600
Participants
Start Date
October 8, 2019
Primary Completion Date
September 30, 2020
Study Completion Date
October 30, 2020
intravenous sufentanil
The PCA pumps contain sufentanil . And the pump is connected to participants intravenously .
subcutaneous sufentanil
The PCA pumps contain sufentanil. And the pump is connected to participants subcutaneously.
intravenous hydromorphone
The PCA pumps contain hydromorphone. And the pump is connected to participants intravenously .
subcutaneous hydromorphone
The PCA pumps contain hydromorphone. And the pump is connected to participants subcutaneously.
intravenous sufentanil and dexmedetomidine
The PCA pumps contain sufentanil and dexmedetomidine. And the pump is connected to participants intravenously .
subcutaneous sufentanil and dexmedetomidine
The PCA pumps contain sufentanil and dexmedetomidine. And the pump is connected to participants subcutaneously.
intravenous hydromorphone and dexmedetomidine
The PCA pumps contain hydromorphone and dexmedetomidine. And the pump is connected to participants intravenously.
subcutaneous hydromorphone and dexmedetomidine
The PCA pumps contain hydromorphone and dexmedetomidine. And the pump is connected to participants subcutaneously
The First Affiliated Hosipital of China Medical University, Shenyang
Jun Wang
OTHER