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Nguyen TK, Nguyen VL, Nguyen TG, Mai DH, Nguyen NQ, Vu TA, Le AN, Nguyen QH, Nguyen CT, Nguyen DT. Lung-protective mechanical ventilation for patients undergoing abdominal laparoscopic surgeries: a randomized controlled trial. BMC Anesthesiol 2021; 21:95. [PMID: 33784987 PMCID: PMC8008676 DOI: 10.1186/s12871-021-01318-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Accepted: 03/17/2021] [Indexed: 11/10/2022] Open
Abstract
Background Pneumoperitoneum and Trendelenburg position in laparoscopic surgeries could contribute to postoperative pulmonary dysfunction. In recent years, intraoperative lung-protective mechanical ventilation (LPV) has been reportedly able to attenuate ventilator-induced lung injuries (VILI). Our objectives were to test the hypothesis that LPV could improve intraoperative oxygenation function, pulmonary mechanics and early postoperative atelectasis in laparoscopic surgeries. Methods In this randomized controlled clinical trial, 62 patients indicated for elective abdominal laparoscopic surgeries with an expected duration of greater than 2 h were randomly assigned to receive either lung-protective ventilation (LPV) with a tidal volume (Vt) of 7 ml kg− 1 ideal body weight (IBW), 10 cmH2O positive end-expiratory pressure (PEEP) combined with regular recruitment maneuvers (RMs) or conventional ventilation (CV) with a Vt of 10 ml kg− 1 IBW, 0 cmH2O in PEEP and no RMs. The primary endpoints were the changes in the ratio of PaO2 to FiO2 (P/F). The secondary endpoints were the differences between the two groups in PaO2, alveolar-arterial oxygen gradient (A-aO2), intraoperative pulmonary mechanics and the incidence of atelectasis detected on chest x-ray on the first postoperative day. Results In comparison to CV group, the intraoperative P/F and PaO2 in LPV group were significantly higher while the intraoperative A-aO2 was clearly lower. Cdyn and Cstat at all the intraoperative time points in LPV group were significantly higher compared to CV group (p < 0.05). There were no differences in the incidence of atelectasis on day one after surgery between the two groups. Conclusions Lung protective mechanical ventilation significantly improved intraoperative pulmonary oxygenation function and pulmonary compliance in patients experiencing various abdominal laparoscopic surgeries, but it could not ameliorate early postoperative atelectasis and oxygenation function on the first day after surgery. Trial registration https://www.clinicaltrials.gov/identifier: NCT04546932 (09/05/2020).
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Affiliation(s)
- Trung Kien Nguyen
- Center of Emergency, Critical Care Medicine and Clinical Toxicology, 103 Military Hospital, Vietnam Military Medical University, 261 Phung Hung road, Ha Dong District, Hanoi City, Vietnam
| | - Viet Luong Nguyen
- Critical Care Unit, National Burn Hospital, Vietnam Military Medical University, Hanoi, Vietnam
| | - Truong Giang Nguyen
- Department of Cardiothoracic surgery, 103 Military Hospital, Vietnam Military Medical University, Hanoi, Vietnam
| | - Duc Hanh Mai
- Department of Anesthesia and Pain Medicine, 103 Military Hospital, Vietnam Military Medical University, Hanoi, Vietnam
| | - Ngoc Quynh Nguyen
- Department of Anesthesia and Pain Medicine, Vietnam National Cancer Hospital, Hanoi, Vietnam
| | - The Anh Vu
- Department of Anesthesia and Pain Medicine, 103 Military Hospital, Vietnam Military Medical University, Hanoi, Vietnam.
| | - Anh Nguyet Le
- Department of Urology, 103 Military Hospital, Vietnam Military Medical University, Hanoi, Vietnam
| | - Quang Huy Nguyen
- Center of Emergency, Critical Care Medicine and Clinical Toxicology, 103 Military Hospital, Vietnam Military Medical University, 261 Phung Hung road, Ha Dong District, Hanoi City, Vietnam
| | - Chi Tue Nguyen
- Center of Emergency, Critical Care Medicine and Clinical Toxicology, 103 Military Hospital, Vietnam Military Medical University, 261 Phung Hung road, Ha Dong District, Hanoi City, Vietnam
| | - Dang Thu Nguyen
- Department of Anesthesia and Pain Medicine, 103 Military Hospital, Vietnam Military Medical University, Hanoi, Vietnam
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Protective mechanical ventilation in the obese patient. Int Anesthesiol Clin 2021; 58:53-57. [PMID: 32404605 DOI: 10.1097/aia.0000000000000284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Abushady NM, Awad HAS, Kamel DR, Fouda EM, Ahmed NT, Dawoud MO. Role of lung ultrasound in the assessment of recruitment maneuvers in ventilated preterm neonates with respiratory distress syndrome and its correlation with tracheal IL-6 levels: A randomized controlled trial. J Neonatal Perinatal Med 2020; 14:369-374. [PMID: 33325403 DOI: 10.3233/npm-200605] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND This study's aim is to evaluate lung ultrasound (LUS) efficacy in detecting opening and closing lung pressures and its correlation with the tracheal interleukin 6 (IL-6) level. METHOD This single-blinded randomized controlled study was done at Ain Shams University Children's Hospital neonatal intensive care units, Egypt. It consists of 44 mechanically ventilated preterm neonates with Respiratory Distress Syndrome (RDS). Initial LUS assessment was done followed by randomization to one of 2 groups; group I: 22 patients underwent LUS guided RM and group II: 22 patients underwent non-ultrasound guided RM. Tracheal IL-6 level was measured before and after RM in both groups. RESULTS The LUS scores showed a sensitivity of 86.7%, specificity of 62.10% and accuracy of 70.45% at the cut-off point >B1 grade. After RM, there was a higher percentage of changes in mean airway pressure (p = 0.03), FiO2 (p = 0.01), PaO2/FiO2 ratio (p = 0.01), and IL-6 (p < 0.01) in group I. The duration of oxygen requirement (6 vs.13.5 days, p = 0.01), invasive ventilation (3 vs.5.5 days, p = 0.03), non-invasive ventilation (2.5 vs. 5 days, p = 0.02) and NICU stay (21.5 vs. 42.5 days, p = 0.03) were less in group I. A positive correlation is found between reaeration score and the duration of O2 requirement (p = 0.002), duration of invasive ventilation (p = 0.001), NICU length of stay (p = 0.002) and negative correlation with PaO2/FiO2 ratio before RM (p = 0.012). The best cut-off point for the reaeration score is >21 with a sensitivity of 75%, specificity of 71.43% and area under the curve of 78.1%. CONCLUSION LUS-guided RM achieved earlier lowest FiO2, shorter O2 dependency, lesser NICU stay and marked decrease in lung inflammation by decreasing atelectotrauma and shortening the duration of invasive ventilation.
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Affiliation(s)
- N M Abushady
- Department of Pediatrics, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - H A S Awad
- Department of Pediatrics, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - D R Kamel
- Department of Pediatrics, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - E M Fouda
- Department of Pediatrics, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - N T Ahmed
- Department of Radiology, Faculty of Medicine, Ain Shams University, Cairo, Egypt
| | - M O Dawoud
- Department of Pediatrics, Faculty of Medicine, Ain Shams University, Cairo, Egypt
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Nakane M. Biological effects of the oxygen molecule in critically ill patients. J Intensive Care 2020; 8:95. [PMID: 33317639 PMCID: PMC7734465 DOI: 10.1186/s40560-020-00505-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Accepted: 11/10/2020] [Indexed: 02/06/2023] Open
Abstract
The medical use of oxygen has been widely and frequently proposed for patients, especially those under critical care; however, its benefit and drawbacks remain controversial for certain conditions. The induction of oxygen therapy is commonly considered for either treating or preventing hypoxia. Therefore, the concept of different types of hypoxia should be understood, particularly in terms of their mechanism, as the effect of oxygen therapy principally varies by the physiological characteristics of hypoxia. Oxygen molecules must be constantly delivered to all cells throughout the human body and utilized effectively in the process of mitochondrial oxidative phosphorylation, which is necessary for generating energy through the formation of adenosine triphosphate. If the oxygen availability at the cellular level is inadequate for sustaining the metabolism, the condition of hypoxia which is characterized as heterogeneity in tissue oxygen tension may develop, which is called dysoxia, a more physiological concept that is related to hypoxia. In such hypoxic patients, repetitive measurements of the lactate level in blood are generally recommended in order to select the adequate therapeutic strategy targeting a reduction in lactate production. Excessive oxygen, however, may actually induce a hyperoxic condition which thus can lead to harmful oxidative stress by increasing the production of reactive oxygen species, possibly resulting in cellular dysfunction or death. In contrast, the human body has several oxygen-sensing mechanisms for preventing both hypoxia and hyperoxia that are employed to ensure a proper balance between the oxygen supply and demand and prevent organs and cells from suffering hyperoxia-induced oxidative stress. Thus, while the concept of hyperoxia is known to have possible adverse effects on the lung, the heart, the brain, or other organs in various pathological conditions of critically ill patients, and no obvious evidence has yet been proposed to totally support liberal oxygen supplementation in any subset of critically ill patients, relatively conservative oxygen therapy with cautious monitoring appears to be safe and may improve the outcome by preventing harmful oxidative stress resulting from excessive oxygen administration. Given the biological effects of oxygen molecules, although the optimal target levels remain controversial, unnecessary oxygen administration should be avoided, and exposure to hyperoxemia should be minimized in critically ill patients.
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Affiliation(s)
- Masaki Nakane
- Department of Emergency and Critical Care Medicine, Yamagata University Hospital, 2-2-2 Iida-nishi, Yamagata, 990-9585, Japan.
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Changes in diaphragmatic excursion and lung compliance during gynaecologic surgery: open laparotomy versus laparoscopy-a prospective observational study. Sci Rep 2020; 10:21458. [PMID: 33293568 PMCID: PMC7722851 DOI: 10.1038/s41598-020-78375-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2020] [Accepted: 11/17/2020] [Indexed: 12/25/2022] Open
Abstract
This study compared the effects of open versus laparoscopic radical hysterectomy on intraoperative diaphragmatic excursion and lung compliance. We enrolled 20 women per group; Group O’s members underwent open radical hysterectomy, while Group L’s members underwent laparoscopic radical hysterectomy. Diaphragmatic excursion was measured by assessing tidal ventilation using M-mode ultrasonography before intubation (T0), after intubation with mechanical ventilation (T1), 90 min after incision (T2), and at the end of the operation with recovery of muscle relaxation (T3). Peak inspiratory pressure and static lung compliance were measured using an anaesthesia machine combined with a ventilator. Diaphragmatic excursion was significantly lower in Group L than in Group O at T2 (5.3 ± 1.7 mm vs. 7.7 ± 2.0 mm, P < 0.001) and T3 (8.4 ± 1.9 vs. 10.4 ± 2.4, P = 0.011). Impaired diaphragmatic excursion at T3 (< 10 mm under mechanical ventilation) occurred in 15 patients (83.3%) in Group L and seven (38.9%) in Group O (P = 0.006). Changes over time in peak inspiratory pressure and static lung compliance differed significantly between the two groups (P < 0.001 each). Laparoscopic radical hysterectomy decreased diaphragmatic excursion and static lung compliance significantly more than open radical hysterectomy. Korean clinical trial number: Korean Clinical Trials Registry (KCT0004477) (Date of registration: November 18 2019) (https://cris.nih.go.kr/cris/search/search_result_st01_en.jsp?seq=14963<ype=&rtype=).
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Li XF, Jiang D, Jiang YL, Yu H, Zhang MQ, Jiang JL, He LL, Yu H. Comparison of low and high inspiratory oxygen fraction added to lung-protective ventilation on postoperative pulmonary complications after abdominal surgery: A randomized controlled trial. J Clin Anesth 2020; 67:110009. [DOI: 10.1016/j.jclinane.2020.110009] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Revised: 07/23/2020] [Accepted: 07/24/2020] [Indexed: 12/27/2022]
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Lee JH, Ji SH, Jang YE, Kim EH, Kim JT, Kim HS. Application of a High-Flow Nasal Cannula for Prevention of Postextubation Atelectasis in Children Undergoing Surgery: A Randomized Controlled Trial. Anesth Analg 2020; 133:474-482. [PMID: 33181560 DOI: 10.1213/ane.0000000000005285] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
BACKGROUND General anesthesia-induced atelectasis is common, and persistent postoperative atelectasis is associated with pulmonary complications. We aimed to evaluate the preventive effects of a high-flow nasal cannula (HFNC) on postoperative atelectasis and respiratory complications in infants and small children. METHODS In this prospective randomized controlled trial, children (≤2 years) receiving general anesthesia (>2 hours) were randomized into the control and HFNC groups. At the end of the surgery, the first lung ultrasound evaluation was performed in both groups. In the postanesthetic care unit (PACU), the control group received conventional oxygen therapy, while the HFNC group received oxygen via HFNC, with a flow rate of 2 L kg-1 min-1. Before discharge to the ward, a second lung ultrasound examination was performed. The primary outcome was the lung ultrasound score at PACU discharge. The secondary outcomes included the lung ultrasound score at the end of surgery, the incidence of significant atelectasis at PACU discharge, and other postoperative outcomes. RESULTS Lung ultrasound score and the incidence of atelectasis at the end of surgery did not differ significantly between the control (n = 38) and HFNC (n = 40) groups. After staying in the PACU, both groups showed a reduced lung ultrasound score and atelectasis incidence. However, the HFNC group had a significantly lower consolidation score than the control group (0; interquartile range [IQR] = 0-1 vs 3; IQR = 2-4; P< .001). Additionally, none of the patients had significant atelectasis in the HFNC group, compared to 6 patients in the control group (0% vs 15.8%; odds ratio [OR] = 0.444; 95% confidence interval for OR, 0.343-0.575; P = .011). Incidence of desaturation (oxygen saturation [Spo2] ≤ 95%), postoperative complications, and the length of hospital stay did not differ between the groups. CONCLUSIONS Preventive use of HFNC after surgery improves the lung ultrasound score and reduces postoperative atelectasis compared to conventional oxygen therapy in infants and small children.
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Affiliation(s)
- Ji-Hyun Lee
- From the Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
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Xie C, Sun K, You Y, Ming Y, Yu X, Yu L, Huang J, Yan M. Feasibility and efficacy of lung ultrasound to investigate pulmonary complications in patients who developed postoperative Hypoxaemia-a prospective study. BMC Anesthesiol 2020; 20:220. [PMID: 32873237 PMCID: PMC7461251 DOI: 10.1186/s12871-020-01123-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Accepted: 08/09/2020] [Indexed: 12/18/2022] Open
Abstract
Background Postoperative pulmonary complications (PPCs) and hypoxaemia are associated with morbidity and mortality. We aimed to evaluate the feasibility and efficacy of lung ultrasound (LUS) to diagnose PPCs in patients suffering from hypoxaemia after general anaesthesia and compare the results to those of thoracic computed tomography (CT). Methods Adult patients who received general anaesthesia and suffered from hypoxaemia in the postanaesthesia care unit (PACU) were analysed. Hypoxaemia was defined as an oxygen saturation measured by pulse oximetry (SPO2) less than 92% for more than 30 s under ambient air conditions. LUS was performed by two trained anaesthesiologists once hypoxaemia occurred. After LUS examination, each patient was transported to the radiology department for thoracic CT scan within 1 h before returning to the ward. Results From January 2019 to May 2019, 113 patients (61 men) undergoing abdominal surgery (45 patients, 39.8%), video-assisted thoracic surgery (31 patients, 27.4%), major orthopaedic surgery (17 patients, 15.0%), neurosurgery (10 patients, 8.8%) or other surgery (10 patients, 8.8%) were included. CT diagnosed 327 of 1356 lung zones as atelectasis, while LUS revealed atelectasis in 311 of the CT-confirmed zones. Pneumothorax was detected by CT scan in 75 quadrants, 72 of which were detected by LUS. Pleural effusion was diagnosed in 144 zones on CT scan, and LUS detected 131 of these zones. LUS was reliable in diagnosing atelectasis (sensitivity 98.0%, specificity 96.7% and diagnostic accuracy 97.2%), pneumothorax (sensitivity 90.0%, specificity 98.9% and diagnostic accuracy 96.7%) and pleural effusion (sensitivity 92.9%, specificity 96.0% and diagnostic accuracy 95.1%). Conclusions Lung ultrasound is feasible, efficient and accurate in diagnosing different aetiologies of postoperative hypoxia in healthy-weight patients in the PACU. Trial registration Current Controlled Trials NCT03802175, 2018/12/05, www.ClinicalTrials.gov
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Affiliation(s)
- Chen Xie
- Department of Anesthesiology and Pain Medicine, the Second Affiliated Hospital, School of Medicine, Zhejiang University, Jiefang Road 88th, Hangzhou, 310016, People's Republic of China
| | - Kai Sun
- Department of Anesthesiology and Pain Medicine, the Second Affiliated Hospital, School of Medicine, Zhejiang University, Jiefang Road 88th, Hangzhou, 310016, People's Republic of China
| | - Yueyang You
- Department of Anesthesiology and Pain Medicine, the Second Affiliated Hospital, School of Medicine, Zhejiang University, Jiefang Road 88th, Hangzhou, 310016, People's Republic of China
| | - Yue Ming
- Department of Anesthesiology and Pain Medicine, the Second Affiliated Hospital, School of Medicine, Zhejiang University, Jiefang Road 88th, Hangzhou, 310016, People's Republic of China
| | - Xiaoling Yu
- Department of Anesthesiology and Pain Medicine, the Second Affiliated Hospital, School of Medicine, Zhejiang University, Jiefang Road 88th, Hangzhou, 310016, People's Republic of China
| | - Lina Yu
- Department of Anesthesiology and Pain Medicine, the Second Affiliated Hospital, School of Medicine, Zhejiang University, Jiefang Road 88th, Hangzhou, 310016, People's Republic of China
| | - Jiapeng Huang
- Department of Anesthesiology & Perioperative Medicine, University of Louisville, Louisville, KY, 40202, USA
| | - Min Yan
- Department of Anesthesiology and Pain Medicine, the Second Affiliated Hospital, School of Medicine, Zhejiang University, Jiefang Road 88th, Hangzhou, 310016, People's Republic of China. .,Department of Anesthesiology and Pain Medicine, Second Affiliated Hospital, Zhejiang University School of Medicine, 88 Jiefang Road, Hangzhou, 310009, NO, China.
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Ralston SL, Lonhart JA, Schroeder AR. Too Much of a Good Thing: Hyperoxia and Pediatric Respiratory Illnesses. Pediatrics 2020; 146:peds.2019-3343. [PMID: 32719108 DOI: 10.1542/peds.2019-3343] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/02/2020] [Indexed: 11/24/2022] Open
Affiliation(s)
- Shawn L Ralston
- School of Medicine, Johns Hopkins University, Baltimore, Maryland; and
| | - Julia A Lonhart
- School of Medicine, Stanford University, Palo Alto, California
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Miller DL, Dou C, Raghavendran K, Dong Z. Variation of Diagnostic Ultrasound-Induced Pulmonary Capillary Hemorrhage with Fraction of Inspired Oxygen. ULTRASOUND IN MEDICINE & BIOLOGY 2020; 46:1978-1985. [PMID: 32423571 PMCID: PMC7329604 DOI: 10.1016/j.ultrasmedbio.2020.04.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 03/25/2020] [Accepted: 04/02/2020] [Indexed: 05/08/2023]
Abstract
Pulmonary capillary hemorrhage induction by diagnostic ultrasound (DUS-PCH) was investigated with respect to the influence of the fraction of inspired oxygen (FiO2). Sprague-Dawley rats were anesthetized with Telazol only (TO) or Telazol plus xylazine (TX), which can enhance DUS-PCH. A linear array probe (10 L, GE Vivid 7 Dimension) was used in B-mode at 7.5 MHz to expose the right lung. FiO2 at 10%, 20%, 60% and 100% was delivered through a nose cone. On the ultrasound images, the PCH effect was observed as growing comet tail (B-line) artifacts and as subpleural consolidated segments at higher FiO2. PCH for TO with 20% and 60% FiO2 were significantly greater (p < 0.05) than for the 10% FiO2. PCHs with TX at 10% and 20% FiO2 were significantly greater (p < 0.02) than those for TO anesthesia. Added xylazine and high percentages of FiO2 reduced PCH thresholds, but xylazine and high percentages of FiO2 together did not lower the PCH threshold further. The lowest threshold observed, 1.4 MPa, corresponded to an in situ mechanical index of 0.5.
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Affiliation(s)
- Douglas L Miller
- Department of Radiology, University of Michigan Health System, Ann Arbor, Michigan, USA.
| | - Chunyan Dou
- Department of Radiology, University of Michigan Health System, Ann Arbor, Michigan, USA
| | - Krishnan Raghavendran
- Department of Surgery, University of Michigan Health System, Ann Arbor, Michigan, USA
| | - Zhihong Dong
- Department of Radiology, University of Michigan Health System, Ann Arbor, Michigan, USA
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Hassan BEDE, El-Shaer AN, Elbeialy MAK, Ismail SAM. Comparison between volume-controlled ventilation and pressure-controlled volume-guaranteed ventilation in postoperative lung atelectasis using lung ultrasound following upper abdominal laparotomies: a prospective randomized study. AIN-SHAMS JOURNAL OF ANESTHESIOLOGY 2020. [PMCID: PMC7358998 DOI: 10.1186/s42077-020-00076-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Background Atelectasis is a common side effect of general anesthesia. Prevention of lung atelectasis, carbon dioxide retention, and chest infection would improve the quality of medical care and decrease hospital stay and costs. The aim of this study was to compare the effects of volume-controlled ventilation (VCV) and pressure-controlled volume-guaranteed ventilation (PCVG) on postoperative lung atelectasis using lung ultrasound (LUS) following upper abdominal laparotomies. Results Sixty patients (male and female) scheduled for upper abdominal laparotomies. They were randomly allocated into two equal groups: Group A (n = 30): received intraoperative volume-controlled ventilation (VCV) mode and group (n = 30): received intraoperative pressure-controlled ventilation volume-guaranteed (PCV-VG) mode. Arterial blood samples were obtained immediately after extubation, and 30, 120, 240, and 360 min postextubation. Lung ultrasound was done intraoperatively at 30 min from induction, immediate, and 120 and after 360 min postoperatively. There was difference between two groups favoring PCV-VG group but that difference failed to be statically significant regarding arterial partial pressure of oxygen (PaO2) and arterial carbon dioxide tension (PaCo2) between the two groups in preoperative, immediate postoperative, and 120, 240, and 360 min postoperative. Arterial oxygen saturation (SaO2) was significantly lower among patients in the VCV group immediate postextubation compared with patients in group PCV-VG (p value = 0.009*). Although signs of atelectasis were low in group B, 36.7% of the patients showed normal lung ultrasound, 63.3% showed various abnormalities, 46.7% showed the presence of lung pulse (vertical rhythmic movement synchronous with cardiac pulsation through motionless lung), and 46.7% showed B lines (vertical lines indicate abnormal lung aeration), while 30% of the patients showed the absence of A-lines (indicates the absence of lung sliding and abnormal lung aeration). Also, some patients demonstrated more than one sign. However, there was no a significant difference between the two groups both showed atelectasis immediate, 2 h and 6 h postoperatively. Conclusion PCV-VG offered no significant advantage over VCV regarding the occurrence of the postoperative atelectasis. However, we prefer to use PCV-VG as postoperative hypoxia and atelectasis was much less in that mode. Further, large-scale studies are required to confirm these findings and to establish a definite conclusion.
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Udayasankar M, Udupi S, Shenoy A. Comparison of perioperative patient comfort with 'enhanced recovery after surgery (ERAS) approach' versus 'traditional approach' for elective laparoscopic cholecystectomy. Indian J Anaesth 2020; 64:316-321. [PMID: 32489207 PMCID: PMC7259410 DOI: 10.4103/ija.ija_782_19] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 11/22/2019] [Accepted: 02/22/2020] [Indexed: 12/02/2022] Open
Abstract
Background: Perioperative anxiety, hunger, thirst, fatigue, pain along with nausea and vomiting can influence a patient's recovery after surgery. We aimed to compare 'enhanced recovery after surgery' (ERAS) protocol with a traditional perioperative approach to evaluate a patient's recovery after elective laparoscopic cholecystectomy. Methods: A prospective randomised controlled study was conducted after institutional ethical clearance on 50 patients undergoing elective laparoscopic cholecystectomy, and divided equally into two groups. In group 1 (traditional); standard fasting guidelines and routine perioperative management was implemented. In group 2 (ERAS); patients received appropriate multimedia information about surgery and anaesthesia besidecarbohydrate loading with tender coconut water on the previous night and on the morning of surgery. Standard guidelines of fasting for solids were followed. Intraoperatively, goal-directed fluid therapy and an inspired oxygen concentration of 60% were administered. Postoperatively, early diet and mobilisation were initiated. The primary outcome was the assessment of perioperative anxiety. Hunger, thirst, fatigue, pain, nausea, vomiting and overall perioperative experience were also evaluated. Results: ERAS group had reduced anxiety prior to surgery: median (interquartile range) 3 (3–4) vs 2 (2–3) (P = 0.003), and at 6 h postoperatively: 4 (3–6) vs 3 (1–4) (P = 0.001). Hunger, thirst and fatigue (P < 0.01) were also decreased with better overall perioperative experience (5 [4–5] vs 6 [5–7], P = 0.004). Pain, nausea, vomiting and blood glucose were similar between the groups. Conclusion: 'ERAS approach reduces anxiety in addition to hunger, thirst and fatigue with enhanced overall perioperative comfort in patients undergoing laparoscopic cholecystectomy.
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Affiliation(s)
- Madhumita Udayasankar
- Department of Anaesthesiology, Kasturba Medical College and Hospital, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Sandesh Udupi
- Department of Anaesthesiology, Kasturba Medical College and Hospital, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, India
| | - Anitha Shenoy
- Department of Anaesthesiology, Kasturba Medical College and Hospital, Manipal, Manipal Academy of Higher Education, Manipal, Karnataka, India
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Korman B, Dash RK, Peyton PJ. Elucidating the roles of solubility and ventilation-perfusion mismatch in the second gas effect using a two-step model of gas exchange. J Appl Physiol (1985) 2020; 128:1587-1593. [DOI: 10.1152/japplphysiol.00049.2020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Gas exchange in the lung can always be represented as the sum of two components: gas exchange at constant volume followed by gas exchange on volume correction. Using this sequence to study the second gas effect, low gas solubility and increased ventilation-perfusion mismatch are shown to act together to enhance second gas uptake. While appearing to contravene classical concepts of gas exchange, a detailed theoretical analysis shows it is fully consistent with these concepts.
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Affiliation(s)
- Ben Korman
- Department of Anaesthesia and Pain Medicine, Royal Perth Hospital, Perth, Western Australia, Australia
| | - Ranjan K. Dash
- Departments of Biomedical Engineering and Physiology, Medical College of Wisconsin, Wisconsin
| | - Philip J. Peyton
- Anaesthesia, Perioperative, and Pain Medicine Unit, Melbourne Medical School, University of Melbourne, Department of Anaesthesia, Austin Health, Heidelberg, Victoria, Australia
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Li P, Gu L, Bian Q, Tan J, Jiao D, Wu F, Xu Z, Wang L. Effects of prostaglandin E 1 nebulization of ventilated lung under 60%O 2 one lung ventilation on patients' oxygenation and oxidative stress: a randomised controlled trial. Respir Res 2020; 21:113. [PMID: 32404117 PMCID: PMC7218546 DOI: 10.1186/s12931-020-01380-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Accepted: 05/01/2020] [Indexed: 11/10/2022] Open
Abstract
Background High FiO2 during one-lung ventilation (OLV) can improve oxygenation, but increase the risk of atelectasis and oxidative stress. The aim of this study was to analyze whether Prostaglandin E1 (PGE1) can improve oxygenation and attenuate oxidative stress during OLV under a lower FiO2. Method Ninety patients selectively undergoing thoracotomy for esophageal cancer were randomly divided into three groups (n = 30/group): Group P (FiO2 = 0.6, inhaling PGE1 0.1 μg/kg), Group L (FiO2 = 0.6) and Group C (FiO2 = 1.0). The primary outcomes were oxygenation and pulmonary shunt during OLV. Secondary outcomes included haemodynamics, respiratory mechanics and oxidative stress in serum. Results Patients in Group P had significantly higher PaO2 and lower shunt fraction in 30 min of OLV compared with Group L. Compared with Group C, patients in Group P had similar levels of PaO2/FiO2 in 60 min and higher levels of PaO2/FiO2 at 2 h during OLV. The levels of PvO2 and SvO2 in Group P and Group L were significantly lower than Group C. Patients in Group P and Group L had significantly higher levels of superoxide dismutase and lower levels of malondialdehyde than Group C. No significant differences were found in SPO2, ETCO2, PaCO2, Paw, HR and MAP among the three groups. The complications in Group C were significantly higher than another two groups. Conclusion PGE1 can maintain adequate oxygenation in patients with low FiO2 (0.6) during OLV. Reducing FiO2 to 0.6 during OLV can decrease the levels of oxidative stress and complications after OLV. Trial registration chictr.org.cn identifier: ChiCTR1800017100.
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Affiliation(s)
- Pengyi Li
- Department of Anesthesiology, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical University, No. 42 Baiziting, Xuanwu District, Nanjing, 210009, China
| | - Lianbing Gu
- Department of Anesthesiology, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical University, No. 42 Baiziting, Xuanwu District, Nanjing, 210009, China
| | - Qingming Bian
- Department of Anesthesiology, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical University, No. 42 Baiziting, Xuanwu District, Nanjing, 210009, China
| | - Jing Tan
- Department of Anesthesiology, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical University, No. 42 Baiziting, Xuanwu District, Nanjing, 210009, China
| | - Dian Jiao
- Department of Anesthesiology, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical University, No. 42 Baiziting, Xuanwu District, Nanjing, 210009, China
| | - Fei Wu
- Renji Clinical School, Shanghai Jiao Tong University School of Medicine, Shanghai, 200000, China
| | - Zeping Xu
- Department of Anesthesiology, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical University, No. 42 Baiziting, Xuanwu District, Nanjing, 210009, China
| | - Lijun Wang
- Department of Anesthesiology, Jiangsu Cancer Hospital & Jiangsu Institute of Cancer Research & The Affiliated Cancer Hospital of Nanjing Medical University, No. 42 Baiziting, Xuanwu District, Nanjing, 210009, China.
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65
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Effect of regular alveolar recruitment on intraoperative atelectasis in paediatric patients ventilated in the prone position: a randomised controlled trial. Br J Anaesth 2020; 124:648-655. [DOI: 10.1016/j.bja.2020.01.022] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Revised: 01/26/2020] [Accepted: 01/27/2020] [Indexed: 02/07/2023] Open
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Effect of an ultrasound-guided lung recruitment manoeuvre on postoperative atelectasis in children: A randomised controlled trial. Eur J Anaesthesiol 2020; 37:719-727. [PMID: 32068572 DOI: 10.1097/eja.0000000000001175] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
BACKGROUND Ultrasound-guided alveolar recruitment, regardless of the technique, could be more effective because it facilitates real-time monitoring of the expansion of collapsed alveoli. OBJECTIVES To evaluate and compare the effects of an ultrasound-guided lung recruitment manoeuvre with those of a conventional recruitment manoeuvre on the occurrence of postoperative atelectasis and clinical outcomes in children. DESIGN A randomised controlled trial. SETTING Tertiary children's hospital. PATIENTS Children aged 6 years or less. INTERVENTION Children scheduled for simple, superficial procedures underwent lung ultrasound after tracheal intubation (T1), at the end of surgery (T2) and before discharge from the postanaesthesia care unit (T3). Following lung ultrasound evaluation at T1 and T2, the conventional recruitment manoeuvre with a maximal airway pressure of 30 cmH2O was performed in the control group, while an ultrasound-guided recruitment manoeuvre was performed in the ultrasound group. MAIN OUTCOME MEASURES The primary outcome was the incidence of significant atelectasis at T3. RESULTS The incidences of atelectasis at T3 were 20.9 and 11.6% in the control (n = 43) and ultrasound groups (n = 43), respectively (odds ratio [OR], 2.012; 95% confidence interval [CI], 0.614 to 6.594; P = 0.249). The lung ultrasound scores were better in the ultrasound group than in the control group at T2 and T3, and the incidence of postoperative desaturation was higher in the control group than in the ultrasound group (16.3 vs. 2.3%; OR, 0.12; 95% CI 0.01 to 1.04; P = 0.05). The median airway pressure required for full lung expansion in the ultrasound group was 35 cmH2O at T1 and T2. Other postoperative outcomes were similar between groups. CONCLUSION Ultrasound-guided lung recruitment may be more effective than the conventional procedure in terms of the prevention of intra-operative atelectasis and postoperative desaturation; however, its beneficial effects on postoperative atelectasis remain unclear. An inspiratory airway pressure of more than 30 cmH2O is required for full recruitment of alveoli in healthy children. CLINICAL TRIAL REGISTRY ClinicalTrials.gov (NCT03453762).
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67
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Van Hecke D, Bidgoli JS, Van der Linden P. Does Lung Compliance Optimization Through PEEP Manipulations Reduce the Incidence of Postoperative Hypoxemia in Laparoscopic Bariatric Surgery? A Randomized Trial. Obes Surg 2020; 29:1268-1275. [PMID: 30612327 DOI: 10.1007/s11695-018-03662-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
BACKGROUND In obese patients (OP), the best intraoperative ventilation strategy remains to be defined. Dynamic lung compliance (Cdyn) and dead space fraction are indicators of efficient ventilation at an optimal positive end-expiratory pressure (PEEP). Herein, we investigated whether intraoperative dynamic lung compliance optimization through PEEP manipulations affects the incidence of postoperative hypoxemia (SpO2 < 90%) in OP undergoing laparoscopic bariatric surgery (LBS). METHODS This was a single-center, prospective, randomized controlled study conducted from July 2013 to December 2015. After obtaining institutional review board approval and informed consent, 100 OP undergoing LBS under volume-controlled ventilation (tidal volume 8 mL/kg of ideal body weight) were randomized according to the PEEP level maintained during the surgery. In the control group, a PEEP of 10 cm H2O was maintained, while in the intervention group, the PEEP was adapted to achieve the best dynamic lung compliance. Anesthesia and analgesia were standardized. The patients received supplemental nasal oxygen on the first postoperative day and were monitored up to the second postoperative day with a portable pulse oximeter. RESULTS Demographics were similar between groups. There was no difference in the incidence of hypoxemia during the first 2 postoperative days (control: 1.3%; intervention: 2.1%; p = 0.264). CONCLUSIONS The incidence of postoperative hypoxemia was not reduced by an open-lung approach with protective ventilation strategy in obese patients undergoing LBS. A pragmatic application of a PEEP level of 10 cm H2O was comparable to individual PEEP titration in these patients. TRIAL REGISTRATION Clinicaltrials.gov identifier, NCT02579798; https://clinicaltrials.gov/ct2/show/NCT02579798.
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Affiliation(s)
- Delphine Van Hecke
- Department of Anaesthesiology, CUB Erasme, Université Libre de Bruxelles, 1070, Brussels, Belgium.
| | - Javad S Bidgoli
- Department of Anaesthesiology, CHU Brugmann-HUDERF, Université Libre de Bruxelles, 1090, Brussels, Belgium
| | - Philippe Van der Linden
- Department of Anaesthesiology, CHU Brugmann-HUDERF, Université Libre de Bruxelles, 1090, Brussels, Belgium
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68
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Margolis RD, Gamble SJ, Hoang JJ, Nagoshi M. Prevention of atelectasis secondary to propofol-based general anesthesia by application of continuous positive airway pressure to children with neuroblastoma undergoing computerized tomography: a quality improvement project. JA Clin Rep 2019; 5:78. [PMID: 32026153 PMCID: PMC6967054 DOI: 10.1186/s40981-019-0297-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Accepted: 11/05/2019] [Indexed: 11/19/2022] Open
Affiliation(s)
- Rebecca D Margolis
- Department of Anesthesiology Critical Care Medicine, Children's Hospital Los Angeles, Keck School of Medicine, University of Southern California, 4650 Sunset Boulevard, Los Angeles, CA, 90027, USA
| | - Sean J Gamble
- Present address: Department of Anesthesiology, Phoenix Children's Hospital, 645 E Missouri Ave, Suite 300, Phoenix, AR, 85012, USA
| | - Jimmy J Hoang
- Present address: Department of Anesthesiology, Phoenix Children's Hospital, 645 E Missouri Ave, Suite 300, Phoenix, AR, 85012, USA
| | - Makoto Nagoshi
- Department of Anesthesiology Critical Care Medicine, Children's Hospital Los Angeles, Keck School of Medicine, University of Southern California, 4650 Sunset Boulevard, Los Angeles, CA, 90027, USA.
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69
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Hård af Segerstad M, Olsen F, Houltz E, Nellgård B, Ricksten S. Inhaled prostacyclin for the prevention of increased pulmonary vascular resistance in cemented hip hemiarthroplasty-A randomised trial. Acta Anaesthesiol Scand 2019; 63:1152-1161. [PMID: 31270800 DOI: 10.1111/aas.13423] [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] [Received: 03/25/2019] [Revised: 05/15/2019] [Accepted: 05/30/2019] [Indexed: 11/26/2022]
Abstract
BACKGROUND Bone cementation may cause pulmonary vasoconstriction and ventilation/perfusion abnormalities in patients undergoing cemented hip hemiarthroplasty. In this randomised trial, we tested the hypothesis that intra-operative inhalation of prostacyclin could attenuate the increase in pulmonary vascular resistance index (PVRI, primary endpoint) when compared to inhaled saline in this group of patients. METHODS Twenty-two patients with displaced femoral neck fractures were allocated to receive inhaled aerosolised prostacyclin (20 ng/kg/min) (n = 11) or inhaled saline (NaCl, 9 mg/mL) (n = 11). All patients received total intravenous anaesthesia and were catheterised with radial and pulmonary artery fast response thermodilution catheters, for measurements of arterial and pulmonary arterial pressures, cardiac output, right ventricular ejection fraction and effective pulmonary arterial elastance. Haemodynamic measurements were performed after induction of anaesthesia, during surgery before and immediately after bone cementation and prosthesis insertion, 10 and 20 min after insertion and during skin closure. RESULTS During the surgical procedure, PVRI increased both in the saline (44%, P < 0.001) and the prostacyclin (36%, P = 0.019) groups, with a less pronounced increase in the prostacyclin group (P = 0.031). Effective pulmonary arterial elastance increased both in the saline (44%, P < 0.001) and the prostacyclin groups (29%, P = 0.032), with a trend for a less pronounced increase in the prostacyclin group (P = 0.084). Right ventricular ejection fraction decreased significantly in both groups with no difference between the groups. CONCLUSION Inhalation of prostacyclin attenuates the increase in pulmonary vascular resistance in patients undergoing cemented hip hemiarthroplasty and could potentially attenuate/prevent haemodynamic instability induced by an increase in right ventricular afterload seen in this procedure.
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Affiliation(s)
- Mathias Hård af Segerstad
- Department of Anaesthesiology and Intensive Care Medicine Sahlgrenska Academy, University of Gothenburg, Sahlgrenska University Hospital Gothenburg Sweden
| | - Fredrik Olsen
- Department of Anaesthesiology and Intensive Care Medicine Sahlgrenska Academy, University of Gothenburg, Sahlgrenska University Hospital Gothenburg Sweden
| | - Erik Houltz
- Department of Anaesthesiology and Intensive Care Medicine Sahlgrenska Academy, University of Gothenburg, Sahlgrenska University Hospital Gothenburg Sweden
| | - Bengt Nellgård
- Department of Anaesthesiology and Intensive Care Medicine Sahlgrenska Academy, University of Gothenburg, Sahlgrenska University Hospital Gothenburg Sweden
| | - Sven‐Erik Ricksten
- Department of Anaesthesiology and Intensive Care Medicine Sahlgrenska Academy, University of Gothenburg, Sahlgrenska University Hospital Gothenburg Sweden
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70
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Myatra SN. Hemodynamic effects of alveolar recruitment maneuvres in the operating room: Proceed with caution. J Anaesthesiol Clin Pharmacol 2019; 35:431-433. [PMID: 31920224 PMCID: PMC6939575 DOI: 10.4103/joacp.joacp_223_19] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Affiliation(s)
- Sheila N. Myatra
- Department of Anesthesiology, Critical Care and Pain, Tata Memorial Hospital, Homi Bhabha National Institute, Mumbai, Maharashtra, India
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71
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Park J, Lee EK, Lee JH, Oh EJ, Min JJ. Effects of inspired oxygen concentration during emergence from general anaesthesia on postoperative lung impedance changes evaluated by electrical impedance tomography: a randomised controlled trial. J Clin Monit Comput 2019; 34:995-1004. [PMID: 31564020 DOI: 10.1007/s10877-019-00390-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Accepted: 09/22/2019] [Indexed: 12/17/2022]
Abstract
We evaluated the effects of three different inspired oxygen concentrations (40%, 80%, and 100%) at anaesthesia emergence on postoperative lung volumes as measured by global impedance of electrical impedance tomography (EIT). This is a randomised, controlled, and assessor-blinded study in single-centre from May 2017 to August 2017. Seventy-one patients undergoing elective laparoscopic colorectal surgery with healthy lung condition were randomly allocated into the three groups based on the concentration of inspired oxygen applied during anaesthesia emergence: 40%-, 80%- or 100%-oxygen. End-expiratory lung impedance (EELI) with normal tidal ventilation and total lung impedance (TLI) with full respiratory effort were measured preoperatively and before discharge in the post-anaesthesia care unit by EIT, and perioperative changes (the ratio of difference between preoperative and postoperative value to preoperative value) were compared among the three groups. Postoperative lung impedances were significantly reduced compared with preoperative values in all patients (P < 0.001); however, perioperative lung impedance reduction (%) did not differ among the three oxygen groups. The mean reduction ratio in each 40%-, 80%-, and 100%-oxygen group were 37% ± 13%, 41% ± 14%, and 46% ± 14% for EELI (P = 0.125) and 40% ± 20%, 44% ± 17% and 49% ± 20% for TLI (P = 0.276), respectively. Inspired oxygen concentrations applied during anaesthesia emergence did not show a significant difference in postoperative lung volume as measured by EIT in patients undergoing laparoscopic colorectal surgery with healthy lungs.Trial registration cris.nih.go.kr (KCT0002642).
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Affiliation(s)
- Jiyeon Park
- Department of Anesthesiology and Pain Medicine, Samsung Medical Center, Sungkyukwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Korea.,Department of Anesthesiology and Pain Medicine, School of Medicine, International St. Mary's Hospital, Catholic Kwandong University, Incheon, Republic of Korea
| | - Eun-Kyung Lee
- Department of Anesthesiology and Pain Medicine, Samsung Medical Center, Sungkyukwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Korea
| | - Jong-Hwan Lee
- Department of Anesthesiology and Pain Medicine, Samsung Medical Center, Sungkyukwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Korea
| | - Eun Jung Oh
- Department of Anesthesiology and Pain Medicine, Samsung Medical Center, Sungkyukwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Korea.,Department of Anesthesiology and Pain Medicine, Kangwon National University Hospital, Kangwon University School of Medicine, Chuncheon, Republic of Korea
| | - Jeong Jin Min
- Department of Anesthesiology and Pain Medicine, Samsung Medical Center, Sungkyukwan University School of Medicine, 81 Irwon-ro, Gangnam-gu, Seoul, 06351, Korea.
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Thürk F, Elenkov M, Waldmann AD, Böhme S, Braun C, Adler A, Kaniusas E. Influence of reconstruction settings in electrical impedance tomography on figures of merit and physiological parameters. Physiol Meas 2019; 40:094003. [DOI: 10.1088/1361-6579/ab248e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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73
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Serin SO, Işıklar A, Karaören G, El-Khatib MF, Caldeira V, Esquinas A. Atelectasis in Bariatric Surgery: Review Analysis and Key Practical Recommendations. Turk J Anaesthesiol Reanim 2019; 47:431-438. [PMID: 31828239 DOI: 10.5152/tjar.2019.66564] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2018] [Accepted: 01/14/2019] [Indexed: 11/22/2022] Open
Abstract
Obesity is a condition that affects multiple organ systems, particularly the cardiovascular and respiratory system. In recent years, bariatric surgery has been reported to be the gold standard in the treatment of morbid obesity. Body mass index alone is insufficient to predict risks related to anaesthesia and surgery. Obesity contributes to significant postoperative atelectasis and is considered an independent risk factor for postoperative atelectasis owing to decreased functional residual capacity. The treatment and reversibility of atelectasis developed in obese patients undergoing bariatric surgery are challenging. Therefore, an optimisation of pulmonary functions before surgery, lung-sparing ventilation during the perioperative period, awareness of potential postoperative complications and knowledge about preventive measures and therapeutic approaches have become increasingly important in bariatric surgery. The aim of this review was to aid clinicians in the management of atelectasis in patients undergoing bariatric surgery during the perioperative and postoperative period.
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Affiliation(s)
- Sibel Ocak Serin
- Department of Internal Medicine, Health Sciences University, Ümraniye Training and Research Hospital, İstanbul, Turkey
| | - Aysun Işıklar
- Department of Internal Medicine, Martyr Professor İlhan Varank Sancaktepe Training and Research Hospital, İstanbul, Turkey
| | - Gülşah Karaören
- Department of Anaesthesiology and Reanimation, Health Sciences University, Ümraniye Training and Research Hospital, İstanbul, Turkey
| | - Mohamed Fawzy El-Khatib
- Department of Anaesthesiology, American University of Beirut-Medical Center, Beirut, Lebanon
| | - Vania Caldeira
- Department of Pneumology, Hospital Santa Maria, Lisboa, Portugal
| | - Antonio Esquinas
- Department of Intensive Care Unit, Hospital Morales Meseguer, Murcia, Spain
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74
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Wang ZG, Sun JR, Sha HW. Efficacy of ventilator for patients with atelectasis: A systematic review protocol of randomized controlled trials. Medicine (Baltimore) 2019; 98:e17259. [PMID: 31574839 PMCID: PMC6775436 DOI: 10.1097/md.0000000000017259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND This study aims to assess the efficacy and safety of ventilator for the treatment of atelectasis. METHODS We will search Cochrane Library, MEDLINE, EMBASE, CINAHL, EBSCO, Chinese database Chinese Biomedical Literature Database, China National Knowledge Infrastructure, and Wanfang data from inceptions to June 30, 2019 without language limitations. We will include randomized controlled trials (RCTs) of ventilator on evaluating the efficacy and safety of ventilator for atelectasis. We will use Cochrane risk of bias tool to assess the methodological quality for all included RCTs. RevMan 5.3 software will be used for statistical analysis. RESULTS The primary outcome is lung function. The secondary outcomes comprise of airway pressure, mean arterial pressure, arterial blood gas, heart rate, respiratory rate, oxygen saturation, and adverse events. CONCLUSION The findings of this study will provide most recent evidence of ventilator for the treatment of atelectasis. SYSTEMATIC REVIEW REGISTRATION PROSPERO CRD42019139329.
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Affiliation(s)
- Zhi-Guo Wang
- Department of Elderly Respiratory Medicine, Cardiovascular and Cerebrovascular Specialist Ward Affiliated to Yanan University
| | - Jian-Rong Sun
- Department of Elderly Respiratory Medicine, Dongguan Hospital of Yanan University Affiliated Hospital
| | - Hai-Wang Sha
- Surgical Intensive Care Center, Yanan University Affiliated Hospital, Yan’an, China
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75
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Araos JD, Lacitignola L, Stripoli T, Grasso S, Crovace A, Staffieri F. Effects of positive end-expiratory pressure alone or an open-lung approach on recruited lung volumes and respiratory mechanics of mechanically ventilated horses. Vet Anaesth Analg 2019; 46:780-788. [PMID: 31477474 DOI: 10.1016/j.vaa.2019.04.016] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Revised: 03/29/2019] [Accepted: 04/24/2019] [Indexed: 10/26/2022]
Abstract
OBJECTIVE To evaluate the effects of positive end-expiratory pressure (PEEP) alone and PEEP preceded by lung recruitment manoeuvre (LRM) on lung volumes and respiratory system mechanics in healthy horses undergoing general anaesthesia. STUDY DESIGN Controlled, prospective clinical study. ANIMALS A group of 15 horses undergoing arthroscopy. METHODS Following anaesthetic induction, initial ventilatory settings were: tidal volume 15 mL kg-1, inspiratory:expiratory ratio 1:2, respiratory rate to maintain end-tidal CO2 between 5.3-6.6 kPa (40-50 mmHg). The following settings were implemented sequentially: zero PEEP (ZEEP); PEEP 10 cmH2O (PEEP); LRM (50 cmH2O for 20 seconds) followed by 10 cmH2O of PEEP (LRM + PEEP). Static compliance (Cst), driving pressure, delta end-expiratory (ΔEELV) and recruited lung volumes (RLV) were obtained 30 minutes after initiating each ventilatory strategy. Data were analyzed with paired t test or analysis of variance followed by Tukey's post hoc test. Data are shown as mean ± standard deviation; p < 0.05 was considered significant. RESULTS PEEP induced ΔEELV of 6.68 ± 3.36 mL kg-1; ΔEELV during LRM + PEEP was 14.28 ± 5.59 mL kg-1 (p < 0.0001). The RLV was greater during the LRM + PEEP phase (12.30 ± 5.85 mL kg-1) than during PEEP (4.47 ± 3.97 mL kg-1; p < 0.0001). The Cst was unchanged from ZEEP to PEEP (0.75 ± 0.21 and 0.85 ± 0.22 mL cmH2O-1 kg-1, respectively, p = 0.36) but increased using LRM + PEEP (1.11 ± 0.25 mL cmH2O-1 kg-1, p = 0.0004). Driving pressure was lower during LRM + PEEP than during PEEP and ZEEP (16 ± 2, 19 ± 2 and 21 ± 4 cmH2O, respectively, p < 0.0001). CONCLUSIONS AND CLINICAL RELEVANCE Unlike PEEP alone, PEEP preceded by LRM increased RLV and Cst and reduced driving pressure in horses under anaesthesia.
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Affiliation(s)
- Joaquin D Araos
- Centre Hospitalier Universitaire Veterinaire, Faculte de Medecine Veterinaire, Universite de Montreal, Québec, Canada
| | - Luca Lacitignola
- Surgery Unit, Section of Veterinary Clinics and Animal Production, Department of Emergency and Organ Transplantation D.E.O.T., "Aldo Moro" University of Bari, Bari, Italy
| | - Tania Stripoli
- Section of Anesthesia and Intensive Care, Department of Emergency and Organ Transplantation (D.E.O.T.), "Aldo Moro" University of Bari, Bari, Italy
| | - Salvatore Grasso
- Section of Anesthesia and Intensive Care, Department of Emergency and Organ Transplantation (D.E.O.T.), "Aldo Moro" University of Bari, Bari, Italy
| | - Antonio Crovace
- Surgery Unit, Section of Veterinary Clinics and Animal Production, Department of Emergency and Organ Transplantation D.E.O.T., "Aldo Moro" University of Bari, Bari, Italy
| | - Francesco Staffieri
- Surgery Unit, Section of Veterinary Clinics and Animal Production, Department of Emergency and Organ Transplantation D.E.O.T., "Aldo Moro" University of Bari, Bari, Italy.
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Noll E, Ohana M, Hengen M, Bennett-Guerrero E, Diana M, Giraudeau C, Pottecher J, Meyer N, Diemunsch P. Validation of MRI for Volumetric Quantification of Atelectasis in the Perioperative Period: An Experimental Study in Swine. Front Physiol 2019; 10:695. [PMID: 31214052 PMCID: PMC6558191 DOI: 10.3389/fphys.2019.00695] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 05/16/2019] [Indexed: 11/13/2022] Open
Abstract
Background: Impairment of pulmonary aeration is a frequent postoperative complication that is associated with adverse outcome. Diagnosis and quantification of impaired pulmonary aeration by CT scan is limited due to concern for exposure to ionizing radiation. Magnetic resonance imaging (MRI) represents a potential radiation-free alternative for this use. We undertook an experimental study to validate the use of MRI to quantify pulmonary aeration impairment. Methods: Ten large white pigs were studied before intubation, after intubation, 2 h after non-protective mechanical ventilation and after intra-tracheal negative pressure suction to induce atelectasis. A lung CT scan immediately followed by a lung MRI were performed at all four time points. On the 40 CT images lung volumes corresponding to non-aerated, poorly aerated, normally aerated, and overinflated voxels were measured based on their radiodensity. Similarly, on the 40 MRI images lung volumes corresponding to non-aerated and aerated voxels were measured based on their signal intensity. The correlation between non-aerated lung by MRI vs., CT scans, and with PaO2/FiO2 measured at each of the four time points was assessed with the Pearson’ correlation coefficient, bias and limits of agreement. Results: Pearson correlation coefficient, bias and limits of agreements between the CT non-aerated lung volumes and MRI abnormal lung volumes were 0.88, -16 ml, and (-108, 77), respectively. Pearson correlation coefficient between PaO2/FiO2 and abnormal lung volumes measured with MRI was -0.60. Conclusion: In a preclinical swine model, quantitative measurements of pulmonary atelectasis by MRI-imaging are well correlated with the gold standard, i.e., densitometric scan CT measurements.
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Affiliation(s)
- Eric Noll
- Institut Hospitalo-Universitaire "Image-Guided Surgery", Université de Strasbourg, Strasbourg, France.,Department of Anesthesia and Intensive Care, Strasbourg University Hospital, Strasbourg, France.,Fédération de Médecine Translationnelle de Strasbourg (FMTS), Faculté de Médecine, Institut de Physiologie, Université de Strasbourg, Strasbourg, France
| | - Mickael Ohana
- Department of Radiology, Strasbourg University Hospital, Strasbourg, France
| | - Maryse Hengen
- Institut Hospitalo-Universitaire "Image-Guided Surgery", Université de Strasbourg, Strasbourg, France.,Department of Anesthesia and Intensive Care, Strasbourg University Hospital, Strasbourg, France
| | | | - Michele Diana
- Institut Hospitalo-Universitaire "Image-Guided Surgery", Université de Strasbourg, Strasbourg, France
| | - Celine Giraudeau
- Institut Hospitalo-Universitaire "Image-Guided Surgery", Université de Strasbourg, Strasbourg, France
| | - Julien Pottecher
- Institut Hospitalo-Universitaire "Image-Guided Surgery", Université de Strasbourg, Strasbourg, France.,Department of Anesthesia and Intensive Care, Strasbourg University Hospital, Strasbourg, France.,Fédération de Médecine Translationnelle de Strasbourg (FMTS), Faculté de Médecine, Institut de Physiologie, Université de Strasbourg, Strasbourg, France
| | - Nicolas Meyer
- Department of Public Health, Groupe Methodes en Recherche Clinique (GMRC), Strasbourg University Hospital, Strasbourg, France.,iCube, UMR7357, University of Strasbourg, Strasbourg, France
| | - Pierre Diemunsch
- Institut Hospitalo-Universitaire "Image-Guided Surgery", Université de Strasbourg, Strasbourg, France.,Department of Anesthesia and Intensive Care, Strasbourg University Hospital, Strasbourg, France.,Fédération de Médecine Translationnelle de Strasbourg (FMTS), Faculté de Médecine, Institut de Physiologie, Université de Strasbourg, Strasbourg, France
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77
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Horr M, Nunes N, Biteli E, Lopes P, Gering A, Moro J, Rocha F. Effects of inspired oxygen fractions in rabbits anesthetized with isoflurane or sevoflurane, maintained on spontaneous ventilation. ARQ BRAS MED VET ZOO 2019. [DOI: 10.1590/1678-4162-10472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
ABSTRACT It is important to identify the best inspired fraction of oxygen in a variety of situations, including sevoflurane or isoflurane anesthesia, in spontaneously breathing rabbits. For this, 64 rabbits were assigned to eight groups: GI100 (FiO2= 1,0 + isoflurane), GS100 (FiO2= 1,0 + sevoflurane), GI80 (FiO2= 0,8 + isoflurane), GS80 (FiO2= 0,8 + sevoflurane), GI60 (FiO2= 0,6 + isoflurane), GS60 (FiO2= 0,6 + sevoflurane), GI21 (FiO2= 0,21 + isoflurane), GS21 (FiO2= 0,21 + sevoflurane). The induction was performed with (2.5MAC) of the anesthetic. The vaporizer was setted at 1.5 MAC and FiO2 as attributed for each group. After the induction, the concentration was changed to 1 MAC. Measurements of parameters were performed 30 minutes after induction (T0), and then at 15 minute intervals (from T15 to T60). The arterial partial pressures of oxygen (PaO2), alveolar oxygen partial pressure (PAO2) and alveolar-arterial oxygen gradient [P(A-a)O2] were higher with the use of high FiO2. The GI80 showed higher levels of PaO2 FiO2 ratio and respiratory index (RI). In conclusion, the FiO2 of 0.21 is not indicated, because it causes hypoxemia. The isoflurane determines better ventilation when compared to sevoflurane, but isoflurane associated with 80% of oxygen promotes intrapulmonary shunt increase.
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Affiliation(s)
- M. Horr
- Universidade Estadual Paulista, Brazil
| | - N. Nunes
- Universidade Estadual Paulista, Brazil
| | | | | | | | - J.V. Moro
- Universidade Estadual Paulista, Brazil
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78
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Toner AJ, Douglas SG, Bailey MA, Avis HJ, Pillai AV, Phillips M, Heard A. Effect of Apneic Oxygenation on Tracheal Oxygen Levels, Tracheal Pressure, and Carbon Dioxide Accumulation: A Randomized, Controlled Trial of Buccal Oxygen Administration. Anesth Analg 2019; 128:1154-1159. [PMID: 31094782 DOI: 10.1213/ane.0000000000003810] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Apneic oxygenation via the oral route using a buccal device extends the safe apnea time in most but not all obese patients. Apneic oxygenation techniques are most effective when tracheal oxygen concentrations are maintained >90%. It remains unclear whether buccal oxygen administration consistently achieves this goal and whether significant risks of hypercarbia or barotrauma exist. METHODS We conducted a randomized trial of buccal or sham oxygenation in healthy, nonobese patients (n = 20), using prolonged laryngoscopy to maintain apnea with a patent airway until arterial oxygen saturation (SpO2) dropped <95% or 750 seconds elapsed. Tracheal oxygen concentration, tracheal pressure, and transcutaneous carbon dioxide (CO2) were measured throughout. The primary outcome was maintenance of a tracheal oxygen concentration >90% during apnea. RESULTS Buccal patients were more likely to achieve the primary outcome (P < .0001), had higher tracheal oxygen concentrations throughout apnea (mean difference, 65.9%; 95% confidence interval [CI], 62.6%-69.3%; P < .0001), and had a prolonged median (interquartile range) apnea time with SpO2 >94%; 750 seconds (750-750 seconds) vs 447 seconds (405-525 seconds); P < .001. One patient desaturated to SpO2 <95% despite 100% tracheal oxygen. Mean tracheal pressures were low in the buccal (0.21 cm·H2O; SD = 0.39) and sham (0.56 cm·H2O; SD = 1.25) arms; mean difference, -0.35 cm·H2O; 95% CI, 1.22-0.53; P = .41. CO2 accumulation during early apnea before any study end points were reached was linear and marginally faster in the buccal arm (3.16 vs 2.82 mm Hg/min; mean difference, 0.34; 95% CI, 0.30-0.38; P < .001). Prolonged apnea in the buccal arm revealed nonlinear CO2 accumulation that declined over time and averaged 2.22 mm Hg/min (95% CI, 2.21-2.23). CONCLUSIONS Buccal oxygen administration reliably maintains high tracheal oxygen concentrations, but early arterial desaturation can still occur through mechanisms other than device failure. Whereas the risk of hypercarbia is similar to that observed with other approaches, the risk of barotrauma is negligible. Continuous measurement of advanced physiological parameters is feasible in an apneic oxygenation trial and can assist with device evaluation.
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Affiliation(s)
- Andrew J Toner
- From the Department of Anaesthesia and Pain Medicine, Royal Perth Hospital, Perth, Australia
| | - Scott G Douglas
- From the Department of Anaesthesia and Pain Medicine, Royal Perth Hospital, Perth, Australia
| | - Martin A Bailey
- From the Department of Anaesthesia and Pain Medicine, Royal Perth Hospital, Perth, Australia
- Department of Anaesthesia and Pain Medicine, Fiona Stanley Hospital, Perth, Australia
| | - Hans J Avis
- From the Department of Anaesthesia and Pain Medicine, Royal Perth Hospital, Perth, Australia
| | - Arani V Pillai
- From the Department of Anaesthesia and Pain Medicine, Royal Perth Hospital, Perth, Australia
- Department of Anaesthesia, Nottingham University Hospitals NHS Trust, Nottingham, United Kingdom
| | - Michael Phillips
- From the Department of Anaesthesia and Pain Medicine, Royal Perth Hospital, Perth, Australia
- Centre for Medical Research, University of Western Australia, Perth, Australia
| | - Andrew Heard
- From the Department of Anaesthesia and Pain Medicine, Royal Perth Hospital, Perth, Australia
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79
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Modified Lung Ultrasound Examinations in Assessment and Monitoring of Positive End-Expiratory Pressure-Induced Lung Reaeration in Young Children With Congenital Heart Disease Under General Anesthesia. Pediatr Crit Care Med 2019; 20:442-449. [PMID: 31058784 DOI: 10.1097/pcc.0000000000001865] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVES Lung ultrasound can reliably diagnose pulmonary atelectasis. The object of this study is to determine the most efficient region to assess changes in atelectasis in children with congenital heart disease under general anesthesia. DESIGN Randomized controlled trial. SETTING Operating room at university-affiliated children's hospital. PATIENTS Children between 3 months and 3 years old, scheduled for elective congenital heart disease surgery under general anesthesia. INTERVENTIONS Forty children with congenital heart disease were randomly allocated to either a 5 cm H2O positive end-expiratory pressure group or a standard therapy control group. MEASUREMENTS AND MAIN RESULTS Preoperative lung ultrasound was performed twice in each patient-after 1 and 15 minutes of mechanical ventilation. Atelectatic areas and B-lines were compared between two examinations. Different ultrasound regions were evaluated using Bland-Altman plots. The occurrence rate of atelectasis was much higher in inferoposterior lung regions (Scans 4-6) than in anterior and lateral regions (Scans 1-3). The median (interquartile range) lung ultrasound scores were lower in the positive end-expiratory pressure group than in the control group after treatment: 8 (3.3-9.8) versus 13 (8.3-17.5; p < 0.001). The atelectatic area was significantly decreased after treatment in the positive end-expiratory pressure group: 128 mm (34.5.5-213.3 mm) versus 49.5 mm (5.3-75.5 mm; p < 0.001). Bland-Altman plots revealed concordance between measurements in Scans 1-6 and those in Scans 4-6. In the posterior axillary line regions, changes in atelectatic area were significantly larger in the positive end-expiratory pressure group than in the control group (p = 0.03, 0.007, and 0.018). CONCLUSIONS Lung ultrasound in inferoposterior lung regions may be more likely to reflect changes in atelectasis and save examination time; 5 cm H2O positive end-expiratory pressure may be useful in lung reaeration and can reduce, but not eliminate, atelectasis in children with congenital heart disease.
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80
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Koh JC, Hong JH, Kweon TD, Park JY, Ko E, Kim JY. Relationship between PaO2/FiO2 and number of regions with B-line on transthoracic lung ultrasound: a prospective, observational study. Anesth Pain Med (Seoul) 2019. [DOI: 10.17085/apm.2019.14.2.187] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Affiliation(s)
- Jae Chul Koh
- Department of Anesthesiology and Pain Medicine, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Korea
| | - Jung Hwa Hong
- Department of Policy Research Affairs, National Health Insurance Service Ilsan Hospital, Goyang, Korea
| | - Tae Dong Kweon
- Department of Anesthesiology and Pain Medicine and Anesthesia and Pain Research Institute, Yonsei University College of Medicine, Seoul, Korea
| | - Ju Yeon Park
- Department of Anesthesia and Pain Medicine, Pusan National University School of Medicine, Yangsan, Korea
| | - Eunji Ko
- Department of Anesthesiology and Pain Medicine, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Korea
| | - Ji Young Kim
- Department of Anesthesiology and Pain Medicine and Anesthesia and Pain Research Institute, Yonsei University College of Medicine, Seoul, Korea
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81
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Abstract
Postoperative pulmonary complications are a major determinant of outcome for patients and consume huge resources within hospital, particularly in critical care. Prediction and anticipation of postoperative pulmonary complications are vital for patient selection and, in some cases, for informed patient consent. Being able to assess the likelihood of postoperative pulmonary complications also allows research into methods to reduce them by allowing allocation of patients to the appropriate arms of research trials. Some patients have pre-operative characteristics or belong to patient groups such as those with chronic obstructive pulmonary disease or obstructive sleep apnoea, where techniques and evidence-based guidance to avoid or reduce complications are becoming established. Intra-operative ventilation and the use of lung-protective ventilation may be helpful during major surgery, but studies looking at reduced tidal volumes, recruitment and levels of positive end-expiratory pressure, have this far only led to a degree of consensus in terms of tidal volume, although parameters that predispose to postoperative pulmonary complications are becoming clearer. Optimal postoperative care in terms of analgesia, positioning, physiotherapy and mobilisation is another developing area. Techniques such as continuous positive airways pressure, non-invasive ventilation and high-flow nasal humidified oxygen appear to show some benefit, but the exact roles, pressures and timings of each are currently being explored. Much remains to be researched and developed into evidence-based practice.
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Affiliation(s)
- G H Mills
- Department of Anaesthesia and Intensive Care Medicine, Sheffield Teaching Hospital NHS Foundation Trust, Sheffield, UK.,University of Sheffield, Sheffield, UK
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82
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Hooda B, Chouhan RS, Rath GP, Lamsal R, Bithal PK. Incidence and predictors of postoperative pulmonary complications in patients undergoing craniotomy and excision of posterior fossa tumor. J Anaesthesiol Clin Pharmacol 2019; 35:254-260. [PMID: 31303718 PMCID: PMC6598580 DOI: 10.4103/joacp.joacp_350_17] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Background and Aims: Infratentorial neurosurgical procedures are considered high risk for the development of postoperative pulmonary complications (POPCs), prolonging hospital stay of patients with substantial morbidity and mortality. Material and Methods: Patients between the ages of 18 and 65 years, who underwent elective surgery for posterior fossa tumors over a period of two years, were reviewed. Data including American Society of Anesthesiologists physical status; comorbidities like hypertension, diabetes mellitus and hypothyroidism, history of smoking, obstructive sleep apnea, respiratory symptoms, lower cranial nerve (LCN) palsy; intraoperative complications such as hemodynamic alterations suggestive of brain stem or cranial nerve handling, tight brain as informed by the operating neurosurgeon, blood loss, and transfusion; and postoperative duration of mechanical ventilation, tracheostomy, POPCs, length of ICU and hospital stay, general condition of the patient at discharge, and cause of in-hospital mortality were collected. POPC was defined as the presence of atelectasis, tracheobronchitis, pneumonia, bronchospasm, respiratory failure, reintubation, or weaning failure. Results: Case files of 288 patients fulfilling the study criteria were analyzed; POPCs were observed in 35 patients (12.1%). On multivariate analysis, postoperative blood transfusion, LCN palsy, prolonged ICU stay, and tracheostomy were found to be independent predictors of POPC. Conclusions: The incidence of POPC was 12.1% following infratentorial tumor surgery. The predictors for the occurrence of POPCs were postoperative blood transfusion, LCN palsy, prolonged ICU stay, and tracheostomy.
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Affiliation(s)
- Bhavna Hooda
- Department of Neuroanaesthesiology and Critical Care, All India Institute of Medical Sciences, New Delhi, India
| | - Rajendra Singh Chouhan
- Department of Neuroanaesthesiology and Critical Care, All India Institute of Medical Sciences, New Delhi, India
| | - Girija Prasad Rath
- Department of Neuroanaesthesiology and Critical Care, All India Institute of Medical Sciences, New Delhi, India
| | - Ritesh Lamsal
- Department of Neuroanaesthesiology and Critical Care, All India Institute of Medical Sciences, New Delhi, India
| | - Parmod Kumar Bithal
- Department of Neuroanaesthesiology and Critical Care, All India Institute of Medical Sciences, New Delhi, India
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83
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Korman B, Dash RK, Peyton PJ. Effect of net gas volume changes on alveolar and arterial gas partial pressures in the presence of ventilation-perfusion mismatch. J Appl Physiol (1985) 2018; 126:558-568. [PMID: 30521424 DOI: 10.1152/japplphysiol.00689.2018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The second gas effect (SGE) occurs when nitrous oxide enhances the uptake of volatile anesthetics administered simultaneously. Recent work shows that the SGE is greater in blood than in the gas phase, that this is due to ventilation-perfusion mismatch, that as mismatch increases, the SGE increases in blood but is diminished in the gas phase, and that these effects persist well into the period of nitrous oxide maintenance anesthesia. These modifications of the SGE are most pronounced with the low soluble agents in current use. We investigate further the effect of net gas volume loss during nitrous oxide uptake on low concentrations of other gases present using partial pressure-solubility diagrams. The steady-state equations of gas exchange were solved assuming a log-normal distribution of ventilation-perfusion ratios using Lebesgue-Stieltjes integration. It was shown that under these conditions the classical partial pressure-solubility diagram must be modified, that for currently used volatile anesthetic agents the alveolar-arterial partial pressure difference is less than that predicted in the past, and that the alveolar-arterial partial pressure difference may even be reversed during uptake in the case of highly insoluble gases such as sulfur hexafluoride. Comparing this with the situation described previously for nitrogen in steady-state air breathing, we show that for nitrogen, the direction of the alveolar-arterial gradient is opposite to the direction of net gas volume movement. Although gas uptake with ventilation-perfusion inequality exceeding that when matching is optimal is shown to be possible, it is less likely than alveolar-arterial partial pressure reversal. NEW & NOTEWORTHY Net uptake of gases administered with nitrous oxide may proceed against an alveolar-arterial partial pressure gradient. The alveolar-arterial gradient for nitrogen in the steady-state breathing air depends not only on the existence of a distribution of ventilation-perfusion ratios in the lung but also on the presence of a net change in gas volume and is opposite in direction to the direction of net gas volume uptake.
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Affiliation(s)
- Ben Korman
- Department of Anaesthesia and Pain Medicine, Royal Perth Hospital , Perth, Western Australia , Australia
| | - Ranjan K Dash
- Departments of Biomedical Engineering and Physiology, Medical College of Wisconsin, Milwaukee, Wisconsin
| | - Philip J Peyton
- Anaesthesia, Perioperative, and Pain Medicine Unit, Melbourne Medical School, University of Melbourne, Department of Anaesthesia, Austin Health, Heidelberg, Victoria , Australia
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84
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Marini JJ. Acute Lobar Atelectasis. Chest 2018; 155:1049-1058. [PMID: 30528423 DOI: 10.1016/j.chest.2018.11.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Revised: 11/15/2018] [Accepted: 11/17/2018] [Indexed: 01/06/2023] Open
Abstract
Lobar atelectasis (or collapse) is an exceedingly common, rather predictable, and potentially pathogenic companion to many forms of acute illness, postoperative care, and chronic debility. Readily diagnosed by using routine chest imaging and bedside ultrasound, the consequences from lobar collapse may be minor or serious, depending on extent, mechanism, patient vulnerability, abruptness of onset, effectiveness of hypoxic vasoconstriction, and compensatory reserves. Measures taken to reduce secretion burden, assure adequate secretion clearance, maintain upright positioning, reverse lung compression, and sustain lung expansion accord with a logical physiologic rationale. Both classification and logical approaches to prophylaxis and treatment of lobar atelectasis derive from a sound mechanistic knowledge of its causation.
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Affiliation(s)
- John J Marini
- Pulmonary & Critical Care Medicine Divisions, Regions Hospital & University of Minnesota, Minneapolis/St. Paul, MN.
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85
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Kim K, Jang DM, Park JY, Yoo H, Kim HS, Choi WJ. Changes of diaphragmatic excursion and lung compliance during major laparoscopic pelvic surgery: A prospective observational study. PLoS One 2018; 13:e0207841. [PMID: 30496318 PMCID: PMC6264802 DOI: 10.1371/journal.pone.0207841] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Accepted: 11/07/2018] [Indexed: 11/18/2022] Open
Abstract
Major laparoscopic pelvic surgery requires steep Trendelenburg position with pneumoperitoneum for a long time. We investigated the effect of Trendelenburg position with pneumoperitoneum on diaphragmatic excursion and lung compliance during major laparoscopic pelvic surgery using M-mode sonography. Twenty patients undergoing elective pelviscopic radical hysterectomy were included in this study. Diaphragmatic excursion was measured at the following time points; after sedation, after intubation, 90 minutes after Trendelenburg position with pneumoperitoneum, and after operation with recovery of muscle relaxation. And lung compliance was measured using anesthetic machine under general anesthesia; after the intubation, 90 minutes after Trendelenburg position with pneumoperitoneum and after operation with recovery of muscle relaxation. In order to detect postoperative pulmonary complication, postoperative chest radiography was checked. Static lung compliance, dynamic lung compliance and diaphragmatic excursion were decreased during operation (P < 0.001, respectively). At the end of the operation with recovery of muscle relaxation, reduced diaphragmatic movement was not recovered as its excursion after sedation (P < 0.001). In conclusion, lung compliance was decreased following transiently decreased diaphragmatic excursion during major laparoscopic pelvic surgery.
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Affiliation(s)
- Kyungmi Kim
- Department of Anesthesiology and Pain Medicine, Gil Medical Center, Gachon University College of Medicine, Incheon, Republic of Korea
| | - Dong-Min Jang
- Department of Anesthesiology and Pain Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Jong-Yeon Park
- Department of Anesthesiology and Pain Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Hwanhee Yoo
- Department of Anesthesiology and Pain Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Hong Soon Kim
- Department of Anesthesiology and Pain Medicine, Gil Medical Center, Gachon University College of Medicine, Incheon, Republic of Korea
| | - Woo-Jong Choi
- Department of Anesthesiology and Pain Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
- * E-mail:
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86
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Wang Y, Liu X, Jia Y, Xie J. Impact of breathing exercises in subjects with lung cancer undergoing surgical resection: A systematic review and meta‐analysis. J Clin Nurs 2018; 28:717-732. [DOI: 10.1111/jocn.14696] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2018] [Revised: 09/21/2018] [Accepted: 10/17/2018] [Indexed: 12/15/2022]
Affiliation(s)
- Ya‐Qing Wang
- School of NursingJilin University Changchun China
| | - Xin Liu
- School of NursingJilin University Changchun China
| | - Yong Jia
- School of NursingJilin University Changchun China
| | - Jiao Xie
- School of NursingJilin University Changchun China
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87
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Cortegiani A, Accurso G, Mercadante S, Giarratano A, Gregoretti C. High flow nasal therapy in perioperative medicine: from operating room to general ward. BMC Anesthesiol 2018; 18:166. [PMID: 30414608 PMCID: PMC6230300 DOI: 10.1186/s12871-018-0623-4] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Accepted: 10/19/2018] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND High flow nasal therapy (HFNT) is a technique in which humidified and heated gas is delivered to the airways through the nose via small nasal prongs at flows that are higher than the rates generally applied during conventional oxygen therapy. The delivered high flow rates combine mixtures of air and oxygen and enable different inspired oxygen fractions ranging from 0.21 to 1. HFNT is increasingly used in critically ill adult patients, especially hypoxemic patients in different clinical settings. MAIN BODY Noninvasive ventilation delivers positive pressure (end-expiratory and inspiratory pressures or continuous positive airway pressure) via different external interfaces. In contrast, HFNT produces different physiological effects that are only partially linked to the generation of expiratory positive airway pressure. HFNT and noninvasive ventilation (NIV) are interesting non-invasive supports in perioperative medicine. HFNT exhibits some advantages compared to NIV because HFNT is easier to apply and requires a lower nursing workload. Tolerance of HFNT remains a matter of intense debate, and it may be related to selected parameters. Patients receiving HFNT and their respiratory patterns should be closely monitored to avoid delays in intubation despite correct oxygenation parameters. CONCLUSION HFNT seems to be an interesting noninvasive support in perioperative medicine. The present review provides anesthesiologists with an overview of current evidence and practical advice on the application of HFNT in perioperative medicine in adult patients.
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Affiliation(s)
- Andrea Cortegiani
- Department of Surgical, Oncological and Oral Science (Di.Chir.On.S.). Section of Anesthesia, Analgesia, Intensive Care and Emergency. Policlinico Paolo Giaccone, University of Palermo, Via del vespro 129, 90127, Palermo, Italy
| | - Giuseppe Accurso
- Department of Surgical, Oncological and Oral Science (Di.Chir.On.S.). Section of Anesthesia, Analgesia, Intensive Care and Emergency. Policlinico Paolo Giaccone, University of Palermo, Via del vespro 129, 90127, Palermo, Italy
| | - Sebastiano Mercadante
- Anesthesia and Intensive Care and Pain Relief and Palliative Care Unit, La Maddalena Cancer Center, Palermo, Italy
| | - Antonino Giarratano
- Department of Surgical, Oncological and Oral Science (Di.Chir.On.S.). Section of Anesthesia, Analgesia, Intensive Care and Emergency. Policlinico Paolo Giaccone, University of Palermo, Via del vespro 129, 90127, Palermo, Italy
| | - Cesare Gregoretti
- Department of Surgical, Oncological and Oral Science (Di.Chir.On.S.). Section of Anesthesia, Analgesia, Intensive Care and Emergency. Policlinico Paolo Giaccone, University of Palermo, Via del vespro 129, 90127, Palermo, Italy.
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88
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Perelló-Díez M, Paz-Lourido B. Prevention of postoperative pulmonary complications through preoperative physiotherapy interventions in patients undergoing coronary artery bypass graft: literature review. J Phys Ther Sci 2018; 30:1034-1038. [PMID: 30154596 PMCID: PMC6110234 DOI: 10.1589/jpts.30.1034] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2018] [Accepted: 05/07/2018] [Indexed: 12/20/2022] Open
Abstract
[Purpose] The purpose of this review is to identify which preoperative physiotherapy interventions are applied in patients undergoing Coronary Artery Bypass Graft. [Participants and Methods] A literature review was carried out using the databases EBSCOhost, Pubmed, LILACS, IBECS, Cochrane and PEDro. Taking into consideration the inclusion and exclusion criteria, 14 studies published in 2006-2017 about preoperative physiotherapy to Coronary Artery Bypass Graft in adults were selected. [Results] Preoperative physiotherapy included interventions such as inspiratory muscle training, aerobic exercise, education in breathing exercises and counselling. Most of the studies described a combination of these interventions illustrating benefits for patients as decreasing the risk of developing postoperative pulmonary complications, reducing the length of hospitalization as well as time to extubation, anxiety and depression. [Conclusion] Preoperative Physiotherapy in patients undergoing Coronary Artery Bypass Graft includes different interventions, and their effects have been evaluated mainly through a combination of them. These combined interventions, particularly those with an inspiratory muscle training component reduce postoperative pulmonary complications. More studies are needed to identify their impact for patients.
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Affiliation(s)
- Marina Perelló-Díez
- Department of Nursing and Physiotherapy, University of the
Balearic Islands: Edifici Beatriu de Pinós, Carretera de Valldemossa Km. 7.5, 07122 Palma,
Balearic Islands, Spain
| | - Berta Paz-Lourido
- Department of Nursing and Physiotherapy, University of the
Balearic Islands: Edifici Beatriu de Pinós, Carretera de Valldemossa Km. 7.5, 07122 Palma,
Balearic Islands, Spain
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89
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Foo TS, Pilton JL, Hall EJ, Martinez-Taboada F, Makara M. Effect of body position and time on quantitative computed tomographic measurements of lung volume and attenuation in healthy anesthetized cats. Am J Vet Res 2018; 79:874-883. [PMID: 30058848 DOI: 10.2460/ajvr.79.8.874] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To quantify the effect of time and recumbency on CT measurements of lung volume and attenuation in healthy cats under general anesthesia. ANIMALS 8 healthy research cats. PROCEDURES Anesthetized cats were positioned in sternal recumbency for 20 minutes and then in left, right, and left lateral recumbency (40 minutes/position). Expiratory helical CT scan of the thorax was performed at 0 and 20 minutes in sternal recumbency and at 0, 5, 10, 20, 30, and 40 minutes in each lateral recumbent position. For each lung, CT measurements of lung volume and attenuation and the extent of lung areas that were hyperaerated (-1,000 to -901 Hounsfield units [HU]), normoaerated (-900 to -501 HU), poorly aerated (-500 to -101 HU), or nonaerated (-100 to +100 HU [indicative of atelectasis]) were determined with a semiautomatic threshold-based technique. A restricted maximum likelihood analysis was performed. RESULTS In lateral recumbency, the dependent lung had significantly greater attenuation and a lower volume than the nondependent lung. Within the dependent lung, there was a significantly higher percentage of poorly aerated lung tissue, compared with that in the nondependent lung. These changes were detected immediately after positioning the cats in lateral recumbency and remained static with no further significant time-related change. CONCLUSIONS AND CLINICAL RELEVANCE Results indicated that once anesthetized healthy cats were positioned in lateral recumbency, the dependent lung lobes underwent a rapid reduction in lung volume and increase in lung attenuation that did not progress over time, predominantly attributable to an increase in poorly aerated lung tissue.
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90
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The effect of CPAP during preoxygenation and PEEP during induction upon the duration of non-hypoxic apnea and hemodynamic parameters. JOURNAL OF SURGERY AND MEDICINE 2018. [DOI: 10.28982/josam.436032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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91
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Grieco D, Anzellotti G, Dell’Anna A, Russo A, Bongiovanni F, Antonelli M. PEEP-induced changes in lung volume to estimate transpulmonary pressure: the role of alveolar recruitment. Br J Anaesth 2018; 121:101-103. [DOI: 10.1016/j.bja.2018.03.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2018] [Revised: 03/29/2018] [Accepted: 04/01/2018] [Indexed: 10/17/2022] Open
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92
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Grieco DL, Russo A, Romanò B, Anzellotti GM, Ciocchetti P, Torrini F, Barelli R, Eleuteri D, Perilli V, Dell'Anna AM, Bongiovanni F, Sollazzi L, Antonelli M. Lung volumes, respiratory mechanics and dynamic strain during general anaesthesia. Br J Anaesth 2018; 121:1156-1165. [PMID: 30336861 DOI: 10.1016/j.bja.2018.03.022] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2018] [Revised: 03/11/2018] [Accepted: 03/28/2018] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Driving pressure (ΔP) represents tidal volume normalised to respiratory system compliance (CRS) and is a novel parameter to target ventilator settings. We conducted a study to determine whether CRS and ΔP reflect aerated lung volume and dynamic strain during general anaesthesia. METHODS Twenty non-obese patients undergoing open abdominal surgery received three PEEP levels (2, 7, or 12 cm H2O) in random order with constant tidal volume ventilation. Respiratory mechanics, lung volumes, and alveolar recruitment were measured to assess end-expiratory aerated volume, which was compared with the patient's individual predicted functional residual capacity in supine position (FRCp). RESULTS CRS was linearly related to aerated volume and ΔP to dynamic strain at PEEP of 2 cm H2O (intraoperative FRC) (r=0.72 and r=0.73, both P<0.001). These relationships were maintained with higher PEEP only when aerated volume did not overcome FRCp (r=0.73, P<0.001; r=0.54, P=0.004), with 100 ml lung volume increases accompanied by 1.8 ml cm H2O-1 (95% confidence interval [1.1-2.5]) increases in CRS. When aerated volume was greater or equal to FRCp (35% of patients at PEEP 2 cm H2O, 55% at PEEP 7 cm H2O, and 75% at PEEP 12 cm H2O), CRS and ΔP were independent from aerated volume and dynamic strain, with CRS weakly but significantly inversely related to alveolar dead space fraction (r=-0.47, P=0.001). PEEP-induced alveolar recruitment yielded higher CRS and reduced ΔP only at aerated volumes below FRCp (P=0.015 and 0.008, respectively). CONCLUSIONS During general anaesthesia, respiratory system compliance and driving pressure reflect aerated lung volume and dynamic strain, respectively, only if aerated volume does not exceed functional residual capacity in supine position, which is a frequent event when PEEP is used in this setting.
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Affiliation(s)
- D L Grieco
- Department of Anesthesiology and Intensive Care Medicine, Catholic University of the Sacred Heart, Fondazione "Policlinico Universitario A. Gemelli", Rome, Italy.
| | - A Russo
- Department of Anesthesiology and Intensive Care Medicine, Catholic University of the Sacred Heart, Fondazione "Policlinico Universitario A. Gemelli", Rome, Italy
| | - B Romanò
- Department of Anesthesiology and Intensive Care Medicine, Catholic University of the Sacred Heart, Fondazione "Policlinico Universitario A. Gemelli", Rome, Italy
| | - G M Anzellotti
- Department of Anesthesiology and Intensive Care Medicine, Catholic University of the Sacred Heart, Fondazione "Policlinico Universitario A. Gemelli", Rome, Italy
| | - P Ciocchetti
- Department of Anesthesiology and Intensive Care Medicine, Catholic University of the Sacred Heart, Fondazione "Policlinico Universitario A. Gemelli", Rome, Italy
| | - F Torrini
- Department of Anesthesiology and Intensive Care Medicine, Catholic University of the Sacred Heart, Fondazione "Policlinico Universitario A. Gemelli", Rome, Italy
| | - R Barelli
- Department of Anesthesiology and Intensive Care Medicine, Catholic University of the Sacred Heart, Fondazione "Policlinico Universitario A. Gemelli", Rome, Italy
| | - D Eleuteri
- Department of Anesthesiology and Intensive Care Medicine, Catholic University of the Sacred Heart, Fondazione "Policlinico Universitario A. Gemelli", Rome, Italy
| | - V Perilli
- Department of Anesthesiology and Intensive Care Medicine, Catholic University of the Sacred Heart, Fondazione "Policlinico Universitario A. Gemelli", Rome, Italy
| | - A M Dell'Anna
- Department of Anesthesiology and Intensive Care Medicine, Catholic University of the Sacred Heart, Fondazione "Policlinico Universitario A. Gemelli", Rome, Italy
| | - F Bongiovanni
- Department of Anesthesiology and Intensive Care Medicine, Catholic University of the Sacred Heart, Fondazione "Policlinico Universitario A. Gemelli", Rome, Italy
| | - L Sollazzi
- Department of Anesthesiology and Intensive Care Medicine, Catholic University of the Sacred Heart, Fondazione "Policlinico Universitario A. Gemelli", Rome, Italy
| | - M Antonelli
- Department of Anesthesiology and Intensive Care Medicine, Catholic University of the Sacred Heart, Fondazione "Policlinico Universitario A. Gemelli", Rome, Italy
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93
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Bertani A, Ferrari P, Terzo D, Russo E, Burgio G, De Monte L, Raffaele F, Droghetti A, Crisci R. A comprehensive protocol for physiokinesis therapy and enhanced recovery after surgery in patients undergoing video-assisted thoracoscopic surgery lobectomy. J Thorac Dis 2018; 10:S499-S511. [PMID: 29629196 DOI: 10.21037/jtd.2018.02.55] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Background Video-assisted thoracoscopic surgery (VATS) lobectomy has recently been adopted as the gold standard surgical option for the treatment of early stage non-small cell lung cancer. Enhanced recovery after surgery (ERAS) is being progressively adopted in thoracic surgery to improve the postoperative outcomes. Even if the benefits of ERAS are universally accepted, to date a standardized and uniform approach has not been described in the medical literature. The Italian VATS group has recently proposed to include in the VATS lobectomy database a structured protocol for ERAS. Methods The ERAS section of the Italian VATS group is proposing a comprehensive ERAS protocol within the VATS lobectomy database, allowing the prospective collection of a dedicated set of data. Separate sections of the protocol are dedicated to different topics of ERAS. This study is specifically dedicated to the section of physiokinesis therapy. The medical literature will be extensively reviewed and a physiotherapy (PT) protocol of ERAS will be presented and discussed. A seta of structured clinical pathways will also be suggested for adoption in the VATS Group database. Discussion Pre- and post-operative adoption of an ERAS protocol in patients undergoing VATS lobectomy may promote an improved post-operative course, a shorter hospital stay and an overall more comfortable patients' experience. The mainstays of a physiokinesis therapy ERAS protocol are patients' education, constant physical and respiratory therapy sessions, and adoption of adequate devices. Although many studies have investigated the usefulness of physical and respiratory physiokinesis therapy, a comprehensive ERAS protocol for VATS lobectomy patients has not yet been described. The proposed ERAS platform, adopted by the VATS Group database, will contribute to a prospective data collection and allow a scientific analysis of the results.
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Affiliation(s)
- Alessandro Bertani
- Division of Thoracic Surgery and Lung Transplantation, Department for the Treatment and Study of Cardiothoracic Diseases and Cardiothoracic Transplantation, IRCCS ISMETT - UPMC, Palermo, Italy
| | - Paolo Ferrari
- Division of Thoracic Surgery, A. Businco Cancer Center, Ospedale Brotzu, Cagliari, Italy
| | - Danilo Terzo
- Rehabilitation Services, IRCCS ISMETT - UPMC, Palermo, Italy
| | - Emanuele Russo
- Division of Thoracic Surgery and Lung Transplantation, Department for the Treatment and Study of Cardiothoracic Diseases and Cardiothoracic Transplantation, IRCCS ISMETT - UPMC, Palermo, Italy
| | - Gaetano Burgio
- Department of Anesthesia and CCM, IRCCS ISMETT - UPMC, Palermo, Italy
| | - Lavinia De Monte
- Division of Thoracic Surgery and Lung Transplantation, Department for the Treatment and Study of Cardiothoracic Diseases and Cardiothoracic Transplantation, IRCCS ISMETT - UPMC, Palermo, Italy
| | - Francesco Raffaele
- Division of Thoracic Surgery and Lung Transplantation, Department for the Treatment and Study of Cardiothoracic Diseases and Cardiothoracic Transplantation, IRCCS ISMETT - UPMC, Palermo, Italy
| | | | - Roberto Crisci
- Division of Thoracic Surgery, University of L'Aquila, L'Aquila, Italy
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94
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Falcão LFDR, Battisti FDPL, Oliveira Júnior ISD, Ferez D. Pulmonary function alteration in laparoscopic surgery with pneumoperitoneum and abdominal wall elevation. BRAZILIAN JOURNAL OF ANESTHESIOLOGY (ENGLISH EDITION) 2018. [PMID: 29029760 PMCID: PMC9391747 DOI: 10.1016/j.bjane.2017.09.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
Affiliation(s)
- Luiz Fernando Dos Reis Falcão
- Universidade Federal de São Paulo (Unifesp), Escola Paulista de Medicina, Disciplina de Anestesiologia, Dor e Medicina Intensiva, São Paulo, SP, Brasil.
| | - Fabrício de Paula Leite Battisti
- Universidade Federal de São Paulo (Unifesp), Escola Paulista de Medicina, Disciplina de Anestesiologia, Dor e Medicina Intensiva, São Paulo, SP, Brasil
| | - Itamar Souza de Oliveira Júnior
- Universidade Federal de São Paulo (Unifesp), Escola Paulista de Medicina, Disciplina de Anestesiologia, Dor e Medicina Intensiva, São Paulo, SP, Brasil
| | - David Ferez
- Universidade Federal de São Paulo (Unifesp), Escola Paulista de Medicina, Disciplina de Anestesiologia, Dor e Medicina Intensiva, São Paulo, SP, Brasil
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Abstract
BACKGROUND Recent clinical studies suggest that the magnitude of the second gas effect is considerably greater on arterial blood partial pressures of volatile agents than on end-expired partial pressures, and a significant second gas effect on blood partial pressures of oxygen and volatile agents occurs even at relatively low rates of nitrous oxide uptake. We set out to further investigate the mechanism of this phenomenon with the help of mathematical modeling. METHODS Log-normal distributions of ventilation and blood flow were generated representing the range of ventilation-perfusion scatter seen in patients during general anesthesia. Mixtures of nominal delivered concentrations of volatile agents (desflurane, isoflurane and diethyl ether) with and without 70% nitrous oxide were mathematically modeled using steady state mass-balance principles, and the magnitude of the second gas effect calculated as an augmentation ratio for the volatile agent, defined as the partial pressure in the presence to that in the absence of nitrous oxide. RESULTS Increasing the degree of mismatch increased the second gas effect in blood. Simultaneously, the second gas effect decreased in the gas phase. The increase in blood was greatest for the least soluble gas, desflurane, and least for the most soluble gas, diethyl ether, while opposite results applied in the gas phase. CONCLUSIONS Modeling of ventilation-perfusion inhomogeneity confirms that the second gas effect is greater in blood than in expired gas. Gas-based minimum alveolar concentration readings may therefore underestimate the depth of anesthesia during nitrous oxide anesthesia with volatile agents. The effect on minimum alveolar concentration is likely to be most pronounced for the less soluble volatile agents in current use.
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96
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Selvi O, Bayserke O, Tulgar S. Use of Femoral and Sciatic Nerve Block Combination in Severe Emphysematous Lung Disease for Femoral Popliteal Arterial Bypass Surgery. Cureus 2018; 10:e2140. [PMID: 29632750 PMCID: PMC5880585 DOI: 10.7759/cureus.2140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Regional anesthesia is a widely used anesthesia technique for high-risk patients with severe vascular or pulmonary diseases in which general anesthesia is considered harmful and should be avoided. In this case, we present the use of femoral-sciatic nerve block combination for a 65-year-old, ASA IV, male patient who had severe emphysematous lung disease and was planned for a right femoral-popliteal arterial bypass surgery. He had severe pulmonary disease, hypertension, peripheral vascular disease, and was on clopidogrel treatment. Due to his existing comorbidities, regional anesthesia was considered the right method. The combination of femoral and sciatic nerve block was successfully used for the operation, which lasted for one hour and fifty minutes under sedation, and was continuously supplied with a propofol infusion. The patient was safely discharged to the surgical ward with no pain. The femoral block and sciatic block combination is described as one of the most useful, and at the same time, the most ignored anesthetic method. This technique is considered a standard technique and is often taught early in training; however, its use seems to be underestimated as there are only a few cases documented in Turkey. The aim of this case is to serve as a reminder of its significant value in patients who are not appropriate for general anesthesia and neuraxial blocks.
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Affiliation(s)
- Onur Selvi
- Aneasthesiology and Reanimation, Maltepe University Faculty of Medicine
| | - Olgar Bayserke
- Cardiac and Vascular Surgery, Maltepe University Facullty of Medicine
| | - Serkan Tulgar
- Anaesthesiology and Reanimation, Maltepe University Faculty of Medicine
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97
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Associations between intraoperative ventilator settings during one-lung ventilation and postoperative pulmonary complications: a prospective observational study. BMC Anesthesiol 2018; 18:13. [PMID: 29370755 PMCID: PMC5785851 DOI: 10.1186/s12871-018-0476-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Accepted: 01/19/2018] [Indexed: 11/20/2022] Open
Abstract
Background The interest in perioperative lung protective ventilation has been increasing. However, optimal management during one-lung ventilation (OLV) remains undetermined, which not only includes tidal volume (VT) and positive end-expiratory pressure (PEEP) but also inspired oxygen fraction (FIO2). We aimed to investigate current practice of intraoperative ventilation during OLV, and analyze whether the intraoperative ventilator settings are associated with postoperative pulmonary complications (PPCs) after thoracic surgery. Methods We performed a prospective observational two-center study in Japan. Patients scheduled for thoracic surgery with OLV from April to October 2014 were eligible. We recorded ventilator settings (FIO2, VT, driving pressure (ΔP), and PEEP) and calculated the time-weighted average (TWA) of ventilator settings for the first 2 h of OLV. PPCs occurring within 7 days of thoracotomy were investigated. Associations between ventilator settings and the incidence of PPCs were examined by multivariate logistic regression. Results We analyzed perioperative information, including preoperative characteristics, ventilator settings, and details of surgery and anesthesia in 197 patients. Pressure control ventilation was utilized in most cases (92%). As an initial setting for OLV, an FIO2 of 1.0 was selected for more than 60% of all patients. Throughout OLV, the median TWA FIO2 of 0.8 (0.65-0.94), VT of 6.1 (5.3-7.0) ml/kg, ΔP of 17 (15-20) cm H2O, and PEEP of 4 (4-5) cm H2O was applied. Incidence rate of PPCs was 25.9%, and FIO2 was independently associated with the occurrence of PPCs in multivariate logistic regression. The adjusted odds ratio per FIO2 increase of 0.1 was 1.30 (95% confidence interval: 1.04-1.65, P = 0.0195). Conclusions High FIO2 was applied to the majority of patients during OLV, whereas low VT and slight degree of PEEP were commonly used in our survey. Our findings suggested that a higher FIO2 during OLV could be associated with increased incidence of PPCs. Electronic supplementary material The online version of this article (10.1186/s12871-018-0476-x) contains supplementary material, which is available to authorized users.
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Pereira JLF, Galant LH, Garcia E, Rosa LHTD, Brandão ABDM, Marroni CA. Ventilatory support and hospital stay after liver transplant in cirrhotic patients with hepatopulmonary syndrome. EINSTEIN-SAO PAULO 2017; 15:322-326. [PMID: 29091154 PMCID: PMC5823046 DOI: 10.1590/s1679-45082017ao4081] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2017] [Accepted: 07/30/2017] [Indexed: 11/22/2022] Open
Abstract
Objective To compare mechanical ventilation time, need for non-invasive ventilation, length of intensive care unit stay, and hospital stay after liver transplant in cirrhotic patients with and with no diagnosis of hepatopulmonary syndrome. Methods This was a prospective cohort study with a convenience sample of 178 patients (92 with hepatopulmonary syndrome) who were diagnosed as alcoholic or hepatitis C virus cirrhosis. The statistical analysis included Kolmogorov-Smirnov test and Students t test. Data were analyzed using SPSS version 16.0, and p values <0.05 were considered significant. Results Out of 178 patients, 90 underwent transplant (48 with no hepatopulmonary syndrome). The Group diagnosed with Hepatopulmonary Syndrome had longer mechanical ventilation time (19.5±4.3 hours versus 12.5±3.3 hours; p=0.02), an increased need for non-invasive ventilation (12 versus 2; p=0.01), longer intensive care unit stay (6.7±2.1 days versus 4.6±1.5 days; p=0.02) and longer hospital stay (24.1±4.3 days versus 20.2±3.9 days; p=0.01). Conclusion Cirrhotic patients Group diagnosed with Hepatopulmonary Syndrome had higher mechanical ventilation time, more need of non-invasive ventilation, as well as longer intensive care unit and hospital stay.
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Affiliation(s)
| | | | - Eduardo Garcia
- Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre, RS, Brazil
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Falcão LFDR, Battisti FDPL, Oliveira Júnior ISD, Ferez D. [Pulmonary function alteration in laparoscopic surgery with pneumoperitoneum and abdominal wall elevation]. Rev Bras Anestesiol 2017; 68:215-216. [PMID: 29029760 DOI: 10.1016/j.bjan.2017.08.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Accepted: 08/29/2017] [Indexed: 10/18/2022] Open
Affiliation(s)
- Luiz Fernando Dos Reis Falcão
- Universidade Federal de São Paulo (Unifesp), Escola Paulista de Medicina, Disciplina de Anestesiologia, Dor e Medicina Intensiva, São Paulo, SP, Brasil.
| | - Fabrício de Paula Leite Battisti
- Universidade Federal de São Paulo (Unifesp), Escola Paulista de Medicina, Disciplina de Anestesiologia, Dor e Medicina Intensiva, São Paulo, SP, Brasil
| | - Itamar Souza de Oliveira Júnior
- Universidade Federal de São Paulo (Unifesp), Escola Paulista de Medicina, Disciplina de Anestesiologia, Dor e Medicina Intensiva, São Paulo, SP, Brasil
| | - David Ferez
- Universidade Federal de São Paulo (Unifesp), Escola Paulista de Medicina, Disciplina de Anestesiologia, Dor e Medicina Intensiva, São Paulo, SP, Brasil
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100
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Xie SN, Ye H, Li JF, An LX. Sevoflurane neurotoxicity in neonatal rats is related to an increase in the GABAAR α1/GABAAR α2 ratio. J Neurosci Res 2017; 95:2367-2375. [PMID: 28843008 DOI: 10.1002/jnr.24118] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2016] [Revised: 05/23/2017] [Accepted: 06/26/2017] [Indexed: 01/24/2023]
Affiliation(s)
- Si-Ning Xie
- Department of Anesthesiology, Beijing TianTan Hospital; Capital Medical University; No. 6 Tiantan Xili, Dongcheng District Beijing 100050 China
| | - Hong Ye
- Department of Anesthesiology, Beijing TianTan Hospital; Capital Medical University; No. 6 Tiantan Xili, Dongcheng District Beijing 100050 China
| | - Jun-Fa Li
- Department of Neurobiology; Capital Medical University; No. 10 Xi-Tou-Tiao, You’an Men Wai, Fengtai District Beijing 100069 China
| | - Li-Xin An
- Department of Anesthesiology, Beijing TianTan Hospital; Capital Medical University; No. 6 Tiantan Xili, Dongcheng District Beijing 100050 China
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