Progressive improvement of His-Purkinje conduction during recovery from catheter-induced heart block

Methodologic problems in the use of atrial pacing studies for the assessment of A–V conduction

“…It is accepted that conduction disorders such as right bundle branch block (Simonson, 1951) or complete A-V block (Gupta and Haft, 1972;Stein et al .. 1966) may occur during cardiac catheterization. Similar problems may also occur during intracardiac electrophysiologic studies (Akhtar et al .. 1977;Jacobson and Scheinmann, 1974;Levites et al .. 1976). In addition, mechanical stimulation of the atria or ventricles may cause ectopic beats (Akhtar et al .. 1977).…”

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“…Similar problems may also occur during intracardiac electrophysiologic studies (Akhtar et al .. 1977;Jacobson and Scheinmann, 1974;Levites et al .. 1976). In addition, mechanical stimulation of the atria or ventricles may cause ectopic beats (Akhtar et al .. 1977).…”