Determining the Reliable Measurement Period for Preoperative Baseline Values With Telemonitoring Before Major Abdominal Surgery: Pilot Cohort Study

Marjolein E Haveman   ^{1, 2} , PhD ;   Rianne van Melzen   ^{1, 3} , MSc ;   Mostafa El Moumni   ³ , MD, PhD ;   Richte C L Schuurmann   ¹ , PhD ;   Hermie J Hermens   ⁴ , IR, Prof Dr ;   Monique Tabak   ^{4, 5} , IR, PhD ;   Jean-Paul P M de Vries   ¹ , MD, Prof Dr

¹ Department of Surgery, Division of Vascular Surgery, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands

² Department of Anesthesiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands

³ Department of Surgery, Division of Trauma Surgery, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands

⁴ Department of Biomedical Signals and Systems, University of Twente, Enschede, The Netherlands

⁵ eHealth group, Roessingh Research and Development, Enschede, The Netherlands