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Shimamura J, Yokoyama Y, Kuno T, Fujisaki T, Fukuhara S, Takayama H, Ota T, Chu MW. Systematic review and network meta-analysis of various nadir temperature strategies for hypothermic circulatory arrest for aortic arch surgery. Asian Cardiovasc Thorac Ann 2023; 31:102-114. [PMID: 36571785 DOI: 10.1177/02184923221144959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
BACKGROUND The optimal nadir temperature for hypothermic circulatory arrest during aortic arch surgery remains unclear. We aimed to assess and compare clinical outcomes of all three temperature strategies (deep, moderate, and mild hypothermia) using a network meta-analysis. METHODS After literature search with MEDLINE and EMBASE through December 2021, studies comparing clinical outcomes with deep (<20°C), moderate (20-28°C), or mild (>28°C) hypothermic circulatory arrest were included. The outcomes of interest were perioperative mortality, stroke, transient ischemia attack (TIA), acute kidney injury (AKI), postoperative bleeding, operative time, and length of hospital stay. RESULTS Twenty-four comparative studies were identified, including 6018 patients undergoing aortic arch surgery using hypothermic circulatory arrest (deep: 2,978, moderate: 2,525, and mild: 515). Compared to deep hypothermia, mild and moderate hypothermia were associated with lower mortality (mild vs. deep: odds ratio [OR] 0.50; 95% confidence interval (CI) 0.29-0.87, moderate vs. deep: OR 0.68; 95% CI 0.54-0.86). In addition, mild hypothermia was associated with lower stroke (OR 0.50; 95% CI 0.28-0.89), AKI (OR 0.36; 95% CI 0.15-0.88) and postoperative bleeding (OR 0.55; 95% CI 0.31-0.97) compared to deep hypothermia. There was no significant difference between mild and moderate hypothermia in mortality, AKI or bleeding occurrence, while mild hypothermia was associated with shorter operative time and hospital stay. There was no significant difference in TIA rate among three groups. CONCLUSIONS Mild hypothermia was associated with overall more favorable clinical outcomes with comparable neurological complications compared to deep hypothermia. Furthermore, considering the shorter operative time and hospital stay compared with moderate hypothermia, mild hypothermia may be warranted when appropriate adjunctive cerebral perfusion is employed.
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Affiliation(s)
- Junichi Shimamura
- Division of Cardiac Surgery, Department of Surgery, 10033London Health Sciences Centre, London, Ontario, Canada
| | - Yujiro Yokoyama
- Department of Surgery, 14352Easton Hospital, Easton, PA, USA
| | - Toshiki Kuno
- Division of Cardiology, Montefiore Medical center, Albert Einstein Medical College, New York, NY, USA
| | - Tomohiro Fujisaki
- Department of Medicine, Icahn School of Medicine at Mount Sinai, Mount Sinai St Luke's and West, NY, USA
| | - Shinichi Fukuhara
- Department of Cardiac Surgery, University of Michigan Cardiovascular Center, Ann Arbor, MI, USA
| | - Hiroo Takayama
- Division of Cardiothoracic Surgery, Department of Surgery, New York Presbyterian Hospital, Columbia University Medical Center, New York, NY, USA
| | - Takeyoshi Ota
- Section of Cardiac and Thoracic Surgery, Department of Surgery, 2462The University of Chicago, Chicago, IL, USA
| | - Michael Wa Chu
- Division of Cardiac Surgery, Department of Surgery, 10033London Health Sciences Centre, London, Ontario, Canada
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Mattingly TK, McDavid A, Wolf A, Lieber G, Solar R, Lee D, Lownie SP. The Complex Relationship Between Cooling Parameters and Neuroprotection in a Model of Selective Hypothermia. Front Neurol 2022; 13:874701. [PMID: 35547387 PMCID: PMC9081928 DOI: 10.3389/fneur.2022.874701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Accepted: 03/21/2022] [Indexed: 11/13/2022] Open
Abstract
Background Hypothermia remains the best studied neuroprotectant. Despite extensive positive large and small animal data, side effects continue to limit human applications. Selective hypothermia is an efficient way of applying neuroprotection to the brain without the systemic complications of global hypothermia. However, optimal depth and duration of therapeutic hypothermia are still unknown. We analyzed a large animal cohort study of selective hypothermia for statistical relationships between depth or duration of hypothermia and the final stroke volume. Methods A cohort of 30 swine stroke subjects provided the dataset for normothermic and selective hypothermic animals. Hypothermic parameters including duration, temperature nadir, and an Area Under the Curve measurement for 34 and 30°C were correlated with the final infarct volumes measured by MRI and histology. Results Between group comparisons continue to demonstrate a reduction in infarct volume with selective hypothermia. Histologically-derived infarct volumes were 1.2 mm3 smaller in hypothermia-treated pigs (P = 0.04) and showed a similar, but non-significant reduction in MRI (P = 0.15). However, within the selective hypothermia group, more intense cooling, as measured through increased AUC 34 and decreased temperature nadir was associated with larger infarct proportions by MRI [Pearson's r = 0.48 (p = 0.05) and r = -0.59 (p = 0.01), respectively]. Reevaluation of the entire cohort with quadratic regression demonstrated a U-shaped pattern, wherein the average infarct proportion was minimized at 515 degree-minutes (AUC34) of cooling, and increased thereafter. In a single case of direct brain tissue oxygen monitoring during selective hypothermia, brain tissue oxygen strongly correlated with brain temperature reduction over the course of selective hypothermia to 23°C. Conclusions In a large animal model of selective hypothermia applied to focal ischemia, there is a non-monotone relationship between duration and depth of hypothermia and stroke volume reduction. This suggests a limit to depth or duration of selective hypothermia for optimal neuroprotection. Further research is required to delineate more precise depth and duration limits for selective hypothermia.
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Affiliation(s)
- Thomas K Mattingly
- Department of Neurosurgery, University of Rochester, Rochester, NY, United States
| | - Andrew McDavid
- Department of Biostatistics and Computational Biology, University of Rochester, Rochester, NY, United States
| | - Amparo Wolf
- Department of Neurosurgery, Health Sciences North, Sudbury, ON, Canada
| | - Glen Lieber
- ThermopeutiX, Inc., San Diego, CA, United States
| | - Ronald Solar
- ThermopeutiX, Inc., San Diego, CA, United States
| | - Donald Lee
- Department of Medical Imaging, London Health Science Centre, London, ON, Canada
| | - Stephen P Lownie
- Division of Neurosurgery, Halifax Infirmary, Halifax, NS, Canada
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3
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Angus SA, Henderson WR, Banoei MM, Molgat‐Seon Y, Peters CM, Parmar HR, Griesdale DEG, Sekhon M, Sheel AW, Winston BW, Dominelli PB. Therapeutic hypothermia attenuates physiologic, histologic, and metabolomic markers of injury in a porcine model of acute respiratory distress syndrome. Physiol Rep 2022; 10:e15286. [PMID: 35510328 PMCID: PMC9069168 DOI: 10.14814/phy2.15286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 03/29/2022] [Accepted: 04/02/2022] [Indexed: 06/14/2023] Open
Abstract
Acute respiratory distress syndrome (ARDS) is a lung injury characterized by noncardiogenic pulmonary edema and hypoxic respiratory failure. The purpose of this study was to investigate the effects of therapeutic hypothermia on short-term experimental ARDS. Twenty adult female Yorkshire pigs were divided into four groups (n = 5 each): normothermic control (C), normothermic injured (I), hypothermic control (HC), and hypothermic injured (HI). Acute respiratory distress syndrome was induced experimentally via intrapulmonary injection of oleic acid. Target core temperature was achieved in the HI group within 1 h of injury induction. Cardiorespiratory, histologic, cytokine, and metabolomic data were collected on all animals prior to and following injury/sham. All data were collected for approximately 12 h from the beginning of the study until euthanasia. Therapeutic hypothermia reduced injury in the HI compared to the I group (histological injury score = 0.51 ± 0.18 vs. 0.76 ± 0.06; p = 0.02) with no change in gas exchange. All groups expressed distinct phenotypes, with a reduction in pro-inflammatory metabolites, an increase in anti-inflammatory metabolites, and a reduction in inflammatory cytokines observed in the HI group compared to the I group. Changes to respiratory system mechanics in the injured groups were due to increases in lung elastance (E) and resistance (R) (ΔE from pre-injury = 46 ± 14 cmH2 O L-1 , p < 0.0001; ΔR from pre-injury: 3 ± 2 cmH2 O L-1 s- , p = 0.30) rather than changes to the chest wall (ΔE from pre-injury: 0.7 ± 1.6 cmH2 O L-1 , p = 0.99; ΔR from pre-injury: 0.6 ± 0.1 cmH2 O L-1 s- , p = 0.01). Both control groups had no change in respiratory mechanics. In conclusion, therapeutic hypothermia can reduce markers of injury and inflammation associated with experimentally induced short-term ARDS.
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Affiliation(s)
- Sarah A. Angus
- Department of KinesiologyUniversity of WaterlooWaterlooOntarioCanada
| | - William R. Henderson
- Division of Critical Care MedicineDepartment of MedicineFaculty of MedicineUniversity of British ColumbiaVancouverBritish ColumbiaCanada
| | - Mohammad M. Banoei
- Department of Critical Care MedicineUniversity of CalgaryCalgaryAlbertaCanada
| | - Yannick Molgat‐Seon
- Department Kinesiology and Applied HealthUniversity of WinnipegWinnipegManitobaCanada
| | - Carli M. Peters
- School of KinesiologyUniversity of British ColumbiaVancouverBritish ColumbiaCanada
| | - Hanna R. Parmar
- School of KinesiologyUniversity of British ColumbiaVancouverBritish ColumbiaCanada
| | - Donald E. G. Griesdale
- Division of Critical Care MedicineDepartment of MedicineFaculty of MedicineUniversity of British ColumbiaVancouverBritish ColumbiaCanada
- Department of AnesthesiologyPharmacology & TherapeuticsUniversity of British ColumbiaVancouverBritish ColumbiaCanada
| | - Mypinder Sekhon
- Division of Critical Care MedicineDepartment of MedicineFaculty of MedicineUniversity of British ColumbiaVancouverBritish ColumbiaCanada
| | - Andrew William Sheel
- School of KinesiologyUniversity of British ColumbiaVancouverBritish ColumbiaCanada
| | - Brent W. Winston
- Department of Critical Care MedicineUniversity of CalgaryCalgaryAlbertaCanada
- Departments of Medicine and Biochemistry & Molecular BiologyUniversity of CalgaryCalgaryAlbertaCanada
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Patel PM, Chen EPC. Optimal brain protection in aortic arch surgery. Indian J Thorac Cardiovasc Surg 2022; 38:36-43. [PMID: 35463699 PMCID: PMC8980966 DOI: 10.1007/s12055-021-01212-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2021] [Revised: 05/03/2021] [Accepted: 05/05/2021] [Indexed: 10/20/2022] Open
Abstract
There is considerable debate with regard to the optimal cerebral protection strategy during aortic arch surgery. There are three contemporary techniques in use which include straight deep hypothermic circulatory arrest (DHCA), DHCA with retrograde cerebral perfusion (DHCA + RCP), and moderate hypothermic circulatory arrest with antegrade cerebral perfusion (MHCA + ACP). Appropriate application of these methods ensures appropriate cerebral, myocardial, and visceral protection. Each of these techniques has benefits and drawbacks and ensuring coordinated circulation management strategy is critical to safe performance of aortic arch surgery. In this report, we will review various cannulation strategies, review logistics of hypothermia, and review the relevant literature to outline the strengths and weaknesses of these various cerebral protection strategies.
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5
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Ise H, Oyama K, Kunioka S, Shirasaka T, Kanda H, Akhyari P, Kamiya H. Hypothermic circulatory arrest does not induce coagulopathy in vitro. J Artif Organs 2022; 25:314-322. [PMID: 35303203 DOI: 10.1007/s10047-022-01324-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Accepted: 03/03/2022] [Indexed: 11/27/2022]
Abstract
Hypothermic circulatory arrest (HCA) is an essential procedure during aortic surgery to protect organs; however, hypothermia is believed to cause coagulopathy, which is a major fatal complication. This study aimed to clarify the impact of hypothermia on coagulation by eliminating clinical biases in vitro. In the hypothermic storage study, blood samples from five healthy volunteers were stored at 37 ℃ (group N) for 3 h or at 20 ℃ for 2 h, followed by 1 h of rewarming at 37 ℃ (group H). Thromboelastography was performed before and after 3 h of storage. In the mock circulation loop (MCL) study, blood samples were placed in the MCL and (a) maintained at 37 ℃ for 4 h (group N, n = 5), or (b) cooled to 20 ℃ to simulate HCA with a 0.1 L/min flow rate for 3 h and then rewarmed to 37 ℃ (group H, n = 5). The total MCL duration was 4 h, and the flow rate was maintained at 1 L/min, except during HCA. Blood samples collected 15 min after the beginning and end of MCL were subjected to standard laboratory tests and rotational thromboelastometry analyses. Hypothermia had no impact on coagulation in both the hypothermic storage and MCL studies. MCL significantly decreased the platelet counts and clot elasticity in the INTEM and EXTEM assays; however, there was no effect on fibrinogen contribution measured by FIBTEM. Hypothermia does not cause irreversible coagulopathy in vitro; however, MCL decreases coagulation due to the deterioration of platelets.
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Affiliation(s)
- Hayato Ise
- Department of Cardiac Surgery, Asahikawa Medical University, Midorigaoka-Higashi 2-1-1-1, Asahikawa, Hokkaido, 078-8510, Japan.,Department of Cardiovascular Surgery, Heinrich Heine University, Düsseldorf, Germany
| | - Kyohei Oyama
- Department of Cardiac Surgery, Asahikawa Medical University, Midorigaoka-Higashi 2-1-1-1, Asahikawa, Hokkaido, 078-8510, Japan.
| | - Shingo Kunioka
- Department of Cardiac Surgery, Asahikawa Medical University, Midorigaoka-Higashi 2-1-1-1, Asahikawa, Hokkaido, 078-8510, Japan
| | - Tomonori Shirasaka
- Department of Cardiac Surgery, Asahikawa Medical University, Midorigaoka-Higashi 2-1-1-1, Asahikawa, Hokkaido, 078-8510, Japan
| | - Hirotsugu Kanda
- Department of Anesthesiology and Critical Care Medicine, Asahikawa Medical University, Asahikawa, Japan
| | - Payam Akhyari
- Department of Cardiovascular Surgery, Heinrich Heine University, Düsseldorf, Germany
| | - Hiroyuki Kamiya
- Department of Cardiac Surgery, Asahikawa Medical University, Midorigaoka-Higashi 2-1-1-1, Asahikawa, Hokkaido, 078-8510, Japan
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6
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The Role of Deep Hypothermia in Cardiac Surgery. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2021; 18:ijerph18137061. [PMID: 34280995 PMCID: PMC8297075 DOI: 10.3390/ijerph18137061] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 06/27/2021] [Accepted: 06/28/2021] [Indexed: 12/24/2022]
Abstract
Hypothermia is defined as a decrease in body core temperature to below 35 °C. In cardiac surgery, four stages of hypothermia are distinguished: mild, moderate, deep, and profound. The organ protection offered by deep hypothermia (DH) enables safe circulatory arrest as a prerequisite to carrying out cardiac surgical intervention. In adult cardiac surgery, DH is mainly used in aortic arch surgery, surgical treatment of pulmonary embolism, and acute type-A aortic dissection interventions. In surgery treating congenital defects, DH is used to assist aortic arch reconstructions, hypoplastic left heart syndrome interventions, and for multi-stage treatment of infants with a single heart ventricle during the neonatal period. However, it should be noted that a safe duration of circulatory arrest in DH for the central nervous system is 30 to 40 min at most and should not be exceeded to prevent severe neurological adverse events. Personalized therapy for the patient and adequate blood temperature monitoring, glycemia, hematocrit, pH, and cerebral oxygenation is a prerequisite and indispensable part of DH.
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7
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Lou X, Chen EP. Goal-directed cerebral perfusion in aortic arch surgery: scientific leap or hype? Asian Cardiovasc Thorac Ann 2020; 29:605-611. [PMID: 32438816 DOI: 10.1177/0218492320929212] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Although significant advancements in cerebral protection strategies in aortic surgery have been achieved in recent years, controversy remains on what constitutes the optimal strategy. Deep hypothermic circulatory arrest alone is a viable approach in many instances, but the need for a prolonged duration of circulatory arrest and increasing case complexity have led to the utilization of adjunctive cerebral perfusion strategies. In this review, we discuss the efficacy of deep hypothermic circulatory arrest and its limitations, the role of retrograde cerebral perfusion and unilateral and bilateral antegrade cerebral perfusion, and the trend towards goal-directed perfusion strategies, all emphasizing the pressing need for randomized clinical trials to better define the optimal strategy.
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Affiliation(s)
- Xiaoying Lou
- Division of Cardiothoracic Surgery, Emory University School of Medicine, Atlanta, USA
| | - Edward P Chen
- Division of Cardiothoracic Surgery, Emory University School of Medicine, Atlanta, USA
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8
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Pei X, Zhu SQ, Long X, Qiu BQ, Lin K, Lu F, Xu JJ, Wu YB. Modified Distal Aortic Arch Occlusion During Aortic Arch Replacement. Heart Lung Circ 2020; 29:e245-e252. [PMID: 32430219 DOI: 10.1016/j.hlc.2020.03.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 02/12/2020] [Accepted: 03/11/2020] [Indexed: 12/01/2022]
Abstract
BACKGROUND Circulatory arrest has been identified as an independent risk factor related to postoperative mortality in patients with Stanford type A aortic dissection. This study described a modified technique for distal aortic arch occlusion that markedly shortened the circulatory arrest time. The early results are encouraging. METHODS From May 2016 to September 2018, 51 patients with Stanford type A aortic dissection underwent the modified procedure for aortic arch replacement. All operations were performed via transitory circulatory arrest by clamping the distal aorta between the left common carotid artery and the left subclavian artery. The in-hospital and follow-up data of the treated patients were investigated. RESULTS Successful repair of the involved vasculature was achieved in all patients. One (1) patient died due to postoperative aspiration and infection, and three patients required continuous renal replacement therapy due to poor preoperative renal function. The remaining patients were successfully discharged. The median average circulatory arrest time was 5.0 (3.0-6.0) minutes. No cases of tracheotomy, delayed closure, secondary thoracotomy, or other complications occurred. During the follow-up period of 2.4-18.6 months, the implanted grafts and stented elephant trunks were all fully open and not kinked. CONCLUSIONS A modified distal aortic arch occlusion can considerably shorten the duration of circulatory arrest. Current experience suggests that this approach can serve as a feasible alternative for patients during aortic arch replacement because of its simplicity and satisfactory clinical effects.
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Affiliation(s)
- Xu Pei
- Department of Cardiothoracic Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, People's Republic of China
| | - Shu-Qiang Zhu
- Department of Cardiothoracic Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, People's Republic of China
| | - Xiang Long
- Department of Cardiothoracic Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, People's Republic of China
| | - Bai-Quan Qiu
- Department of Cardiothoracic Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, People's Republic of China
| | - Kun Lin
- Department of Cardiothoracic Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, People's Republic of China
| | - Feng Lu
- Department of Cardiothoracic Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, People's Republic of China
| | - Jian-Jun Xu
- Department of Cardiothoracic Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, People's Republic of China.
| | - Yong-Bing Wu
- Department of Cardiothoracic Surgery, The Second Affiliated Hospital of Nanchang University, Nanchang, Jiangxi Province, People's Republic of China.
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9
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Vaughan BC, Jones MER, Browne IL, Olshavsky JM, Schultz RD. Selective retrograde cerebral cooling in complete cerebral circulatory arrest. Brain Circ 2019; 5:234-240. [PMID: 31950100 PMCID: PMC6950516 DOI: 10.4103/bc.bc_60_19] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 12/09/2019] [Accepted: 12/16/2019] [Indexed: 01/01/2023] Open
Abstract
BACKGROUND AND PURPOSE: Cerebral hypothermia is a known neuroprotectant with promising applications in the treatment of ischemic events. Although systemic cooling is standard in post-cardiac arrest care, the deleterious effects of whole-body cooling have precluded it from translation into a viable treatment option for acute ischemic stroke (AIS). Selective cerebral cooling has been proposed as a method to minimize these risks while granting the neuroprotection of therapeutic hypothermia in AIS. METHODS: In a porcine model (n = 3), the efficacy of selective retrograde cerebral cooling through the internal jugular vein was evaluated in the setting of complete cerebral circulatory arrest. Furthermore, a novel endovascular device and cooling system enabling selective retrograde cerebral cooling were studied in a normothermic perfused cadaver. RESULTS AND CONCLUSION: Neurologic assessment of animals receiving this therapy reflected substantial neuroprotection in animals undergoing both 15 min and 30 min of otherwise catastrophic complete cerebral circulatory arrest. The novel endovascular device and cooling system were validated in human anatomy, demonstrating successful cerebral cooling, and feasibility of this mechanism of selective retrograde cerebral cooling.
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Affiliation(s)
| | - Melissa E R Jones
- Voyage Biomedical Inc., Berkeley, CA, United States.,Undergraduate Medical Education, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Ikennah L Browne
- Voyage Biomedical Inc., Berkeley, CA, United States.,Department of Surgery, Division of General Surgery, University of Calgary, Calgary, AB, Canada
| | | | - Robert D Schultz
- Voyage Biomedical Inc., Berkeley, CA, United States.,Section of Cardiac Surgery, Libin Cardiovascular Institute of Alberta, University of Calgary, Calgary, AB, Canada
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10
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Yanase Y, Ito T, Arihara A, Ohkawa A, Numaguchi R, Sato H, Yasuda N, Kuroda Y, Harada R, Kawaharada N. Two-stage repair of DeBakey type IIIb aneurysm, using total arch replacement. Asian Cardiovasc Thorac Ann 2019; 28:7-14. [PMID: 31874575 DOI: 10.1177/0218492319895377] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Background Open repair for chronic DeBakey type IIIb dissecting aortic aneurysm is an invasive procedure involving open proximal anastomosis under hypothermic cardiac arrest, with significant morbidity in high-risk patients. We adopted a two-stage repair strategy using total arch replacement with the elephant trunk technique, which enables aortic crossclamping and avoids open proximal anastomosis at the second-stage graft replacement through a left thoracotomy. Methods From January 2008 to October 2018, we performed DeBakey type IIIb dissecting aortic aneurysm repair in 76 cases, and compared the results of two-stage repair (group 1, 25 cases) and single-stage repair using graft replacement with open proximal anastomosis through a left thoracotomy (group 2, 31 cases). Results In group 1, the elephant trunk technique was successful in all cases. The second intervention included endovascular repair (13 cases) and graft replacement through a left thoracotomy (7 cases). Five cases were followed up conservatively because the false lumen was thrombosed after the elephant trunk technique. Aorta-related adverse events were seen in 5 cases in group 1 (1 re-dissection, 1 rupture, 2 stent-graft-induced new entries, 1 stent-graft migration) and 6 in group 2 (1 additional thoracic endovascular aortic repair, 1 rupture, 4 acute type A aortic dissections). There were no statistical differences between the two groups regarding aorta-related adverse events and death. The postoperative course was acceptable in both groups. Conclusions Single-stage repair with open proximal anastomosis is an option in patients not at high risk for invasive surgery, while two-stage repair is recommended for high-risk patients.
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Affiliation(s)
- Yosuke Yanase
- Department of Cardiovascular Surgery, Sapporo Medical University Hospital, South 1, West 16, Chuo-ku, Sapporo, Hokkaido 060-8543, Japan
| | - Toshiro Ito
- Department of Cardiovascular Surgery, Sapporo Medical University Hospital, South 1, West 16, Chuo-ku, Sapporo, Hokkaido 060-8543, Japan
| | - Ayaka Arihara
- Department of Cardiovascular Surgery, Sapporo Medical University Hospital, South 1, West 16, Chuo-ku, Sapporo, Hokkaido 060-8543, Japan
| | - Akihito Ohkawa
- Department of Cardiovascular Surgery, Sapporo Medical University Hospital, South 1, West 16, Chuo-ku, Sapporo, Hokkaido 060-8543, Japan
| | - Ryosuke Numaguchi
- Department of Cardiovascular Surgery, Sapporo Medical University Hospital, South 1, West 16, Chuo-ku, Sapporo, Hokkaido 060-8543, Japan
| | - Hiroshi Sato
- Department of Cardiovascular Surgery, Sapporo Medical University Hospital, South 1, West 16, Chuo-ku, Sapporo, Hokkaido 060-8543, Japan
| | - Naomi Yasuda
- Department of Cardiovascular Surgery, Sapporo Medical University Hospital, South 1, West 16, Chuo-ku, Sapporo, Hokkaido 060-8543, Japan
| | - Yosuke Kuroda
- Department of Cardiovascular Surgery, Sapporo Medical University Hospital, South 1, West 16, Chuo-ku, Sapporo, Hokkaido 060-8543, Japan
| | - Ryo Harada
- Department of Cardiovascular Surgery, Sapporo Medical University Hospital, South 1, West 16, Chuo-ku, Sapporo, Hokkaido 060-8543, Japan
| | - Nobuyoshi Kawaharada
- Department of Cardiovascular Surgery, Sapporo Medical University Hospital, South 1, West 16, Chuo-ku, Sapporo, Hokkaido 060-8543, Japan
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11
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Lu Y, Zeng X, Jing X, Yin M, Chang MMP, Wei H, Yang Y, Liao X, Dai G, Hu C. Pre-arrest hypothermia improved cardiac function of rats by ameliorating the myocardial mitochondrial injury after cardiac arrest. Exp Biol Med (Maywood) 2019; 244:1186-1192. [PMID: 31530020 DOI: 10.1177/1535370219875434] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
This study investigated the effects of hypothermia induced before cardiac arrest or after return of spontaneous circulation (ROSC) on cardiac function and myocardial mitochondrial injury after ROSC in a rat cardiac arrest model. Sixty healthy, male Wistar rats were randomly divided into the Normothermia group, pre-arrest hypothermia (Pre-HT) group, and post-resuscitation hypothermia (Post-HT) group. The rats underwent 8 min of untreated ventricular fibrillation followed by cardiopulmonary resuscitation. Twelve rats in each group were used to evaluate the left ventricular ejection fraction before ventricular fibrillation and 4 h after ROSC. Survival was determined at 24 h after ROSC. The remaining eight rats in each group were used to detect for heart malondialdehyde, reduced glutathione, adenosine triphosphate levels and mitochondrial histology. Oxygen consumption rate and mitochondrial membrane potential were evaluated 4 h after ROSC; 10 of 12 rats in Pre-HT group, 5 of 12 in Post-HT group, and 6 of 12 in normothermia group were successfully resuscitated. The survival rate of each group was 66.7%, 33.3%, and 25%, respectively. Rats in the Pre-HT group showed less alteration of the mitochondrial ultrastructure and oxidative stress injury, better maintenance of adenine nucleotides, and more preservation of the mitochondrial membrane potential and respiratory function when compared with rats in the Post-HT and normothermia groups. Transient hypothermia is an effective preconditioning stimulus to induce ischemic tolerance in a cardiac arrest model and worthy of further evaluation for potential clinical use. Impact statement In this paper, we investigated the effects of hypothermia induced before ischemia or after ROSC on cardiac function, oxidative stress damage, and myocardial mitochondrial ischemia–reperfusion injury after cardiac arrest in a rat model with VF. We demonstrated that pre-arrest hypothermia conferred greater cardio-protective benefits than delayed post-resuscitation hypothermia, reduced the number of defibrillations required and dosages of epinephrine during CPR, decreased oxidative stress, ameliorated mitochondrial dysfunction, and subsequently improved survival rate.
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Affiliation(s)
- Yuanzheng Lu
- Department of Emergency Medicine, Sun Yat-sen University/The First Affiliated Hospital, Guangzhou 510080, China.,Department of Emergency Medicine, Sun Yat-sen University/The Seventh Affiliated Hospital, Shenzhen 518107, China.,NHC Key Laboratory of Assisted Circulation (Sun Yat-sen University), Guangzhou 510080, China
| | - Xiaoyun Zeng
- Department of Emergency Medicine, Sun Yat-sen University/The First Affiliated Hospital, Guangzhou 510080, China.,NHC Key Laboratory of Assisted Circulation (Sun Yat-sen University), Guangzhou 510080, China
| | - Xiaoli Jing
- Department of Emergency Medicine, Sun Yat-sen University/The First Affiliated Hospital, Guangzhou 510080, China
| | - Meixian Yin
- Department of Emergency Medicine, Sun Yat-sen University/The First Affiliated Hospital, Guangzhou 510080, China.,NHC Key Laboratory of Assisted Circulation (Sun Yat-sen University), Guangzhou 510080, China
| | - Mms Mary P Chang
- Department of Emergency Medicine, University of Texas Southwestern Medical Center, Dallas 75205, USA
| | - Hongyan Wei
- Department of Emergency Medicine, Sun Yat-sen University/The First Affiliated Hospital, Guangzhou 510080, China
| | - Yan Yang
- Department of Emergency Medicine, Sun Yat-sen University/The First Affiliated Hospital, Guangzhou 510080, China.,NHC Key Laboratory of Assisted Circulation (Sun Yat-sen University), Guangzhou 510080, China
| | - Xiaoxing Liao
- Department of Emergency Medicine, Sun Yat-sen University/The First Affiliated Hospital, Guangzhou 510080, China.,Department of Emergency Medicine, Sun Yat-sen University/The Seventh Affiliated Hospital, Shenzhen 518107, China
| | - Gang Dai
- NHC Key Laboratory of Assisted Circulation (Sun Yat-sen University), Guangzhou 510080, China
| | - Chunlin Hu
- Department of Emergency Medicine, Sun Yat-sen University/The First Affiliated Hospital, Guangzhou 510080, China.,NHC Key Laboratory of Assisted Circulation (Sun Yat-sen University), Guangzhou 510080, China
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12
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Neurological Complications in Cardiac Surgery. CURRENT ANESTHESIOLOGY REPORTS 2019. [DOI: 10.1007/s40140-019-00344-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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13
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Lou X, Chen EP. Optimal Cerebral Protection Strategies in Aortic Surgery. Semin Thorac Cardiovasc Surg 2019; 31:146-152. [PMID: 30633977 DOI: 10.1053/j.semtcvs.2019.01.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Accepted: 01/02/2019] [Indexed: 11/11/2022]
Abstract
Cerebral protection strategies in aortic surgery have undergone significant evolution over the years, but its tenets remain rooted in maintenance of hypothermia and cerebral perfusion to limit adverse neurologic outcomes. While deep hypothermic circulatory arrest alone remains a viable approach in many instances, the need for prolonged duration of circulatory arrest and increasing case complexity have driven the utilization of adjunctive cerebral perfusion strategies. In this review, we present the most recent studies published on this topic over the last few years investigating the efficacy of deep hypothermic circulatory arrest, retrograde cerebral perfusion, and unilateral and bilateral antegrade cerebral perfusion, as well as the emerging trend toward mild and moderate HCA temperatures. We highlight the ongoing controversies in the field that underscore the need for large-scale randomized trials using well-defined neurologic endpoints to optimize evidence-based practice in cerebral protection.
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Affiliation(s)
- Xiaoying Lou
- Division of Cardiothoracic Surgery, Emory University School of Medicine, Atlanta, Georgia
| | - Edward P Chen
- Division of Cardiothoracic Surgery, Emory University School of Medicine, Atlanta, Georgia.
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14
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Hosoyama K, Kawamoto S, Kumagai K, Akiyama M, Adachi O, Kawatsu S, Saiki Y. Selective Cerebral Perfusion with the Open Proximal Technique during Descending Thoracic or Thoracoabdominal Aortic Repair: An Option of Choice to Reduce Neurologic Complications. Ann Thorac Cardiovasc Surg 2018; 24:89-96. [PMID: 29375096 DOI: 10.5761/atcs.oa.17-00138] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
PURPOSE Selective cerebral perfusion with the open proximal technique for thoracoabdominal aortic repair has not been conclusively validated because of its procedural complexity and unreliability. We report the clinical outcomes, particularly the cerebroneurological complications, of an open proximal procedure using selective cerebral perfusion. METHODS A retrospective chart review identified 30 patients between 2007 and 2015 who underwent aortic repair through left lateral thoracotomy with selective cerebral perfusion, established through endoluminal brachiocephalic and left carotid artery and retrograde left axillary artery. RESULTS The mean durations of the open proximal procedure and cerebral ischemia (the duration of the open proximal procedure minus the duration of selective cerebral perfusion) were 110.3 ± 40.1 min and 24.8 ± 13.0 min, respectively. There were two cases (7%) of permanent neurologic dysfunction (PND) but no in-hospital deaths. Multivariate analysis identified the duration of cerebral ischemia as an independent risk factor for neurologic complications including temporary neurologic dysfunction (TND; odds ratio (OR): 1.13; p = 0.007), but no correlation was found between selective cerebral perfusion duration and neurologic complications. CONCLUSION Despite the relatively long duration of the open proximal procedure, selective cerebral perfusion has a potential to protect against cerebral complications during thoracic aortic repair through a left lateral thoracotomy.
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Affiliation(s)
- Katsuhiro Hosoyama
- Division of Cardiovascular Surgery, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Shunsuke Kawamoto
- Division of Cardiovascular Surgery, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Kiichiro Kumagai
- Division of Cardiovascular Surgery, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Masatoshi Akiyama
- Division of Cardiovascular Surgery, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Osamu Adachi
- Division of Cardiovascular Surgery, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Satoshi Kawatsu
- Division of Cardiovascular Surgery, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
| | - Yoshikatsu Saiki
- Division of Cardiovascular Surgery, Tohoku University Graduate School of Medicine, Sendai, Miyagi, Japan
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15
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Fernández Suárez FE, Fernández Del Valle D, González Alvarez A, Pérez-Lozano B. Intraoperative care for aortic surgery using circulatory arrest. J Thorac Dis 2017; 9:S508-S520. [PMID: 28616347 PMCID: PMC5462730 DOI: 10.21037/jtd.2017.04.67] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2017] [Accepted: 04/06/2017] [Indexed: 11/06/2022]
Abstract
The total circulatory arrest (CA) is necessary to achieve optimal surgical conditions in certain aortic pathologies, especially in those affecting the ascending aorta and aortic arch. During this procedure it is necessary to protect all the organs of ischemia, especially those of the central nervous system and for this purpose several strategies have been developed. The first and most important protective method is systemic hypothermia. The degree of hypothermia and the route of application have been evolving and currently tend to use moderate hypothermia (MH) (20.1-28 °C) associated with unilateral or bilateral selective cerebral perfusion methods. In this way the neurological results are better, the interval of security is greater and the times of extracorporeal circulation are smaller. Even so, it is necessary to take into account that there is the possibility of ischemia in the lower part of the body, especially of the abdominal viscera and the spinal cord, therefore the time of circulatory stop should be limited and not to exceed 80 minutes. Evidence of possible neurological drug protection is very weak and only mannitol, magnesium, and statins can produce some benefit. Inhalational anesthetics and some intravenous seem to have advantages, but more studies would be needed to test their long-term benefit. Other important parameters to be monitored during these procedures are blood glucose, anemia and coagulation disorders and acid-base balance. The recommended monitoring is common in complex cardiovascular procedures and it is of special importance the neurological monitoring that can be performed with several techniques, although currently the most used are Bispectral Index (BIS) and Near-Infrared Spectroscopy (NIRS). It is also essential to monitor the temperature routinely at the nasopharyngeal and bladder level and it is important to control coagulation with rotational thromboelastometry (ROTEM).
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Affiliation(s)
| | | | - Adrián González Alvarez
- Department of Anesthesiology, Central University Hospital of Asturias, Oviedo, Asturias, Spain
| | - Blanca Pérez-Lozano
- Department of Anesthesiology, Central University Hospital of Asturias, Oviedo, Asturias, Spain
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