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31.
A Ascari‐Raccagni A Dondas MG Righini G Trevisan 《Journal of the European Academy of Dermatology and Venereology》2010,24(8):926-929
Background The repair of an alar nasal defect is a frequent challenge for dermatologic surgeons for reasons of the high rate of non‐melanoma cancers in the area. Objective Our aim was to describe the use of an east–west cheek‐based flap (horizontal advancement flap) to repair a surgical defect on the nose ala. Methods Benefits and limits of this surgical procedure are evaluated. Result The resulting S‐shaped scar was well‐camouflaged among the natural skin lines (melolabial fold and melonasal junction). No architectural distortion of the nose resulted from the procedure. Conclusion In selected patients with small‐to‐medium‐size defects of the nasal ala, the horizontal advancement flap is a simple, reliable and aesthetic reconstruction option. 相似文献
32.
DG Ranatunga MG Richardson DM Brooks 《Journal of Medical Imaging and Radiation Oncology》2007,51(2):182-185
Knotting of intravascular catheters is an uncommon but a well‐recognized occurrence. The Swan–Ganz catheter (SGC) is the one that knots most commonly. A case of a knotted SGC is described in a patient with a persistent left‐sided superior vena cava, and we propose that the presence of a left‐sided superior vena cava is a risk factor for knot formation not previously reported. We review the published work on the risk factors for knot formation and on the techniques used to remove knotted SGC. We describe a technique using a gooseneck snare and Omni Flush catheter (Angiodynamics, Queensbury, NY, USA) to loosen and untie a knotted SGC. 相似文献
33.
M Stronati MG Revello RM Cerbo M Furione G Rondini G Gerna 《Acta paediatrica (Oslo, Norway : 1992)》1995,84(3):340-341
34.
35.
Broeders MA Tangelder GJ Slaaf DW Reneman RS oude Egbrink MG 《Arteriosclerosis, thrombosis, and vascular biology》2002,22(4):680-685
We investigated in vivo the effect of cholesterol diet-induced hypercholesterolemia (HC) on thromboembolism in nonatherosclerotic rabbit mesenteric arterioles and venules (diameter 21 to 45 micrometer). After mechanical vessel wall injury, the ensuing thromboembolic reaction was studied by intravital videomicroscopy. A dramatic prolongation of embolization duration (median >600 seconds) was observed in the arterioles of the HC group compared with the arterioles of a normal chow-fed (NC) control group (142 seconds, P<0.0001); concomitantly, relative thrombus height increased (thrombus height/vessel diameter was 68% for the HC group and 58% for the NC group; P<0.05). By contrast, in venules, cholesterol did not affect embolization duration (42 seconds for HC group, 34 seconds for NC group) and thrombus height (66% for HC group, 64% for NC group). Furthermore, the role of endothelial NO synthesis was studied. In arterioles, stimulation of endogenous NO synthesis through mesenteric superfusion of L-arginine (1 mmol/L) completely reversed cholesterol-enhanced embolization (152 seconds) but did not influence thrombus height (63%). L-Arginine had no effect in venules of the HC group (51 seconds) and nor in the arterioles and venules of the NC group (177 seconds for arterioles, 43 seconds for venules). This study indicates that hypercholesterolemia selectively enhances thrombus formation and embolization in arterioles but not in venules and that stimulation of endogenous NO production antagonizes this enhancement of arteriolar thromboembolism. 相似文献
36.
KP Morris JR Skinner C Wren S Hunter MG Coulthard 《Archives of disease in childhood》1993,68(5):637-643
Thirteen anaemic children on dialysis were assessed to determine the incidence of cardiac changes in end stage renal failure. Nine children had an increased cardiothoracic ratio on radiography. The electrocardiogram was abnormal in every case but no child had left ventricular hypertrophy as assessed by voltage criteria. However, left ventricular hypertrophy, often gross, was found on echocardiography in 12 children and affected the interventricular septum disproportionately. Cardiac index was increased in 10 patients as a result of an increased left ventricular stroke volume rather than heart rate. Left ventricular hypertrophy was significantly greater in those on treatment for hypertension and in those with the highest cardiac index. Abnormal diastolic ventricular function was found in 6/11 children. Children with end stage renal failure have significant cardiac abnormalities that are likely to contribute to the high cardiovascular mortality in this group. Anaemia and hypertension, or its treatment, probably contribute to these changes. Voltage criteria on electrocardiogram are of no value in detecting left ventricular hypertrophy. Echocardiography must be performed, with the results corrected for age and surface area, in order to detect and follow these abnormalities. 相似文献
37.
38.
François M.H. van Dielen Harrie A.J.M. Kurvers Ruben Dammers Mirjam G.A. oude Egbrink Dick W. Slaaf Jan H.M. Tordoir Peter J.E.H.M. Kitslaar 《World journal of surgery》1998,22(8):807-811
p
< 0.05), NSBF (
p
< 0.05), and SO (
p
< 0.05) were found to be drastically reduced at day 2 after ligation compared to preligation values. This reduction partially
recovered during the following weeks. TSBF (
p
< 0.05) and NSBF (
p
< 0.05), however were still reduced at day 28 after ligation compared to preligation values, whereas the SO at this time
tended to be lower (
p
= 0.11). In the sympathectomy group the TSBF was found to be increased at day 2 (
p
< 0.05) and day 28 (
p
< 0.05) after sympathectomy, both compared to values obtained at day 28 after ligation. Sympathectomy did not have an effect
on NSBF and SO. The sham procedure had no effect on the TSBF, NSBF, or SO. These results indicate that in case of lower limb
ischemia, sympathectomy improves skin blood flow at the thermoregulatory but not the nutritive level of skin microcirculation.
This may be related to the fact that the thermoregulatory vessels are mainly sympathetically controlled, whereas the nutritive
capillaries are mainly controlled by local (nonneural) factors. 相似文献
39.
Between June 1986 and April 1988, 86 sonographic examinations of the shoulder were performed on patients suspected of having rotator cuff tears. Major sonographic diagnostic criteria included (a) a well-defined discontinuity usually visible as a hypoechoic focus within the cuff, (b) nonvisualization of the cuff and (c) an echogenic focus within the cuff. Seventy-five patients underwent both sonography and arthrography. Compared with arthrography alone, ultrasound examinations enabled detection of 92% of rotator cuff tears (24 of 26 tears), with a specificity of 84% and a negative predictive value of 95%. Correlation was obtained in 30 of these patients who underwent surgery for rotator cuff tear or other soft-tissue abnormality. In this group, the sensitivity of sonography for detection of a tear was 93%, with a specificity of 73%, while for arthrography sensitivity was 87% and specificity was 100%. These data indicate that sonography is a useful, noninvasive screening procedure for patients suspected of having rotator cuff injury. 相似文献
40.
Computed tomography of the pancreas 总被引:2,自引:0,他引:2