Brazilian Journal of Anesthesiology
https://bjan-sba.org/article/doi/10.1590/S0034-70942012000500009
Brazilian Journal of Anesthesiology
Scientific Article

Influência da posição do dreno pleural na função pulmonar de pacientes submetidos à revascularização do miocárdio

Influence of pleural drain insertion in lung function of patients undergoing coronary artery bypass grafting

Irinea Beatriz Carvalho Ozelami Vieira; Fabiano F. Vieira; João Abrão; Ada Clarice Gastaldi

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Resumo

JUSTIFICATIVA E OBJETIVOS: Estudo longitudinal, prospectivo, aleatório e encoberto para avaliar a influência do local de inserção do dreno pleural, de PVC atóxico, na função pulmonar e na dor pós-operatória dos pacientes submetidos à revascularização do miocárdio nos três primeiros dias pós-cirúrgicos e logo após a retirada do dreno. PACIENTES E MÉTODOS: Trinta e seis pacientes escalados para cirurgia eletiva de revascularização do miocárdio, com uso de circulação extracorpórea (CEC), em dois grupos: grupo SX (dreno subxifoide) e grupo IC (dreno intercostal). Feitos registros espirométricos, da gasometria arterial e da dor. RESULTADOS: Trinta e um pacientes analisados, 16 no grupo SX e 15 no grupo IC. O grupo SX apresentou valores espirométricos maiores do que o grupo IC (p < 0,05) no pós-operatório (PO), denotando menor influência do local do dreno na respiração. A PaO2 arterial no segundo PO aumentou significantemente no grupo SX quando comparada com o grupo IC (p < 0,0188). A intensidade da dor no grupo SX, antes e após a espirometria, era menor do que no grupo IC (p < 0,005). Houve aumento significativo dos valores espirométricos em ambos os grupos após a retirada do dreno pleural. CONCLUSÃO: A inserção do dreno na região subxifoide altera menos a função pulmonar, provoca menos desconforto e possibilita uma melhor recuperação dos parâmetros respiratórios.

Palavras-chave

CIRURGIA, Cardíaca, COMPLICAÇÕES, Pneumotórax, DOR, Pós-operatória, TÉCNICAS DE MEDIÇÃO, Espirometria, Dor

Abstract

BACKGROUND AND OBJECTIVES: Longitudinal, prospective, randomized, blinded Trial to assess the influence of pleural drain (non-toxic PVC) site of insertion on lung function and postoperative pain of patients undergoing coronary artery bypass grafting in the first three days post-surgery and immediately after chest tube removal. METHOD: Thirty six patients scheduled for elective myocardial revascularization with cardiopulmonary bypass (CPB) were randomly allocated into two groups: SX group (subxiphoid) and IC group (intercostal drain). Spirometry, arterial blood gases, and pain tests were recorded. RESULTS: Thirty one patients were selected, 16 in SX group and 15 in IC group. Postoperative (PO) spirometric values were higher in SX than in IC group (p < 0.05), showing less influence of pleural drain location on breathing. PaO2 on the second PO increased significantly in SX group compared with IC group (p < 0.0188). The intensity of pain before and after spirometry was lower in SX group than in IC group (p < 0.005). Spirometric values were significantly increased in both groups after chest tube removal. CONCLUSION: Drain with insertion in the subxiphoid region causes less change in lung function and discomfort, allowing better recovery of respiratory parameters.

Keywords

Chest tubes, Coronary artery bypass grafting, Pneumothorax, Pain, Postoperative, Pain Measurement, Spirometry

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