“Prehn's sign”的意思、由来-开放百科全书

词条

Prehn's sign

释义

History
References

Prehn's sign (named after urologist Douglas T. Prehn)^[1] is a medical diagnostic indicator that was once believed to help determine whether the presenting testicular pain is caused by acute epididymitis or from testicular torsion.^[2] Although elevation of the scrotum when differentiating epididymitis from testicular torsion is of clinical value, Prehn's sign has been shown to be inferior to Doppler ultrasound to rule out testicular torsion.^[3]

According to Prehn's sign, the physical lifting of the testicles relieves the pain of epididymitis but not pain caused by testicular torsion.^[4]

Negative Prehn's sign indicates no pain relief with lifting the affected testicle, which points towards testicular torsion which is a surgical emergency and must be relieved within 6 hours.

Another way to differentiate between epididymitis and torsion on physical examination is checking for the cremaster reflex which is absent in the case of torsion.

Positive Prehn's sign indicates there is pain relief with lifting the affected testicle, which points towards epididymitis.

History

It was discovered in 1934, by Douglas T. Prehn (August 1, 1901 – June 30, 1974), a prominent American urologist in Wisconsin.

References

1. ^{{cite journal|title=ABSTRACTS FROM CURRENT LITERATURE|journal=British Journal of Urology|date=March 1935|volume=7|issue=1|pages=56–76|doi=10.1111/j.1464-410X.1935.tb11273.x}}
2. ^{{Cite web|url=http://www.aafp.org/afp/990215ap/817.html |title=Diagnosis and Treatment of the Acute Scrotum - February 15, 1999 - American Academy of Family Physicians |work= |accessdate=}}
3. ^{{Cite journal|vauthors=Lavallee ME, Cash J |title=Testicular torsion: evaluation and management |journal=Curr Sports Med Rep |volume=4 |issue=2 |pages=102–4 |date=April 2005 |pmid=15763047 |doi= 10.1097/01.CSMR.0000306081.13064.a2|url=}}
4. ^{{Cite web|url=http://www.hawaii.edu/medicine/pediatrics/pedtext/s13c10.html |title=Case Based Pediatrics Chapter |work= |accessdate=2008-10-18}}

1 : Medical signs

随便看

开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。