Why the study?
What are the haemodynamic effects of atrial pacing in patients with ischaemic heart disease?
What are the haemodynamic effects of atrial pacing in patients with ischaemic heart disease?
Atrial pacing is haemodynamically safe at clinical rates in patients with ischaemic heart disease and is preferable to ventricular pacing because it preserves atrial transport.
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May support atrial pacing safety at clinical rates in ischaemic heart disease; hypothesis-generating and requires randomized confirmation versus ventricular pacing.
The haemodynamic effects of atrial pacing in 49 patients with ischaemic heart disease are described. The chief effect is a progressive reduction in stroke volume. Systemic pressure is unchanged but filling pressures first fall and then rise at the faster pacing rates. Cardiac output also falls at faster rates. It is concluded that atrial pacing has no deleterious effects in the range of rates that is used clinically to control bradycardia without atrio‐ventricular block, or to treat arrhythmias. It is preferable to ventricular pacing because it retains atrial transport.
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Balcon et al. (1970) studied this question.
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