En Passant

En Passant

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• Apparently it is not uncommon to Talk about unsafe sex. The male treat patients with pavement bums in Australian redback spider has no the Burn Center of Phoenix, Arizona choice (Time 15.1.96). During (Ann Emerg Med 1995;26:563). This intercourse, the much smaller male prompted a study of pavement temis invariably eaten by the female peratures in Phoenix. In the summer while basking in the post-coital months between 10:00 a.m. and 5:00 glow. Enough to make any male just p.m., the pavement is so hot that say no. contact of 35 seconds will cause secA Russian physician-cosmonaut, ond degree burns. Asphalt and sand after spending 438 days aboard a reached 68°C and cement 60°C. The space station without fe male compaauthors wisely concluded that "no ny, has changed his mind about one should be allowed to remain in women (Halifax Chronicle Herald T.F. Baskett, MB, FRCSC, Department of Obstetrics and contact with hot pavement even 27.11.95). Previously he regarded Gynaecology, Dalhousie University transiently." lt could also be the them as too "hysterieal" for space cause of the high stepping gait missions. After 438 days in space among those who venture out in the midday sun. without them, he has decided they could be "very good work partners." • In 1828, Ferdinand August Maria Franz von Ritgen described his manoeuvre for delivering the fetal head The origins of photography are discussed in arecent over the maternal perineum with minimal trauma. artieie (The Beaver 1996;75:11). Years of research By 1855, he was so impressed with his technique and by Louis Jacques Mande Daguerre, a prominent results that he wrote what would nowadays be ca lied French artist, culminated in the capture of images on an educational objective. The language he used was a silver plate. This was first reported to l'Acadamie direct and undiluted by jargon or modesty: May every des Sciences in Paris on January 7,1839. The process teacheT of midwives study most caTefully the success of became known as the "daguerreotype." Most of the these two manoeuvres and then ask hirnself in full conearly images were of inanimate objects, as the subscience WhetheT it is not his sacred duty to instruct his stuject had to remain stationary for several minutes. dentsin thern and to prevent the graduation oi any who Human portraits required a sustained sphinx-like da not have sufficient experience in thern. pose. Thus, early on, many of the portraits were taken of the relatively or completely immobile, "siek • Presumably after some trial and error, the US Parks Service has worked out how to get rid of large dead or recently deceased persons." animals from recreational areas. Apparently it takes A survey of studies on labour and birth in water has nine kg of explosive to "dispose" of a carcass but 25 been published (J R Soc Med 1995;88:719). In two kg to "obliterate" it. They have also learned a vital small trials, one showed prolongation of labour and safety tip: to remove a11 horseshoes before igniting the other did not. There was no difference in analgesia requirements and the Apgar scores were the explosive (Globe and MaiI16.1.96). unchanged. Post-partum haemorrhage and episioto• A review article asks the quest ion: "00 patients premy rates in primigravidas were reduced. fer women doctors?" Oata from Britain, Europe, and North America a11 show that women, especia11y in The pernicious habit of routine manual removal of the placenta at the time of Caesarean section is not general practiee and gynaecology, prefer female doctors (Br J Obstet Gynaecol 1996;103:2). The only unnecessary but potentially harmful (Obstet GynecolI996;87:99). A prospective randomized trial reviewers fee! that much more research is needed and that the training of doctors ofboth sexes should has shown that manual extraction of the placenta is be improved. Still, the practical implications for associated with a significantly greater risk of postCaesarean endometritis than that observed with young medical graduates in their choiee of specialty assisted spontaneous placental de!ivery. are quite dear.

JOURNAL SOGe

624

JUNE 1996