Atrioventricular Conduction Delay in Fetuses Exposed to Anti-SSA/Ro and Anti-SSB/La Antibodies: A Magnetocardiography Study

Table 2

Fetal cardiac time intervals.

Characteristics	Study group; 𝑛=33 measurements; mean ± SD (ms)	Control group; 𝑛=33 measurements; mean ± SD (ms)	Statistical; significance; (𝑡-test)
Fetal heart rate (beats per minute)	135 ± 10	135 ± 10	ns
P wave	53 ± 15	58 ± 13	ns
PQ segment	56 ± 10	49 ± 10	𝑃=0.007
PR interval	109 ± 17	107 ± 15	ns
QRS complex	53 ± 7	52 ± 7	ns
T wave	168 ± 52*	140 ± 28^#	ns
QT interval	261 ± 49*	232 ± 35^#	ns

^*n = 21 measurements, ^#n = 18 measurements.