An observational study in Obstructive Sleep Apnea, sponsored by Assiut University. Not yet recruiting. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-11-13.
Sponsored by Assiut University · Observational
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Among 13 studies in Sleep Apnea, Obstructive by Assiut University — 7 open to participants now, 7 under way, none of them phase 3. Sleep Apnea, Obstructive · Assiut University.
Among the 13 studies in Sleep Apnea, Obstructive by Assiut University, this one is the 3rd largest by planned enrollment of the 11 observational ones that give a count, is one of 4 that started in 2026, is one of 11 observational ones, and was the 13th registered.
2,242 studies on the registry are indexed under Sleep Apnea, Obstructive; 474 are open to participants now.
Browse Sleep Apnea, Obstructive studies →7 of the 13 studies in Sleep Apnea, Obstructive by Assiut University are open now. Recruiting first, the newest first:
Assiut University
Ages 18–60
Assiut University
Ages 18+
Assiut University
Ages 18+
Assiut University
Ages 18–65
Assiut University
Ages 18–60
Of the 313 Sleep Apnea, Obstructive studies recruiting now, 146 (47%) set no upper age limit and 124 (40%) stop at 75 or younger; 52 take children under 18; 65 take healthy volunteers.
This study: 18 Years and older · all sexes · no healthy volunteers.
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13 studies; the count open now beside each. This study's row is marked.
First in 2017; this study’s year is marked. 4 started in 2026.
This study's planned enrollment of 95 is close to the median of 105 across 666 observational studies indexed under Sleep Apnea, Obstructive.
Median enrollment 30 across the 2 interventional studies, 80 across the 11 observational. Of the 1 that completed or were terminated, 0 (0%) have results posted.
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Assiut University is the lead sponsor of 5,081 studies on the registry; 2,179 are open to participants now.
Of its 14 completed or terminated interventional studies of FDA-regulated products, 0 (0%) have results posted.
5 of the studies in Sleep Apnea, Obstructive by Assiut University that are under way reach primary completion within a year, 0 of them phase 3. Phase 3 first, then by date:
| Study | Primary completion |
|---|---|
| NCT07716995Assiut UniversityAssociation Between Metabolic Associated Fatty Liver Disease and Obstructive Sleep Apnea | 2027-02-01 |
| NCT07184060Assiut UniversityEchocardiographic Assessment of Pulmonary Hypertension in Obstructive Sleep Apnea | 2027-04-30 |
| NCT07693101Assiut UniversityEmpirical CPAP Therapy for Suspected Obstructive Sleep Apnea in a Resource-Limited Setting | 2027-08 |
| NCT07678918Assiut UniversityCognitive Function and Quality of Life in Obstructive Sleep Apnea | 2027-08 |
| NCT07935057Assiut UniversityDiaphragmatic Ultrasound and Hypoxic Burden in "Osa" | 2027-11-01 |
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Among the 13 studies in Sleep Apnea, Obstructive by Assiut University, from their registry updates:
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Secondary objectives:
Obstructive sleep apnea (OSA) is a serious health condition that has been estimated to affect nearly 936 million adults aged between 30 and 69 worldwide according to recent to recent global estimates.
OSA is therefore a very common condition that results in several health consequences, such as cardiovascular pathology, metabolic disruptions, cognitive decline .
attended Polysomnography (PSG) is considered the gold standard for diagnosis of OSA ,with apnea-hypopnea index (AHI) as the more frequently used indicator of disease severity.
However in recent studies AHI have been shown to be inconsistently related to adverse consequences of OSA Hypoxic burden defined as the sum of individual area under oxygen saturation curves related to every respiratory event obtained by pulse oximeter during the total sleep time, has been suggested as a more accurate measure of OSA severity relating to symptoms and adverse effects.
The diaphragm as the most important muscle of respiration, can impact OSA severity although the extent of such effect is still unclear.
adult patients who are confirmed to have OSA by polysomnography
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Exclusion Criteria:
Respiratory diseases:
Bronchial asthma, , bronchiectasis, interstitial lung disease, neuromuscular respiratory disease
Neurological/diaphragmatic disorders:
Neuromuscular disorders, muscular dystrophies, previous major thoracic surgery affecting the diaphragm
decompensated heart failure, significant pulmonary hypertension, active acute respiratory infection
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Chronic obstructive pulmonary disease: long-term lung disease that makes it hard to breathe out, including emphysema and chronic bronchitis.
Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.
Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
COPD
Chronic obstructive pulmonary disease: long-term lung disease that makes it hard to breathe out, including emphysema and chronic bronchitis.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Cancer (malignancy)
Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.
Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Establish a correlation between OSA severity and degree of diaphragmatic dysfunction using hypoxic burden related to diaphragmatic ultrasound parameters
Time frame: Baseline
the association between hypoxic burden and diaphragmatic thickness fraction after adjusted for AHI and BMI
Time frame: Baseline
No study locations are listed for this record.
Plan to share: Undecided
Start is estimated for Dec 2026; primary completion for Nov 2027, 11 months later.
How these figures are worked out, and which studies are left out of them.
From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗
This study is not yet recruiting, as verified in Sep 2026. You cannot join it, but the record below documents what was studied.
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