Postoperative Complications in Patients With Obesity Hypoventilation Syndrome

Study Results

Results pending

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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Recruitment Status

UNKNOWN

Total Enrollment

999 participants

Study Classification

OBSERVATIONAL

Study Start Date

2016-11-30

Study Completion Date

2018-06-30

Brief Summary

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Obstructive sleep apnea (OSA) and Obesity-Hypoventilation Syndrome (OHS) are common conditions in obesity, which may influence the prognosis in patients undergoing surgery. There is a need for simple screening tools to identify such patients at high risk. The current multicenter observational study aims to investigate occurrence of OSA and OHS in obese individuals undergoing elective abdominal surgery and further address its impact on perioperative and postoperative complications.

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Detailed Description

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Obstructive sleep apnea (OSA) and Obesity-Hypoventilation Syndrome (OHS) are common conditions in obesity, which may influence the prognosis in patients undergoing surgery. There is a need for simple screening tools to identify such patients at high risk. The current multicenter observational study aims to investigate occurrence of OSA and OHS in obese individuals undergoing elective abdominal surgery by using questionnaires (STOPBANG questionnaire, Berlin Questionnaire, and Epworth Sleepiness Scale) and arterial blood gases. Perioperative and 72-h postoperative complications will be documented.

Conditions

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Obstructive Sleep Apnea Obesity Hypoventilation Syndrome Hypercapnia Post-Op Complication Acid-Base Imbalance

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Study Groups

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Obstructive Sleep Apnea (OSA)

Patients with OSA

No interventions assigned to this group

Obesity-Hypoventilation Syndrome (OHS)

Patients with OHS

No interventions assigned to this group

Normal Blood Gases

No interventions assigned to this group

Eligibility Criteria

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Inclusion Criteria

* Patients undergoing elective abdominal surgery
* Body-Mass-Index \>=30 kg/m2
* Ability to read and speak
* Signed informed consent.

Exclusion Criteria

* Use of diuretics
* Use of theophylline
* Use of respiratory depressing drugs
* Severe lung disease (FEV1/FVC\<%50)
* Severe hearth failure (EF\<%35)
* Central nervous system or muscle disease
* Untreated hypothyroidism
* Renal failure (GFR\<50)
* Total parenteral nutrition more than 72 hours
* Hypokalemia
* Hyponatremia
* Hypomagnesemia
* Hypoalbuminemia
* Known sleep apnea or obesity hypoventilation syndrome
* Blood transfusion from blood bank within 72 hours prior to surgery

Minimum Eligible Age

18 Years

Maximum Eligible Age

75 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No