Related Experiment Videos
Hemodynamic effects of propofol: data from over 25,000 patients
C C Hug1, C H McLeskey, M L Nahrwold
1Department of Anesthesiology, Emory University School of Medicine, Atlanta, Georgia.
Anesthesia and Analgesia
|October 1, 1993
Summary
Propofol anesthesia can cause hypotension and bradycardia, especially within 10 minutes of induction. However, these hemodynamic changes are generally manageable and predictable, even for less experienced anesthesiologists.
Area of Science:
- Anesthesiology
- Pharmacology
- Cardiovascular Medicine
Background:
- Propofol is a widely used anesthetic agent.
- Understanding its hemodynamic effects, particularly hypotension and bradycardia, is crucial for patient safety.
Purpose of the Study:
- To investigate the incidence and characteristics of clinically significant hypotension and bradycardia following propofol induction.
- To identify patient and procedural factors associated with these adverse events.
Main Methods:
- A large-scale, Phase IV, stepwise study involving 25,981 patients across 1722 institutions.
- Data collected on demographic, perioperative, and outcome variables for patients aged 18-80, ASA physical status I-III.
Main Results:
- Hypotension (SBP < 90 mm Hg) occurred in 15.7% of patients, primarily within 10 minutes of propofol induction.
- Bradycardia (HR < 50 bpm) occurred in 4.8% of patients, with 42% in the first 10 minutes.
- Hypotension was more common in the elderly, females, Caucasians, and with combined use of opioids or beta-blockers. Bradycardia was associated with opioids and beta-blockers. Concomitant hypotension and bradycardia were rare (1.3%).
Conclusions:
- Adverse hemodynamic changes associated with propofol are generally transient, predictable, and manageable.
- Even inexperienced anesthesiologists using propofol according to protocol experienced few adverse events.
- Knowledge of propofol's pharmacology aids in managing potential cardiovascular changes and drug interactions.