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1.
Haemodilution induces a hypercoagulable state 总被引:10,自引:3,他引:7
It has been suggested that haemodilution with saline may increase whole
blood coagulation. This study was conducted in two parts. First, we
investigated the effect of in vitro dilution of blood with saline on whole
blood coagulation as measured by the thrombelastogram (TEG). Blood (4 ml)
was diluted with 0.9% saline 1 ml and coagulation compared with that of an
undiluted control specimen obtained concurrently from the same subject. In
the second part, the study was repeated using a modified gelatin colloidal
solution (Haemaccel) as the diluent. The r time, k time and r + k time were
decreased relative to control in both diluent groups. The alpha angles were
increased compared with control in both groups while maximum amplitude was
unchanged in the Haemaccel diluted group. We conclude that haemodilution
per se increases the coagulability of whole blood in vitro, but that saline
haemodilution has a more marked effect on final clot strength.
相似文献
2.
J J Viljoen L S Wessels 《South African journal of surgery. Suid-Afrikaanse tydskrif vir chirurgie》1990,28(4):133-137
Over an 8-year period (1982-1989) 43 patients with subacute and chronic extradural haematomas were treated. The clinical picture of the patients, computed tomography (CT) as well as operative findings and prognosis were evaluated. The radiological picture as seen on CT was correlated with the time interval elapsing between initial trauma and surgery. Operative findings are discussed and the terms 'subacute' and 'chronic' are defined. 相似文献
3.
4.
Widespread epiphyseal stippling was demonstrated radiologically during the early months of life in 7 children with acrodysostosis. This finding, which does not seem to have been previously documented in this disorder, is important in the differential diagnosis. 相似文献
5.
A 20-year-old woman with Beckwith-Wiedemann syndrome (BWS) was ultrasonographically appraised at intervals during her pregnancy. Unequivocal evidence for a diagnosis of BWS was obtained in the fetus and this was confirmed postnatally. Early ultrasound diagnosis enabled appropriate genetic counselling to be given; neonatal complications, such as hypoglycaemic episodes, were prevented. 相似文献
6.
Alpha-glucosidase activity and sperm motility 总被引:2,自引:0,他引:2
We correlated the activity of alpha-glucosidase in seminal plasma with the motility and differential motility of sperm. Significant positive correlations were found between the alpha-glucosidase activity and both motility and the percentage sperm with good forward progression. This supports the use of alpha-glucosidase in semen as a marker of epididymal function and specifically of the development of motility. 相似文献
7.
We describe an 18-month-old boy with Costello syndrome (CS) with proven partial growth hormone (GH) deficiency and hypoglycemic episodes. The hypoglycemia is deemed to be due to cortisol deficiency. This report represents the second published case of cortisol deficiency in the CS. A brief review of the endocrine disturbances in the syndrome is provided. We highlight the need for careful endocrinological evaluation of individuals with CS. 相似文献
8.
Sixty-four patients with pseudoxanthoma elasticum (PXE) were investigated in a nationwide study within South Africa and Zimbabwe. Thirty-nine individuals formed a distinct clinical subgroup. These persons were found exclusively among people of Afrikaner descent, whose origins are mainly derived from Dutch and French-Huguenot stock. This disorder was inherited as an autosomal recessive trait and presented mild to moderate cutaneous and cardiovascular manifestations. However, after the third decade of life severe visual impairment developed and culminated in blindness in 8 people by the age of 50. The cause of the visual defect was progressive extension of angioid streaks into the macula with neovascularization and haemorrhage. Laser therapy may have prevented further bleeding in 4 instances. The severity of ocular involvement contrasted with the mildness of the skin changes, and in this respect the condition seems to differ from previously delineated autosomal recessive forms of PXE. 相似文献
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10.
Tania S. Douglas Ernesta M. Meintjes Christopher L. Vaughan Denis L. Viljoen 《American journal of human biology》2003,15(4):573-578
Photogrammetry has been used as an alternative to direct measurements to obtain facial distances for a variety of anthropometric applications. Taking measurements from photographs is less intrusive to subjects and reduces screening time, but measurements from single frontal photographs neglect depth information and may be inadequate for screening purposes. This study examined the role of depth in measurements of palpebral fissure length, interpupillary distance, inner canthal distance, and outer canthal distance using single‐ and stereo‐photogrammetry; an operator selected landmarks on single and stereo digital photographs displayed on a computer monitor. Depth was not found to make a significant contribution to eye distances in an idealized system where the real‐world coordinates of points on the eye were known from three‐dimensional calibration of stereo photographs. However, the differences found between measurements taken from single frontal photographs and those from stereo‐photogrammetry indicated that measurements from single photographs are prone to errors due to misalignment of the camera, the face, and the calibration instrument during image acquisition; if single photographs are to be used, the placement of these components should be carefully monitored. Am. J. Hum. Biol. 15:573–578, 2003. © 2003 Wiley‐Liss, Inc. 相似文献