Nursing measures for the client who has had an MI include helping the client to avoid activity that results in Valsalva’s maneuver. Valsalva’s maneuver may cause cardiac dysrhythmias, increased venous pressure, increased intrathoracic pressure, and thrombi dislodgment. Which of the following actions would help prevent Valsalva’s maneuver
A. Have the client drink fluids through a straw.
B. Have the client avoid holding her breath during activity.
C. Have the client assume a side-lying position.
D. Have the client clench her teeth while moving in be
参考答案：B
解析：Valsalva’s maneuver, or bearing down against a closed glottis, can best be prevented by instructing the client to exhale during activities such as having a bowel movement or moving around in bed.