Brazilian Journal of Anesthesiology
https://bjan-sba.org/article/doi/10.1016/j.bjan.2013.03.020
Brazilian Journal of Anesthesiology
Scientific Article

Efeitos da pressão do pneumoperitôneo artificial elevada sobre a pressão arterial invasiva e os níveis dos gases sanguíneos

Effects of elevated artificial pneumoperitoneum pressure on invasive blood pressure and levels of blood gases

Octavio Hypolito; João Luiz Azevedo; Fernanda Gama; Otavio Azevedo; Susana Abe Miyahira; Oscar César Pires; Fabiana Alvarenga Caldeira; Thamiris Silva

http://dx.doi.org/10.1016/j.bjan.2013.03.020 Braz J Anesthesiol, vol.64, n2, p.98-104, 2014
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Resumo

Justificativa e objetivo: avaliar as repercussões clínicas, hemodinâmicas, gasométricas e metabólicas das altas pressões transitórias do pneumoperitônio por curto período de tempo que garantem maior segurança para a introdução do primeiro trocarte. Métodos: foram estudados 67 pacientes submetidos a procedimentos videolaparoscópicos e aleatoriamente distribuídos em grupo P12: n = 30 (pressão intraperitoneal [PIP] de 12 mmHg) e grupo P20: n = 37 (PIP de 20 mmHg). Foram avaliados a pressão arterial média (PAM), por cateterismo da artéria radial; e, mediante gasometria, o pH, a pressão parcial de oxigênio arterial (PaO2), a pressão parcial de CO2 arterial (PaCO2), o bicarbonato (HCO3) e a reserva alcalina (BE). Esses parâmetros foram avaliados em ambos os grupos no tempo zero, antes do pneumoperitônio (TP0); no tempo um (TP1), quando a PIP atinge 12 mmHg em ambos os grupos; no tempo dois (TP2), após cinco minutos com PIP de 12 mmHg em P12 e após cinco minutos com PIP de 20 mmHg em P20; e no tempo três (TP3), após 10 minutos com PIP de 12 mmHg em P12 e com PIP retornada de 20 mmHg para 12 mmHg, contados 10 minutos após TP1 em P20. Os valores diferentes dos considerados normais para os parâmetros aquilatados ou o surgimento de fenômenos orgânicos atípicos foram considerados alteracões clínicas. Resultados: ocorreram diferenças estatísticas significantes no grupo P20 na PAM, no pH, no HCO3 e na BE, mas dentro dos limites da normalidade. Não foram evidenciadas alterações clínicas e patológicas. Conclusões: pressão intra-abdominal alta e transitória causa alterações da PAM, do pH, do HCO3 e da BE sem que haja repercussão clínica no paciente.

Palavras-chave

Pneumoperitônio artificial, Laparoscopia, Instrumentos cirúrgicos, Monitoracão, Intraoperatório

Abstract

Background and objective: to evaluate the clinical, hemodynamic, gas analysis and metabolic repercussions of high transient pressures of pneumoperitoneum for a short period of time to ensure greater security for introduction of the first trocar. Methods: sixty-seven patients undergoing laparoscopic procedures were studied and randomly distributed in P12 group: n = 30 (intraperitoneal pressure [IPP] 12 mmHg) and P20 group: n = 37 (IPP of 20 mmHg). Mean arterial pressure (MAP) was evaluated by catheterization of the radial artery; and through gas analysis, pH, partial pressure of oxygen (PaO2), partial pressure of CO2 (PaCO2), bicarbonate (HCO3) and alkalinity (BE) were evaluated. These parameters were measured in both groups at time zero before pneumoperitoneum (TP0); at time 1 (TP1) when IPP reaches 12mmHg in both groups; at time 2 (TP2) after five min with IPP = 12mmHg in P12 and after 5 min with IPP = 20mmHg at P20; and at time 3 (TP3) after 10 min with IPP = 12mmHg in P12 and with return of IPP from 20 to 12mmHg, starting 10min after TP1 in P20. Different values from those considered normal for all parameters assessed, or the appearance of atypical organic phenomena, were considered as clinical changes. Results: there were statistically significant differences in P20 group in MAP, pH, HCO3 and BE, but within normal limits. No clinical and pathological changes were observed. Conclusions: high and transient intra-abdominal pressure causes changes in MAP, pH, HCO3 and BE, but without any clinical impact on the patient.

Keywords

Artificial pneumoperitoneum, Laparoscopy, Surgical instruments, Monitoring, Intraoperative

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