What question did this study set out to answer?

This study aimed to investigate how stimulation of canine cardiac nerves affects heart rate, rhythm, and the location of pacemaker activity.

Effect of canine cardiac nerves on heart rate, rhythm, and pacemaker location

View Full Paper

Ask AI

Bookmark

Population

Open-chest dogs (canine model)

Design

Preclinical

Authors

Does not alter arrhythmia management; leaves open whether autonomic pacemaker shifts translate to human atrial dynamics.

This study aimed to investigate how stimulation of canine cardiac nerves affects heart rate, rhythm, and the location of pacemaker activity.
Open-chest dogs were used to stimulate right- and left-sided cardiac nerves.
Stimulation effects on heart rate and rhythms were recorded, focusing on pacemaker location.
Analysis of induced rhythms was conducted in relation to nerve stimulation.
72% of induced rhythms originated from the atrial pacemaker complex.
10% of stimulations produced an AV nodal rhythm, mainly from specific left-sided nerves.
A shift in pacemaker location occurred with sympathetic stimulation leading cranially and with parasympathetic stimulation leading caudally.

Population

Open-chest dogs (canine model)

Intervention

Stimulation of right- and left-sided cardiac nerves

Outcome

Heart rate, rhythm, and pacemaker locationsurrogate

This study demonstrates the existence of a system of pacemakers controlled by cardiac nerves beyond the sinus and AV nodes in a canine model.

Schuessler et al. (1986) studied this question.

View Full Paper

Ask AI

Bookmark