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排序方式: 共有855条查询结果,搜索用时 15 毫秒
761.
Manipulation of CT data for temporal-bone imaging 总被引:1,自引:0,他引:1
762.
763.
Embolization in cataclysmal hemorrhage caused by squamous cell carcinomas of the head and neck 总被引:2,自引:0,他引:2
Cataclysmal hemorrhage occurred in eight patients with known aggressive squamous cell tumors of the head and neck. Angiography showed neovascularity, narrowing, beading of affected arteries, and pseudoaneurysms. Postembolization residual stump formation was seen in a few patients. A total of 11 embolization procedures were performed in these eight patients. Embolization materials included polyvinyl alcohol, isobutyl-2-cyanoacrylate, and detachable balloons. Survival times ranged from 5 to 274 days, with no deaths as a direct result of hemorrhage. Only one severe complication following embolization was noted. 相似文献
764.
Thrombin generation in acute promyelocytic leukemia 总被引:3,自引:0,他引:3
Six patients with disseminated intravascular coagulation (DIC) in association with acute promyelocytic leukemia (APL) were studied with sensitive radioimmunoassays that are able to quantitate the extent of thrombin generation within the human circulation. The levels of prothrombin activation fragment, F1 + 2, and thrombin-antithrombin complex (TAT) were obtained at clinical presentation and were then followed serially in several patients during induction chemotherapy. The antileukemic therapy often resulted in a rise in the plasma levels of these molecular species. Simultaneous measurements of fibrinopeptide A (FPA) were also obtained, and the concentrations of this polypeptide were correlated with the levels of F1 + 2 and TAT in patients who were not receiving heparin. Nine individuals with other morphological subtypes of acute nonlymphocytic leukemia (ANLL) were investigated and were usually found to have increased levels of F1 + 2, TAT, and FPA at clinical presentation. However, the magnitude of the elevations was considerably greater and the correlation between TAT and FPA levels was stronger in APL than in ANLL. These studies provide direct evidence that patients with APL, as well as ANLL, generate excessive amounts of thrombin within their vascular system. Furthermore, the data suggest that the concentrations of F1 + 2, compared with the levels of FPA, may be a more sensitive indicator of hemostatic system hyperactivity in individuals with DIC. 相似文献
765.
766.
Diurnal variations in calcium and magnesium excretion in man 总被引:1,自引:0,他引:1
767.
768.
Pregnancy after transfer of embryos which were generated from in-vitro matured oocytes 总被引:2,自引:6,他引:2
Jaroudi KA; Hollanders JM; Sieck UV; Roca GL; El-Nour AM; Coskun S 《Human reproduction (Oxford, England)》1997,12(4):857-859
In-vitro maturation of human oocytes is an important technique in assisted
reproduction due to its potential for reducing the use of fertility drugs.
We offered this technique as an alternative to cancelling the cycle to a
patient who was at risk of ovarian hyperstimulation syndrome (OHSS) after
treatment with gonadotrophin- releasing hormone analogue (GnRHa) and human
menopausal gonadotrophin (HMG). The patient had 40 visible antral follicles
with a maximum diameter of 13 mm and an oestradiol concentration of 14,000
pmol/l on cycle day 12. Immature oocytes were aspirated transvaginally
under ultrasound guidance. Ten cumulus-enclosed oocytes were harvested and
nine of them completed nuclear maturation to metaphase II after 48 h in
culture. By 18 h after an intracytoplasmic sperm injection (ICSI)
procedure, seven of these metaphase II stage oocytes displayed two distinct
pronuclei and two polar bodies. All fertilized oocytes but one underwent
cleaveage; four of these were transferred 2 days later. Endometrial priming
was initiated with 8 mg oestradiol valerate daily from the day of oocyte
retrieval and 50 mg progesterone was injected i.m. daily starting 2 days
after that. A single intrauterine sac was seen containing one fetus with
positive fetal heart beat on ultrasound at 7 weeks of gestation.
Unfortunately, the pregnancy ended at 24 weeks shortly after premature
rupture of membranes; a live healthy-looking girl was delivered who died 18
days later.
相似文献
769.
770.