Active clinical trials for "Hemorrhage"

The purpose of this pilot trial is to test the safety and efficacy of administering one dose of vitamin E, via a tube into the stomach, to extremely preterm infants (less than 27 weeks gestation and less than 1000 grams birth weight). This pilot will examine whether a single dose of vitamin E will be absorbed into the infants' bloodstreams with resulting serum α-tocopherol level in the target range of 1-3 mg/dl.

The aim of this study is to compare the efficacy of a proton pump inhibitor (lansoprazole) and a histamine-2 receptor antagonist (famotidine) in preventing recurrent ulcer bleeding in patients with a history of H. pylori-negative idiopathic peptic ulcers.

It is very important to decrease the bleeding during functional endoscopic sinus surgery (FESS) in order to increase the visibility of the surgical site. Our primary goal was to investigate the effects of magnesium sulfate and dexmedetomidine used for controlled hypotension on visibility of surgical site.

Cerebral vasospasm following subarachnoid hemorrhage (SAH) is the most common cause of morbidity and mortality. Recent studies indicate that Rho-kinase play an important role in the occurrence of such cerebral vasospasm. Eicosapentaenoic acid (EPA) inhibits sphingosylphosphorylcholine (SPC)-induced Rho-kinase activation in vitro. So this study examines whether EPA prevents cerebral vasospasm occurrence after SAH in patients.

Previous randomised studies showed that radial artery catheterisation for percutaneous cardiovascular procedures has a superior safety profile than femoral access, however the confirmation of these benefits in the real world by a large, specific, observational study is still lacking. We endeavoured to assess the access site-related outcomes of any percutaneous cardiovascular procedure by designing a prospective registry monitoring a consecutive sample of patients in a short period of time at nine Roman hospitals reflecting the contemporary state of health care.

Running title: Effect of Clopidogrel on Postoperative Bleeding in Patients undergoing Coronary Artery Bypass Surgery Title: Clopidogrel and bleeding in patients undergoing coronary artery bypass grafting. Is surgical delay necessary in patients using clopidogrel? And if so, which is the safety time interval when clopidogrel should be stopped before surgery in order to avoid bleeding and other related complications. Background: By blockade of the platelet ADP receptor, clopidogrel inhibits the binding of fibrinogen to the platelet GPIIb/IIIa receptor complex, thereby preventing platelet aggregation from ADP stimulation. Some authors suggest that the platelet function is completely recovered in 7 days after stopping clopidogrel in healthy subjects. Other researches suggest full recovery of platelet function in 3 to 5 days. Study objectives: To investigate if the interruption of the clopidogrel is necessary before CABG in order to prevent bleeding and other complications. To trace the increased risk patients for postoperative bleeding and to individualize the therapy according to TEG measurements. Design: A prospective, randomized mono- center study Patients: Patients who are receiving elective or urgent CABG surgery and are pre-treated at least 5 days before surgery with clopidogrel Primary endpoint: To determine if there are significant differences in blood loss, transfusions and rethoracotomies in the three selected groups of patients treated with clopidogrel To asses the predictive value of the TEG clot strength in postoperative bleeding in patients using Clopidogrel. Secondary endpoints: Death, myocardial infarction, stroke, respiratory failure, renal failure requiring dialysis, mediastinitis,readmission rates within 30 days from discharge, and ICU and hospital lengths of stay Risks: Using standard dose of aprotinin, we consider no increased risk in blood loss and other related complications for this three groups of patients. Possible benefits: Reduction of time delay in operating patients under treatment with clopidogrel. A more accurate time interval when clopidogrel should be stopped before surgery in order to eliminate the risk of bleeding and associated complications.

Interruption of a pregnancy after 14 weeks gestation may be required when the fetus is dead, severely malformed or in cases of maternal illness. This process is usually conducted medically in Australia, using the prostaglandin E1 analogue misoprostol. This prostaglandin, although not specifically licensed for use in pregnancy termination, is now a common abortifacient with a lot of accumulated experience both within Australia and internationally. Since 1996, misoprostol, a synthetic prostaglandin, has been used at King Edward Memorial Hospital as the principal agent for second trimester pregnancy termination. This agent is administered vaginally, and in its current form and dosage regimen results in 75-80% of women delivering within 24 hours. As experience with this agent has grown, it has been observed that in approximately 40% of women the placenta is either completely retained or incompletely delivered, necessitating operative removal and an increased potential for maternal blood loss. In this study, it is planned, in a randomized controlled clinical trial, to evaluate three regimens for the management of placental delivery in women undergoing second trimester pregnancy interruption. The primary intention of this study is to develop a third stage management protocol to reduce the incidence of placental retention in second trimester medical pregnancy termination. The secondary aim of this study is to assess the ultrasound appearance of the uterus and its cavity within 24 hours of second trimester pregnancy termination. The ultrasound appearances of the uterus following second trimester pregnancy loss have not been previously investigated in detail. Previous ultrasound studies of the term postpartum uterus have demonstrated a high incidence of echogenic material within the uterine cavity soon after an uncomplicated vaginal delivery. These findings have been of concern as the ultrasound appearances may erroneously imply a need for operative intervention. The investigators wish to ascertain if this high incidence of echogenic tissue presence is also true in the second trimester. Ultrasound is frequently used by clinicians to define placental completeness and the potential requirement for surgical curettage. The data from this single sonographic examination of the uterus will provide baseline data for a planned longitudinal study of uterine appearances following second trimester pregnancy loss and their correlation with clinical symptoms.

This community-based trial will study misoprostol for the prevention of postpartum hemorrhage in rural Pakistan. Traditional birth attendants assisting home deliveries will administer study tablets (600 mcg oral misoprostol or placebo) in the third stage of labor to women participating in the trial. Blood loss, hemoglobin levels, side effects, and other variables will be evaluated.

Previous research has confirmed that hemorrhage is among the most commonly encountered pregnancy complications in the Tibet Autonomous Region (TAR). This trial will test the effectiveness of a traditional Tibetan drug (Zhi Byed 11) vs. misoprostol to prevent postpartum hemorrhage (PPH) among women delivering vaginally in three hospitals in Lhasa, TAR.

Brain vascular malformations, including arteriovenous malformations (AVM), cavernous malformations (CVM) and aneurysms, are a source of life-threatening risk of intracranial hemorrhage. The etiology and pathogenesis are unknown. There is no medical therapy presently available. Prevention of spontaneous intracerebral hemorrhage (ICH) is the primary reason to treat brain vascular malformations. The goal of this study is to: begin pilot studies to lay the groundwork for future clinical trials to develop medical therapy to decrease ICH risk. Matrix metalloproteinases (MMPs) regulate the extracellular matrix in association with various hemorrhagic brain disorders. MMP-9 has been most consistently associated with vascular wall instability and hemorrhagic brain disorders. Doxycycline, a non-specific MMP inhibitor, may enhance vascular stability, thus reducing the risk of spontaneous hemorrhage in brain vascular malformations by decreasing MMP-9 activity.