Abstract
Background: Perioperative hypothermia has been reported to increase the occurrence of cardiovascular complications. By increasing the activity of sympathetic nervous system, perioperative hypothermia also has the potential to increase cardiac injury and dysfunction associated with subarachnoid hemorrhage. Methods: The Intraoperative Hypothermia for Aneurysm Surgery Trial randomized patients undergoing cerebral aneurysm surgery to intraoperative hypothermia (n = 499, 33.3° ± 0.8°C) or normothermia (n = 501, 36.7° ± 0.5°C). Cardiovascular events (hypotension, arrhythmias, vasopressor use, myocardial infarction, and others) were prospectively followed until 3-month follow-up and were compared in hypothermic and normothermic patients. A subset of 62 patients (hypothermia, n = 33; normothermia, n = 29) also had preoperative and postoperative (within 24 h) measurement of cardiac troponin-I and echocardiography to explore the association between perioperative hypothermia and subarachnoid hemorrhage-associated myocardial injury and left ventricular function. Results: There was no difference between hypothermic and normothermic patients in the occurrence of any single cardiovascular event or in composite cardiovascular events. There was no difference in mortality (6%) between groups, and there was only a single primary cardiovascular death (normothermia). There was no difference between hypothermic and normothermic patients in postoperative versus preoperative left ventricular regional wall motion or ejection fraction. Compared with preoperative values, hypothermic patients had no postoperative increase in cardiac troponin-I (median change 0.00 μg/l), whereas normothermic patients had a small postoperative increase (median change + 0.01 μg/l, P = 0.038). Conclusion: In patients undergoing cerebral aneurysm surgery, perioperative hypothermia was not associated with an increased occurrence of cardiovascular events.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 327-342 |
| Number of pages | 16 |
| Journal | Anesthesiology |
| Volume | 113 |
| Issue number | 2 |
| DOIs | |
| State | Published - Aug 2010 |
ASJC Scopus subject areas
- Anesthesiology and Pain Medicine
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In: Anesthesiology, Vol. 113, No. 2, 08.2010, p. 327-342.
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TY - JOUR
T1 - Perioperative hypothermia (33°C) does not increase the occurrence of cardiovascular events in patients undergoing cerebral aneurysm surgery
T2 - Findings from the intraoperative hypothermia for aneurysm surgery trial
AU - Nguyen, Hoang P.
AU - Zaroff, Jonathan G.
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AU - Todd, M.
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N1 - Funding Information: Supported by grant RO1 NS38554 from the National Institute of Neurological Disease and Stroke, Bethesda, Maryland (to Dr. Todd) and by the Department of Anesthesia, The University of Iowa Roy J. and Lucille A. Carver College of Medicine, Iowa City, Iowa. Portions of this work were presented at the 30th International Stroke Conference, New Orleans, Louisiana, February 2–4, 2005, and published in abstract form (Zaroff J, Hindman BJ, Fisher LA, Short T, Greif R, Spinka R, Myles P, Lawton MT, Litt L, Maktabi MA, Samra S, Thompson BG, Lam A, Craen R, Novick T, Gelb AW: Intraoperative hypothermia and the risk of cardiac injury and dysfunction in patients with subarachnoid hemorrhage (abstract). Stroke 2005; 36:463).
PY - 2010/8
Y1 - 2010/8
N2 - Background: Perioperative hypothermia has been reported to increase the occurrence of cardiovascular complications. By increasing the activity of sympathetic nervous system, perioperative hypothermia also has the potential to increase cardiac injury and dysfunction associated with subarachnoid hemorrhage. Methods: The Intraoperative Hypothermia for Aneurysm Surgery Trial randomized patients undergoing cerebral aneurysm surgery to intraoperative hypothermia (n = 499, 33.3° ± 0.8°C) or normothermia (n = 501, 36.7° ± 0.5°C). Cardiovascular events (hypotension, arrhythmias, vasopressor use, myocardial infarction, and others) were prospectively followed until 3-month follow-up and were compared in hypothermic and normothermic patients. A subset of 62 patients (hypothermia, n = 33; normothermia, n = 29) also had preoperative and postoperative (within 24 h) measurement of cardiac troponin-I and echocardiography to explore the association between perioperative hypothermia and subarachnoid hemorrhage-associated myocardial injury and left ventricular function. Results: There was no difference between hypothermic and normothermic patients in the occurrence of any single cardiovascular event or in composite cardiovascular events. There was no difference in mortality (6%) between groups, and there was only a single primary cardiovascular death (normothermia). There was no difference between hypothermic and normothermic patients in postoperative versus preoperative left ventricular regional wall motion or ejection fraction. Compared with preoperative values, hypothermic patients had no postoperative increase in cardiac troponin-I (median change 0.00 μg/l), whereas normothermic patients had a small postoperative increase (median change + 0.01 μg/l, P = 0.038). Conclusion: In patients undergoing cerebral aneurysm surgery, perioperative hypothermia was not associated with an increased occurrence of cardiovascular events.
AB - Background: Perioperative hypothermia has been reported to increase the occurrence of cardiovascular complications. By increasing the activity of sympathetic nervous system, perioperative hypothermia also has the potential to increase cardiac injury and dysfunction associated with subarachnoid hemorrhage. Methods: The Intraoperative Hypothermia for Aneurysm Surgery Trial randomized patients undergoing cerebral aneurysm surgery to intraoperative hypothermia (n = 499, 33.3° ± 0.8°C) or normothermia (n = 501, 36.7° ± 0.5°C). Cardiovascular events (hypotension, arrhythmias, vasopressor use, myocardial infarction, and others) were prospectively followed until 3-month follow-up and were compared in hypothermic and normothermic patients. A subset of 62 patients (hypothermia, n = 33; normothermia, n = 29) also had preoperative and postoperative (within 24 h) measurement of cardiac troponin-I and echocardiography to explore the association between perioperative hypothermia and subarachnoid hemorrhage-associated myocardial injury and left ventricular function. Results: There was no difference between hypothermic and normothermic patients in the occurrence of any single cardiovascular event or in composite cardiovascular events. There was no difference in mortality (6%) between groups, and there was only a single primary cardiovascular death (normothermia). There was no difference between hypothermic and normothermic patients in postoperative versus preoperative left ventricular regional wall motion or ejection fraction. Compared with preoperative values, hypothermic patients had no postoperative increase in cardiac troponin-I (median change 0.00 μg/l), whereas normothermic patients had a small postoperative increase (median change + 0.01 μg/l, P = 0.038). Conclusion: In patients undergoing cerebral aneurysm surgery, perioperative hypothermia was not associated with an increased occurrence of cardiovascular events.
UR - http://www.scopus.com/inward/record.url?scp=77955177076&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=77955177076&partnerID=8YFLogxK
U2 - 10.1097/ALN.0b013e3181dfd4f7
DO - 10.1097/ALN.0b013e3181dfd4f7
M3 - Article
C2 - 20571361
AN - SCOPUS:77955177076
SN - 0003-3022
VL - 113
SP - 327
EP - 342
JO - Anesthesiology
JF - Anesthesiology
IS - 2
ER -