A Comparative study of Dynamic MRI with Drug induced Sleep Endoscopy in Obstructive Sleep Apnea Patients

Chandru, R (2016) A Comparative study of Dynamic MRI with Drug induced Sleep Endoscopy in Obstructive Sleep Apnea Patients. Masters thesis, Madras Medical College, Chennai.


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BACKGROUND: OSAS is a disease of modern ages and it is found to predispose to hypertension, myocardial infarction and sudden death .It is imperative to identify the level of obstruction to decide the treatment protocol. Level of obstruction can be identified by Dynamic MRI and DISE. AIM OF THE STUDY: To identify and compare the level of obstruction in Dynamic MRI with DISE in OSAS patients. MATERIALS AND METHODS: Based on inclusion and exclusion criteria 35 patients were enrolled in our study. These patients were subjected to Sleep MRI to identify the level of obstruction. Then patients were subjected to Drug Induced Sleep Endoscopy to identify the level of obstruction. RESULTS; 82.8% correlation was seen between dynamic MRI and DISE in identifying the level of obstruction.3 patients had no obstruction in MRI but had obstruction at velum in DISE. ONE patient who had tongue base obstruction in Dynamic MRI had tongue base and epiglottis level obstruction in DISE .ONE patient had obstruction in velum and epiglottis in Dynamic MRI but had obstruction only in velum level in DISE. ONE patient had obstruction at oropharynx in Dynamic MRI was found to have obstruction in oropharynx and epiglottis in DISE. CONCLUSION: Both Dynamic MRI and DISE are equally good in identifying the level of obstruction. Dynamic MRI is non-invasive and gives accurate measurements of upper airway while in DISE patient is subjected to an anaesthetic procedure. In all cases planned for surgery after identifying level of obstruction with dynamic MRI, DISE can be done on table before the planned surgery to confirm the level of obstruction so that separate anesthesia for DISE can be avoided.

Item Type: Thesis (Masters)
Additional Information: Reg.No.221314001
Uncontrolled Keywords: Dynamic MRI ; DISE ; Level of obstruction ; obstructive sleep apnea.
Subjects: MEDICAL > Otolaryngology
Depositing User: Devi S
Date Deposited: 12 Feb 2019 15:24
Last Modified: 13 Feb 2019 04:33
URI: http://repository-tnmgrmu.ac.in/id/eprint/10547

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