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prothrombin time prolonged

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https://www.readbyqxmd.com/read/29331940/screening-and-functional-exploration-of-prothrombin-arg596-related-mutations-in-chinese-venous-thromboembolism-patients
#1
Xi Wu, Lei Li, Qiulan Ding, Xuefeng Wang, Fang Wu, Wenman Wu
AIMS: Dysfunctional prothrombin residue Arg596 associated mutation has been found to precipitate venous thromboembolism (VTE). In the current study we investigated the prevalence of Arg596 associated mutations in Chinese patients with VTE and explored the functional impact of Arg596Gln mutation on coagulation function in affected patients. METHODS: Prothrombin clotting activity was measured in 267 unrelated patients with unprovoked VTE. Patients with moderately decreased activities underwent further analysis of the F2 gene...
January 13, 2018: Journal of Clinical Pathology
https://www.readbyqxmd.com/read/29331744/urinary-metabolomics-study-the-mechanism-of-taohong-siwu-decoction-intervention-in-acute-blood-stasis-model-rats-based-on-liquid-chromatography-coupled-to-quadrupole-time-of-flight-mass-spectrometry
#2
Xiaosong Zhang, Pengling Li, Yongli Hua, Peng Ji, Wanling Yao, Qi Ma, Ziwen Yuan, Yanqiao Wen, Chaoxue Yang, Yanming Wei
Taohong Siwu Decoction (TSD) is a classic prescription in traditional Chinese medicine and is widely used to promote blood circulation to remove blood stasis. However, the effect mechanisms are not yet well understood. Here, a urinary metabolomic approach based on liquid chromatography coupled to quadrupole time-of-flight mass spectrometry (LC/Q-TOF-MS) was conducted to explore the changes in the endogenous metabolites and to assess the integral efficacy of TSD on acute blood stasis model rats. Then, parameters for hemorheology and coagulation functions were detected...
January 2, 2018: Journal of Chromatography. B, Analytical Technologies in the Biomedical and Life Sciences
https://www.readbyqxmd.com/read/29315684/a-novel-predictor-of-severe-dengue-the-aspartate-aminotransferase-platelet-count-ratio-index-apri
#3
Zhang Hao, Xie Zhiwei, Xie Xushuo, Ou Yingyan, Zeng Wenting, Zhou Yuanping
OBJECTIVE: To evaluate risk factors for the development of dengue into severe dengue in Guangdong. METHODS: A retrospective analysis of clinical data from 212 dengue patients between June and October 2014. RESULTS: 174 (82.1%) patients in our study had classic dengue, of which 38 (17.9%) had severe diseases. The frequencies of jaundice, pleural effusion, ascites and vaginal bleeding were significantly different between the two groups (p < 0...
January 5, 2018: Journal of Medical Virology
https://www.readbyqxmd.com/read/29301470/risk-of-complications-of-ultrasound-guided-renal-biopsy-for-adult-and-pediatric-patients-with-systemic-lupus-erythematosus
#4
Y S Sun, I T Sun, H K Wang, A H Yang, C Y Tsai, C J Huang, D F Huang, C C Lai
Objective The objective of this paper is to identify the risk of complications of real-time ultrasound-guided renal biopsy in adult and pediatric patients with systemic lupus erythematosus (SLE). Materials and methods This retrospective study examined outcomes of 296 renal biopsy procedures in 275 SLE patients. Imaging-confirmed symptomatic hematoma was regarded as a major complication when intervention (blood transfusion, angiographic embolization, or surgery) was required or as a minor complication otherwise...
January 1, 2018: Lupus
https://www.readbyqxmd.com/read/29296714/management-of-venous-thromboembolism-during-thrombocytopenia-after-autologous-hematopoietic-cell-transplantation
#5
Ang Li, Chris Davis, Qian Wu, Shan Li, Madeline F Kesten, Leona A Holmberg, Ajay K Gopal, David A Garcia
Management of venous thromboembolism (VTE) remains challenging in patients with hematologic malignancy who undergo hematopoietic cell transplantation (HCT) due to prolonged thrombocytopenia. This study aims to (1) determine the incidence of VTE recurrence and bleeding during autologous HCT, (2) assess the impact of continuing vs temporarily withholding anticoagulation during thrombocytopenia, and (3) explore the impact of platelet threshold among other variables on the risk of bleeding. We performed this observational study in adults with lymphoma and myeloma who underwent autologous HCT between 2006 and 2015...
May 9, 2017: Blood Advances
https://www.readbyqxmd.com/read/29284355/stability-of-sodium-bicarbonate-injection-8-4-in-syringes-over-a-six-week-period-in-refrigerated-temperature
#6
Jack T Seki, Tian Q Wang, Paul M Yip, Tony Mazzulli, Mark D Minden
Background Dysfunctional central venous catheter prohibits the administration of potential life-saving chemotherapy and the delivery of essential supportive care needs to patients. Sodium bicarbonate injection has been shown to impede against fibrin clot formation and prolong prothrombin time and thrombin clotting time. Sodium bicarbonate injection has been tried as a second-line agent with good results in a small number of patients (internal data not published) when alteplase failed. We assessed whether the pre-filled sodium bicarbonate injection in 5 mL syringes would not only preserve sterility and retain its pH and concentration but also amount to the potential cost savings for future use when stored in a refrigerated environment...
January 1, 2017: Journal of Oncology Pharmacy Practice
https://www.readbyqxmd.com/read/29245350/a-case-report-of-patient-with-severe-acute-cholangitis-with-tigecycline-treatment-causing-coagulopathy-and-hypofibrinogenemia
#7
Xiaoqin Wu, Ping Zhao, Liang Dong, Xiuhong Zhang
RATIONALE: Tigecycline is the first member of the glycylcycline family. There are rarely reports of tigecycline causing coagulopathy and hypofibrinogenemia until now. We report a case on tigecycline-associated coagulopathy and hypofibrinogenemia and discuss the characteristics of the adverse reaction. PATIENT CONCERNS: A 47-year-old male patient with severe acute cholangitis who developed sepsis was treated with a high dosage (100 mg twice daily) of tigecycline...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29226657/short-centrifugation-to-ameliorate-turn-around-time-in-routine-coagulation-testing
#8
Albrecht Pfaefflin, Karen Schuster, Ruediger Braun
BACKGROUND: Fast and timely analysis of coagulation parameters is mandatory in hospital laboratories as the results are decisive for diagnosis and treatment in emergency patients. An important factor in TAT (turn-around time) prolongation is centrifugation of all samples prior to analysis. According to literature and most current SOPs (standard operation protocols) centrifugation time is given with 10 minutes at approximately 2,000 g and cannot be reduced without infringement of standards...
November 1, 2017: Clinical Laboratory
https://www.readbyqxmd.com/read/29217384/biocompatible-sulfenamide-and-sulfonamide-derivatives-of-metformin-can-exert-beneficial-effects-on-plasma-haemostasis
#9
Magdalena Markowicz-Piasecka, Kristiina M Huttunen, Elżbieta Mikiciuk-Olasik, Joanna Sikora
As the pharmacokinetic properties of metformin are unfavourable, several analogues and prodrugs have been synthesised to improve its bioavailability. The aim of this study was to assess the plasma stability of sulfenamide and sulfonamide derivatives of metformin and establish their effects on plasma haemostasis and integrity of red blood cells (RBCs). The overall haemostasis potential was evaluated spectrophotometrically by clot formation and lysis test (CL-test). PT (Prothrombin Time) and APTT (Activated Partial Tromboplastin Time) were used to evaluate the effects if the compounds on the extrinsic and intrinsic coagulation pathway...
December 4, 2017: Chemico-biological Interactions
https://www.readbyqxmd.com/read/29208866/acute-kidney-injury-in-patients-with-acute-viral-hepatitis-a-study-in-a-tertiary-care-hospital
#10
M A Rahman, D K Roy, C R Debnath, A S Roy, M A Muqueet, M S Kabir, S U Ahammed, M G Rabbani, M Asadujjaman, M B Hossain, M A Islam, N C Ray, G C Borman, M S Islam, S K Das, E H Khan, J Ara
This cross sectional observational study was done in the Department of Medicine, Mymensingh Medical College Hospital (MMCH), Mymensingh, Bangladesh from May 2013 to April 2014 to find out the proportion of acute kidney injury among patients with acute viral hepatitis and to identify risk factors associated with development of acute kidney injury (AKI). A total of 100 patients with acute viral hepatitis were included purposively as study subjects. Among them 61 were male and 39 were female. They were divided into AKI group (n=6) and non-AKI group (n=94) on the basis of development of AKI...
October 2017: Mymensingh Medical Journal: MMJ
https://www.readbyqxmd.com/read/29194698/impaired-rivaroxaban-clearance-in-mild-renal-insufficiency-with-verapamil-coadministration-potential-implications-for-bleeding-risk-and-dose-selection
#11
David J Greenblatt, Maulik Patel, Jerold S Harmatz, Wayne T Nicholson, Christopher M Rubino, Christina R Chow
Pharmacokinetics and antithrombotic effects of the Factor Xa inhibitor rivaroxaban were studied in subjects with mild renal insufficiency concurrently taking the P-glycoprotein and moderate CYP3A inhibitor verapamil, a drug commonly administered to patients with hypertension, ischemic heart disease, or atrial fibrillation. Age-matched controls with normal renal function were studied concurrently. Subjects' overall mean age was 59 years. Mean creatinine clearance values in the 2 groups were 105 and 71 mL/min...
November 30, 2017: Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/29179737/dose-dependent-effect-of-daptomycin-on-the-artificial-prolongation-of-prothrombin-time-in-coagulation-abnormalities-in-vitro-verification
#12
Hideki Hashimoto, Makoto Saito, Naoki Kanda, Takehito Yamamoto, Makiko Mieno, Shuji Hatakeyama
BACKGROUND: Several studies have reported that daptomycin induced artificial prolongation of prothrombin time (PT) in some test reagents, particularly in warfarin users. However, it remains unknown whether the artificial prolongation can be affected by coagulation abnormalities other than the use of warfarin. Thus, we investigated the effect of daptomycin on PT with two types of coagulation abnormalities. METHODS: Plasma samples were pooled by four groups: healthy volunteers (Plasma A), warfarin users with a PT-international normalized ratio (INR) of approximately 2...
November 28, 2017: BMC Pharmacology & Toxicology
https://www.readbyqxmd.com/read/29171354/haematology-and-coagulation-profiles-in-cats-with-congenital-portosystemic-shunts
#13
Caitlin E Tzounos, Michael S Tivers, Sophie E Adamantos, Kate English, Alan L Rees, Vicky J Lipscomb
Objectives The objectives of this study were, first, to report the haematological parameters and coagulation times for cats with a congenital portosystemic shunt (CPSS) and the influence of surgical shunt attenuation on these parameters; and, second, to identify any association between prolongation in coagulation profiles and incidence of perioperative haemorrhage. Methods This was a retrospective clinical study using client-owned cats with a CPSS. Signalment, shunt type (extra- or intrahepatic), degree of shunt attenuation (complete or partial), haematological parameters, prothrombin time (PT) and activated partial thromboplastin time (aPTT) test results, and occurrence of any perioperative clinical bleeding complications were recorded for cats undergoing surgical treatment of a CPSS at the Royal Veterinary College, UK, between 1994 and 2011...
December 2017: Journal of Feline Medicine and Surgery
https://www.readbyqxmd.com/read/29162399/laboratory-assessment-of-activated-protein-c-resistance-factor-v-leiden-and-performance-characteristics-of-a-new-quantitative-assay
#14
REVIEW
Jean Amiral, Anne Marie Vissac, Jerard Seghatchian
Activated Protein C Resistance is mainly associated to a factor V mutation (RQ506), which induces a deficient inactivation of activated factor V by activated protein C, and is associated to an increased risk of venous and arterial thrombosis in affected individuals, caused by the prolonged activated factor V survival. Its prevalence is mainly in Caucasians (about 5%), and this mutation is absent in Africans and Asians. Presence of Factor V-Leiden is usually evidenced with clotting methods, using a two-step APTT assay performed without or with APC: prolongation of blood coagulation time is decreased if this factor is present...
November 14, 2017: Transfusion and Apheresis Science
https://www.readbyqxmd.com/read/29156995/combined-repeated-dose-and-reproductive-developmental-toxicity-screening-test-of-benzene-1-1-oxybis-tetrapropylene-derivs-in-rats
#15
Yasuhiro Tsubokura, Ryuichi Hasegawa, Sunao Aso, Toshio Kobayashi, Takayuki Koga, Satsuki Hoshuyama, Yutaka Oshima, Katsumi Miyata, Yuji Kusune, Takako Muroi, Naoki Hashizume, Yoshiyuki Inoue, Shozo Ajimi, Kotaro Furukawa
We have conducted animal toxicity tests of chemicals for a chemical safety program implemented by the Ministry of Economy, Trade and Industry of Japan. Here we conducted a combined repeated-dose and reproductive/developmental toxicity screening test of benzene, 1,1'-oxybis-, tetrapropylene derivs. (BOTD). BOTD was administered to 9-week-old Crl:CD(SD) male and female rats by gavage at 0, 40, 200, or 1000 mg/kg/day. Males were treated for 42 days including mating period. Females were treated for 42-53 days through the premating, mating, pregnancy, and until Day 4 of lactation periods...
November 20, 2017: Drug and Chemical Toxicology
https://www.readbyqxmd.com/read/29139025/coagulopathy-in-zellweger-spectrum-disorders-a-role-for-vitamin-k
#16
Sara Zeynelabidin, Femke C C Klouwer, Joost C M Meijers, Monique H Suijker, Marc Engelen, Bwee Tien Poll-The, C Heleen van Ommen
INTRODUCTION: Zellweger spectrum disorders (ZSDs) are caused by an impairment of peroxisome biogenesis, resulting in multiple metabolic abnormalities. This leads to a range of symptoms, including hepatic dysfunction and coagulopathy. This study evaluated the incidence and severity of coagulopathy and the effect of vitamin K supplementation orally and IV in ZSD. METHODS: Data were retrospectively retrieved from the medical records of 30 ZSD patients to study coagulopathy and the effect of vitamin K orally on proteins induced by vitamin K absence (PIVKA-II) levels...
November 14, 2017: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/29137047/massive-neonatal-intracranial-hemorrhage-caused-by-bromadiolone-a-case-report
#17
Mingsheng Ma, Mengqi Zhang, Xiaoyan Tang, Zhenghong Li
RATIONALE: Bromadiolone, often called a super-warfarin, is a potent rodenticide with long half-life. Skin and mucosal bleeding is the most common clinical manifestations of its intoxication. Bromadiolone intoxications in adults and children have been reported, but this phenomenon is rarely seen in fetuses. This paper presents a case of neonate with massive intracranial hemorrhage mediated by bromadiolone intoxication, highlighting that the bromadiolone is potentially lethal to the fetus...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29132321/the-role-of-the-specialized-team-in-the-operation-of-continuous-renal-replacement-therapy-a-single-center-experience
#18
Harin Rhee, Gum Sook Jang, Miyeun Han, In Seong Park, Il Young Kim, Sang Heon Song, Eun Young Seong, Dong Won Lee, Soo Bong Lee, Ihm Soo Kwak
BACKGROUND: The requirement of continuous renal replacement therapy (CRRT) is increasing with the growing incidence of acute kidney injury (AKI). The decision to initiate CRRT is not difficult if an adequate medical history is obtained. However, the handling and maintenance of CRRT constitute a labor-intensive intervention that requires specialized skills. For these reasons, our center organized a specialized CRRT team in March 2013. The aim of this study is to report on the role of a specialized CRRT team and to evaluate the team's outcome...
November 13, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/29131074/tranexamic-acid-failed-to-reverse-the-anticoagulant-effect-and-bleeding-by-an-oral-direct-factor-xa-inhibitor-edoxaban
#19
Yuko Honda, Taketoshi Furugohri, Yoshiyuki Morishima
BACKGROUND/AIMS: Agents to reverse the anticoagulant effect of edoxaban, an oral direct factor Xa inhibitor, would be desirable in emergency situations. The aim of this study is to determine the effect of tranexamic acid, an antifibrinolytic agent, on the anticoagulant activity and bleeding by edoxaban in rats. METHODS: A supratherapeutic dose of edoxaban (3 mg/kg) was intravenously administered to rats. Three minutes after dosing, tranexamic acid (100 mg/kg) was given intravenously...
2018: Pharmacology
https://www.readbyqxmd.com/read/29126301/coagulation-testing-in-the-core-laboratory
#20
William E Winter, Sherri D Flax, Neil S Harris
Primary hemostasis begins with endothelial injury. VWF, produced by endothelial cells, binds to platelets and links them to subendothelial collagen. Platelet-derived ADP and thromboxane activate non-adhered platelets via their GPIIb/IIIa receptors, allowing these platelets to participate in platelet aggregation. Secondary hemostasis is initiated with the binding of factor VII to extravascular tissue factor (TF). Factors II, VII, IX and X are vitamin K-dependent factors. The role of vitamin K is to assist in the addition of gamma carboxylate groups to glutamic acids in the "GLA" domains of these factors...
November 8, 2017: Laboratory Medicine
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