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https://www.readbyqxmd.com/read/28088496/endogenous-thrombin-potential-changes-during-the-first-cycle-of-oral-contraceptive-use
#1
Carolyn L Westhoff, Malcolm C Pike, Serge Cremers, Andrew Eisenberger, Stella Thomassen, Jan Rosing
OBJECTIVES: Venous thromboembolism (VTE) risk increases within months of combination oral contraceptive (COC) initiation. Because elevated endogenous thrombin potential (ETP) has been found in several studies to be a VTE risk factor, we evaluated the extent of ETP changes during the initial cycle of an ethinyl estradiol (EE) and levonorgestrel (LNG) COC. We also assessed the relationship between ETP changes and systemic EE and LNG concentrations. STUDY DESIGN: Participants provided multiple blood samples during a first 21-day cycle of a 30 μg EE/150 μg LNG COC and after a further 7 days without an active COC...
January 11, 2017: Contraception
https://www.readbyqxmd.com/read/28087107/establishment-of-the-2nd-korean-national-biological-reference-standard-for-blood-coagulation-factor-viii-c-concentrate
#2
Naery Lee, Ji Suk Seo, Jae Ok Kim, Sang Ja Ban
Since the 1st Korean national biological reference standard for factor (F)VIII concentrate, established in 2001, has shown declining potency, we conducted this study to replace this standard with a 2nd Korean national biological reference standard for blood coagulation FVIII concentrate. The candidate materials for the 2nd standard were prepared in 8000 vials with 10 IU/ml of target potency, according to the approved manufacturing process of blood coagulation Factor VIII:C Monoclonal Antibody-purified, Freeze-dried Human Blood Coagulation Factor VIII:C...
January 10, 2017: Biologicals: Journal of the International Association of Biological Standardization
https://www.readbyqxmd.com/read/28087052/contraceptive-practices-of-women-with-complex-congenital-heart-disease
#3
Pamela D Miner, Mary M Canobbio, Dorothy D Pearson, Mary Schlater, Yvonne Balon, Kathryn J Junge, Ami Bhatt, Deena Barber, Michelle J Nickolaus, Adrienne H Kovacs, Philip Moons, Kate Shaw, Susan M Fernandes
Understanding the contraceptive practices of women with complex congenital heart disease (CHD) and providing them individualized contraception counseling may prevent adverse events and unplanned high-risk pregnancies. Given this, we sought to examine the contraceptive practices in women with CHD, describe adverse events associated with contraceptive use, and describe the provision of contraception counseling. Women >18 years were recruited from 2011 to 2014 from 9 adult CHD (ACHD) centers throughout North America...
December 18, 2016: American Journal of Cardiology
https://www.readbyqxmd.com/read/28081590/emergency-endoscopic-variceal-ligation-in-cirrhotic-patients-with-blood-clots-in-the-stomach-but-no-active-bleeding-or-stigmata-increases-the-risk-of-rebleeding
#4
Su Jin Kim, Cheol Woong Choi, Dae Hwan Kang, Hyung Wook Kim, Su Bum Park, Young Mi Hong, Ki Tae Yoon, Mong Cho, Hyung Seok Nam, Sm Bakhtiar Ui Islam
BACKGROUND/AIMS: This study aimed to evaluate the efficacy and safety of emergency variceal ligation for the prevention of rebleeding in cirrhotic patients who are found on initial endoscopy to have blood clots in the stomach but no actively bleeding esophageal and gastric varices or stigmata. METHODS: This study included 28 cirrhotic patients who underwent emergency prophylactic EVL and 41 who underwent an elective intervention between January 2009 and June 2014...
December 2016: Clinical and Molecular Hepatology
https://www.readbyqxmd.com/read/28079789/the-impact-of-irrigating-fluid-absorption-on-blood-coagulation-in-patients-undergoing-transurethral-resection-of-the-prostate-a-prospective-observational-study-using-rotational-thromboelastometry
#5
Hyun-Jung Shin, Hyo-Seok Na, Young-Tae Jeon, Hee-Pyoung Park, Sun-Woo Nam, Jung-Won Hwang
Although endoscopic transurethral resection of the prostate (TURP) is a well-established procedure as a treatment for benign prostatic hyperplasia, its complications remain a concern. Among these, coagulopathy may be caused by the absorption of irrigating fluid. This study aimed to evaluate such phenomenon using a rotational thromboelastometry (ROTEM).A total of 20 patients undergoing TURP participated in this study. A mixture of 2.7% sorbitol-0.54% mannitol solution and 1% ethanol was used as an irrigating fluid, and fluid absorption was measured via the ethanol concentration in expired breath...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28078811/the-effects-of-nanomaterials-on-blood-coagulation-in-hemostasis-and-thrombosis
#6
REVIEW
Jan Simak, Silvia De Paoli
The blood coagulation balance in the organism is achieved by the interaction of the blood platelets (PLTs) with the plasma coagulation system (PCS) and the vascular endothelial cells. In healthy organism, these systems prevent thrombosis and, in events of vascular damage, enable blood clotting to stop bleeding. The dysregulation of hemostasis may cause serious thrombotic and/or hemorrhagic pathologies. Numerous engineered nanomaterials are being investigated for biomedical purposes and are unavoidably exposed to the blood...
January 11, 2017: Wiley Interdisciplinary Reviews. Nanomedicine and Nanobiotechnology
https://www.readbyqxmd.com/read/28076307/evaluation-of-the-greiner-bio-one-serum-separator-bca-fast-clot-tube
#7
Goce Dimeski, Julie Johnston, Paul P Masci, Kong-Nan Zhao, Nigel Brown
BACKGROUND: Current commercial tubes have difficulties in producing "true" serum from all blood samples even within the recommended clotting times. Hence, Becton Dickinson (BD) and now Greiner have produced tubes containing thrombin as the procoagulant to reduce the clotting time and increase the possibility of producing serum from anticoagulated blood samples. METHODS: The Greiner BCA Fast Clot (GBBCAFC) tube was evaluated in a hospital environment using 40 participants, (30 healthy and 10 undergoing renal dialysis) for 32 analytes against the Greiner lithium heparin tube and the BD Rapid Serum Tubes (BD RST) tube measured on Beckman DxC 800 and DxI 800 analyzers...
January 11, 2017: Clinical Chemistry and Laboratory Medicine: CCLM
https://www.readbyqxmd.com/read/28074808/demonstration-of-blood-flow-by-color-doppler-in-the-femoral-artery-distal-to-arterial-cannula-during-peripheral-venoarterial-extracorporeal-membrane-oxygenation
#8
K G Suresh Rao, T Muralikrishna, K R Balakrishnan
In spite of distal perfusion of the limb using a cannula, the limb can have ischemic events if there is an undetected kink or clot anywhere in the line or thrombus in the artery. There are several ways to monitor and assess the limb ischemia. Monitoring for clinical signs of limb ischemia like temperature change and pallor is reliable and mandatory. We report a method where we used color Doppler to document the blood flow. Curvilinear vascular probe of an echo machine is used to identify the flow in the distal femoral artery of the lower limb...
January 2017: Annals of Cardiac Anaesthesia
https://www.readbyqxmd.com/read/28074788/comparison-of-two-doses-of-heparin-on-outcome-in-off-pump-coronary-artery-bypass-surgery-patients-a-prospective-randomized-control-study
#9
Murali Chakravarthy, Dattatreya Prabhakumar, Patil Thimmannagowda, Jayaprakash Krishnamoorthy, Antony George, Vivek Jawali
INTRODUCTION: While off pump coronary artery bypass surgery is practiced with an intention to reduce the morbidity associated with cardiopulmonary bypass, the resultant 'hypercoagulability' needs to be addressed. Complications such as cavitary thrombus possibly due to the hyper coagulability after off pump coronary artery bypass surgery have been described. Many clinicians use higher doses of heparin - up to 5 mg/kg in order to thwart this fear. Overall, there appears to be no consensus on the dose of heparin in off pump coronary artery bypass surgeries...
January 2017: Annals of Cardiac Anaesthesia
https://www.readbyqxmd.com/read/28070229/novel-device-for-removal-of-blot-clot-obstructions-in-drainage-tubes
#10
Scott M Thompson, Cornelius A Thiels, Johnathon M Aho
Medical drains frequently become obstructed requiring removal or re-intervention. Currently, there is no widely accepted practice for maintaining drain patency. A simple device to remove obstructions from medical drains may have significant benefit. We manufactured a prototype drain clot extractor (DCE) for extracting obstructions. Fresh nonanticoagulated swine blood was instilled within drainage tubes of 16, 20, and 32 French (n = 2 for each size) to generate a 4 cm blood clot. The operator was then equipped with a 0...
March 2017: Journal of Medical Devices
https://www.readbyqxmd.com/read/28070048/-role-of-local-citrate-anticoagulation-in-continuous-blood-purification-to-patients-at-high-risk-of-bleeding-in-icu
#11
Shangping Zhao, Hao Ou, Yue Peng, Zuoliang Liu, Mingshi Yang, Xuefei Xiao
To evaluate the safety and efficiency of citrate anticoagulant-based continuous blood purification in patients at high risk of bleeding. 
 Methods: One hundred and fifty-two patients at high risk of bleeding were divided into local citrate group (group A, n=68) and heparin group (group B, n=84). Clotting function, change of pH, ionized sodium, bicarbonate ion, ionized calcium, activated clotting time (ACT) and complications were monitored before and during treatment. 
 Results: Compared to the group A, the incidence of clotting in filter and chamber, the degree of bleeding or fresh bleeding were significantly reduced in the group B (P<0...
December 28, 2016: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/28069606/proteolytic-properties-of-single-chain-factor-xii-a-mechanism-for-triggering-contact-activation
#12
Ivan Ivanov, Anton Matafonov, Mao-Fu Sun, Qiufang Cheng, S Kent Dickeson, Ingrid M Verhamme, Jonas Emsley, David Gailani
When blood is exposed to variety of artificial surfaces and biologic substances, the plasma proteins factor XII (FXII) and prekallikrein undergo reciprocal proteolytic conversion to the proteases αFXIIa and α-kallikrein by a process called contact activation. These enzymes contribute to host-defense responses including coagulation, inflammation, and fibrinolysis. The initiating event in contact activation is debated. To test the hypothesis that single-chain FXII expresses activity that could initiate contact activation, we prepared human FXII variants lacking the Arg353 cleavage site required for conversion to αFXIIa (FXII-R353A), or lacking the three known cleavage sites at Arg334, Arg343, and Arg353 (FXII-T, for "triple" mutant), and compared their properties to wild type αFXIIa...
January 9, 2017: Blood
https://www.readbyqxmd.com/read/28064357/ischemic-stroke-experimental-models-and-reality
#13
REVIEW
Clemens J Sommer
The vast majority of cerebral stroke cases are caused by transient or permanent occlusion of a cerebral blood vessel ("ischemic stroke") eventually leading to brain infarction. The final infarct size and the neurological outcome depend on a multitude of factors such as the duration and severity of ischemia, the existence of collateral systems and an adequate systemic blood pressure, etiology and localization of the infarct, but also on age, sex, comorbidities with the respective multimedication and genetic background...
January 7, 2017: Acta Neuropathologica
https://www.readbyqxmd.com/read/28062681/dialyzer-based-cell-salvage-system-a-superior-alternative-to-conventional-cell-salvage-in-off-pump-coronary-artery-bypass-grafting
#14
Amber Malhotra, Pankaj Garg, Arvind Kumar Bishnoi, Pranav Sharma, Vivek Wadhawa, Komal Shah, Sanjay Patel, Umesh Kumar Ahirwar, Dayesh Rodricks, Himani Pandya
OBJECTIVES: Our goal was to test the hypothesis that the use of a dialyzer-based cell salvage system during off-pump coronary artery bypass grafting (OPCABG) reduces requirements for homologous blood transfusions (HBT) and improves postoperative haemtochemical parameters. METHODS: Data were prospectively collected for 222 patients who had OPCABG using 3 different cell salvage techniques: (1) dialyzer-based cell salvage (DBCS) (n = 75), (2) conventional cell salvage (CCS) (n = 73) and (3) without cell salvage (WCS) (n = 74)...
January 6, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28062329/managing-symptoms-enhancing-patients-self-management-knowledge-and-skills-for-surgical-recovery
#15
REVIEW
Jan Odom-Forren, Susan Wesmiller
OBJECTIVES: To review postoperative symptoms experienced by patients following surgery for cancer and discuss focused, evidenced-based methods to teach the patient acute pain and symptom management to include both pharmacological and non-pharmacological strategies. DATA SOURCES: Peer reviewed articles and national guidelines. CONCLUSION: Although significant advances have been made in providing effective acute pain control, pain remains a serious consequence after cancer surgery...
January 3, 2017: Seminars in Oncology Nursing
https://www.readbyqxmd.com/read/28060333/mesenchymal-stromal-cell-culture-and-delivery-in-autologous-conditions-a-smart-approach-for-orthopedic-applications
#16
Luisa Trombi, Serena Danti, Sara Savelli, Stefania Moscato, Delfo D'Alessandro, Claudio Ricci, Stefano Giannotti, Mario Petrini
Human Mesenchymal Stromal Cells (hMSCs) are cultured in vitro with different media. Limits on their use in clinical settings, however, mainly depend on potential biohazard and inflammation risks exerted by xenogeneic nutrients for their culture. Human derivatives or recombinant materials are the first choice candidates to reduce these reactions. Therefore, culture supplements and materials of autologous origin represent the best nutrients and the safest products. Here, we describe a new protocol for the isolation and culture of bone marrow hMSCs in autologous conditions - namely, patient-derived serum as a supplement for the culture medium and fibrin as a scaffold for hMSC administration...
December 8, 2016: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/28058691/platelet-subpopulation-bearing-leukocyte-specific-antigen-and-tissue-factor
#17
Z A Gabbasov, O S Saburova, O A Antonova, N V Golubeva, S G Khaspekova, O N Shustova, I T Zyuryaev, M Ya Ruda, A V Mazurov
Platelets bearing leukocyte antigen CD45 were identified in the blood of patients with myocardial infarction (MI) and healthy donors by flow cytofluorimetry. Part of these platelets contained tissue factor (TF)-primary initiator of blood clotting. The number of CD45(+) and CD45(+)/TF(+) platelets in MI patients at the first day was comparable with their level in healthy donors, but was increased at 8-12 days after MI onset. At that time in some patients the amount of CD45(+) and CD45(+)/TF(+) platelets reached 5-6 and 2-3% of their total number...
November 2016: Doklady. Biochemistry and Biophysics
https://www.readbyqxmd.com/read/28051909/in-vitro-heterogeneous-degradation-of-alginate-and-its-validation-of-different-molecular-weight-on-blood-bio-compatibility
#18
Mengxue Xu, Chao Feng, Juan Wang, Xuqian Lang, Guixue Xia, Xiaoping Yu, Qiuxia Ji, Xiaojie Cheng, Ming Kong, Ya Liu, Xiguang Chen
In the present work, sodium alginate (ALG) was degraded by heterogeneous phase acid degradation. The molecular weight distribution of ALG after degradation was close to homogenization. Then the blood bio-compatibility of ALG with different molecular weights (ALG-0h 50,075 kDa, ALG-0.5h 20,680 kDa, ALG-2h 13,170 kDa and ALG-96h 1,170 kDa) was evaluated in vitro and vivo. The human umbilical vein endothelial cells (HUVECs) were used to assess the cytotoxicity of ALGs, ALG-0.5h and ALG-2h exhibited greater increment in percentage of cell viability comparing with ALG-0h and ALG-96h...
January 4, 2017: Journal of Biomaterials Science. Polymer Edition
https://www.readbyqxmd.com/read/28050452/primary-abdominal-pregnancy-a-case-report
#19
Sunita Dubey, Mohit Satodiya, Priyanka Garg, Mamta Rani
Abdominal pregnancy is a potentially life threatening form of ectopic gestation with an incidence of 1% of all the ectopic pregnancies. Rarely, it may reach at advanced gestation and a viable fetal outcome is indeed a rare event. Most of them are terminated earlier due to poor fetal prognosis and higher chances of maternal mortality secondary to haemorrhagic shock following spontanous placental separation. A high index of suspicion is important for making a diagnosis of abdominal pregnancy and its timely management after correct diagnosis...
November 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28050372/blood-contamination-of-the-small-bore-peripheral-intravenous-catheter-in-neonates
#20
Vani Krishnamurthy, Srinivasa Murthy Doreswamy, Sushma Krishnagowda
INTRODUCTION: Peripheral Intravenous Catheters (PIV) are extensively used in sick neonates for administration of medicines and nutrition. When these PIVs are used on intermittent basis, they are flushed with saline in order to keep the hub of the catheter free from blood. Presence of blood in the hub of the catheter can be potentially dangerous as it could facilitate infection. AIM: The aim of this study was to find the magnitude of blood contamination of PIV catheter hub after routine flushing...
November 2016: Journal of Clinical and Diagnostic Research: JCDR
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