TOI was used to measure heart rate, respiration, blood pressure, heart rate variability and psychological stress. At the same time, the patient's urine protein, creatinine, urea nitrogen and other indicators were detected. According to different renal function, they were divided into observation group and control group, and 100 general inpatients with renal insufficiency were selected as positive control group. The relationship between TOI composite index and renal function in hypertensive emergency patients was compared.

TOI technique was used to measure the heart rate, respiration, blood pressure, heart rate variability, psychological pressure, etc. At the same time, the urine protein, creatinine, urea nitrogen and other results of these patients were measured. According to the different renal function, they were divided into observation group and control group, and 100 ordinary hospitalized patients with renal insufficiency were selected as positive control group. The relationship between TOI composite index and renal function in hypertensive emergency patients was compared. The data management platform provides intelligent management of patients' out-of-hospital follow-up, and the dynamic physiological indicators and psychological assessment data of patients are mastered through the hospital port, so as to provide telemedicine guidance for patients, so as to improve the prognosis of hypertensive emergency patients.

Inclusion Criteria:

• Systolic blood pressure (SBP)>180mmHg
• Diastolic blood pressure (DBP)>120mmHg

Exclusion Criteria:

• Severe head and facial skin injury
• Cerebral hemorrhage or severe shock after admission
• Patients who insist on refusing to participate in this clinical tria
• Patients who could not participate in the study for other reasons.

Patients hospitalized for acute hypertension from January 2022 to December 2024 with onset time <48 hours and blood pressure measured by standard sphygmomanometer: Systolic blood pressure (SBP)>180mmHg and/or diastolic blood pressure (DBP)>120mmHg, age >18 years old, gender, stable vital signs, good compliance, complete and reliable medical records.