[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.
Servicio de Cardiología, Hospital Universitario Virgen del Rocío, Sevilla.
F J
FJ
Morales Ponce
F
F
López Pardo
M M
MM
Méndez Cortegano
A
A
Revello Bustos
G
G
Barón Esquivias
A
A
Pedrote Martínez
F
F
Errazquin Sáenz de Tejada
J
J
Burgos Cornejo
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