George A. Robitaille; John H. Phillips, M.D., F.A.C.P.; Robert G. Sumner, M.D.; Thomas G. Higgins
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During the course of interpreting 1,000 consecutive electrocardiograms, interesting changes in cardiac rhythms were observed in leads III and AVF obtained during the act of deep inspiration.
Among the phenomena observed were the production of: sinus arrest, sinus bradycardia, shifting atrial pacemaker, premature atrial and ventricular systoles, paroxysmal atrial tachycardia, first and second degree atrioventricular block, and ventricular tachycardia. In addition, the ability of this maneuver to abolish premature atrial and ventricular systoles, ventricular tachycardia and the pre-excitation of Wolff-Parkinson-White syndrome was also observed.
The use of electrocardiographic leads taken during inspiration has long been advocated to aid in evaluation
Robitaille GA, Phillips JH, Sumner RG, et al. The Value of Inspiratory Leads in Electrocardiographic Diagnosis.. Ann Intern Med. 1966;64:1158. doi: https://doi.org/10.7326/0003-4819-64-5-1158_3
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Published: Ann Intern Med. 1966;64(5):1158.
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