A client with a spinal cord injury and subsequent urine retention receives intermittent catheterization every 4 hours. The average catheterized urine volume has been 550mL. What should the nurse do

A. Increase the frequency of the catheterizations.
B. Insert an indwelling urinary catheter.
C. Place the client on fluid restrictions.
D. Use a condom catheter instead of an invasive on

患者男，50岁。持续性腹痛，腹胀，呕吐，无肛门排气排便2天入院。查体：体温37.6℃，脉搏116次/分，呼吸28次/分，血压85/60mmHg。痛苦面容，精神萎靡，少气懒言，表情淡漠。皮肤弹性差、静脉萎陷。实验室检查：Hb63g/L，血清钠130mmol/L，钾3mmol/L，CO₂CP19mmol/L。

目前的治疗措施中，首要的是（）

A.输血

B.纠正体液代谢失调

C.全身应用抗生素

D.急诊手术，解除肠梗阻

E.抗休克，补充血容量