Table 1.
Summary of ECG parameters assessed.
Table 2.
Subject characteristics at time of examination.
Fig 1.
Mean RR and time domain indices of HRV were reduced in the 3rd trimester of uncomplicated pregnancy. Time domain parameters of HRV return to never-pregnant levels by the late postpartum (6–8 months), whereas in PE subjects these variables were reduced compared to never-pregnant and time-matched postpartum controls. PP, postpartum.
Fig 2.
Correlation of heart rate variability parameters to mean RR.
All (A) time domain; SDNN, RMSSD, pNN50 and (B) frequency domain; LF/HF parameters were significantly correlated to corresponding mean RR duration in study subjects.
Fig 3.
Frequency domain indices of HRV.
Frequency domain indices of HRV were not significantly altered by uncomplicated pregnancy. Late postpartum (6–8 months) PE subjects and time-matched controls had significantly increased LF components compared to Never-pregnant controls.
Fig 4.
P-Wave and QRS complex duration.
Uncomplicated pregnancy, was not associated with alterations in P-Wave or QRS duration compared to never-pregnant controls. Late postpartum (6–8 months), PE subjects exhibited increased duration in both P-wave and QRS complexes.