Atrioventricular Conduction Delay in the Second Trimester Measured by Fetal Magnetocardiography

Table 3

Cardiac time intervals of the study group compared to those of the control group at 27–38 weeks of gestation (𝑃 value is adjusted for gestational age, gender, and weight).

Characteristics	Study group 𝑛=18 measurements mean ± SD (ms)	Control group 𝑛=44 measurements mean ± SD (ms)	Statistical significance (ANCOVA)
P wave	48 ± 10	55 ± 13	ns
PR segment	58 ± 11	51 ± 13	𝑃=0.023
PR interval	106 ± 15	104 ± 20	ns
QRS complex	56 ± 5	57 ± 7	ns
T wave	121 ± 13	128 ± 31^#	ns
QT interval	250 ± 36	250 ± 42^#	ns

^#𝑛=38 measurements due to low identification rate.