通常人们认为夏季不适合接受手术治疗，或是早上接受手术治疗可能较晚上接受手术治疗风险小。事实上，这些提法或担心并不正确。最近，来自美国的研究证实“无论是上午或下午，还是周１或周５，或是哪一个月接受手术治疗，对择期手术（elective surgery）的患者而言，其术后的并发症或死亡率并无差别”，也即手术时间并不影响手术的结果。至此，我们的风水“先生”们是不是对美国学者有意见了，因为后者得到的结果显然与风水“大师”们所鼓吹的谬论不一致，即有可能影响风水“大师”的创收或效益？

Time of Surgery Doesn't Influence Results, Study Says

You're no more likely to die if operated on at 7 p.m. versus a.m., researchers find

THURSDAY, Dec. 1 (HealthDay News) -- The timing of an operation doesn't affect a patient's subsequent risk of complications or death, a new study finds.

For example, there's no difference in death rates between elective surgery performed in the afternoon versus the morning or on Monday instead of Friday, the researchers said. Their findings should help to ease concerns that fatigue may lead to a higher rate of safety problems when operations are performed later in the day or week, they said.

The study included an analysis of the outcomes of more than 32,000 elective surgeries performed between 2005 and 2010. The overall complication rate before discharge was 13 percent, and the overall risk of death within 30 days of surgery was 0.43 percent.

After the researchers adjusted for other factors, the risk of complications or death was not significantly different for patients who had surgery at different times of the day -- between 6 a.m. and 7 p.m. -- or week.

The time of year also had no impact on the risk of complications or death. This included July and August, when most new residents start working in teaching hospitals.

The study appears in the December issue of the journal Anesthesia & Analgesia.

　　"Elective surgery thus appears to be comparably safe at any time of the workday, any day of the workweek, and in any month of the year in our teaching hospital," Dr. Daniel Sessler, of the Cleveland Clinic, and colleagues concluded in a journal news release.

Some previous studies have suggested that patients are at greater risk if they undergo late-day surgery.

SOURCE: Anesthesia & Analgesia, news release, Nov. 23, 2011