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Carbon dioxide absorption during retroperitoneoscopic adrenalectomy: comparison between monolateral and synchronous bilateral approaches

  • Valter Perilli
  • Paola Aceto
  • Giovanni Punzo
  • Celestino Pio Lombardi
  • Rocco Bellantone
  • Liliana Sollazzi
Original Article
  • 4 Downloads

Abstract

Synchronous posterior retroperitoneoscopic bilateral adrenalectomy (PR-BilA) is a novel technique proposed for the definitive cure of hypercortisolism when a surgical approach is indicated. The aim of the present prospective cohort study was to compare the carbon dioxide (CO2) absorption in patients undergoing PR-BilA with those undergoing single posterior retroperitoneoscopic adrenalectomy (PRA). Twenty-nine patients undergoing PR-BilA or PRA were consecutively enrolled. Anaesthesia was standardised. In both groups, CO2 elimination (VCO2), CO2 dissolved in arterial blood (PaCO2), end-tidal CO2 (EtCO2), and volume per minute (VM) were measured at the following time points: after anaesthesia induction and before CO2 insufflation (T1), 5 min after CO2 insufflation (T2), at the time of maximum VCO2 (T3), and at desufflation (T4). VCO2 was continuously measured using a metabolic monitor. ANOVA for repeated measures was used for statistical analysis. With respect to VCO2, a significant group × time interaction was found (p = 0.03). Post hoc analysis revealed that VCO2 was significantly increased at T4 compared with T1 in both groups (p = 0.02 and p = 0.0001 in the PRA and PR-BilA groups, respectively). Regarding PaCO2, ANOVA analysis showed a significant group effect (p = 0.01), with higher values in the PR-BilA group. EtCO2 and VM did not differ between the two groups. We found that the CO2 absorption was increased in both groups at the end of surgery, in the presence of a higher trend in PaCO2 values during PR-BilA. Therefore, PR-BilA may be considered a safe surgical approach with respect to CO2 absorption, when a mild degree of hypercapnia may be accepted.

Keywords

Carbon dioxide absorption Retroperitoneoscopic adrenalectomy Hypercapnia Monitoring Safety 

Notes

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflicts of interest. This research received no specific grant from any funding agency in the public, commercial, or not-for-profit sectors.

Research involving human participants and/or animals

The present manuscript is in compliant with ethical standard. This article does not contain any studies with animals performed by any of the authors.

Informed consent

Informed consent was obtained from all the patients included in the study.

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Copyright information

© Italian Society of Surgery (SIC) 2018

Authors and Affiliations

  1. 1.Department of Anaesthesiology and Intensive Care MedicineFondazione Policlinico Universitario A. Gemelli IRCCSRomeItaly
  2. 2.Università Cattolica del Sacro CuoreRomeItaly
  3. 3.Division of Endocrine and Metabolic Surgery, Department of SurgeryFondazione Policlinico Universitario A. Gemelli IRCCSRomeItaly

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