European journal of anaesthesiology
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Randomized Controlled Trial Comparative Study Clinical Trial
The effect of phenoxybenzamine on postoperative urinary complications during extradural morphine analgesia.
One hundred and fifty patients, post-Caesarean section, were investigated to evaluate the effect of epidural morphine analgesia and that of phenoxybenzamine on the frequency and extent of urinary complications. Forty patients (group A) underwent Caesarian section under general anaesthesia, while 110 patients received epidural anaesthesia. Of the latter patients, 40 received postoperative mild analgesics (group B) whilst in another 40, postoperative continuous epidural morphine was administered (group C). ⋯ The need for bladder catheterization was also increased in group B compared with group A, while in group C this increase was marked compared with both groups A and B. It was significantly less frequent in those receiving phenoxybenzamine. Phenoxybenzamine is recommended in the prevention of postoperative urinary complications associated with epidural anaesthesia and epidural morphine analgesia.