Atrial Latency in a Dual Chambered Pacing System Causing Inappropriate Sequence of Cardiac Chamber Activation

S.C.D. Grant; Deborah H. Bennett

doi:10.1111/j.1540-8159.1992.tb02907.x

January 1, 1992Pacing and Clinical Electrophysiology

Atrial Latency in a Dual Chambered Pacing System Causing Inappropriate Sequence of Cardiac Chamber Activation

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Key Points

This report addresses the issue of atrial latency causing abnormal cardiac chamber activation in a patient with a dual chamber pacemaker.
Transvenous atrioventricular pacemaker was implanted in a patient with junctional bradycardia and recurrent ventricular tachycardia after surgery.
Timing of atrial stimulus delivery and resulting atrial excitation were measured.
Pacemaker was reprogrammed to an atrial inhibited mode to correct the issue.
Atrial stimulus to excitation delay was prolonged by up to 0.22 seconds.
Ventricular stimulation occurred before atrial excitation, leading to cardiac failure.
Reprogramming the pacemaker resolved the activation timing issue and restored normal function.

Structured PICO

P

Population

1 patient with junctional bradycardia and recurrent ventricular tachycardia after coronary artery bypass surgery

I

Intervention

Transvenous atrioventricular pacemaker implantation

O

Outcome

Cardiac chamber activation sequence and cardiac failure

Prolonged atrial latency in dual-chamber pacemakers can cause inappropriate AV activation sequences leading to cardiac failure, which can be resolved by reprogramming.

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Implication

Clinicians should assess atrial latency in unexplained dual-chamber pacemaker failure; this case report leaves open prevalence and management guidelines.

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Cite This Study

Grant et al. (1992) studied this question.

synapsesocial.com/papers/6a20eeb95496711a5f2ab308 https://doi.org/10.1111/j.1540-8159.1992.tb02907.x

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Atrial Latency in a Dual Chambered Pacing System Causing Inappropriate Sequence of Cardiac Chamber Activation

Key Points

Structured PICO

Ask about this paper

Implication

Abstract

Discussion

Cite This Study

Atrial Latency in a Dual Chambered Pacing System Causing Inappropriate Sequence of Cardiac Chamber Activation

Key Points

Structured PICO

Ask about this paper

Implication

Abstract

Discussion

Cite This Study

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