Bradycardia During Laparoscopic Surgeries: A Retrospective Cohort Study

Area of Science:

• Anesthesiology
• Cardiology
• Surgical Critical Care

Background:

• Bradycardia during laparoscopy is a potential indicator of cardiac arrest.
• Limited knowledge exists regarding the frequency and consequences of bradycardia during laparoscopic procedures.

Purpose of the Study:

• To determine the frequency of intraoperative bradycardia during laparoscopic surgery.
• To investigate the clinical consequences and risk factors associated with bradycardia in this setting.

Main Methods:

• A retrospective analysis of 9915 patients undergoing laparoscopic surgery.
• Screening for intraoperative bradycardia (heart rate <50 beats/min) using a computerized database.
• Identification of patient demographics, comorbidities, medications, and intraoperative events associated with bradycardia.

Main Results:

• Bradycardia occurred in 15.5% of patients, with heart rates often dropping below 45 beats/min.
• Risk factors included male sex, older age, smoking, comorbidities, and use of beta-blockers, alpha-blockers, and calcium channel blockers.
• Common triggers were CO2 insufflation and opioid administration; 87% experienced associated blood pressure drops.
• Despite its prevalence, bradycardia did not increase cardiac arrest, ICU admission, or mortality rates.

Conclusions:

• Intraoperative bradycardia is a frequent occurrence during laparoscopy.
• While common in older and comorbid patients, it generally does not significantly impact patient outcomes.
• Routine preventive measures are not necessary; instead, focus on vigilant monitoring and prompt management of associated hemodynamic changes.