Brazilian Journal of Anesthesiology
https://bjan-sba.org/article/doi/10.1016/j.bjane.2018.06.005
Brazilian Journal of Anesthesiology
Scientific Article

Effect of intravenous acetaminophen versus fentanyl on postoperative pain after transurethral lithotripsy

Efeito do acetaminofeno versus fentanil intravenosos na dor pós litotripsia transuretral

Seyed Mohammad Zolhavarieh; Seyed Habibollah Mousavi-Bahar; Maede Mohseni; Amir Hossein Emam; Jalal Poorolajal; Faeze Majzoubi

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Abstract

Abstract Background: Postoperative pain is the most common postoperative complication. This study was conducted to assess the effect of acetaminophen versus fentanyl on postoperative pain relief in patients who underwent urologic surgeries. Methods: This clinical trial was conducted on patients aged 18–65 years. Patients were randomly assigned to receive either 2000 mg acetaminophen (propacetamol) or 2 mcg.kg-1 fentanyl intravenously, 15 min before the end of surgery. The postoperative pain was evaluated every 6 h for 24 h using the Visual Analog Scale. Total morphine dose taken in 24 h and hemodynamic status were evaluated. Results: Eighty patients were enrolled into the trial. The mean score of pain in 6, 12, 18, and 24 h after surgery was lower in the acetaminophen group than in the fentanyl group but the difference was not statistically significant except in 12 and 18 h after surgery (p < 0.05). The amount of administered morphine was higher in the fentanyl group than in the acetaminophen group, but the difference was not statistically significant. The hemodynamic status including systolic and diastolic blood pressure and heart rates were nearly the same in the two groups but the SpO2 mean was significantly higher in the acetaminophen group than the fentanyl group. Conclusions: This trial indicated that intravenous acetaminophen is as effective as intravenous fentanyl in pain relief after urologic surgeries (transurethral lithotripsy).

Keywords

Acetaminophen, Fentanyl, Morphine, Postoperative pain, Hemodynamic parameters, Transurethral lithotripsy

Resumo

Resumo Justificativa: A dor pós-operatória é a complicação mais comum no período pós-operatório. Este estudo foi realizado para avaliar o efeito de acetaminofeno versus fentanil no alívio da dor pós-operatória em pacientes submetidos a cirurgias urológicas. Métodos: Este ensaio clínico foi realizado com pacientes cujas idades variou entre 18 e 65 anos. Os pacientes foram randomicamente designados para receber 2.000 mg de acetaminofeno (propacetamol) ou 2 mcg.kg-1 de fentanil por via intravenosa 15 min antes do final da cirurgia. A dor pós-operatória foi avaliada a cada 6 horas por 24 horas, utilizando a escala visual analógica. A dose total de morfina administrada em 24 horas e o estado hemodinâmico foram avaliados. Resultados: Oitenta pacientes foram incluídos no estudo. O escore médio de dor em 6, 12, 18 e 24 horas após a cirurgia foi menor no grupo acetaminofeno que no grupo fentanil, mas a diferença não foi estatisticamente significativa, exceto em 12 e 18 horas após a cirurgia (p < 0,05). A quantidade de morfina administrada foi maior no grupo fentanil que no grupo acetaminofeno, mas a diferença não foi estatisticamente significativa. O estado hemodinâmico, incluindo pressão arterial sistólica e diastólica e frequência cardíaca, foi quase o mesmo nos dois grupos, mas a média de SpO2 foi significativamente maior no grupo acetaminofeno que no grupo fentanil. Conclusões: Este estudo indicou que acetaminofeno intravenoso é tão eficaz quanto fentanil intravenoso no alívio da dor após cirurgias urológicas (litotripsia transuretral).

Palavras-chave

Acetaminofeno, Fentanil, Morfina, Dor pós-operatória, Parâmetros hemodinâmicos, Litotripsia transuretral

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