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Cardiac rhythm disturbances during fiberoptic bronchoscopy: a prospective study.
The Journal of Thoracic and Cardiovascular Surgery
|April 1, 1979
Summary
Transnasal fiberoptic bronchoscopy (FOB) is associated with a low incidence of major cardiac arrhythmias. Lidocaine anesthesia appears to offer protection against major arrhythmias during FOB procedures.
Area of Science:
- Cardiology
- Pulmonology
- Anesthesiology
Background:
- Cardiac arrhythmias can occur during invasive procedures like transnasal fiberoptic bronchoscopy (FOB).
- The role of local anesthetics, such as lidocaine, in mitigating these arrhythmias during FOB is not fully understood.
Purpose of the Study:
- To evaluate the incidence of cardiac arrhythmias during and after transnasal fiberoptic bronchoscopy (FOB).
- To assess the effect of lidocaine anesthesia on the occurrence of major arrhythmias during FOB.
Main Methods:
- Electrocardiographic monitoring of 26 patients for 12 hours pre-, during, and post-FOB.
- Measurement of arterial lidocaine concentrations and arterial blood gases before and after the procedure.
Main Results:
- The incidence of total arrhythmias (excluding sinus tachycardia) was 69% during the control period and 77% during FOB.
- Major arrhythmias decreased from 8% in the control period to 4% during FOB.
- Peak arterial lidocaine levels averaged 5.0 +/- 0.6 microgram/mL, reached 5-30 minutes post-insertion.
Conclusions:
- The incidence of cardiac arrhythmias, excluding sinus tachycardia, during FOB is low.
- Lidocaine anesthesia likely provides a protective effect against major arrhythmias during FOB.