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Clinical Trial Summary

To assess patients with hypercapnic respiratory failure using echocardiography,cardiac output measurements and markers of neural respiratory drive (EMGpara) prior to, during and after non-invasive ventilation (NIV) initiation, and to follow the patients for 3 months. The investigators hypothesize that the improvement in cardiac function and/or respiratory mechanics over time are associated with ongoing improvements in oxygenation, quality of life and exercise capacity.


Clinical Trial Description

Respiratory failure is characterized by the incapacity of the respiratory system to maintain the normal arterial blood gas homeostasis. Specifically, the overlap of hypoxaemia and hypercapnia (PaCO2 >6 kPa) is referred to as Hypercapnic Respiratory Failure (HRF). HRF is one of the most common causes for hospital admission with high re-admission rates, therefore constitute a major burden on healthcare systems. Non Invasive Ventilation (NIV) is a well established treatment in patients with hypercapnic respiratory failure who frequently suffer with associated pulmonary hypertension (PH). NIV helps to increase arterial oxygenation and reduces hypercapnia. It is used in patients with hypercapnic respiratory failure caused by Obesity Hypoventilation Syndrome (OHS). The associated degree of PH can lead to an increased afterload of the right ventricle (RV) that causes progressive remodelling of the right heart. RV dysfunction is correlated with a reduced long term prognosis in respiratory conditions. In literature NIV is shown as effective method to treat acute hypercapnic respiratory failure in OHS.

It has not been described how NIV impacts on cardiac function and NRD in OHS. ;


Study Design


Related Conditions & MeSH terms


NCT number NCT02699112
Study type Observational
Source Guy's and St Thomas' NHS Foundation Trust
Contact
Status Completed
Phase
Start date November 2015
Completion date March 2018

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