In hypertensive patients with OSAS, the prevalence of non-dipping and reverse dipping blood pressure patterns was high and significantly associated with a history of hypertension (p<0.05).
Cross-Sectional (n=70)
No
In hypertensive patients with OSAS in Angola, there is a high prevalence of abnormal nocturnal blood pressure patterns (non-dipping and reverse dipping).
p-value: p=<0.05
The main cardiovascular consequence of Obstructive Sleep Apnea Syndrome (OSAS) is arterial hypertension (AH), considered since 2003 a second cause of AH. This study aimed to evaluate nocturnal blood pressure patterns (BPP) in hypertensive patients with OSAS in Angola. A descriptive, cross-sectional observational study was carried out in a private clinic in Angola. Demographic and clinical variables, polysomnography, and ABPM parameters were included. Patients were classified as a dippers, non-dippers, and reverse dippers. One-way ANOVA test, Kruskal-Walli’s test, and chi-square test were used as appropriate. The sample consisted of 70 individuals: 39(55.7%) were male. The mean age was 53.63±9.14 years and the BMI was 35.82 ± 6.57 kg/m2. An association between patients with a past medical history of hypertension and BPP was found (p<0.05). Mean O2 saturation was significantly lower in the reverse dippers (p=0.25). Although insignificantly, the dippers were younger and less obese. In contrast, the proportion of smokers and diabetics was higher in the reverse dippers. No correlation was found between the apnea-hypopnea index, the mean blood pressure, and the Epworth sleepiness scale. In the present study, the prevalence of non-dipping and reverse dipping patterns was high. It needs to be confirmed with future prospective studies.
Caetano et al. (Tue,) conducted a cross-sectional in Hypertensive patients with Obstructive Sleep Apnea Syndrome (n=70). In hypertensive patients with OSAS, the prevalence of non-dipping and reverse dipping blood pressure patterns was high and significantly associated with a history of hypertension (p<0.05).