and 33.8%, respectively, in the xenon and control groups. After surgery, the levels of interleukin-6 (IL-6), tumor necrosis factor alpha, and thromboxane B2 decreased by 23.5%, 9.1%, and 30.2%, respectively, in the xenon group, but increased by 10.8%, 26.2%, and 26.4%, respectively, in the control group. Moreover, IL-10 levels increased by 28% in the xenon group and decreased by 7.5% in the control group. There were significant time and treatment-time interaction effects on methane dicarboxylic aldehyde (P = 0.000 and P = 0.050, respectively) and myeloperoxidase (P = 0.000 and P = 0.001 in xenon and control groups, respectively). There was no difference in hospital mortality and 1-year survival rate between the 2 groups. CONCLUSION Pulmonary static inflation with 50% xenon during CPB could attenuate OI decreases at the end of surgery for Stanford type A AAD. Thus, xenon may function by triggering anti-inflammatory responses and suppressing pro-inflammatory and oxidative effects.
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Affiliation(s)
- Mu Jin
- Department of Anaesthesiology
| | | | - Xudong Pan
- Department of Cardiology Surgery, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart Lung and Blood Vessel Diseases, and Beijing Engineering Research Center of Vascular Prostheses, Beijing, China
| | | | - Zhiquan Zhang
- Department of Anesthesiology, Duke University Medical Center, Durham, NC
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Bainbridge D, Cheng D. Initial Perioperative Care of the Cardiac Surgical Patient. Semin Cardiothorac Vasc Anesth 2016. [DOI: 10.1177/108925320200600306] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Recently, changes in the management of cardiac patients have allowed earlier discharge from the cardiac recovery area and reduced hospital length of stay. These changes have been drien by a need to reduce the cost of cardiac surgery and imrove efficiency. This change has been both financially sucessful and safe for patients. To allow for this success, a joint effort is required between the departments of cardiac surgery and anesthesiology involving the preoperative, intraoperative and postoperative treatment of these patients. Through recogition of suitable candidates, modifications in anesthetic techique, and appropriate postoperative management, the goal of extubation within 6 hours of admission to the cardiac recovery area can be achieved. Changes in intraoperative and early postoperative management of cardiac surgical patients are discussed. Specific recovery models are reviewed with disussion of the parallel and integrated models. Methods of preicting prolonged extubation times and intensive care unit length of stay are also discussed. Initial management of the cardiac patient in the cardiac recovery area is presented with a more in-depth review of specific complications: stroke, atril fibrillation, blood loss, left ventricular dysfunction, and pulonary dysfunction.
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Affiliation(s)
- Daniel Bainbridge
- Department of Anesthesia and Perioperative Medicine London Health Sciences Center, University of Western Ontario, London, Ontario, Canada
| | - Davy Cheng
- Department of Anesthesia and Perioperative Medicine, St Josephs' Health Care, University of Western Ontario, London, Ontario, Canada
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Abstract
Over the past two decades there has been a steady evolution in the practice of adult cardiac surgery with the introduction of “off-pump” surgery. However, respiratory complications remain a leading cause of postcardiac surgical morbidity and can prolong hospital stays and increase costs. The high incidence of pulmonary complications is in part due to the disruption of normal ventilatory function that is inherent to surgery in the thoracic region. Furthermore, patients undergoing such surgery often have underlying illnesses such as intrinsic lung disease (e.g., chronic obstructive pulmonary disease) and pulmonary dysfunction secondary to cardiac disease (e.g., congestive heart failure) that increase their susceptibility to postoperative respiratory problems. Given that many patients undergoing cardiac surgery are thus susceptiple to pulmonary complications, it is remarkable that more patients do not suffer from them during and after cardiac surgery. This is to a large degree because of advances in anesthetic, surgical and critical care that, for example, have reduced the physiological insults of surgery (e.g., better myocardial preservation techniques) and streamlined care in the immediate postoperative period (e.g., early extubation). Moreover, the development of minimally invasive surgery and nonbypass techniques are further evidence of the attempts at reducing the homeostatic disruptions of cardiac surgery. This review examines the available information on the incidences, consequences, and treatments of postcardiac surgery respiratory complications.
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Affiliation(s)
- Charles Weissman
- Department of Anesthesiology and Critical Care Medicine, Hadassah-Hebrew University School of Medicine, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
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Freitas CRDC, Malbouisson LMS, Benicio A, Negri EM, Bini FM, Massoco CO, Otsuki DA, Melo MFV, Carmona MJC. Lung Perfusion and Ventilation During Cardiopulmonary Bypass Reduces Early Structural Damage to Pulmonary Parenchyma. Anesth Analg 2016; 122:943-52. [PMID: 26991612 DOI: 10.1213/ane.0000000000001118] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND It is unclear whether maintaining pulmonary perfusion and ventilation during cardiopulmonary bypass (CPB) reduces pulmonary inflammatory tissue injury compared with standard CPB where the lungs are not ventilated and are minimally perfused. In this study, we tested the hypothesis that maintenance of lung perfusion and ventilation during CPB decreases regional lung inflammation, which may result in less pulmonary structural damage. METHODS Twenty-seven pigs were randomly allocated into a control group only submitted to sternotomy (n = 8), a standard CPB group (n = 9), or a lung perfusion group (n = 10), in which lung perfusion and ventilation were maintained during CPB. Hemodynamics, gas exchanges, respiratory mechanics, and systemic interleukins (ILs) were determined at baseline (T0), at the end of 90 minutes of CPB (T90), and 180 minutes after CPB (T180). Bronchoalveolar lavage (BAL) ILs were obtained at T0 and T180. Dorsal and ventral left lung tissue samples were examined for optical and electron microscopy. RESULTS At T90, there was a transient reduction in PaO2/FIO2 in CPB (126 ± 64 mm Hg) compared with the control and lung perfusion groups (296 ± 46 and 244 ± 57 mm Hg; P < 0.001), returning to baseline at T180. Serum ILs were not different among the groups throughout the study, whereas there were significant increases in BAL IL-6 (P < 0.001), IL-8 (P < 0.001), and IL-10 (P < 0.001) in both CPB and lung perfusion groups compared with the control group. Polymorphonuclear counts within the lung tissue were smaller in the lung perfusion group than in the CPB group (P = 0.006). Electron microscopy demonstrated extrusion of surfactant vesicles into the alveolar spaces and thickening of the alveolar septa in the CPB group, whereas alveolar and capillary histoarchitecture was better preserved in the lung perfusion group. CONCLUSIONS Maintenance of lung perfusion and ventilation during CPB attenuated early histologic signs of pulmonary inflammation and injury compared with standard CPB. Although increased compared with control animals, there were no differences in serum or BAL IL in animals receiving lung ventilation and perfusion during CPB compared with standard CPB.
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Affiliation(s)
- Claudia Regina da Costa Freitas
- From the *Discipline of Anesthesiology, LIM 8 - Laboratory of Anesthesiology, Faculdade de Medicina da Universidade de Sao Paulo, São Paulo, Brazil; †Department of Cardiothoracic Surgery, Instituto do Coração, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil; ‡Department of Pathology, Faculdade de Medicina da Universidade de Sao Paulo, São Paulo, Brazil; §Department of Veterinary Pathology, Faculdade de Medicina Veterinária da Universidade de Sao Paulo, São Paulo, Brazil; and ‖Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
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Parida S, Bidkar PU. Advanced pressure control modes of ventilation in cardiac surgery: Scanty evidence or unexplored terrain? Indian J Crit Care Med 2016; 20:169-72. [PMID: 27076729 PMCID: PMC4810895 DOI: 10.4103/0972-5229.178181] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/04/2022] Open
Abstract
Lung atelectasis resulting after cardiopulmonary bypass (CPB) can result in increased intrapulmonary shunting and consequent hypoxemia. Advanced pressure control modes of ventilation might have at least a theoretical advantage over conventional modes by assuring a minimum target tidal volume delivery at reasonable pressures, thus having potential advantages while ventilating patients with pulmonary atelectasis postcardiac surgery. However, the utility of these modes in the post-CPB setting have not been widely investigated, and their role in cardiac intensive care, therefore, remains quite limited.
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Affiliation(s)
- Satyen Parida
- Department of Anesthesiology and Critical Care, JIPMER, Puducherry, India
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Pulmonary Protection Strategies in Cardiac Surgery: Are We Making Any Progress? OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2015; 2015:416235. [PMID: 26576223 PMCID: PMC4630421 DOI: 10.1155/2015/416235] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Accepted: 03/12/2015] [Indexed: 01/19/2023]
Abstract
Pulmonary dysfunction is a common complication of cardiac surgery. The mechanisms involved in the development of pulmonary dysfunction are multifactorial and can be related to the activation of inflammatory and oxidative stress pathways. Clinical manifestation varies from mild atelectasis to severe respiratory failure. Managing pulmonary dysfunction postcardiac surgery is a multistep process that starts before surgery and continues during both the operative and postoperative phases. Different pulmonary protection strategies have evolved over the years; however, the wide acceptance and clinical application of such techniques remain hindered by the poor level of evidence or the sample size of the studies. A better understanding of available modalities and/or combinations can result in the development of customised strategies for the different cohorts of patients with the potential to hence maximise patients and institutes benefits.
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Pantoni CBF, Di Thommazo-Luporini L, Mendes RG, Caruso FCR, Mezzalira D, Arena R, Amaral-Neto O, Catai AM, Borghi-Silva A. Continuous Positive Airway Pressure During Exercise Improves Walking Time in Patients Undergoing Inpatient Cardiac Rehabilitation After Coronary Artery Bypass Graft Surgery: A RANDOMIZED CONTROLLED TRIAL. J Cardiopulm Rehabil Prev 2015; 36:20-7. [PMID: 26468628 DOI: 10.1097/hcr.0000000000000144] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE Continuous positive airway pressure (CPAP) has been used as an effective support to decrease the negative pulmonary effects of coronary artery bypass graft (CABG) surgery. However, it is unknown whether CPAP can positively influence patients undergoing CABG during exercise. This study evaluated the effectiveness of CPAP on the first day of ambulation after CABG in patients undergoing inpatient cardiac rehabilitation (CR). METHODS Fifty-four patients after CABG surgery were randomly assigned to receive either inpatient CR and CPAP (CPG) or standard CR without CPAP (CG). Cardiac rehabilitation included walking and CPAP pressures were set between 10 to 12 cmH2O. Participants were assessed on the first day of walking at rest and during walking. Outcome measures included breathing pattern variables, exercise time in seconds (ETs), dyspnea/leg effort ratings, and peripheral oxygen saturation (SpO2). RESULTS Twenty-seven patients (13 CPG vs 14 CG) completed the study. Compared with walking without noninvasive ventilation assistance, CPAP increased ETs by 43.4 seconds (P = .040) during walking, promoted better thoracoabdominal coordination, increased ventilation during walking by 12.5 L/min (P = .001), increased SpO2 values at the end of walking by 2.6% (P = .016), and reduced dyspnea ratings by 1 point (P = .008). CONCLUSIONS Continuous positive airway pressure can positively influence exercise tolerance, ventilatory function, and breathing pattern in response to a single bout of exercise after CABG.
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Affiliation(s)
- Camila Bianca Falasco Pantoni
- Cardiopulmonary Physiotherapy Laboratory (Dr Pantoni, Dr Thommazo-Luporini, Dr Mendes, Dr Caruso, Mr Mezzalira, Dr Catai, and Dr Borghi-Silva), Nucleus of Research in Physical Exercise, Federal University of São Carlos, São Carlos, São Paulo, Brazil; Department of Physical Therapy (Dr Arena), College of Applied Health Sciences, University of Illinois at Chicago, Chicago, Illinois; and Irmandade Santa Casa Misericordia Hospital (Dr Amaral-Neto), Araraquara, São Paulo, Brazil
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Lellouche F, Delorme M, Bussières J, Ouattara A. Perioperative ventilatory strategies in cardiac surgery. Best Pract Res Clin Anaesthesiol 2015; 29:381-95. [PMID: 26643102 PMCID: PMC10068651 DOI: 10.1016/j.bpa.2015.08.006] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Revised: 08/22/2015] [Accepted: 08/26/2015] [Indexed: 01/19/2023]
Abstract
Recent data promote the utilization of prophylactic protective ventilation even in patients without acute respiratory distress syndrome (ARDS), and especially after cardiac surgery. The implementation of specific perioperative ventilatory strategies in patients undergoing cardiac surgery can improve both respiratory and extra-pulmonary outcomes. Protective ventilation is not limited to tidal volume reduction. The major components of ventilatory management include assist-controlled mechanical ventilation with low tidal volumes (6-8 mL kg(-1) of predicted body weight) associated with higher positive end-expiratory pressure (PEEP), limitation of fraction of inspired oxygen (FiO2), ventilation maintenance during cardiopulmonary bypass, and finally recruitment maneuvers. In order for such strategies to be fully effective, they should be integrated into a multimodal approach beginning from the induction and continuing over the postoperative period.
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Affiliation(s)
- François Lellouche
- Institut Universitaire de Cardiologie et Pneumologie de Québec, Faculté de Médecine, Université Laval, Ville de Québec, Canada.
| | - Mathieu Delorme
- Institut Universitaire de Cardiologie et Pneumologie de Québec, Faculté de Médecine, Université Laval, Ville de Québec, Canada; CHU de Bordeaux, Service d'Anesthésie-Réanimation II, Univ. Bordeaux, Adaptation Cardiovasculaire à l'ischémie, U1034 et INSERM, Adaptation Cardiovasculaire à l'ischémie, U1034, F-33600 Pessac, France.
| | - Jean Bussières
- Institut Universitaire de Cardiologie et Pneumologie de Québec, Faculté de Médecine, Université Laval, Ville de Québec, Canada.
| | - Alexandre Ouattara
- CHU de Bordeaux, Service d'Anesthésie-Réanimation II, Univ. Bordeaux, Adaptation Cardiovasculaire à l'ischémie, U1034 et INSERM, Adaptation Cardiovasculaire à l'ischémie, U1034, F-33600 Pessac, France.
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Sánchez-Véliz R, Carmona MJ, Otsuki DA, Freitas C, Benício A, Negri EM, Malbouisson LM. Impact of Cardiopulmonary Bypass on Respiratory Mucociliary Function in an Experimental Porcine Model. PLoS One 2015; 10:e0135564. [PMID: 26288020 PMCID: PMC4545835 DOI: 10.1371/journal.pone.0135564] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2014] [Accepted: 07/23/2015] [Indexed: 12/20/2022] Open
Abstract
Background The impact of cardiac surgery using cardiopulmonary bypass (CPB) on the respiratory mucociliary function is unknown. This study evaluated the effects of CPB and interruption of mechanical ventilation on the respiratory mucociliary system. Methods Twenty-two pigs were randomly assigned to the control (n = 10) or CPB group (n = 12). After the induction of anesthesia, a tracheostomy was performed, and tracheal tissue samples were excised (T0) from both groups. All animals underwent thoracotomy. In the CPB group, an aorto-bicaval CPB was installed and maintained for 90 minutes. During the CPB, mechanical ventilation was interrupted, and the tracheal tube was disconnected. A second tracheal tissue sample was obtained 180 minutes after the tracheostomy (T180). Mucus samples were collected from the trachea using a bronchoscope at T0, T90 and T180. Ciliary beat frequency (CBF) and in situ mucociliary transport (MCT) were studied in ex vivo tracheal epithelium. Mucus viscosity (MV) was assessed using a cone-plate viscometer. Qualitative tracheal histological analysis was performed at T180 tissue samples. Results CBF decreased in the CPB group (13.1 ± 1.9 Hz vs. 11.1 ± 2.1 Hz, p < 0.05) but not in the control group (13.1 ± 1 Hz vs. 13 ± 2.9 Hz). At T90, viscosity was increased in the CPB group compared to the control (p < 0.05). No significant differences were observed in in situ MCT. Tracheal histology in the CPB group showed areas of ciliated epithelium loss, submucosal edema and infiltration of inflammatory cells. Conclusion CPB acutely contributed to alterations in tracheal mucocilliary function.
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Affiliation(s)
- Rodrigo Sánchez-Véliz
- Laboratory of Anesthesiology (LIM08), University of Sao Paulo School of Medicine, Sao Paulo, Brazil
| | - Maria José Carmona
- Laboratory of Anesthesiology (LIM08), University of Sao Paulo School of Medicine, Sao Paulo, Brazil
| | - Denise Aya Otsuki
- Laboratory of Anesthesiology (LIM08), University of Sao Paulo School of Medicine, Sao Paulo, Brazil
| | - Claudia Freitas
- Laboratory of Anesthesiology (LIM08), University of Sao Paulo School of Medicine, Sao Paulo, Brazil
| | - Anderson Benício
- Cardiac Surgery Division, Heart Institute (InCor), University of Sao Paulo School of Medicine, Sao Paulo, Brazil
| | - Elnara Marcia Negri
- Department of Pathology, Experimental Air Pollution Laboratory, University of Sao Paulo School of Medicine, Sao Paulo, Brazil
| | - Luiz Marcelo Malbouisson
- Laboratory of Anesthesiology (LIM08), University of Sao Paulo School of Medicine, Sao Paulo, Brazil
- * E-mail:
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Yang Y, Sun L, Liu N, Hou X, Wang H, Jia M. Effects of Noninvasive Positive-Pressure Ventilation with Different Interfaces in Patients with Hypoxemia after Surgery for Stanford Type A Aortic Dissection. Med Sci Monit 2015; 21:2294-304. [PMID: 26250834 PMCID: PMC4532218 DOI: 10.12659/msm.893956] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Background Hypoxemia is a severe perioperative complication that can substantially increase intensive care unit and hospital stay and mortality. The aim of this study was to determine the effects of non-invasive positive-pressure ventilation (NIPPV) in patients with hypoxemia after surgery for Stanford type A aortic dissection, and to compare the effects of helmet and mask NIPPV. Material/Methods We recruited 40 patients who developed hypoxemia within 24 h after extubation after surgery for Stanford type A aortic dissection in the Beijing Anzhen Hospital. The patients were randomly divided into the helmet and mask NIPPV groups. The primary endpoints were blood oxygenation levels at 1 and 6 h after initiation and at the end of the treatment. The secondary endpoint was patient outcome, including mortality; incidence of pulmonary atelectasis, pneumonia, re-intubation, and sepsis; and length of ICU and hospital stays. Results NIPPV improved oxygenation in both groups. Compared with pretreatment levels, the oxygenation index (PaO2/FiO2), PaO2, PaCO2, and respiratory rate (RR) improved in the initial (0–1 h), maintenance (1–6 h), and end stages of the treatment (P<0.05). Compared with mask ventilation, helmet ventilation better improved pH, PaO2, SpO2, PaO2/FiO2, and decreased PaCO2 in the 3 stages (P<0.05). The incidence of major complications, including flatulence, intolerance, and facial pressure sores, was significantly lower with helmet ventilation. Conclusions NIPPV effectively improved oxygenation and reduced PaCO2 in patients who developed hypoxemia soon after extubation following surgery for Stanford type A aortic dissection. Compared with mask NIPPV, helmet NIPPV more rapidly increased PaO2 and reduced PaCO2, increased patient tolerance and comfort, and reduced complications.
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Affiliation(s)
- Yi Yang
- Center for Cardiac Intensive Care, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing, China (mainland)
| | - Lizhong Sun
- Department of Cardiovascular Surgery, Beijing Aortic Disease Center, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing, China (mainland)
| | - Nan Liu
- Center for Cardiac Intensive Care, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing, China (mainland)
| | - Xiaotong Hou
- Center for Cardiac Intensive Care, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing, China (mainland)
| | - Hong Wang
- Center for Cardiac Intensive Care, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing, China (mainland)
| | - Ming Jia
- Center for Cardiac Intensive Care, Beijing Anzhen Hospital, Capital Medical University, Beijing Institute of Heart Lung and Blood Vessel Diseases, Beijing, China (mainland)
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Badenes R, Lozano A, Belda FJ. Postoperative pulmonary dysfunction and mechanical ventilation in cardiac surgery. Crit Care Res Pract 2015; 2015:420513. [PMID: 25705516 PMCID: PMC4332756 DOI: 10.1155/2015/420513] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2014] [Revised: 01/15/2015] [Accepted: 01/17/2015] [Indexed: 12/19/2022] Open
Abstract
Postoperative pulmonary dysfunction (PPD) is a frequent and significant complication after cardiac surgery. It contributes to morbidity and mortality and increases hospitalization stay and its associated costs. Its pathogenesis is not clear but it seems to be related to the development of a systemic inflammatory response with a subsequent pulmonary inflammation. Many factors have been described to contribute to this inflammatory response, including surgical procedure with sternotomy incision, effects of general anesthesia, topical cooling, and extracorporeal circulation (ECC) and mechanical ventilation (VM). Protective ventilation strategies can reduce the incidence of atelectasis (which still remains one of the principal causes of PDD) and pulmonary infections in surgical patients. In this way, the open lung approach (OLA), a protective ventilation strategy, has demonstrated attenuating the inflammatory response and improving gas exchange parameters and postoperative pulmonary functions with a better residual functional capacity (FRC) when compared with a conventional ventilatory strategy. Additionally, maintaining low frequency ventilation during ECC was shown to decrease the incidence of PDD after cardiac surgery, preserving lung function.
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Affiliation(s)
- Rafael Badenes
- Department of Anesthesiology and Surgical Intensive Care, Hospital Clinic Universitari de Valencia, University of Valencia, 46010 Valencia, Spain
| | - Angels Lozano
- Department of Anesthesiology and Surgical Intensive Care, Hospital Clinic Universitari de Valencia, University of Valencia, 46010 Valencia, Spain
| | - F. Javier Belda
- Department of Anesthesiology and Surgical Intensive Care, Hospital Clinic Universitari de Valencia, University of Valencia, 46010 Valencia, Spain
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Neves FH, Carmona MJ, Auler JOC, Rodrigues RR, Rouby JJ, Malbouisson LMS. Cardiac compression of lung lower lobes after coronary artery bypass graft with cardiopulmonary bypass. PLoS One 2013; 8:e78643. [PMID: 24244331 PMCID: PMC3823859 DOI: 10.1371/journal.pone.0078643] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Accepted: 09/17/2013] [Indexed: 01/02/2023] Open
Abstract
Background Atelectasis is a major cause of hypoxemia after coronary artery bypass grafting (CABG) and is commonly ascribed to general anesthesia, high inspiratory oxygen concentration and cardiopulmonary bypass (CPB). The objective of this study was to evaluate the role of heart-induced pulmonary compression after CABG with CPB. Methods Seventeen patients without pre-operative cardiac failure who were scheduled for coronary artery bypass graft underwent pre- and postoperative thoracic computed tomography. The cardiac mass, the pressure exerted on the lungs by the right and left heart and the fraction of collapsed lower lobe segments below and outside of the heart limits were evaluated on a computed tomography section 1 cm above the diaphragmatic cupola. Results In the postoperative period, cardiac mass increased by 32% (117±31 g versus 155±35 g, p<0.001), leading to an increase in the pressure that was exerted on the lungs by the right (2.2±0.6 g.cm−2 versus 3.2±1.2 g.cm−2, p<0.05) and left heart (2.4±0.7 g.cm−2 versus 4.2±1.8 g.cm−2, p<0.001). The proportion of collapsed lung segments beneath the heart markedly increased [from 6.7% to 32.9% on the right side (p<0.001) and from 6.2% to 29% on the left side (p<0.001)], whereas the proportion of collapsed lung segments outside of the heart limits slightly increased [from 0.7% to 10.8% on the right side (p<0.001) and from 1.5% to 12.6% on the left side (p<0.001)]. Conclusion The pressure that is exerted by the heart on the lungs increased postoperatively and contributed to the collapse of subjacent pulmonary segments.
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Affiliation(s)
- Flávio H. Neves
- Divisão de Anestesia, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Maria J. Carmona
- Divisão de Anestesia, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - José O. C. Auler
- Divisão de Anestesia, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Roseny R. Rodrigues
- Divisão de Anestesia, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
| | - Jean Jacques Rouby
- Multidisciplinary Intensive Care Unit, Department of Anesthesiology, Hôpital de la Pitié-Salpêtrière, University Pierre et Marie Curie, Paris, France
| | - Luiz M. S. Malbouisson
- Divisão de Anestesia, Hospital das Clínicas da Faculdade de Medicina da Universidade de São Paulo, São Paulo, Brazil
- * E-mail:
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Hedenstierna G, Rothen HU. Respiratory function during anesthesia: effects on gas exchange. Compr Physiol 2013; 2:69-96. [PMID: 23728971 DOI: 10.1002/cphy.c080111] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Anaesthesia causes a respiratory impairment, whether the patient is breathing spontaneously or is ventilated mechanically. This impairment impedes the matching of alveolar ventilation and perfusion and thus the oxygenation of arterial blood. A triggering factor is loss of muscle tone that causes a fall in the resting lung volume, functional residual capacity. This fall promotes airway closure and gas adsorption, leading eventually to alveolar collapse, that is, atelectasis. The higher the oxygen concentration, the faster will the gas be adsorbed and the aleveoli collapse. Preoxygenation is a major cause of atelectasis and continuing use of high oxygen concentration maintains or increases the lung collapse, that typically is 10% or more of the lung tissue. It can exceed 25% to 40%. Perfusion of the atelectasis causes shunt and cyclic airway closure causes regions with low ventilation/perfusion ratios, that add to impaired oxygenation. Ventilation with positive end-expiratory pressure reduces the atelectasis but oxygenation need not improve, because of shift of blood flow down the lung to any remaining atelectatic tissue. Inflation of the lung to an airway pressure of 40 cmH2O recruits almost all collapsed lung and the lung remains open if ventilation is with moderate oxygen concentration (< 40%) but recollapses within a few minutes if ventilation is with 100% oxygen. Severe obesity increases the lung collapse and obstructive lung disease and one-lung anesthesia increase the mismatch of ventilation and perfusion. CO2 pneumoperitoneum increases atelectasis formation but not shunt, likely explained by enhanced hypoxic pulmonary vasoconstriction by CO2. Atelectasis may persist in the postoperative period and contribute to pneumonia.
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Affiliation(s)
- Göran Hedenstierna
- Department of Medical Sciences, Clinical Physiology, Uppsala University Hospital, Uppsala, Sweden.
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Alavi M, Pakrooh B, Mirmesdagh Y, Bakhshandeh. H, Babaee T, Hosseini S, Kargar F. The Effects of Positive Airway Pressure Ventilation during Cardiopulmonary Bypass on Pulmonary Function Following Open Heart Surgery. Res Cardiovasc Med 2013; 2:79-84. [PMID: 25478498 PMCID: PMC4253765 DOI: 10.5812/cardiovascmed.8129] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2012] [Revised: 12/04/2012] [Accepted: 12/17/2012] [Indexed: 11/24/2022] Open
Abstract
Background: Intrapulmonary shunt as a result of atelectasis following cardiac surgeries is an important and common postoperative complication that results into pulmonary dysfunction typically lasting more than a week following surgery. Different methods have been provided to prevent these complications. Objectives: In order to prevent postoperative pulmonary complications, investigation of the effectiveness of continuous positive airway pressure (CPAP) and intermittent mandatory ventilation (IMV) during cardiopulmonary bypass (CPB) in patients undergoing coronary artery bypass grafting (CABG). Materials and Methods: In this prospective interventional study, 300 patients, candidate for elective CABG (On-Pump), were randomly allocated to 3 groups: A, B, C. Group A (CPAP) patients received CPAP at 10 cm H2O during CPB. Group B (IMV) patients received IMV with a tidal volume of 2 cc/kg and respiratory rate of 15/min and group C (control) patients did not receive any type of ventilation during CPB. Other procedures were similar between groups. Arterial blood samples were taken at 8 moments and arterial blood gas (ABG) analysis were compared between groups. Chest x-rays after CABG were also evaluated with respect to atelectasis. Results: The demographic data were similar in between three groups. Graft number, pump time and preoperative ABGs were not significantly different. Postoperative PaO2 were significantly higher in the CPAP and IMV groups and (A-a) DO2 were significantly lower in these two groups, compared to the control group. Conclusions: In the present study, applying positive airway pressure methods (CPAP or IMV) during CPB was associated with better postoperative ABG measurements and (A-a) DO2.
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Affiliation(s)
- Mostafa Alavi
- Rajaie Cardiovascular Medical and Research Center, Tehran University of Medical Sciences, Tehran, IR Iran
| | - Behshid Pakrooh
- Rajaie Cardiovascular Medical and Research Center, Tehran University of Medical Sciences, Tehran, IR Iran
| | - Yalda Mirmesdagh
- Heart Valve Disease Research Center, Rajaie Cardiovascular Medical and Research Center, Tehran University of medical sciences, Tehran, IR Iran
| | - Hooman Bakhshandeh.
- Rajaie Cardiovascular Medical and Research Center, Tehran University of Medical Sciences, Tehran, IR Iran
| | - Touraj Babaee
- Rajaie Cardiovascular Medical and Research Center, Tehran University of Medical Sciences, Tehran, IR Iran
| | - Saeid Hosseini
- Heart Valve Disease Research Center, Rajaie Cardiovascular Medical and Research Center, Tehran University of medical sciences, Tehran, IR Iran
| | - Faranak Kargar
- Rajaie Cardiovascular Medical and Research Center, Tehran University of Medical Sciences, Tehran, IR Iran
- Corresponding author: Faranak Kargar, Rajaei Cardiovascular Medical and Research Center, Tehran University of Medical Sciences, Tehran, IR Iran. Tel/Fax: +98-2123922149, E-mail:
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Vidal Melo MF, Musch G, Kaczka DW. Pulmonary pathophysiology and lung mechanics in anesthesiology: a case-based overview. Anesthesiol Clin 2012; 30:759-784. [PMID: 23089508 PMCID: PMC3479443 DOI: 10.1016/j.anclin.2012.08.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Anesthesia, surgical requirements, and patients' unique pathophysiology all combine to make the accumulated knowledge of respiratory physiology and lung mechanics vital in patient management. This article take a case-based approach to discuss how the complex interactions between anesthesia, surgery, and patient disease affect patient care with respect to pulmonary pathophysiology and clinical decision making. Two disparate scenarios are examined: a patient with chronic obstructive pulmonary disease undergoing a lung resection, and a patient with coronary artery disease undergoing cardiopulmonary bypass. The impacts of important concepts in pulmonary physiology and respiratory mechanics on clinical management decisions are discussed.
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Affiliation(s)
| | - Guido Musch
- Harvard Medical School, Boston, MA
- Massachusetts General Hospital, Boston, MA
| | - David W. Kaczka
- Harvard Medical School, Boston, MA
- Beth Israel Deaconess Medical Center, Boston, MA
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Stratégie ventilatoire peropératoire en chirurgie cardiaque: vers une approche multimodale. ACTA ACUST UNITED AC 2012; 31 Suppl 1:S2-4. [DOI: 10.1016/s0750-7658(12)70044-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Tusman G, Böhm SH, Warner DO, Sprung J. Atelectasis and perioperative pulmonary complications in high-risk patients. Curr Opin Anaesthesiol 2012; 25:1-10. [DOI: 10.1097/aco.0b013e32834dd1eb] [Citation(s) in RCA: 129] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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Mazzeffi M, Khelemsky Y. Poststernotomy Pain: A Clinical Review. J Cardiothorac Vasc Anesth 2011; 25:1163-78. [DOI: 10.1053/j.jvca.2011.08.001] [Citation(s) in RCA: 98] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/18/2011] [Indexed: 11/11/2022]
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