2.An epidemiological study on vitamin K deficiency bleeding in infants under six months.
Fengrong ZHOU ; Shousen HE ; Xilu WANG
Chinese Journal of Preventive Medicine 2002;36(5):305-307
OBJECTIVETo understand the incidence and relevant affecting factors of infant vitamin K deficiency bleeding (VKDB) in Shandong Province.
METHODSWith stratified cluster sampling, 28 156 live newborns from five districts and six counties were surveyed for the condition of bleeding from their birth to 6 months based on standard diagnostic criteria. A 1:2 matched case-control study of VKDB was performed.
RESULTSAn overall incidence of VKDB was 3.27 per thousand in Shandong; higher in the rural areas (4.96 per thousand ) than in the urban areas (1.19 per thousand ). Most of the bleeding cases were breast-fed babies (about 95.57%) and incidence of VKDB in pre-term babies (22.52 per thousand ) was higher than that in term ones (2.96 per thousand ). Mothers' drug taking during pregnancy, asphyxia at birth, breast-feeding and illness within two weeks after birth were risk factors for it. Use of vitamin K after birth and bottle-feeding were protective factors for it.
CONCLUSIONSIncidence of VKDB is higher in Shandong Province, as compared to other areas all over the country at the same time period. It is very important to prevent VKDB, focusing on high-risk babies in the rural areas, including those of preterm, breast-fed and suffering illness after birth.
Bottle Feeding ; Case-Control Studies ; China ; epidemiology ; Humans ; Incidence ; Infant ; Infant, Newborn ; Vitamin K ; therapeutic use ; Vitamin K Deficiency Bleeding ; epidemiology ; prevention & control
3.Efficacy and safety of non-vitamin K antagonist versus vitamin K antagonist oral anticoagulants in the prevention and treatment of thrombotic disease in active cancer patients: a systematic review and meta-analysis of randomized controlled trials.
Chen Xi WANG ; Dan WU ; Ping Ping YANG ; Qing Hua WU
Chinese Journal of Cardiology 2020;48(8):689-696
Object We aimed to compare the efficacy and safety of non-vitamin K antagonist oral anticoagulants (NOAC) and vitamin K antagonist (VKA) in the prevention and treatment of thrombotic diseases in patients with active cancer. Methods: To find randomized controlled trials (RCT) in which NOACs were compared VKAs in active cancer, we searched the electronic databases (PubMed, Web of Science and Clinical Trials) up to May 2019 and and languages restricted to Chinese and English. According to the screening strategy, two researchers independently screened and extracted literature, evaluated the quality of literature, the suitability of collected cross study data for analysis, and tested the heterogeneity. The relative risk (RR) and 95% confidence interval (95%CI) of major bleeding, clinically related non-major bleeding, VTE, stroke and all-cause mortality in active cancer patients with VTE, active cancer patients with non-valvular atrial fibrillation (NVAF) was calculated and the results were compared between NOAC with VKA. Results: A total of 9 RCTs were included, including 5 cancers with VTE (5/9) and 4 cancers with NVAF (4/9). A total of 5 867 patients were included. After excluding 1 818 (30.99%) patients with cancer history, 4 049 (68.86%) patients with active cancer were statistically analyzed. Among them, 2 278 (56.26%) received NOAC treatment, 1 771 patients (43.74%) received VKA treatment. The quality of the included documents was high (all scores were>5 points), and the data of each included document could be summarized and analyzed (P>0.05). The heterogeneity of main outcome events was very low (I2 = 0). In VTE patients with active cancer, NOACs were more effective in reducing recurrence of VTE (RR=0.55, 95%CI 0.36 -0.84; P = 0.005) and clinically related non-major bleeding (RR=0.77, 95%CI 0.60 -0.98; P = 0.03) than VKAs. In NVAF patients with active cancer, efficacy of NOACs and VKAs was similar in terms of reducing VTE, stroke, clinically related non-major bleeding, major bleeding and all-cause mortality events (P>0.05). Conclusions: For patients with active cancer accompanied by VTE, NOAC may has more advantages in efficacy and safety compared to VKA in the prevention and treatment of thrombotic diseases.
Administration, Oral
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Anticoagulants/therapeutic use*
;
Atrial Fibrillation/drug therapy*
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Humans
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Neoplasms/drug therapy*
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Randomized Controlled Trials as Topic
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Venous Thromboembolism/prevention & control*
;
Vitamin K/therapeutic use*
4.Prevention and Treatment of Corticosteroid-Induced Osteoporosis.
Jun IWAMOTO ; Tsuyoshi TAKEDA ; Yoshihiro SATO
Yonsei Medical Journal 2005;46(4):456-463
Osteoporosis is one of the most serious complications of corticosteroid treatment. Loss of bone mineral density (BMD) and fractures occur early in the course of corticosteroid treatment, and thus early recognition of fracture risk and effective intervention based on evidence-based-medicine (EBM) are needed. A study of meta-analysis representing the highest level in a hierarchy of evidence showed that when the outcome measure of interest was limited to changes in lumbar spine BMD, bisphosphonates were the most effective of the agents studied in comparison with no therapy or treatment with calcium, and were also more efficacious than either vitamin D or calcitonin; the efficacy of bisphosphonates was enhanced when used in combination with vitamin D. Randomized controlled trials (RCTs) representing the second level in a hierarchy of evidence showed that bisphosphonates stabilized BMD not only in the lumbar spine, but also in the hip, and that parathyroid hormone (PTH) markedly increased lumbar spine BMD. According to the EBM, bisphosphonates and possibly PTH are suggested to be the most efficacious for preserving BMD. The efficacy of these agents in reducing the incidence of vertebral fractures in patients exposed to corticosteroids remains to be established in meta-analysis studies, although some RCTs have demonstrated the anti-fracture effects of etidronate, alendronate, and risedronate in the spine. Further RCTs of fracture prevention conducted on a large number of patients and their meta-analysis are needed to confirm the efficacy of bisphosphonates, PTH, or other agents in preventing vertebral and nonvertebral fractures.
Adrenal Cortex Hormones/*adverse effects
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Bone Density
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Diphosphonates/therapeutic use
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Estrogens/therapeutic use
;
Humans
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Osteoporosis/*chemically induced/*drug therapy/prevention & control
;
Parathyroid Hormone/therapeutic use
;
Vitamin K 2/therapeutic use
5.Interaction between Warfarin and the Herbal Product Shengmai-Yin: A Case Report of Intracerebral Hematoma.
Yonsei Medical Journal 2010;51(5):793-796
A 71-year-old man was stable on warfarin (2.25 mg daily) therapy with an international normalized ratio (INR) of 1.8-2.2 after a heart valve replacement surgery. Recently, he consumed the liquid-like herbal product called shengmai-yin (10 mL daily) against medical advice. Seven days after the daily consumption of shengmai-yin, he was admitted to the intensive care unit because of consciousness disturbance [Glasgow Coma Scale (GCS) score 7] with an INR of 5.08. Head computed topography revealed intracerebral hematoma in the left temporoparietal region. Both warfarin therapy and the herbal product were withdrawn. At the same time, therapy with intravenous vitamin K1 40 mg was started. On the second day of admission, craniectomy was performed to remove the intacerebral hematoma under general anesthesia. He remained confused and restless for 2 days, but then showed progressive recovery in the consciousness level as well as motor and verbal functions. Shengmai-yin contains herbal ingredients that can interact with warfarin. The Drug Interaction Probability Scale (DIPS) indicated that warfarin and shengmai-yin were highly probable causes of intracerebral hematoma. Patients on warfarin therapy should be discouraged from taking herbal medicines, especially preparations that are already known to have antiplatelet and antithrombotic effects.
Aged
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Anticoagulants/*adverse effects/therapeutic use
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Cerebral Hemorrhage/*chemically induced/drug therapy/surgery
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Drug Interactions
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Drugs, Chinese Herbal/*adverse effects
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Hematoma/*chemically induced/drug therapy/surgery
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Humans
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Male
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Treatment Outcome
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Vitamin K 1/therapeutic use
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Warfarin/*adverse effects/*therapeutic use
6.Interaction between Warfarin and the Herbal Product Shengmai-Yin: A Case Report of Intracerebral Hematoma.
Yonsei Medical Journal 2010;51(5):793-796
A 71-year-old man was stable on warfarin (2.25 mg daily) therapy with an international normalized ratio (INR) of 1.8-2.2 after a heart valve replacement surgery. Recently, he consumed the liquid-like herbal product called shengmai-yin (10 mL daily) against medical advice. Seven days after the daily consumption of shengmai-yin, he was admitted to the intensive care unit because of consciousness disturbance [Glasgow Coma Scale (GCS) score 7] with an INR of 5.08. Head computed topography revealed intracerebral hematoma in the left temporoparietal region. Both warfarin therapy and the herbal product were withdrawn. At the same time, therapy with intravenous vitamin K1 40 mg was started. On the second day of admission, craniectomy was performed to remove the intacerebral hematoma under general anesthesia. He remained confused and restless for 2 days, but then showed progressive recovery in the consciousness level as well as motor and verbal functions. Shengmai-yin contains herbal ingredients that can interact with warfarin. The Drug Interaction Probability Scale (DIPS) indicated that warfarin and shengmai-yin were highly probable causes of intracerebral hematoma. Patients on warfarin therapy should be discouraged from taking herbal medicines, especially preparations that are already known to have antiplatelet and antithrombotic effects.
Aged
;
Anticoagulants/*adverse effects/therapeutic use
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Cerebral Hemorrhage/*chemically induced/drug therapy/surgery
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Drug Interactions
;
Drugs, Chinese Herbal/*adverse effects
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Hematoma/*chemically induced/drug therapy/surgery
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Humans
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Male
;
Treatment Outcome
;
Vitamin K 1/therapeutic use
;
Warfarin/*adverse effects/*therapeutic use
7.Comparison of Aspirin and Naoxintong Capsule () with Adjusted-Dose Warfarin in Elderly Patients with High-Risk of Non-Valvular Atrial Fibrillation and Genetic Variants of Vitamin K Epoxide Reductase.
Huan WANG ; Xiao-Kai ZHOU ; Li-Fan ZHENG ; Xiao-Ying WU ; Hui CHEN
Chinese journal of integrative medicine 2018;24(4):247-253
OBJECTIVETo compared the therapeutic effect of a Chinese patent medicine Naoxintong Capsule (, NXT) and aspirin with adjusted-dose warfarin in Chinese elderly patients (over 65 years) with nonvalvular atrial fibrillation (NVAF) and genetic variants of vitamin K epoxide reductase (VKORC1), who are at high-risk of thromboembolism.
METHODSA total of 151 patients, with NVAF and AA genotype of VKORC1-1639 (a sensitive genotype to warfarin) and a CHADS-VASc clinical risk score of 2 or above, were chosen for this study. Patients were randomized into two groups and orally treated with a combination of aspirin (100 mg/day) and NXT (1.6 g thrice a day) or adjusted-dose warfarin [international normalized ratio 2.0-3.0). The primary end points including ischemic stroke and death as well as the secondary end points including hemorrhage events were followed up for at least 1 year.
RESULTSBaseline clinical data and the rates of primary end points were similar between groups. However, the rate of serious bleeding (secondary event) in the combination therapy group was lower than that in the adjusted-dose warfarin group (0% vs. 7.9%, odds ratio: 0.921, 95% confidence interval: 0.862-0.984, P=0.028).
CONCLUSIONSAspirin combined with NXT and warfarin displayed comparable rates of primary end point including ischemic stroke and all-cause death during the 1-year follow-up. However, as compared with warfarin, the combination therapy reduced the rate of serious bleeding. Therefore, aspirin combined with NXT might provide an alternative pharmacotherapy in preventing ischemic stroke for elderly patients with NAVF who cannot tolerate warfarin. (No. ChiCTR-TRC-13003596).
Aged ; Aspirin ; therapeutic use ; Atrial Fibrillation ; drug therapy ; enzymology ; genetics ; Base Sequence ; Capsules ; Drugs, Chinese Herbal ; therapeutic use ; Endpoint Determination ; Female ; Genetic Variation ; Humans ; Male ; Risk Factors ; Treatment Outcome ; Vitamin K Epoxide Reductases ; genetics ; Warfarin ; therapeutic use
8.Analysis of thirteen cases with secondary coagulation disorder caused by raticide exposure.
Xing-hua CHEN ; Bi-tao DAI ; Jie YU ; You-hua XU ; Ying XIAN ; Yong-chun SU ; Jian-wen XIAO ; Xian-hao WEN ; Xian-min GUAN
Chinese Journal of Pediatrics 2010;48(8):629-632
OBJECTIVETo summarize the clinical characteristics of secondary coagulation disorders caused by exposure to poison (raticide) in children and to investigate the diagnosis and corresponding treatment.
METHODThe process of diagnosis, clinical characteristics, response to treatment and the prognosis were analyzed.
RESULTSThe main clinical manifestation was mucosal bleeding (66.6%), including epistaxis, gingival bleeding, hematomas and so on. All these children were previously well and had no history of bleeding. Activated partial thromboplastin time (APTT) and prothrombin time (PT) were prolonged, factor II was undetectable and the levels of factors VII, IX, and X were lower. The fibrinogen was normal. A raticide was detected in blood and urine of 13 children although 12 of the patients had no definite history of raticide ingestion. Prothrombin complex, fresh frozen plasma and vitamin K(1) were effective in these cases. However, 2 - 3 weeks later, 6 patients presented with recurrent bleeding.
CONCLUSIONFor children with secondary coagulation disorders of unknown cause, intoxication of raticide should be considered. The administration of blood coagulation factors and vitamin K(1) are effective in early treatment, and the treatment period should be more than 2 months. The PT and APTT should be followed up. Vitamin K(1) should be stopped when PT and APTT are normal.
Blood Coagulation Disorders ; chemically induced ; diagnosis ; therapy ; Female ; Humans ; Infant ; Infant, Newborn ; Male ; Rodenticides ; poisoning ; Vitamin K 1 ; administration & dosage ; therapeutic use
9.Vitamin K and osteoporosis.
Acta Academiae Medicinae Sinicae 2003;25(3):346-349
There is a closely relationship between vitamin K and osteoporosis. As a cofactor for carboxylase activity, vitamin K can facilitate the conversion of glutamyl to gamma-carboxyglutamyl residues and influence the synthesis and excretion of gamma-carboxylation of osteocalcin to increase the formation of bone. Vitamin K can also effectively inhibit the absorption of bone mass. Besides, there are increasing evidences that vitamin K can effect the synthesis and excretion of nephrocalcin and interlukin-1,6 that can regulate calcium balance and bone metabolism. Meanwhile, there is a consistent line of evidence in human epidemiologic and intervention studies that clearly demonstrate that vitamin K can not only increase bone mineral density in osteoporotic people, but also reduce fracture rates to improve bony health. However more researches are required before vitamin K is widely applied in prevention and treatment of osteoporosis. The American Medical Association recently has increased the dietary reference intakes of vitamin K to 90 mg/d for females and 120 mg/d for males.
Animals
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Bone Density
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drug effects
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Humans
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Nutritional Requirements
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Osteocalcin
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metabolism
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Osteoporosis
;
drug therapy
;
etiology
;
prevention & control
;
Vitamin K
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antagonists & inhibitors
;
pharmacology
;
therapeutic use
10.Prophylaxis against venous thromboembolism in orthopedic surgery.
Chinese Journal of Traumatology 2006;9(4):249-256
Venous thromboembolism (VTE), which is manifested as deep vein thrombosis (DVT) and pulmonary embolism (PE), represents a significant cause of death, disability, and discomfort. They are frequent complications of various surgical procedures. The aging population and the survival of more severely injured patients may suggest an increasing risk of thromboembolism in the trauma patients. Expanded understanding of the population at risk challenges physicians to carefully examine risk factors for VTE to identify high-risk patients who can benefit from prophylaxis. An accurate knowledge of evidence-based risk factors is important in predicting and preventing postoperative DVT, and can be incorporated into a decision support system for appropriate thromboprophylaxis use. Standard use of DVT prophylaxis in a high-risk trauma population leads to a low incidence of DVT. The incidence of VTE is common in Asia. The evaluation includes laboratory tests, Doppler test and phlebography. Screening Doppler sonography should be performed for surveillance on all critically injured patients to identify DVT. D-Dimer is a useful marker to monitor prophylaxis in trauma surgery patients. The optimal time to start prophylaxis is between 2 hours before and 10 hours after surgery, but the risk of PE continues for several weeks. Thromboprophylaxis includes graduated compression stockings and anticoagulants for prophylaxis. Anticoagulants include Warfarin, which belongs to Vitamin K antagonists, unfractionated heparin, low molecular weight heparins, factor Xa indirect inhibitor Fondaparinux, and the oral IIa inhibitor Melagatran and ximelagatran. Recombinant human soluble thrombomodulin is a new and highly effective antithrombotic agent. Prophylactic placement of vena caval filters in selected trauma patients may decrease the incidence of PE. The indications for prophylactic inferior vena cava filter insertion include prolonged immobilization with multiple injuries, closed head injury, pelvic fracture, spine fracture, multiple long bone fracture, and attending discretion. Multiple-trauma patients are at increased risk for DVT but are also at increased risk of bleeding, and the use of heparin may be contraindicated. Serial compression devices (SCDs) are an alternative for DVT prophylaxis. Compression devices provide adequate DVT prophylaxis with a low failure rate and no device-related complications. Immobilization is one of important reasons of VTE. The ambulant patient is far less likely to develop complications of inactivity, not only venous thrombosis, but also contractures, decubitus ulcers, or osteoporosis (with its associated fatigue fractures), as well as bowel or bladder complications.
Anticoagulants
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therapeutic use
;
Factor Xa Inhibitors
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Heparin
;
therapeutic use
;
Heparin, Low-Molecular-Weight
;
therapeutic use
;
Humans
;
Orthopedic Procedures
;
adverse effects
;
Postoperative Complications
;
epidemiology
;
Pulmonary Embolism
;
prevention & control
;
Recombinant Proteins
;
therapeutic use
;
Risk Factors
;
Thrombomodulin
;
therapeutic use
;
Vena Cava Filters
;
Venous Thrombosis
;
epidemiology
;
prevention & control
;
Vitamin K
;
antagonists & inhibitors
;
Warfarin
;
therapeutic use