Evaluation of Bluetooth temperature sensors for red blood cell product storage

Abstract

Introduction: Blood products for transfusion need to be stored in dedicated refrigerators equipped with self-recording temperature gauges and alarms. Centralized management within the transfusion department is essential, as this is a mandatory requirement for transfusion service accreditation and a common area of scrutiny during audits. In this study, we aimed to assess the utility of Bluetooth-enabled temperature and humidity sensors for red blood cell product temperature management. Methods: We utilized the BLE temperature sensor BST-01A (manufactured by LIMNO) and the obniz BLE/Wi-Fi Gateway (provided by Encored Japan). These sensors were installed in operating rooms, patient wards, and the transfusion department to evaluate their suitability for remote monitoring. Additionally, we placed BLE temperature sensors in transport bags to verify their effectiveness in temperature management during blood product transportation. Results: By connecting the gateway to the hospital’s Wi-Fi network, we successfully monitored the temperature of refrigerators in patient wards. Real-time observations included abnormal temperature readings, detection status, and remaining battery levels. Furthermore, placing BLE temperature sensors inside transport bags allowed us to track temperature fluctuations during transportation. Discussion: The use of BLE temperature sensors for red blood cell product temperature management is valuable, enabling more robust control. Recent research has explored electronic cooling-based blood transport systems (such as blood rotation) for effective blood product utilization, especially in remote or island regions. BLE sensors offer cost-effectiveness and compactness, making them a promising option for recording temperatures during transportation.