Key result
Spectral analysis of heart rate variability showed that the LF-HF ratio was significantly higher since early pregnancy in women who developed pregnancy-induced hypertension (p < 0.01).
Why the study?
Does spectral analysis of heart rate variability (specifically the LF-HF ratio) in early pregnancy predict the development of pregnancy-induced hypertension?
Observational
Does spectral analysis of heart rate variability (specifically the LF-HF ratio) in early pregnancy predict the development of pregnancy-induced hypertension?
p-value: p=< 0.01
An elevated LF-HF ratio derived from spectral analysis of heart rate variability in early pregnancy may serve as a predictive marker for the development of pregnancy-induced hypertension.
Spectral HRV analysis may aid early PIH prediction in high-risk pregnancies; hypothesis-generating and requires prospective validation before clinical adoption.
The early prediction of pregnancy-induced hypertension (PIH), a common morbid disorder of pregnancy is unsatisfactory. Therefore, in the present study we have investigated the role of spectral analysis of heart rate variability (HRV) in the early prediction of PIH. Spectral analysis of HRV was performed in three groups of subjects (Group I: normal pregnant women; Group II: pregnant women with risk factors, but did not develop PIH; Group III: pregnant women with risk factors and developed PIH). It was observed that the LF-HF ratio, the most sensitive indicator of sympathovagal balance, was significantly high (p < 0.01) since early pregnancy in group III compared to other groups, which was significantly correlated with heart rate and blood pressure. It was suggested that the predictive knowledge of sympathovagal imbalance should be utilized in designing the prevention and management of PIH.
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Pal et al. (2009) conducted an observational in Pregnancy-induced hypertension (PIH). Spectral analysis of heart rate variability (LF-HF ratio) vs. Normal pregnant women and pregnant women with risk factors who did not develop PIH was evaluated on LF-HF ratio (sympathovagal balance) (p=< 0.01). Spectral analysis of heart rate variability showed that the LF-HF ratio was significantly higher since early pregnancy in women who developed pregnancy-induced hypertension (p < 0.01).
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