Abstract
Pacemaker capture during the supernormal period was seen in a case of modulated parasystole where ectopic cycles occurred without any interposed nonparasystolic beat. This contrasts with previous clinical reports, since, in the latter, the parasystolic cycle length could not be measured directly. As in experimental studies, supernormal modulation resulted in a triphasic phase response curve. Although less likely, similar electrocardiographic changes could be produced by a conceptually different phenomenon, namely full parasystolic resetting due to loss of protection occurring exclusively early in the cycle combined with modulation in the other (late) parts of the cycle.
| Original language | English |
|---|---|
| Pages (from-to) | 293-296 |
| Number of pages | 4 |
| Journal | Journal of Electrocardiology |
| Volume | 22 |
| Issue number | 4 |
| DOIs | |
| State | Published - Jan 1 1989 |
Fingerprint
Keywords
- Holter recordings
- parasystolic modulation
- supernormalperiod
- ventricular parasystole
ASJC Scopus subject areas
- Cardiology and Cardiovascular Medicine
Cite this
Effects of supernormal capture on directly measured nonmodulated parasystolic cycles. / Castellanos, Agustin; De La Hera, Aristides; Luceri, Richard M.; Mendoza, Ivan J.; Myerburg, Robert J.
In: Journal of Electrocardiology, Vol. 22, No. 4, 01.01.1989, p. 293-296.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effects of supernormal capture on directly measured nonmodulated parasystolic cycles
AU - Castellanos, Agustin
AU - De La Hera, Aristides
AU - Luceri, Richard M.
AU - Mendoza, Ivan J.
AU - Myerburg, Robert J
PY - 1989/1/1
Y1 - 1989/1/1
N2 - Pacemaker capture during the supernormal period was seen in a case of modulated parasystole where ectopic cycles occurred without any interposed nonparasystolic beat. This contrasts with previous clinical reports, since, in the latter, the parasystolic cycle length could not be measured directly. As in experimental studies, supernormal modulation resulted in a triphasic phase response curve. Although less likely, similar electrocardiographic changes could be produced by a conceptually different phenomenon, namely full parasystolic resetting due to loss of protection occurring exclusively early in the cycle combined with modulation in the other (late) parts of the cycle.
AB - Pacemaker capture during the supernormal period was seen in a case of modulated parasystole where ectopic cycles occurred without any interposed nonparasystolic beat. This contrasts with previous clinical reports, since, in the latter, the parasystolic cycle length could not be measured directly. As in experimental studies, supernormal modulation resulted in a triphasic phase response curve. Although less likely, similar electrocardiographic changes could be produced by a conceptually different phenomenon, namely full parasystolic resetting due to loss of protection occurring exclusively early in the cycle combined with modulation in the other (late) parts of the cycle.
KW - Holter recordings
KW - parasystolic modulation
KW - supernormalperiod
KW - ventricular parasystole
UR - http://www.scopus.com/inward/record.url?scp=0024417329&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0024417329&partnerID=8YFLogxK
U2 - 10.1016/0022-0736(89)90003-4
DO - 10.1016/0022-0736(89)90003-4
M3 - Article
C2 - 2794830
AN - SCOPUS:0024417329
VL - 22
SP - 293
EP - 296
JO - Journal of Electrocardiology
JF - Journal of Electrocardiology
SN - 0022-0736
IS - 4
ER -