Overnight Polysomnography and Respiratory Volume Monitor (NCT02295306)
🩺 Plain-English Summary (8th-Grade Level)
Sleep disordered breathing; specifically obstructive sleep apnea (OSA) is a disease affecting 8-12% of the general population and often more than 70% of the bariatric surgical population. OSA is characterized by the repetitive collapse of the upper airway, causing a reduction or cessation in airflow and decreases in oxygen saturation. These events are resolved by arousals from sleep, reducing sleep quality and leading to excessive daytime sleepiness. An in-laboratory polysomnography (PSG) is the gold standard for the diagnosis of OSA. Previous studies have established obstructive sleep apnea (OSA) as a potential independent risk factor for postoperative complications, adverse surgical outcomes, and longer hospital stays. Patients with OSA have an increase in postoperative complications, the most frequent being oxygen desaturation, postoperative atelectasis and increased postoperative pain. Despite the clear risks, OSA remains under diagnosed with an estimated 25-30% of patients at a high risk for OSA. It has been suggested that OSA events may be even more frequent post operatively because of the residual effects of anesthesia and the use of potent pain medications such as opioids. Postoperatively apneas often go undetected and untreated. The use of supplemental O2 may mask any desaturations and there is no convenient technology to noninvasively monitor ventilation to detect apnea and hypopnea in post-surgical patients. New advances in technology and digital signal processing have led to the development of an impedance based Respiratory Volume Monitor (RVM). The RVM (ExSpiron™, Respiratory Motion, Inc.; Waltham, MA) has been shown to provide accurate real-time, continuous, non-invasive measurements of tidal volume (TV), minute ventilation (MV) and respiratory rate (RR). Our main hypotheses are that the non-invasive, impedance-based RVM monitor will accurately reflect TV, RR and MV during sleep and will detect apneas and hypopneas accurately.
Who can join: To join this study, participants generally need to meet the listed inclusion criteria (1 items) and avoid the listed exclusions (1 items).
Location: Tufts Medical Center — Boston, Massachusetts
📋 "Do I Qualify?" — 1-Minute Self Screener
Instant ChecklistCheck every box below. If you can check all of them, you may meet the study's basic screening requirements (final eligibility is confirmed by the site team).
Usually NOT eligible if any of the following apply:
- Exclusion Criteria: \- Patients not competent to give informed consent, patients with implantable electronic devices, such as pacemakers, stimulators, etc. pregnant or lactating women.
🔍 Extracted verbatim from the official NIH eligibility criteria. Always confirm with the study coordinator.
📍 All Participating Trial Locations (1 Sites)
- Tufts Medical Center — Boston, Massachusetts
💰 Cost, Insurance & Patient Rights
- 100% Free Items: The investigational treatment and protocol-required procedures are supplied at zero cost by the sponsor.
- Routine Patient Care: Under federal law (ACA § 2709) and many state statutes, routine care costs are covered during participation.
- Voluntary Participation: You may withdraw at any time without affecting your standard medical care.