Abstract
Background
The purpose of this study was to compare the postoperative inflammatory response and severity of pain between single-incision laparoscopic surgery (SILS) cholecystectomy and conventional laparoscopic cholecystectomy (LC).
Methods
Two groups of 20 patients were prospectively randomized to either conventional LC or SILS cholecystectomy. Serum interleukin-6 (IL-6) levels were assayed before surgery, at 4–6 h, and at 18–24 h after the procedure. Serum C-reactive protein (CRP) levels also were assayed at 18–24 h after surgery. Pain was measured at each of three time points after surgery using the visual analogue scale (VAS). The number of analgesia doses administered in the first 24 h after the procedure also was recorded and 30-day surgical outcomes were documented.
Results
The groups had equivalent body mass index (BMI), age, and comorbidity distribution. Peak IL-6 levels occurred 4–6 h after surgery, and the median level was 12.8 pg/ml in the LC and 8.9 pg/ml in the SILS group (p = 0.5). The median CRP level before discharge was 1.6 mg/dl in the LC and 1.9 mg/dl in the SILS group (p = 0.38). There was no difference in either analgesic use or pain intensity as measured by the VAS between the two groups (p = 0.72). The length of the surgical procedure was significantly longer in the SILS group (p < 0.001). No intraoperative complications occurred in either group.
Conclusions
Single-incision laparoscopic surgery does not significantly reduce systemic inflammatory response, postoperative pain, or analgesic use compared with LC.
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Acknowledgments
The authors thank Dr. Daltro Ibiapina and all the members of the Second Surgical Clinics who assisted with the process of admission and care of our patients and to the Department of Anesthesiology for complying with the study protocol. Special thanks are extended to Dr. Lucas Prata and Dr. Rafael Diniz who assisted with the elaboration of this protocol. And finally, thanks to Dr. Nathan Bronson for the kind review of this paper.
Disclosures
Drs. Renato A. Luna, Daniel B. Nogueira, Pablo S. Varela, Eduardo de O. Rodrigues Neto, Maria Júlia R. Norton, Luciana do Carmo B. Ribeiro, Agatha M. Peixoto, Yara L. de Mendonça, Isidro Bendet, Rossano A. Fiorelli, and James P. Dolan have no conflicts of interest or financial ties to disclose.
Funding
All single-port devices were provided without cost by EDLO S/A Produtos Médicos, the IL-6 assays were performed by Sergio Franco Medicina Diagnostica laboratory at no costs for the investigator, and all of the patients were treated under the Brazilian public health system.
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Luna, R.A., Nogueira, D.B., Varela, P.S. et al. A prospective, randomized comparison of pain, inflammatory response, and short-term outcomes between single port and laparoscopic cholecystectomy. Surg Endosc 27, 1254–1259 (2013). https://doi.org/10.1007/s00464-012-2589-5
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DOI: https://doi.org/10.1007/s00464-012-2589-5