[Design and application method of brachial artery blood flow cuff during cardiopulmonary resuscitation]

Monitoring the quality of cardiopulmonary resuscitation (CPR) in patients with cardiac arrest remains challenging in emergency and resuscitation processes. Achieving seamless integration between different links in the chain of survival and maintaining high-quality chest compressions while rapidly assessing the perfusion status of vital organs is crucial for evaluating the effectiveness of CPR and predicting patient outcomes. Current CPR quality monitoring primarily includes the assessment of CPR technique and the monitoring of circulation in patients with cardiac arrest. However, the indicators of compression effectiveness do not objectively reflect peripheral perfusion status. In the fast-paced environment of emergency care, quickly assessing the effectiveness of CPR and related tissue perfusion and accurately identifying the patient's status of spontaneous circulation is of significant importance. To address this, the medical staff of The First Affiliated Hospital of Huzhou Normal University has designed a brachial artery blood flow cuff during CPR and has obtained a National Utility Model Patent of China (ZL 2019 2 1478870.4). The brachial artery blood flow cuff during CPR comprises a blood pressure monitoring cuff, a dual fixation mechanism, an ultrasound blood flow measurement probe, and an integrated signal acquisition and display system. Its velcro-and-hook dual-fixation design ensures stability and reliability of cuff during emergency procedures. The long probe covers the antecubital fossa, enabling rapid and accurate acquisition of blood flow signals. The signal receiver and display screen provide real-time visualization of the blood flow waveform, which can, to some extent, indirectly reflect intracranial arterial hemodynamics. The brachial artery blood flow cuff during CPR can monitor CPR-related forward blood flow and perfusion of vital organs, thereby guiding high-quality CPR and rapidly assessing the patient's circulatory status during resuscitation. It offers the advantages of rapid and secure fixation, easy operation, and clear interpretation of results, showing good clinical application value.