Different forms of anesthesia, different injection methods, etc.

1. Different forms of anesthesia: Intravenous anesthesia is a type of anesthesia in general anesthesia. Spinal anesthesia, also known as spinal anesthesia, is a type of local anesthesia and is often used for hemigeneral anesthesia.

2. Different injection methods: Intravenous anesthesia is the intravenous injection of general anesthetics with intravenous properties into the patient's blood, and reaches the patient's brain through blood circulation, exerting an effect on the patient's central nervous system, causing the Produces the effect of general anesthesia. Spinal anesthesia mainly involves injecting local anesthetic drugs from the patient's back, that is, into the spinous process space of the spine, into the epidural space or subarachnoid space within the spinal canal, which acts on the spinal nerve roots, thereby achieving the effect of local anesthesia.