[Advanced auriculoventricular block of atypical presentation after acute myocardial infarct in sleep apnea syndrome].
We report a case of an adult male in whom, one week after an anterior acute myocardial infarction, we documented nocturnal episodes of type II second degree atrio-ventricular heart block, including advanced heart block episodes (4:1). An electrophysiologic study did not show atrio-ventricular conduction abnormalities, so we suspected a possible sleep apnea syndrome, which was confirmed with a polysomnographic study. It was observed that advanced heart block episodes were preceded by significant decreases in arterial oxygen saturation. These episodes disappeared with continuous positive air pressure ventilation.
Morales Ponce
F J
FJ
Servicio de Cardiología, Hospital Universitario Virgen del Rocío, Sevilla.
López Pardo
F
F
Méndez Cortegano
M M
MM
Revello Bustos
A
A
Barón Esquivias
G
G
Pedrote Martínez
A
A
Errazquin Sáenz de Tejada
F
F
Burgos Cornejo
J
J
D006327:Heart Block / Q000209:etiology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000150:complications*; D011175:Positive-Pressure Respiration; D012891:Sleep Apnea Syndromes / Q000150:complications* / Q000175:diagnosis / Q000628:therapy