Copeptin and the syndrome of inappropriate antidiuresis (SIAD) after pituitary transsphenoidal surgery

Author:

Efthymiadis Agathoklis1ORCID,Pofi Riccardo1,Rostom Hussam2,James Tim2,Shine Brian2,Guha Nish2,Cudlip Simon3,Christ‐Crain Mirjam4,Pal Aparna1

Affiliation:

1. Oxford Centre for Diabetes, Endocrinology and Metabolism Oxford University Hospitals NHS Foundation Trust Oxford UK

2. Department of Clinical Biochemistry John Radcliffe Hospital Oxford UK

3. Department of Neurosurgery Oxford University Hospitals NHS Foundation Trust Oxford UK

4. Division of Endocrinology, Diabetes and Metabolism University Hospital Basel Basel Switzerland

Abstract

AbstractObjectiveThis study evaluates the predictive value of copeptin for syndrome of inappropriate antidiuresis (SIAD) postpituitary transsphenoidal surgery (TSS).DesignData from 133 consecutive patients undergoing TSS (November 2017–October 2022) at Oxford University Hospitals NHS trust are presented in this retrospective study.MethodsLogistic regression (LR) and receiver operating characteristic (ROC) curves were performed to evaluate the diagnostic utility of copeptin. The Mann–Whitney U test was used to compare copeptin levels between the SIAD and no SIAD groups.ResultsFourteen patients (10.8%) developed SIAD. Copeptin was available in 121, 53 and 87 patients for Days 1, 241 and 8 post‐TSS, respectively. LR for Day 1 copeptin to predict SIAD gave an odds ratio (OR) of 1.0 (95%CI 42 0.84–1.20, p = .99), area under‐ROC curve (AUC) was 0.49; Day 2 copeptin OR was 0.65 (95%CI 0.39–1.19, 43 p = .77), AUC was 0.57 LR for Day 1 sodium to predict SIAD gave an odds ratio (OR) of 1.0 (95%CI 0.85–1.21, p = .99), AUC was 0.50.ConclusionsIn conclusion, our data provide no evidence for copeptin as a predictive marker for post‐TSS SIAD.

Publisher

Wiley

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