Resumption of sinus rhythm from fetal complete atrioventricular block after maternally administered ritodrine.
Reports have indicated that maternal administration of ritodrine increased the ventricular rate and thus ameliorated signs of heart failure in a fetus with complete atrioventricular block (CAVB). A fetus from a mother without the anti-SS-A/SS-B antibody had CAVB, with atrial rate 148-154 bpm and ventricular rate 53-57 bpm. After maternal administration of ritodrine, the ventricular rate increased to 60-65 bpm, and then sinus rhythm resumed. Ritodrine may not only increase the ventricular rate but also induce sinus rhythm in a fetus with CAVB.
Matsubara
Shigeki
S
Takamura
Kazuhiro
K
Kuwata
Tomoyuki
T
Shiraishi
Hirohiko
H
Okuno
Satsuki
S
Suzuki
Mitsuaki
M
D000328:Adult; D001146:Arrhythmia, Sinus / Q000175:diagnosis / Q000188:drug therapy*; D054537:Atrioventricular Block / Q000175:diagnosis / Q000188:drug therapy*; D004452:Echocardiography; D005260:Female; D006321:Heart / Q000187:drug effects / Q000502:physiology; D006340:Heart Rate, Fetal / Q000187:drug effects / Q000502:physiology; D006801:Humans; D007231:Infant, Newborn; D011247:Pregnancy; D012312:Ritodrine / Q000008:administration & dosage / Q000627:therapeutic use*; D013566:Sympathomimetics / Q000627:therapeutic use*; D016896:Treatment Outcome
D013566:Sympathomimetics; D012312:Ritodrine