Group 1 - The standard cuff for blood pressure measurement is suitable for arm circumferences between 22 to 32 centimeters, and larger or smaller cuffs should be chosen for those outside this range [2] - Blood oxygen saturation measurement using pulse oximeters can be affected by nail polish and manicures, potentially impacting accuracy [2] - Blood glucose test strips should be used within three months after opening, as moisture can lead to inaccurate readings [2] Group 2 - Sleep monitoring devices, such as wristbands, can reflect trends in deep sleep, light sleep, and wakefulness, but their accuracy is influenced by environmental factors, wearing methods, and sensor precision, making them less reliable than professional equipment [3] - Physiological fluctuations in health indicators mean that a single poor measurement should not cause excessive anxiety [3] - The critical time for performing CPR after cardiac arrest is within 4 to 6 minutes, highlighting the importance of timely intervention [3]

Group 1 - The core viewpoint of the article emphasizes that wearable devices, while useful for daily health monitoring, should not be relied upon for disease diagnosis or treatment [1] - Wearable devices like sleep monitoring bands estimate sleep stages based on physical activity, blood oxygen levels, and heart rate, but lack the precision of professional medical equipment [1] - Misinterpretation of data from these devices can lead to unwarranted self-diagnosis of conditions such as "sleep disorders," which is considered hasty [1]

Core Viewpoint - The rise of wearable devices has increased their popularity for health monitoring, but they should not be used as substitutes for professional medical diagnosis and treatment [2][3]. Group 1: Wearable Device Functionality - Wearable devices, such as smartwatches and fitness bands, offer features like heart rate, blood oxygen saturation, and sleep monitoring for daily health management [2]. - These devices primarily serve for self-monitoring in daily life and cannot replace professional medical examinations [2][3]. Group 2: Limitations of Wearable Devices - The accuracy of wearable devices is limited due to environmental factors, wearing methods, and sensor precision, which prevents them from achieving the accuracy of professional medical equipment [2][3]. - Users should not make health diagnoses based solely on the data from these devices, as physiological indicators like blood pressure and blood sugar naturally fluctuate [2][3]. Group 3: Health Monitoring and Lifestyle Guidance - Wearable devices can help users assess their health status and alert them to potential health risks, promoting a healthier lifestyle [3]. - Significant changes in monitored health indicators should prompt users to seek professional medical evaluation [3].