1/141. Recurrent pulmonary emboli and thrombus attached to a permanently implanted pacemaker wire in pregnancy.We present a case of pacer wire thrombus and recurrent pulmonary emboli in pregnancy associated with a permanent pacemaker. Transthoracic echocardiography demonstrated a thrombus attached to the pacer wire at the point where it crossed the tricuspid valve. After the uncomplicated vaginal delivery, thrombolytic therapy was given. This thrombus persisted despite thrombolytic therapy. Consequently, the patient was referred for cardiac surgery. The suspected cause was confirmed during the surgery.- - - - - - - - - - ranking = 1keywords = pregnancy (Clic here for more details about this article) |
2/141. Small for gestational age infant in association with maternal prothrombin gene variant (nt 20210A).Most of disproportionate infants born small for gestational age (SGA) have an history of placental dysfunction with no explained cause. We report a case of an unexplained SGA infant with placental infarctions and thrombosis. Maternal thrombophilic disorder tests revealed that the patient was heterozygous for the A20210 prothrombin gene variant a newly identified thrombotic risk factor. It may be suggest that prothrombin gene variant, as factor V Leiden, could be a genetic risk factor for placental insufficiency.- - - - - - - - - - ranking = 0.31393826237981keywords = gestation (Clic here for more details about this article) |
3/141. Extensive venous and arterial thrombosis associated with an inhibitor to activated protein C.activated protein c resistance (APCR) in the absence of alterations in the factor V gene has been observed during pregnancy, in patients on oral contraceptives, in the presence of antiphospholipid antibodies, and in patients with ischemic stroke. We report a 49-year-old woman with recurrent major venous and arterial thromboses who displayed pronounced APCR, yet no changes in the activated protein C (APC) cleavage sites of factor V. The APCR values determined by four different assays were similar to those obtained in plasma from a homozygote for factor V Q506. Addition of IgG isolated from the patient's serum to normal plasma lowered the APCR ratio from 2.4 to 1.6. Incubation of patient's IgG with normal APC resulted in a profound change in the mobility of APC in crossed immunoelectrophoresis. APC was also shown to bind to patient's IgG immobilized on a protein A agarose column. factor va inactivation by APC was inhibited by patient's IgG, but not by control IgG in the presence or absence of either phospholipids or protein S. These results provide evidence for the existence of an acquired antibody against APC in the patient's plasma, which gave rise to the APCR phenotype and was probably responsible for the major thrombotic events. We suggest that acquired APCR due to anti-APC antibodies be considered a potential cause for severe venous and arterial thromboses.- - - - - - - - - - ranking = 0.2keywords = pregnancy (Clic here for more details about this article) |
4/141. Idiopathic mesenteric thrombosis following caesarean section.Mesenteric venous thrombosis, "the great mimicker", is a very rare disorder in pregnancy and the puerperium, particularly when not associated with any pre-existing thrombophilia or autoimmune states. We describe a patient requiring a resection of 150 cm of gangrenous small bowel after uncomplicated elective Caesarean section. The only risk factor for thrombosis was recovery from an elective Caesarean section, a condition classified by the Royal College of Obstetricians and Gynaecologists as "low risk". death from thromboembolism is the leading cause of maternal mortality and should always be considered with unusual post partum symptoms. early diagnosis of mesenteric vascular occlusion is difficult and recent evidence suggests that elevated GST isoenzyme may be helpful. In all cases of MVT anti-coagulation is the basis of treatment. patients who are not anti-coagulated after surgery have a recurrence rate of 25 per cent compared with 13 per cent of heparinised post-operative patients. As no other pre-existing cause for MVT was found, management was with warfarin for 6 months, the oral contraceptive pill was contraindicated and heparin prophylaxis was recommended for future pregnancies.- - - - - - - - - - ranking = 0.2keywords = pregnancy (Clic here for more details about this article) |
5/141. Internal jugular vein thrombosis in association with the ovarian hyperstimulation syndrome.Thrombosis of the internal jugular vein is a rare entity with the potential for serious consequences. Most of the reported cases of jugular venous thrombosis have occurred in the presence of an indwelling venous catheter, an established hypercoagulable state, or in association with head and neck sepsis. This report presents a case of a patient in whom jugular venous thrombosis developed during the first trimester of pregnancy after in vitro fertilization. thromboembolism in these circumstances can be related to a condition known as the ovarian hyperstimulation syndrome. The presentation of severe neck pain in pregnant women, especially in those who have undergone assisted reproduction procedures, should prompt evaluation by duplex scan to evaluate the jugular veins for thrombosis. Anticoagulation is the treatment of choice.- - - - - - - - - - ranking = 0.2keywords = pregnancy (Clic here for more details about this article) |
6/141. Novel mutation (E113X) of antithrombin iii gene (AT3) in a woman with gestational recurrent thrombosis.A 35-year-old Japanese woman with a low level (42-54%) of blood antithrombin (AT) III, experienced two induced abortions due to deep venous thrombosis at 8 weeks of gestation (GW) and cerebral thrombosis at 10 GW. The present pregnancy was successfully managed with intravenous administration of AT III (6,000-8,000 U/wk). Analysis of polymerase chain reaction (PCR)-single strand conformation polymorphism (SSCP) for exons 3A and 4 of the AT III gene (AT3) using her dna revealed extra expansion bands with altered migration. The dna sequencing demonstrated novel mutations in exon 3A of AT3: a G to T substitution at nucleotide position 5333 in codon GAG for Glu 113, causing a stop codon (E113X), and an A to T substitution at position 5338 in codon AAA for Lys 114, forming Asn (K114N). These novel mutations, especially E113X, in AT3 may be related to recurrent thrombosis in the pregnancy.- - - - - - - - - - ranking = 0.71393826237981keywords = pregnancy, gestation (Clic here for more details about this article) |
7/141. Umbilical artery regression: a rare complication of intravascular fetal transfusion.BACKGROUND: Intravascular fetal transfusion is an important therapeutic advance but is associated with several complications. Regression of an umbilical artery associated with transfusion is rare. CASE: A case of red blood cell alloimmunization managed by serial transfusions was complicated by functional loss of an umbilical artery during pregnancy. Refractory fetal bradycardia occurred during the last transfusion procedure, requiring emergency preterm cesarean delivery. Coagulative necrosis, thrombosis, and focal calcification of one umbilical artery was confirmed after delivery. CONCLUSION: Umbilical artery regression associated with transfusion therapy is rare and may complicate subsequent fetal transfusions.- - - - - - - - - - ranking = 0.2keywords = pregnancy (Clic here for more details about this article) |
8/141. Antepartum findings in fetal protein c deficiency.A pregnancy with fetal homozygous protein c deficiency was complicated in the third trimester by fetal ventriculomegaly, intraorbital thrombosis and placental infarcts, which could be imaged by combined use of ultrasonography and MRI.- - - - - - - - - - ranking = 0.2keywords = pregnancy (Clic here for more details about this article) |
9/141. A complication in anticoagulation using low-molecular weight heparin in a patient with a mechanical valve prosthesis. A case report.All mechanical heart valves are thrombogenic, and are associated with thromboembolic complications becomes ineffective. when anticoagulation Controversy exists with regard to the appropriate and safe anticoagulation regimen of gravid women with mechanical heart valve prostheses. While oral anticoagulants such as warfarin may be associated with fetal complications, the role of low-molecular weight heparin (LMWH) and heparinoids (and their respective appropriate dosage) have still to be determined. In developing countries such as saudi arabia, the prevalence of rheumatic fever is high, as is the percentage of female patients with mechanical heart valves and who are of child-bearing age. Thus, the issue of adequate anticoagulation on one hand, and avoidance of warfarin-induced embryopathy on the other hand, is crucial. To date, few reports are available of LMWH as sole anticoagulant in patients with mechanical heart valves. We report a case of massive valve thrombosis with subsequent pulmonary edema after warfarin anticoagulation was changed to LMWH during pregnancy, and administered at too low a dose.- - - - - - - - - - ranking = 0.2keywords = pregnancy (Clic here for more details about this article) |
10/141. Use of enoxaparin in a preterm infant.OBJECTIVE: To describe the use of enoxaparin to treat suspected thrombosis in a preterm neonate. CASE DESCRIPTION: A 29-week-gestation white infant with a family history of protein s deficiency lost color and blood flow to the right hand several hours after removal of the umbilical artery catheter. Although normal color returned to all except the distal first, second, and third fingers after warming, Doppler flow showed a radial artery defect, indicating a lack of blood flow. enoxaparin 1 mg/kg intravenously every eight hours was then started. Heparin concentrations measured via anti-Xa assay drawn four and eight hours after a dose were 0.78 and 0.39 units/mL, respectively. Pharmacokinetic parameters calculated from these concentrations using a one-compartment model were elimination half-life four hours, volume of distribution 0.13 L/kg, and clearance 0.022 L/kg/h. No adverse effects were noted. blood flow eventually returned, leaving only the third fingertip chronically injured. DISCUSSION: Differences between the neonatal and adult hemostatic systems contribute to an increased risk of thromboembolic events and an altered sensitivity to heparin anticoagulation in the neonate. Although heparin is currently the anticoagulant of choice, it may produce several adverse effects, such as hemorrhage and thrombocytopenia, which may be avoided by use of low-molecular-weight heparins (LMWHs). However, despite the efficacy and improved safety profile of LMWHs in adults, data regarding their use in children and neonates are scarce. This case demonstrates that enoxaparin can be used safely and effectively in a preterm infant through appropriate monitoring of heparin concentrations to adjust dosages. A larger volume of distribution of enoxaparin was noted in this neonate than in adults. CONCLUSIONS: enoxaparin 1 mg/kg intravenously every eight hours was used safely in this preterm infant with suspected thrombosis, suggesting that more than one dosing regimen may be appropriate in this population.- - - - - - - - - - ranking = 0.062787652475962keywords = gestation (Clic here for more details about this article) |
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