Research Article

[Retracted] Clinical Observation of General Anesthesia Combined with Spinal Anesthesia in Elderly Patients with Chronic Obstructive Pulmonary Disease

Figure 2

Changes in MAP and HR during the perioperative period. , #, and & indicated compared with the value of the control group at T0, the value of the observation group at T0, and the value of control at the same time point, respectively.