Bedside evaluation of efficient airway humidification during mechanical ventilation of the critically ill
| Autor: | Didier Dreyfuss, Philippe Markowicz, Laurence Mier, François Coste, Jean-Damien Ricard, Kamel Djedaini |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
Pulmonary and Respiratory Medicine
Hot Temperature business.operation medicine.medical_treatment Critical Illness Point-of-Care Systems Critical Care and Intensive Care Medicine Teaching hospital law.invention Body Temperature law medicine Intubation Intratracheal Intubation Humans Prospective Studies Endotracheal tube Mechanical ventilation Observer Variation Critically ill business.industry Mallinckrodt Humidity Middle Aged Intensive care unit Respiration Artificial Trachea Intensive Care Units Anesthesia Acute Disease Cardiology and Cardiovascular Medicine Airway business Respiratory Insufficiency |
| Zdroj: | Chest. 115(6) |
| ISSN: | 0012-3692 |
| Popis: | To determine the correlation between simple rating of condensation seen in the flex-tube connecting the heating and humidifying device used with the endotracheal tube and hygrometric parameters (absolute and relative humidity and tracheal temperature) measured by psychrometry.Prospective randomized clinical trial.Medical ICU of Louis Mourier Hospital, Colombes, France, a university-affiliated teaching hospital.Forty-five consecutive mechanically ventilated critically ill patients.Patients undergoing mechanical ventilation were randomly assigned to receive humidification with one of the four heat and moisture exchangers (HMEs) tested or with a conventional heated humidifier.The hygrometric performances of four HMEs (BB2215, BB50, and BB100 from Pall Biomedical, Saint-Germaine-en-Laye, France; and Hygrobac-Dar from Mallinckrodt, Mirandola, Italy) and a heated humidifier (FisherPaykel; Auckland, New Zealand) were studied after 3 h and also after 48 h of use for the Hygrobac-Dar and correlated to a clinical visual inspection rating the amount of condensation in the flex-tube of the endotracheal tube.A total of 95 measurements in 45 patients were performed. The best hygrometric parameters were obtained with the heated humidifier (p0.001). The Hygrobac-Dar yielded significantly higher values for both humidities and tracheal temperature than the other three HMEs (p0.001). The performance of Hygrobac-Dar was unchanged after 48 h of use. There was a significant correlation between the condensation seen in the flex-tube and the hygrometric parameters measured by psychrometry (absolute humidity, rho = 0.7; relative humidity, rho = 0.7; tracheal temperature, rho = 0.5, p0.0001).In mechanically ventilated ICU patients, visual evaluation of the condensation in the flex-tube provides an estimation of the heating and humidifying efficacy of the heating and humidifying device used, thus allowing the clinician bedside monitoring of airway humidification. |
| Databáze: | OpenAIRE |
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