摘要
Fetal complete atrioventricular bl ock(AVB)occurs in 2-5%of Sjgren’s antibodies(SSA /SSB)-positive preg-nancies with substantialmorbidity andmortality.We evalu-ated the incidence of 1°and 2°AVB by m easuring Doppler -derived mechanical PR inte rvals.We compared mechanical PR intervals of fetuses o f SSA /SSB positive mothers referred to a single cardiology center between 1997and 2003with control fetuses and fetuses with 1°or 2°AVB confirmed by magnetocardiography o r postnatal electrocar-diogram.One hundred thirty -nine fe tal echocardiograms performed on 59SSA /SSB -positive pr egnant women at24.3±5.0weeks gestation were compared with 150controls.Mechanical PR intervals o f the study group(120.5±9.8milliseconds)and controls(120.6±8.7milliseconds)were the same but differed significa ntly fromfetuses with 1°and 2°AVB(191.5±29.6msec).The in-cidence of 1°and°2fetal AVB in SSA /S SB -positive pregnancies is low and can be identif ied by abnormal me-chanical PR interval.
Fetal complete atrioventricular bl ock(AVB)occurs in 2-5%of Sjgren's antibodies(SSA /SSB)-positive preg-nancies with substantialmorbidity andmortality.We evalu-ated the incidence of 1°and 2°AVB by m easuring Doppler -derived mechanical PR inte rvals.We compared mechanical PR intervals of fetuses o f SSA /SSB positive mothers referred to a single cardiology center between 1997and 2003with control fetuses and fetuses with 1°or 2°AVB confirmed by magnetocardiography o r postnatal electrocar-diogram.One hundred thirty -nine fe tal echocardiograms performed on 59SSA /SSB -positive pr egnant women at24.3±5.0weeks gestation were compared with 150controls.Mechanical PR intervals o f the study group(120.5±9.8milliseconds)and controls(120.6±8.7milliseconds)were the same but differed significa ntly fromfetuses with 1°and 2°AVB(191.5±29.6msec).The in-cidence of 1°and°2fetal AVB in SSA /S SB -positive pregnancies is low and can be identif ied by abnormal me-chanical PR interval.
