What are the domestic and international EMC (electromagnetic compatibility) standards for multi-parameter monitors?

Multi-parameter monitors integrate multiple physiological parameters, including electrocardiogram (ECG), blood oxygen saturation (SpO2), non-invasive blood pressure (NIBP), respiration, and body temperature. Their EMC standards comply with GB 9706.1, YY 0505 (domestic), and IEC 60601-1-2 (international). Their complexity stems from the simultaneous presence of microvolt-level analog signals (ECG), photoelectric signals (SpO2), a pneumatic pump motor (NIBP), and a digital processing unit, which can potentially interfere with each other. The standards strictly require each monitoring module to operate continuously and accurately under strong radio frequency fields (e.g., in an operating room electrosurgical unit) without false alarms or data loss.