Cardiovascular Complications of Carotid Endarterectomy under Regional Anaesthesia Technique:
a Comparison of Cervical Plexus Block and Cervical Epidural Anaesthesia
Michálek P.1, Stern M.1, Šoupal J.1, Kubricht V.1, Švec M.1, Šebesta P.2, Šedivý P.2,Adamec M.3, Tošenovský P.3, Janoušek L.3
1Úsek kardiovaskulární anestezie a intenzivní péče ARO, Nemocnice Na Homolce, Praha, primář MUDr.M. Ročeň 2Oddělení cévní a rekonstrukční chirurgie, Nemocnice Na Homolce, Praha, primář MUDr. P. Šebesta, CSc. 3Klinika transplantační chirurgie, Institut klinické a experimentální medicíny, přednosta prof. MUDr. M. Ryska, CSc. |
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Summary:
Objective: The aim of this retrospective study was to evaluate a haemodynamic profile of the patients during carotid
endarterectomy under regional anaesthesia technique and to compare the perioperative cardiovascular stability and
complication rate of cervical plexus block (CPB) and cervical epidural anaesthesia (CEA).
Design: Retrospective clinical study.
Setting: Department of Cardiovascular Anaesthesia and Intensive Care, Na Homolce Hospital, Prague, Czech Republic,
Department of Transplant Surgery, IKEM, Prague, Czech Republic.
Material and Methods: A total of 529 carotid artery endarterectomies performed under regional anaesthesia in 1998–2003
period were included into this retrospective study. A total of 313 procedures were performed using cervical plexus block,
while cervical epidural anaesthesia was used in 216 operations. The evaluated parameters included the systolic, diastolic
and mean arterial pressures, heart rate before, during and after the procedure. The circulatory complications, including
chest pain, ST segment depression and acute myocardial infarction in the perioperative period were also evaluated. The
obtained data were analyzed statistically using chi-square test.
Results: Hypertension requiring a pharmacological intervention was noted in 181 patients in a CPB group (57.8%) and in
25 patients in a CEA group (11.6%) respectively; P < 0.001. Hypotension and/or bradycardia were recorded in 30 patients
in a CPB group (9.6%) and in 41 patients in a CEA group (18.9%). Life threatening dysrhytmias were noted in 16 cases (3.0%)
(14 cases in a CPB group, 2 cases in a CEA group) (P < 0.05). An acute myocardial infarction complicated the perioperative
course in 6 CPB/1 CEA (1.9% vs. 0.5%). Total intraoperative mortality in the cohort was 6 patients (1.1%, 5 CPB/1 CEA). 4
deaths were related to intraoperative stroke, 1 death (the patient in a CPB group) because of the myocardial infarction with
subsequent heart failure, 1 patient died on a respiratory failure following to bronchopneumonia.
Conclusion: Both techniques of regional anaesthesia are reliable for carotid artery surgery. A cervical plexus block is
associated with higher rates of cardiovascular complications related mainly to hypertension and the risk of perioperativemyocardial ischemia.We recommend to use cervical epidural anaesthesia in patients with a serious cardiac history, mainly
because of its ability to block the stress response and its coronary dilating effect.
Key words:
carotid endarterectomy – cervical plexus block – cevical epidural anaesthesia – haemodynamic status –
perioperative myocardial ischaemia
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