TY - JOUR
T1 - Systolic and diastolic pacemaker induced repetitive firing in the human heart. Analysis of 23 cases
AU - Lemberg, Louis
AU - Castellanos, Agustin
AU - Arcebal, Azucena G.
AU - Berkovits, Barouh V.
AU - Hernandez-Pierretti, Otto
N1 - Funding Information:
Supported in part by a grant from the Florida Heart Association..
PY - 1969/10
Y1 - 1969/10
N2 - Twenty-three tracings obtained from patients showing pacemaker-induced repetitive firing were reviewed. This complication was manifested as single extra beats, ventricular tachycardia and ventricular fibrillation. Cases in which a definite relation between pacemaker stimuli and multiple responses could not be established were excluded from this series. Systolic repetition was observed in 17 patients. This phenomenon, which was attributed to ventricular vulnerability occurred during chronic block (12 cases) as well as during acute myocardial infarction (5 cases). There were 5 instances of diastolic repetitive firing in patients with digitalis intoxication and recent myocardial infarction. It was postulated that a Wedensky-effect best explained the genesis of diastolic repetition. Knowledge regarding the types and possible mechanisms of the different types of repetitive firing can be applied for the safer use of continuous, demand and ventriculo-synchronized pacemakers.
AB - Twenty-three tracings obtained from patients showing pacemaker-induced repetitive firing were reviewed. This complication was manifested as single extra beats, ventricular tachycardia and ventricular fibrillation. Cases in which a definite relation between pacemaker stimuli and multiple responses could not be established were excluded from this series. Systolic repetition was observed in 17 patients. This phenomenon, which was attributed to ventricular vulnerability occurred during chronic block (12 cases) as well as during acute myocardial infarction (5 cases). There were 5 instances of diastolic repetitive firing in patients with digitalis intoxication and recent myocardial infarction. It was postulated that a Wedensky-effect best explained the genesis of diastolic repetition. Knowledge regarding the types and possible mechanisms of the different types of repetitive firing can be applied for the safer use of continuous, demand and ventriculo-synchronized pacemakers.
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U2 - 10.1016/S0022-0736(69)80005-1
DO - 10.1016/S0022-0736(69)80005-1
M3 - Article
C2 - 4191908
AN - SCOPUS:0014593049
VL - 2
SP - 353
EP - 362
JO - Journal of Electrocardiology
JF - Journal of Electrocardiology
SN - 0022-0736
IS - 4
ER -