Pascal Delsart1,2, Jerome Soquet3,4, Elodie Drumez5, Francis Juthier3,4, Seenam Kutoati3, Thomas Nganou Koutouzi3, Stephanie Fry3, Anne Mallart3, David Montaigne3,4, Claire Mounier-Vehier3,4. 1. CHU Lille, Institut Cœur Poumon, Bd Pr Leclercq, F-59000, Lille, France. delsartpascal@yahoo.fr. 2. Vascular Medicine and Hypertension Department, Institut-Coeur-Poumon, Boulevard Pr Leclercq, 59037, Lille Cedex, France. delsartpascal@yahoo.fr. 3. CHU Lille, Institut Cœur Poumon, Bd Pr Leclercq, F-59000, Lille, France. 4. University of Lille, CHU Lille, F-59000, Lille, France. 5. Department of Biostatistics, Univ. Lille, CHU Lille, EA 2694 - Santé publique : épidémiologie et qualité des soins, F-59000, Lille, France.
Abstract
BACKGROUND: Obstructive sleep apnea (OSA) is associated with an increased aortic root size. This association has never been studied in patients with hypertension undergoing continuous positive airway pressure (CPAP) treatment for OSA. METHODS: The 24-h blood pressure (BP) monitoring of 142 hypertensive patients undergoing CPAP treatment for OSA was prospectively documented. Aortic root diameter was assessed by echocardiography. RESULTS: The population included 33.8% women, with an overall mean age of 60.7 ± 10.5 years. The median body mass index was 32.7 [29. 5-36.3] kg/m2. The median treatment score was 3 [2-4] anti-hypertensive drugs per day. The median 24-h systolic and diastolic BP were 130 [120-144] and 74.5 [69-82] mmHg, respectively. The night-time systolic and diastolic BP were 119.5 [108-136] and 67 [61-74] mmHg, respectively. The mean diameter of the aorta at the level of the Valsalva sinuses was 34.9 ± 4.4 mm and 20.4 ± 2.3 mm/m when adjusted for height. Patients underwent ventilation for a median duration of 3.8 [1. 7-7.5] years, with a median night-time duration of 6.6 [5. 5-7.5] h per night. The median residual apnea-hypopnea index under ventilation was 2 [1-4] events per hour. A multivariate analysis showed that aortic root size was associated with male gender (p < 0.01) and nocturnal diastolic BP (p < 0.01). When normalized for height, aortic root diameter was positively associated with age (p < 0.01) and nocturnal diastolic BP (p < 0.01). CONCLUSION: In OSA patients, the relationship between aortic root diameter and nocturnal BP persists on CPAP therapy. Further studies that evaluate the potential protective effect of OSA treatment on aortic root dilatation should monitor nocturnal diastolic BP.
BACKGROUND:Obstructive sleep apnea (OSA) is associated with an increased aortic root size. This association has never been studied in patients with hypertension undergoing continuous positive airway pressure (CPAP) treatment for OSA. METHODS: The 24-h blood pressure (BP) monitoring of 142 hypertensivepatients undergoing CPAP treatment for OSA was prospectively documented. Aortic root diameter was assessed by echocardiography. RESULTS: The population included 33.8% women, with an overall mean age of 60.7 ± 10.5 years. The median body mass index was 32.7 [29. 5-36.3] kg/m2. The median treatment score was 3 [2-4] anti-hypertensive drugs per day. The median 24-h systolic and diastolic BP were 130 [120-144] and 74.5 [69-82] mmHg, respectively. The night-time systolic and diastolic BP were 119.5 [108-136] and 67 [61-74] mmHg, respectively. The mean diameter of the aorta at the level of the Valsalva sinuses was 34.9 ± 4.4 mm and 20.4 ± 2.3 mm/m when adjusted for height. Patients underwent ventilation for a median duration of 3.8 [1. 7-7.5] years, with a median night-time duration of 6.6 [5. 5-7.5] h per night. The median residual apnea-hypopnea index under ventilation was 2 [1-4] events per hour. A multivariate analysis showed that aortic root size was associated with male gender (p < 0.01) and nocturnal diastolic BP (p < 0.01). When normalized for height, aortic root diameter was positively associated with age (p < 0.01) and nocturnal diastolic BP (p < 0.01). CONCLUSION: In OSA patients, the relationship between aortic root diameter and nocturnal BP persists on CPAP therapy. Further studies that evaluate the potential protective effect of OSA treatment on aortic root dilatation should monitor nocturnal diastolic BP.
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