Analysis of Association of Brain Natriuretic Peptide Levels and Blood Pressure Variability
Mohammed Nachid *
Cardiology Division , Ibn Rochd University Hospital , Casablanca 20250, Morocco.
Ismail Benhar
Cardiology Division , Ibn Rochd University Hospital , Casablanca 20250, Morocco.
Karim Mounaouir
Cardiology Division , Ibn Rochd University Hospital , Casablanca 20250, Morocco.
Ali El-Jazouli
Cardiology Division , Ibn Rochd University Hospital , Casablanca 20250, Morocco.
Bennouna Ghali
Cardiology Division , Ibn Rochd University Hospital , Casablanca 20250, Morocco.
Arous Salim
Cardiology Division , Ibn Rochd University Hospital , Casablanca 20250, Morocco.
Abdenasser Drighil
Cardiology Division , Ibn Rochd University Hospital , Casablanca 20250, Morocco.
Rachida Habbal
Cardiology Division , Ibn Rochd University Hospital , Casablanca 20250, Morocco.
*Author to whom correspondence should be addressed.
Abstract
Objective: The present study aimed to investigate the relationship between brain natriuretic peptide (BNP) levels and blood pressure variability among hypertensive patients aged over 40 years.
Methods: The study recruited 120 patients from a cardiology outpatient clinic who had been diagnosed with hypertension and taking antihypertensive medication for at least 6 months. Demographic and clinical information, blood pressure measurements, and blood samples were collected to measure BNP levels. The standard deviation of the mean arterial pressure over 24 hours was calculated as a measure of blood pressure variability. Linear regression was used to examine the association between BNP levels and blood pressure variability while controlling for age, sex, BMI, and medication history.
Results: The study found a significant positive association between BNP levels and blood pressure variability (β=0.31, p=0.002), even after controlling for other variables. The linear regression model explained 20% of the variance in blood pressure variability (R2=0.20, F=9.52, p<0.001).
Conclusion: The findings suggest that higher BNP levels are associated with increased blood pressure variability among hypertensive patients. Further studies are needed to explore the underlying mechanisms and the potential implications of this association.
Keywords: Brain natriuretic peptide, blood pressure variability, hypertension, antihypertensive medication, linear regression