Abstract
Background: Hypertensive obstructive sleep apnea (OSA) patients are more likely to have nocturnal blood pressure (NBP) abnormalities than hypertensives without it. The establishment of predictors of NBP abnormalities would be of clinical significance.
Aim: To determine the role of anthropometric, glucometabolic and sleep study parameters in the detection of OSA patients with NBP abnormalities.
Materials and Methods: Eighty-seven patients with newly diagnosed OSA and hypertension participated in the study. OSA was verified by a polysomnography. An ambulatory 24-hour BP monitoring was done to discern (NH) - nocturnal hypertensives (NBP >120/70mmHg) from (NN) - nocturnal normotensives.
Results: Risk factors of NH did not differ significantly from those in NN. From all the conventional cardiovascular risk factor parameters only the duration of sleep at SaO2<90% was significantly longer in NH ( p=0.009), as well as, the levels of HbA1C (p=0.024). After adjustment for confounding factors in a multiple regression model only the time of sleep at SaO2<90% remained as an independent predictor. HbA1C levels were of borderline significance.
Conclusion: The time of sleep at SaO2 <90%may be applied for the detection of NBP abnormalities in severe OSA patients.
Keywords: Clinical parameters, nocturnal hypertension, obstructive sleep apnea.
Current Respiratory Medicine Reviews
Title:Nocturnal Blood Pressure Abnormalities in Obstructive Sleep Apnea - Clinical Predictors
Volume: 10 Issue: 3
Author(s): Radostina Vlaeva Cherneva, Ognian Borisov Georgiev, Daniela Stoichkova Petrova, Radoslav Georgiev Biluykov, Emil Ivanov Manov and Julia Ivanova Petrova
Affiliation:
Keywords: Clinical parameters, nocturnal hypertension, obstructive sleep apnea.
Abstract: Background: Hypertensive obstructive sleep apnea (OSA) patients are more likely to have nocturnal blood pressure (NBP) abnormalities than hypertensives without it. The establishment of predictors of NBP abnormalities would be of clinical significance.
Aim: To determine the role of anthropometric, glucometabolic and sleep study parameters in the detection of OSA patients with NBP abnormalities.
Materials and Methods: Eighty-seven patients with newly diagnosed OSA and hypertension participated in the study. OSA was verified by a polysomnography. An ambulatory 24-hour BP monitoring was done to discern (NH) - nocturnal hypertensives (NBP >120/70mmHg) from (NN) - nocturnal normotensives.
Results: Risk factors of NH did not differ significantly from those in NN. From all the conventional cardiovascular risk factor parameters only the duration of sleep at SaO2<90% was significantly longer in NH ( p=0.009), as well as, the levels of HbA1C (p=0.024). After adjustment for confounding factors in a multiple regression model only the time of sleep at SaO2<90% remained as an independent predictor. HbA1C levels were of borderline significance.
Conclusion: The time of sleep at SaO2 <90%may be applied for the detection of NBP abnormalities in severe OSA patients.
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Vlaeva Cherneva Radostina, Borisov Georgiev Ognian, Stoichkova Petrova Daniela, Georgiev Biluykov Radoslav, Ivanov Manov Emil and Ivanova Petrova Julia, Nocturnal Blood Pressure Abnormalities in Obstructive Sleep Apnea - Clinical Predictors, Current Respiratory Medicine Reviews 2014; 10 (3) . https://dx.doi.org/10.2174/1573398X10666141013225046
DOI https://dx.doi.org/10.2174/1573398X10666141013225046 |
Print ISSN 1573-398X |
Publisher Name Bentham Science Publisher |
Online ISSN 1875-6387 |
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