• Eveline H J Mestrom, Jonna A van der Stam, Simon W Nienhuijs, de HinghIgnace H J TIHJTDepartment of Surgery, Catharina Hospital, Eindhoven, The Netherlands.GROW - School for Oncology and Developmental Biology, Maastricht University, Maastricht, The Netherlands., Arjen-Kars Boer, van RielNatal A WNAWDepartment of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands.Expert Center Clinical Chemistry Eindhoven, Eindhoven, The Netherlands.Department of Vascular Medicine, Amsterdam University Medical C, Volkher Scharnhorst, and R Arthur Bouwman.
• Department of Electrical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands. eveline.mestrom@catharinaziekenhuis.nl.
• J Clin Monit Comput. 2024 Feb 1; 38 (1): 147156147-156.

PurposeThis study aimed to describe the 24-hour cycle of wearable sensor-obtained heart rate in patients with deterioration-free recovery and to compare it with patients experiencing postoperative deterioration.MethodsA prospective observational trial was performed in patients following bariatric or major abdominal cancer surgery. A wireless accelerometer patch (Healthdot) continuously measured postoperative heart rate, both in the hospital and after discharge, for a period of 14 days. The circadian pattern, or diurnal rhythm, in the wearable sensor-obtained heart rate was described using peak, nadir and peak-nadir excursions.ResultsThe study population consisted of 137 bariatric and 100 major abdominal cancer surgery patients. In the latter group, 39 experienced postoperative deterioration. Both surgery types showed disrupted diurnal rhythm on the first postoperative days. Thereafter, the bariatric group had significantly lower peak heart rates (days 4, 7-12, 14), lower nadir heart rates (days 3-14) and larger peak-nadir excursions (days 2, 4-14). In cancer surgery patients, significantly higher nadir (days 2-5) and peak heart rates (days 2-3) were observed prior to deterioration.ConclusionsThe postoperative diurnal rhythm of heart rate is disturbed by different types of surgery. Both groups showed recovery of diurnal rhythm but in patients following cancer surgery, both peak and nadir heart rates were higher than in the bariatric surgery group. Especially nadir heart rate was identified as a potential prognostic marker for deterioration after cancer surgery.© 2023. The Author(s).

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