VOCs in Patients With Acute Cardiogenic Chest Pain

Inclusion Criteria: Observation group inclusion criteria: 1. Over 18 years old, male or female; 2. Patients with acute cardiogenic chest pain (see diagnostic criteria); 3. Patient\'s informed consent. Inclusion criteria of healthy control group: 1. Over 18 years old, male or female; 2. Centerless cerebrovascular disease, lung disease, no abnormal liver and kidney function, no acute infection recently; 3. Informed consent. Exclusion Criteria: 1. The patient had difficulty in collecting breath; 2. Patients with terminal illness or receiving palliative care; 3. Have participated in other clinical studies or consider it inappropriate to participate in this study.