Advanced ventricular arrhythmias during bedside pulmonary artery catheterization

Area of Science:

• Critical Care Medicine
• Cardiology
• Clinical Electrophysiology

Background:

• Pulmonary artery catheterization (PAC) is a common invasive procedure in critically ill patients.
• The incidence of advanced arrhythmias and new-onset right bundle branch block (RBBB) during PAC is not well-established.
• Understanding these risks is crucial for patient safety and procedural management.

Purpose of the Study:

• To prospectively determine the incidence of advanced arrhythmias and acute right bundle branch block during bedside pulmonary artery catheterization.
• To identify factors associated with an increased risk of these complications.

Main Methods:

• 119 critically ill patients undergoing 150 PACs were studied.
• Continuous electrocardiographic monitoring with permanent recordings was utilized.
• Patients were assessed for advanced ventricular arrhythmias and new-onset RBBB.

Main Results:

• Advanced ventricular arrhythmias occurred in 53% of catheterizations, including ventricular salvos (30%), nonsustained ventricular tachycardia (20%), and sustained ventricular tachycardia (3%).
• Ventricular fibrillation occurred in two patients, requiring intervention in three.
• New right bundle branch block developed in 5% of patients, persisting for a mean of 9.5 hours.
• Arrhythmia incidence correlated with predisposing risk factors (p<0.05) and prolonged catheterization time (p<0.01).

Conclusions:

• Bedside pulmonary artery catheterization is associated with a high incidence of advanced ventricular arrhythmias.
• Acute right bundle branch block is a notable complication.
• Predisposing risk factors and prolonged procedure duration are significant risk factors for arrhythmias.