Active clinical trials for "Obesity Hypoventilation Syndrome"

Transcutaneous capnography (PtcCo2) recently showed good agreement with blood gases to assess hypercapnia. There is no study that has evaluated the benefit to realise systematically a nocturnal PtcCo2 in the follow-up of home-ventilated patient with obesity hypoventilation syndrome (OHS). The investigators will evaluate the intake bring by nocturnal transcutaneous capnography, compared to nocturnal oximetry and blood gases, to diagnose nocturnal alveolar hypoventilation in a population of patient presenting an OHS, treated by non invasive ventilation (NIV) at home .

Obesity hypoventilation syndrome (OHS) is defined as a combination of obesity [body mass index (BMI) ≥30 kg/m2], chronic daytime hypercapnia (PaCO2 >45 mm Hg), and sleep-apnea in the absence of other known causes of hypercapnia. Respiratory system compliance decreases and resistance increases in OHS. This causes increase in work of breathing and oxygen cost of breathing, which may result in respiratory muscle fatigue. Increase in respiratory workload and increase in resistance to respiration is expected to decrease in respiratory muscle endurance (RME) in subjects with OHS.

A prospective observation study to screen adult obese (BMI ≥30 kg/m2) patients who were newly admitted to the medical intensive care units and turned out to be diagnosed as Obesity hypoventilation syndrome(OHS). The investigators purpose is to look into the prevalence, predictive factors, and outcomes of OHS in these critically ill patients.

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.

The purpose of this study is to determine whether breathing pattern (specifically the inspiratory time/total respiratory cycle value) has an influence over the response to the noninvasive mechanical ventilation.

The purpose of the study is to determined the prevalence of obesity-hypoventilation syndrome in patients with metabolic syndrom.

This study seeks to correlate microbiome sequencing data with information provided by patients and their medical records regarding obesity.