Unusual Sinus Node Response Curves in Two Cardiac Transplant Recipients
- 1 March 1986
- journal article
- case report
- Published by Wiley in Pacing and Clinical Electrophysiology
- Vol. 9 (2) , 223-230
- https://doi.org/10.1111/j.1540-8159.1986.tb05396.x
Abstract
We describe unusual responses of the sinus node to programmed atrial stimulation in two asymptomatic cardiac transplant recipients. In one patient the sinoatrial conduction time, calculated using the revised method of Strauss, is extremely short (5 ms), and in the other it is extremely long (460 ms). The various mechanisms that might be involved in these atypical responses to atrial extrastimulation are discussed. These include sinus node suppression, shift of pacemaker, direct stimulation of the sinus node and shortening of the sinus node action potential duration.Keywords
This publication has 29 references indexed in Scilit:
- Electrophysiologic effects on combined autonomic blockade in patients with sinus node disease.Circulation, 1981
- The estimation of sinoatrial conduction time in rabbit heart by the constant atrial pacing technique.Circulation, 1979
- Studies on the mechanism of sinus node dysfunction in the sick sinus syndrome.Circulation, 1978
- Sinoatrial pacemaker shift following atrial stimulation in man.Circulation, 1977
- The effect of premature atrial depolarization on sinus node automaticity in man.Circulation, 1976
- Electrophysiologic evaluation of sinus node function in patients with sinus node dysfunction.Circulation, 1976
- The Relationship Between Sinoatrial Conduction Time and Sinus Cycle Length During Spontaneous Sinus Arrhythmia in AdultsCirculation, 1974
- Premature Atrial Stimulation as a Key to the Understanding of Sinoatrial Conduction in ManCirculation, 1973
- Significance of the Sinus-Node Recovery TimeCirculation, 1972
- Evaluation of Sino-atrial Node Function in Man by Overdrive SuppressionCirculation, 1971