Exercise-induced ventricular arrhythmia occurred in 7% of patients with sleep disorders and was associated with lower minimal oxygen saturation during exercise (92.75 vs 95.50, p=0.01).
Case-Control (n=312)
No
What are the predictive factors for exercise-induced ventricular arrhythmias in patients with sleep disorders?
In patients with sleep disorders, exercise-induced ventricular arrhythmias occur in approximately 7% of individuals and are significantly associated with lower oxygen saturation during exercise.
Absolute Event Rate: 92.75% vs 95.5%
p-value: p=0.01
OBJECTIVE: To assess the prevalence of ventricular arrhythmias induced by exercise in a population with sleep disorders and to analyze the triggering factors. METHODS: Patients were consecutively selected from the database of the Sleep Clinic of Universidade Federal de São Paulo. All subjects were submitted to basal polysomnography, blood sample collection, physical examination, 12-lead ECG, spirometry, cardiorespiratory exercise study on a treadmill, and echocardiogram. The Control Group was matched for age and gender. RESULTS: A total of 312 patients were analyzed. Exercise-induced ventricular arrhythmia was observed in 7%. The aortic diameter was larger (3.44 ± 0.30, 3.16 ± 0.36, p = 0.04) and the minimal saturation was lower (92.75 ± 3.05, 95.50 ± 1.73, p=0.01) in the ventricular arrhythmia group when compared to controls, respectively. After correction of the aortic root to body surface, there was only a trend to a larger diameter being associated with the emergence of arrhythmia. CONCLUSIONS: Exercise-induced ventricular arrhythmia was observed in 7% of sample and it was associated with lower oxygen saturation during exercise.
Cintra et al. (Mon,) conducted a case-control in sleep disorders (n=312). Exercise-induced ventricular arrhythmia vs. Matched controls without exercise-induced ventricular arrhythmia was evaluated on Minimal oxygen saturation during exercise (p=0.01). Exercise-induced ventricular arrhythmia occurred in 7% of patients with sleep disorders and was associated with lower minimal oxygen saturation during exercise (92.75 vs 95.50, p=0.01).