background some of the dental procedures can cause bleeding. bleeding control can be difficult in some patients because of systemic disease or chronic anticoagulant therapy, so they may be at increased risk for bleeding occurrences or even death following invasive dental procedures. this study was schemed to measure the knowledge of general dentists in shiraz city regarding coagulation tests pe...

This study assessed the effect on coagulation tests of fresh frozen plasma (FFP), given according to guidelines compared with higher doses in critically ill patients. Group 1 (10 patients) received 12.2 ml/kg and group 2 (12 patients) 33.5 ml/kg FFP. Prothrombin time, activated partial thromboplastin time and factors I-XII were measured before and after FFP infusion. Factor levels of 30 IU/dl (...

Background: Coagulation plays an important role in haemostasis. Bleeding disorders caused by deficiency of certain coagulation factors such as hemophilia and Von Willebrand disease can affect haemostasis and may endanger life. Aim: To put a focus on the aetiology, pathogenesis, methods of diagnosis and lines of management of bleeding disorders. Conclusion: Bleeding disorders usually result from...

Fibrinogen is a unique precursor of fibrin and cannot be compensated for by other coagulation factors. If plasma fibrinogen concentrations are insufficient, hemostatic clots cannot be formed with the appropriate firmness. In severe trauma patients, plasma fibrinogen concentrations decrease earlier and more frequently than other coagulation factors, predicting massive bleeding and death. We revi...

In order to find out the sensitive tests to differentiate intravascular coagula tion from intravascular proteolysis, the changes in factors of coagulation fibrinolysis were studied on experimentally produced fibrinolysis, fibrinogenolysis and intravascular coagulation. Fibrinogen, and factors V and VIII were decreased; the prothrombin time, thrombin time and partial thromboplastin time were pro...

Data are presented to support the concept that the vitamin K-dependent coagulation factors are adsorbed onto the platelet membrane and that these make up part of the "plasma atmosphere" necessary for the aggregation of platelets by various agents. Together with evidence that other coagulation factors also are part of the plasma atmosphere, it is suggested that the aggregation reaction is part o...

We describe a case in which uncontrolled chronic disseminated intravascular coagulation (DIC) caused by an aortic aneurysm that was exacerbated by chemotherapy for lung cancer, showed dramatic improvement when warfarin, which was being administered for atrial fibrillation, was replaced by rivaroxaban, a direct oral anticoagulant (DOAC). The present case is interesting because a DOAC was effecti...

were born prematurely; 3 suffered birth asphyxia; and 3 became hypothermic. Laboratory studies showed fibrin degradation products, low platelet counts, and deficient coagulation factors. At necropsy extensive subarachnoid haemorrhages of a characteristic type were seen in all cases, and intravascular fibrin deposits in all but one. Haemorrhage in these babies is considered to be due to consumpt...

The coagulation curve obtained by the technique previously reported by the authors has been recently interpreted by J. B. Graham and E. M. Barrow as explainable to a large extent by a variation of the ionic force of the medium during dilution. In order to overcome the influence of this physico-chemical factor and to reveal the action of the biological coagulation factors, the authors have perfo...