Hypercapnia During Wakefulness Attenuates Ventricular Ectopy

Ventricular ectopy.

Sir, The proceedings of the British Cardiac Society (Br HeartJ_ 1979; 41: 360-384) include one abstract in which 'ventricular ectopy' is the subject. It was particularly disappointing to see this in the British Heart Journal as I felt quite certain that 'ectopy' was an unfortunate neologism both coined in and confined to the United States of America. Our dictionaries, both medical and general, ...

Aberrant ventricular conduction and ventricular ectopy.

Diuretics, potassium, and ventricular ectopy.

I tion alone accounted for this and whether the reduction would have been greater had the diuretics not caused a ‘‘backlash’’ of cardiotoxicty. Certainly, the introduction of orally available thiazide diuretics in 1957–8 revn November 1985, we reviewed the then current status of experimental and clinical evidence and opinion on diuretic-associated hypokalemia with particular attention to its po...

Radiofrequency Ablation in Frequent Ventricular Ectopy

Ventricular premature beats (VPBs), also referred to as ventricular premature complexes are early depolarization’s of ventricular myocardium arising in a variety of situations. VPCs/NSVT are common and occur in a broad spectrum of the population including patients without structural heart disease and those with any form of cardiac disease, independent of severity [1]. The incidence of VPBs in s...

Comparing the effect of hypercapnia and hypoxia on the electroencephalogram during wakefulness.

OBJECTIVE Hypoxia has been postulated as a key mechanism for neurocognitive impairment in sleep-disordered breathing. However, the effect of hypoxia on the electroencephalogram (EEG) is not clear. METHODS We examined quantitative EEG recordings from 20 normal volunteers under three 5-min ventilatory control protocols: progressive hypercapnia with iso-hyperoxia (pO2=150mmHg) (Protocol 1), prog...