Related Experiment Videos
Noninvasive versus conventional mechanical ventilation. An epidemiologic survey
A Carlucci1, J C Richard, M Wysocki
1Paris XII Université, Department of Biostatistics, Medical Intensive Care Unit, Institut National de la Recherche et de la Santé Medicale U 492, Henri Mondor Hospital, Créteil, France.
Summary
Noninvasive mechanical ventilation (NIV) is effective for selected patients with acute respiratory failure (ARF), showing lower risks of pneumonia and death compared to endotracheal intubation (ETI). NIV success depends on patient selection and clinical tolerance, with failure leading to longer hospital stays.
Area of Science:
- Critical Care Medicine
- Respiratory Medicine
- Pulmonary Diseases
Background:
- Acute respiratory failure (ARF) necessitates ventilatory support, with noninvasive mechanical ventilation (NIV) and endotracheal intubation (ETI) being primary methods.
- The clinical utility and effectiveness of NIV in diverse ARF etiologies require ongoing assessment in intensive care units (ICUs).
Purpose of the Study:
- To evaluate the incidence of NIV use and its effectiveness in clinical practice for patients with ARF.
- To compare outcomes, including pneumonia and mortality rates, between NIV and ETI in ARF patients.
Main Methods:
- A prospective survey conducted over 3 weeks in 42 ICUs.
- Inclusion of all patients requiring ventilatory support for ARF, categorized by ETI or NIV.
- Analysis of patient demographics, reasons for ventilation, and outcomes such as nosocomial pneumonia, mortality, and length of stay.
Main Results:
- NIV was used in 16% of patients requiring ventilatory support, particularly for hypercapnic ARF (50%) and pulmonary edema (27%).
- NIV use was associated with significantly lower rates of nosocomial pneumonia (10% vs. 19%) and mortality (22% vs. 41%) compared to ETI.
- Factors predicting mortality included Simplified Acute Physiology Score (SAPS) II, McCabe/Jackson score, and hypoxemic ARF; NIV success correlated with reduced pneumonia and death risks.
Conclusions:
- NIV is a successful ventilatory support strategy for selected ARF patients, offering reduced risks of pneumonia and mortality compared to ETI.
- Patient selection, clinical tolerance, and underlying ARF severity are crucial for successful NIV implementation.
- Failure of NIV necessitates ETI and is associated with prolonged hospital stays, highlighting the importance of appropriate NIV application.