Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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COMPLETED
100 participants
OBSERVATIONAL
2019-01-01
2021-01-01
Brief Summary
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Detailed Description
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Obstructive sleep apnea syndrome (OSAS) is characterized by repetitive collapse of the upper airway during sleep .The obstructive apneic event is associated with considerable breathing efforts against a totally or partially occluded upper airway, and apnea is terminated by an arousal and heavy snoring as airflow is restored. Severity of OSAS is described according to total number of apneas and hyperpneas per hour of sleep, which is named as the apnea-hypopnea index (AHI).
Cardiovascular disturbances are the most serious complications of OSAS. These complications include heart failure, acute myocardial infarction, nocturnal arrhythmias, stroke, systemic and pulmonary hypertension. All these cardiovascular complications increase morbidity and mortality of OSAS.
Currently, sleep apnea is accepted as one of the identifiable causes of hypertension. Also, OSAS is closely associated with obesity and ageing.
There is conclusive evidence that OSAS influences right heart function (the pathophysiological consequences of sleep apnea-hypopnea might result in an imbalance in myocardial oxygen delivery/consumption ratio, activation of sympathetic and other neurohormonal systems, and increased right and left ventricular after load )
Conditions
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Study Design
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CASE_CONTROL
CROSS_SECTIONAL
Study Groups
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obstructive sleep apnea patients
number of 90 patients will be investigated by 2D echocardiography and cardiac MRI to determine the right ventricle function
2D Echocardiography and cardiac MRI
imaging of right ventricle by both modalities to assess right ventricle function accurately
healthy volunteers
number of 10 subjects will be investigated by 2D echocardiography and cardiac MRI to determine right ventricular function in healthy persons have risk factors other than cardiac or lung diseases
2D Echocardiography and cardiac MRI
imaging of right ventricle by both modalities to assess right ventricle function accurately
Interventions
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2D Echocardiography and cardiac MRI
imaging of right ventricle by both modalities to assess right ventricle function accurately
Eligibility Criteria
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Inclusion Criteria
* Glomerular filtration rate (MDRD formula-based) \> 60 ml/min
* Arterial hypertension diagnosed according to the European Society of Hypertension 2013 Guidelines.
Exclusion Criteria
* Acute and chronic inflammation
* Heart failure III or IV grade
* Chronic administration of drugs with confirmed nephrotoxicity and/or sympathicomimetics
* Obstructive and restrictive pulmonary diseases which may deteriorate the function of the respiratory system
18 Years
70 Years
ALL
Yes
Sponsors
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Assiut University
OTHER
Responsible Party
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Mary Zakher Bakhiet
resident doctor
Principal Investigators
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Salwa R. Demitry
Role: STUDY_DIRECTOR
Assiut University
Aliaë A. Mohamid
Role: STUDY_DIRECTOR
Assiut University
Ayman k. Hassan
Role: STUDY_DIRECTOR
Assiut University
Locations
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Assiut university
Asyut, , Egypt
Countries
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References
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Nieto FJ, Young TB, Lind BK, Shahar E, Samet JM, Redline S, D'Agostino RB, Newman AB, Lebowitz MD, Pickering TG. Association of sleep-disordered breathing, sleep apnea, and hypertension in a large community-based study. Sleep Heart Health Study. JAMA. 2000 Apr 12;283(14):1829-36. doi: 10.1001/jama.283.14.1829.
Peppard PE, Young T, Palta M, Skatrud J. Prospective study of the association between sleep-disordered breathing and hypertension. N Engl J Med. 2000 May 11;342(19):1378-84. doi: 10.1056/NEJM200005113421901.
Hung J, Whitford EG, Parsons RW, Hillman DR. Association of sleep apnoea with myocardial infarction in men. Lancet. 1990 Aug 4;336(8710):261-4. doi: 10.1016/0140-6736(90)91799-g.
Palomaki H, Partinen M, Erkinjuntti T, Kaste M. Snoring, sleep apnea syndrome, and stroke. Neurology. 1992 Jul;42(7 Suppl 6):75-81; discussion 82.
Guilleminault C, Tilkian A, Dement WC. The sleep apnea syndromes. Annu Rev Med. 1976;27:465-84. doi: 10.1146/annurev.me.27.020176.002341. No abstract available.
Lattimore JD, Celermajer DS, Wilcox I. Obstructive sleep apnea and cardiovascular disease. J Am Coll Cardiol. 2003 May 7;41(9):1429-37. doi: 10.1016/s0735-1097(03)00184-0.
Malone S, Liu PP, Holloway R, Rutherford R, Xie A, Bradley TD. Obstructive sleep apnoea in patients with dilated cardiomyopathy: effects of continuous positive airway pressure. Lancet. 1991 Dec 14;338(8781):1480-4. doi: 10.1016/0140-6736(91)92299-h.
Guilleminault C, Connolly SJ, Winkle RA. Cardiac arrhythmia and conduction disturbances during sleep in 400 patients with sleep apnea syndrome. Am J Cardiol. 1983 Sep 1;52(5):490-4. doi: 10.1016/0002-9149(83)90013-9.
Weitzenblum E, Krieger J, Apprill M, Vallee E, Ehrhart M, Ratomaharo J, Oswald M, Kurtz D. Daytime pulmonary hypertension in patients with obstructive sleep apnea syndrome. Am Rev Respir Dis. 1988 Aug;138(2):345-9. doi: 10.1164/ajrccm/138.2.345.
Chobanian AV, Bakris GL, Black HR, Cushman WC, Green LA, Izzo JL Jr, Jones DW, Materson BJ, Oparil S, Wright JT Jr, Roccella EJ; National Heart, Lung, and Blood Institute Joint National Committee on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure; National High Blood Pressure Education Program Coordinating Committee. The Seventh Report of the Joint National Committee on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure: the JNC 7 report. JAMA. 2003 May 21;289(19):2560-72. doi: 10.1001/jama.289.19.2560. Epub 2003 May 14.
Levinson PD, McGarvey ST, Carlisle CC, Eveloff SE, Herbert PN, Millman RP. Adiposity and cardiovascular risk factors in men with obstructive sleep apnea. Chest. 1993 May;103(5):1336-42. doi: 10.1378/chest.103.5.1336.
Ancoli-Israel S, Coy T. Are breathing disturbances in elderly equivalent to sleep apnea syndrome? Sleep. 1994 Feb;17(1):77-83. doi: 10.1093/sleep/17.1.77. No abstract available.
Javaheri S. Central sleep apnea in congestive heart failure: prevalence, mechanisms, impact, and therapeutic options. Semin Respir Crit Care Med. 2005 Feb;26(1):44-55. doi: 10.1055/s-2005-864206.
Other Identifiers
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17100300
Identifier Type: -
Identifier Source: org_study_id
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