Association between the rapid shallow breathing index and extubation success in patients with traumatic brain injury.

OBJECTIVE: To investigate the association between the rapid shallow breathing index and successful extubation in patients with traumatic brain injury. METHODS: This study was a prospective study conducted in patients with traumatic brain injury of both genders who underwent mechanical ventilation for at least two days and who passed a spontaneous breathing trial. The minute volume and respiratory rate were measured using a ventilometer, and the data were used to calculate the rapid shallow breathing index (respiratory rate/tidal volume). The dependent variable was the extubation outcome: reintubation after up to 48 hours (extubation failure) or not (extubation success). The independent variable was the rapid shallow breathing index measured after a successful spontaneous breathing trial. RESULTS: The sample comprised 119 individuals, including 111 (93.3%) males. The average age of the sample was 35.0 ± 12.9 years old. The average duration of mechanical ventilation was 8.1 ± 3.6 days. A total of 104 (87.4%) participants achieved successful extubation. No association was found between the rapid shallow breathing index and extubation success. CONCLUSION: The rapid shallow breathing index was not associated with successful extubation in patients with traumatic brain injury.

Associacao entre o indice de respiracao rapida e superficial e o sucesso da extubacao em pacientes com traumatismo cranioencefalico / Association between the rapid shallow breathing index and extubation success in patients with traumatic brain injury

OBJETIVO: Verificar a associação entre o índice de respiração rápida e superficial e o sucesso da extubação em pacientes com traumatismo cranioencefálico. MÉTODOS: Estudo prospectivo, formado por pacientes com traumatismo cranioencefálico, de ambos os gêneros, ventilados mecanicamente por pelo menos 2 dias, que obtiveram sucesso no teste de respiração espontânea. Foram mensurados, por meio da ventilometria, o volume-minuto e a frequência respiratória, sendo calculado o índice de respiração rápida e superficial (frequência respiratória/volume corrente). A variável dependente foi o resultado da extubação: reintubação em 48 horas (falha da extubação) ou não (sucesso da extubação). A variável independente foi o índice de respiração rápida e superficial mensurado após o sucesso no teste de respiração espontânea. RESULTADOS: A amostra foi constituída por 119 pacientes, sendo 111 (93,3%) do gênero masculino. A média da idade foi de 35,0±12,9 anos. O tempo médio de ventilação mecânica foi de 8,1±3,6 dias. Cento e quatro (87,4%) pacientes obtiveram sucesso na extubação. Não foi observada associação entre o índice de respiração rápida e superficial e o sucesso da extubação. CONCLUSÃO: O índice de respiração rápida e superficial não esteve associado ao sucesso da extubação em pacientes com traumatismo cranioencefálico. .

OBJECTIVE: To investigate the association between the rapid shallow breathing index and successful extubation in patients with traumatic brain injury. METHODS: This study was a prospective study conducted in patients with traumatic brain injury of both genders who underwent mechanical ventilation for at least two days and who passed a spontaneous breathing trial. The minute volume and respiratory rate were measured using a ventilometer, and the data were used to calculate the rapid shallow breathing index (respiratory rate/tidal volume). The dependent variable was the extubation outcome: reintubation after up to 48 hours (extubation failure) or not (extubation success). The independent variable was the rapid shallow breathing index measured after a successful spontaneous breathing trial. RESULTS: The sample comprised 119 individuals, including 111 (93.3%) males. The average age of the sample was 35.0±12.9 years old. The average duration of mechanical ventilation was 8.1±3.6 days. A total of 104 (87.4%) participants achieved successful extubation. No association was found between the rapid shallow breathing index and extubation success. CONCLUSION: The rapid shallow breathing index was not associated with successful extubation in patients with traumatic brain injury. .