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Comparison of Pressure Support and Pressure Control Ventilation in Chronic Respiratory Failure

12:58 EDT 24th July 2014 | BioPortfolio

Summary

This study is looking at whether there is a difference in outcomes using two different types of breathing support in those patients who have chronic respiratory failure (patients who under-breathe).

There is little data to demonstrate which mode of ventilation is better in terms of physiological outcomes and outcome data relating to patient symptoms.

We hypothesize that one type of breathing support: pressure support ventilation would be more comfortable for patients as it more closely matches a patient's own respiratory pattern and and so leads to improved adherence and consequent improvement in quality of life.

Patients with respiratory failure will be randomly assigned to receive either pressure support ventilation or pressure control ventilation for the first 6 weeks and then cross-over to receive the mode not previously used for a further 6 weeks. They will have baseline data recorded and then be followed up after each 6 week block.

Study Design

Allocation: Randomized, Control: Active Control, Intervention Model: Crossover Assignment, Masking: Single Blind (Subject), Primary Purpose: Treatment

Conditions

COPD

Intervention

Pressure support ventilation, Pressure control ventilation

Location

Guy's and St Thomas' NHS Foundation Trust
London
United Kingdom
SE1 7EH

Status

Recruiting

Source

Guy's and St Thomas' NHS Foundation Trust

Results (where available)

View Results

Links

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Adaptive Support Ventilation in the Weaning of COPD

Adaptive support ventilation (ASV) is a closed loop ventilation mode that can act both as pressure support (PSV) and pressure controlled (PCV) ventilation. Weaning with ASV shows promising...

The Effect of Cycling Off Criteria During Pressure Support Ventilation in Chronic Obstructive Pulmonary Disease (COPD) Patients

The investigators' aim is to study the effect of cycling off criteria during pressure support ventilation in COPD patients at two levels of PEEP and PSV.

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The purpose of this study is to demonstrate that mechanical ventilation guided by the diaphragm EMG signal (also know as neurally adjusted ventilatory assist [NAVA]) is superior compared t...

PubMed Articles [17429 Associated PubMed Articles listed on BioPortfolio]

Effects of Adaptive Support Ventilation and Synchronized Intermittent Mandatory Ventilation on Peripheral Circulation and Blood Gas Markers of COPD Patients with Respiratory Failure.

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Ventilation Therapy for Patients Suffering from Obstructive Lung Diseases.

Severe bronchial obstruction due to one of the major pulmonary diseases: asthma, COPD, or emphysema often requires mechanical ventilation support. Otherwise, patients are at risk of severe hypooxygena...

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Background. Correct volume management is essential in patients with respiratory failure. We investigated the ability of respiratory variations in noninvasive pulse pressure (ΔPP), photoplethysmograph...

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Medical and Biotech [MESH] Definitions

Techniques for effecting the transition of the respiratory-failure patient from mechanical ventilation to spontaneous ventilation, while meeting the criteria that tidal volume be above a given threshold (greater than 5 ml/kg), respiratory frequency be below a given count (less than 30 breaths/min), and oxygen partial pressure be above a given threshold (PaO2 greater than 50mm Hg). Weaning studies focus on finding methods to monitor and predict the outcome of mechanical ventilator weaning as well as finding ventilatory support techniques which will facilitate successful weaning. Present methods include intermittent mandatory ventilation, intermittent positive pressure ventilation, and mandatory minute volume ventilation.

Ventilatory support system using frequencies from 60-900 cycles/min or more. Three types of systems have been distinguished on the basis of rates, volumes, and the system used. They are high frequency positive-pressure ventilation (HFPPV); HIGH-FREQUENCY JET VENTILATION; (HFJV); and high-frequency oscillation (HFO).

Application of positive pressure to the inspiratory phase when the patient has an artificial airway in place and is connected to a ventilator.

A method of mechanical ventilation in which pressure is maintained to increase the volume of gas remaining in the lungs at the end of expiration, thus reducing the shunting of blood through the lungs and improving gas exchange.

Respiratory support system used primarily with rates of about 100 to 200/min with volumes of from about one to three times predicted anatomic dead space. Used to treat respiratory failure and maintain ventilation under severe circumstances.

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