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Cholecysto-cardiac link
S Haleem1, M M Ansari, T Z Khan
1Department of Anaesthesiology, J.N. Medical College, Aligarh Muslim University.
Insights
Cholecystectomy surgery can cause significant heart rate and blood pressure increases, especially in treated hypertensive patients. Surgeons and anesthesiologists must monitor patients closely due to potential cardiac risks during gallbladder removal.
Area of Science:
- Anesthesiology
- Cardiology
- Surgical Physiology
Background:
- Gallbladder surgery (cholecystectomy) can impact cardiovascular function.
- Hypertension is a common comorbidity affecting surgical outcomes.
- The cholecystocardiac link, involving the sympathetic nervous system, is not fully understood in surgical contexts.
Purpose of the Study:
- To investigate the cardiovascular response to cholecystectomy in normotensive versus treated hypertensive patients.
- To identify potential differences in hemodynamic and electrophysiological changes during gallbladder removal.
- To explore the underlying physiological mechanisms of the cholecystocardiac link.
Main Methods:
- Comparative study involving 30 normotensive (ASA class I) and 30 treated hypertensive (ASA class II) patients undergoing elective cholecystectomy.
- General anesthesia was administered.
- Hemodynamic parameters (heart rate, mean arterial pressure) and cardiac rhythm were monitored throughout the procedure.
Main Results:
- Both groups exhibited significant increases in heart rate and mean arterial pressure (P < 0.05) during gallbladder removal.
- Treated hypertensive patients showed more pronounced cardiovascular alterations compared to normotensive patients.
- Tachyarrhythmias occurred in 33.33% of hypertensive patients.
- All measured parameters returned to baseline levels by the end of surgery.
Conclusions:
- Cholecystectomy induces significant cardiovascular changes, particularly in treated hypertensive individuals.
- The fifth thoracic spinal segment may mediate the observed cholecystocardiac link via sympathetic pathways.
- Anesthetists require heightened vigilance during cholecystectomies, especially in hypertensive patients, to manage potential cardiac complications.
Abstract:
Thirty normotensive patients (ASA class I) and 30 treated hypertensives without any cardiac problem (ASA class II) were subjected to elective cholecystectomy under general anaesthesia. Patients' age ranged from 25-50 yr, and male:female ratio was 1:11. There were significant increases in heart rate and mean arterial pressure in both the groups (P less than 0.05) during surgical manipulations for removal of the diseased gall bladders. The alterations in the treated hypertensive patients were not only much more than in the normotensives, but also were associated with tachyarrhythmias in 33.33 per cent of hypertensive patients. All changes returned to the pre-induction level at the end of the surgery. Mediation through fifth thoracic spinal segment, a common source of sympathetic supply to heart and gallbladder, explained the observed cholecystocardiac link. Anaesthetists therefore need to be vigilant during cholecystectomies.