This study is an exploratory clinical study to observe the improvement of lung function before and after the treatment by human umbilical cord-derived mesenchymal stem cells, and the purpose is to evaluate the safety and effectiveness of human umbilical cord-derived mesenchymal stem cells on non-cardiac surgery-induced lung injury in patients with ischemic heart disease.~The study is a randomized parallel controlled study. The research process is as follows: 1. Sixteen eligible patients with ischemic heart disease were recruited, fully informed, and signed a consent form, and randomly divided into placebo control group (n=8) or hUC-MSCs treatment group (n=8); 2. Knee replacement was performed under general anesthesia in both groups. In the cell therapy group, 1×10^6/kg human umbilical cord-derived mesenchymal stem cells were intravenously injected to the patient immediately after the surgery and at day 3 after the surgery. Before the operation, 6 hours, 3 days, 7days, 14 days, and 28 days after the MSCs injection, all patients receive a review of which main content includes symptom improvement, lung function improvement, and adverse events.
This study is an exploratory clinical study to observe the improvement of lung function before and after the treatment by human umbilical cord-derived mesenchymal stem cells, and the purpose is to evaluate the safety and effectiveness of human umbilical cord-derived mesenchymal stem cells on non-cardiac surgery-induced lung injury in patients with ischemic heart disease. The study is a randomized parallel controlled study. Patients receive a review of which main content includes symptom improvement, lung function improvement, and adverse events.