Avaliaçäo de fatores que influenciam no desmame de pacientes em ventilaçäo mecânica prolongada após cirurgia cardíaca / Assessment of factors that influence weaning from long-term mechanical ventilation after cardiac surgery
Arq. bras. cardiol
;
80(3): 301-310, Mar. 2003. tab, graf
Artículo
en Portugués, Inglés
| LILACS
| ID: lil-331108
ABSTRACT
OBJECTIVE:
To analyze parameters of respiratory system mechanics and oxygenation and cardiovascular alterations involved in weaning tracheostomized patients from long-term mechanical ventilation after cardiac surgery.METHODS:
We studied 45 patients in their postoperative period of cardiac surgery, who required long-term mechanical ventilation for more than 10 days and had to undergo tracheostomy due to unsuccessful weaning from mechanical ventilation. The parameters of respiratory system mechanics, oxigenation and the following factors were analyzed type of surgical procedure, presence of cardiac dysfunction, time of extracorporeal circulation, and presence of neurologic lesions.RESULTS:
Of the 45 patients studied, successful weaning from mechanical ventilation was achieved in 22 patients, while the procedure was unsuccessful in 23 patients. No statistically significant difference was observed between the groups in regard to static pulmonary compliance (p=0.23), airway resistance (p=0.21), and the dead space/tidal volume ratio (p=0.54). No difference was also observed in regard to the variables PaO2/FiO2 ratio (p=0.86), rapid and superficial respiration index (p=0.48), and carbon dioxide arterial pressure (p=0.86). Cardiac dysfunction and time of extracorporeal circulation showed a significant difference.CONCLUSION:
Data on respiratory system mechanics and oxygenation were not parameters for assessing the success or failure. Cardiac dysfunction and time of cardiopulmonary bypass, however, significantly interfered with the success in weaning patients from mechanical ventilation
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Respiración Artificial
/
Desconexión del Ventilador
/
Mecánica Respiratoria
/
Procedimientos Quirúrgicos Cardíacos
Límite:
Femenino
/
Humanos
/
Masculino
País/Región como asunto:
America del Sur
/
Brasil
Idioma:
Inglés
/
Portugués
Revista:
Arq. bras. cardiol
Asunto de la revista:
Cardiología
Año:
2003
Tipo del documento:
Artículo
País de afiliación:
Brasil
Institución/País de afiliación:
Universidade de São Paulo/BR
Similares
MEDLINE
...
LILACS
LIS