Abstract:
OBJECTIVE:To determine the most effective and safe dose of enoxaparin to prevent deep venous thrombosis in high-risk surgical patients. DESIGN:A double-blind, randomized, multicenter clinical trial. SETTING:Private, university, and government hospitals in the United States. PATIENTS:572 patients having elective hip replacement surgery, 568 of whom received study medication and had efficacy data available for evaluation. INTERVENTIONS:Patients were randomly assigned to one of three subcutaneous enoxaparin regimens: 10 mg once daily (161 patients); 40 mg once daily (199 patients); and 30 mg every 12 hours (208 patients). Treatment was initiated within 24 hours after surgery and continued for as long as 7 days. Treatment with 10 mg enoxaparin once daily was discontinued prematurely after an interim analysis showed an increased deep venous thrombosis incidence in this treatment group. MEASUREMENTS:Efficacy was determined by bilateral lower extremity venography, noninvasive vascular imaging methods, or clinical evidence on day 7 of treatment or earlier if clinically indicated. RESULTS:Deep venous thrombosis occurred in 25% (40 of 161) of the patients who received 10 mg of enoxaparin once daily; in 14% (27 of 199) of those receiving 40 mg of enoxaparin once daily; and in 11% (22 of 208) in those receiving 30 mg of enoxaparin every 12 hours. The incidence of deep venous thrombosis was significantly higher in patients who received 10 mg of enoxaparin once daily compared with those who received 40 mg of enoxaparin once daily (P = 0.02) or those who received 30 mg of enoxaparin every 12 hours (P < 0.001). The difference between the patients who received 40 mg once daily and those who received 30 mg every 12 hours was not significant. Only two cases of pulmonary embolism were diagnosed, one in patients receiving 40 mg of enoxaparin and one in those receiving 10 mg once daily. The incidence of hemorrhagic complications differed significantly between patients who received 10 mg of enoxaparin once daily (5%, 8 of 161 patients) and those who received 30 mg of enoxaparin every 12 hours (13%, 26 of 208; P < 0.05). CONCLUSIONS:After surgery, enoxaparin, 40 mg once daily or 30 mg every 12 hours, is more effective than a regimen of 10 mg once daily to prevent deep venous thrombosis in patients having elective hip replacement surgery. The regimens of 40 mg once daily and 30 mg every 12 hours provided prophylaxis similar to the most effective drug treatments previously reported. The incidence of hemorrhagic episodes with the regimens of 40 mg once daily and 30 mg twice daily was higher than that observed with 10 mg once daily; however, major hemorrhage occurred in only 4% to 5% of patients receiving the higher-dose regimens. The risk-to-benefit ratio supports the use of enoxaparin as a therapeutic agent to prevent deep venous thrombosis in these patients.
journal_name
Ann Intern Medjournal_title
Annals of internal medicineauthors
Spiro TE,Johnson GJ,Christie MJ,Lyons RM,MacFarlane DE,Blasier RB,Tremaine MDdoi
10.7326/0003-4819-121-2-199407150-00001subject
Has Abstractpub_date
1994-07-15 00:00:00pages
81-9issue
2eissn
0003-4819issn
1539-3704journal_volume
121pub_type
临床试验,杂志文章,多中心研究,随机对照试验abstract::We evaluated 10 patients with hidradenitis suppurative or acne conglobata who developed arthritis. In contrast to patients with acne fulminans and arthritis, all our subjects were adults over 22 years of age; nine were black; and four were women. Nine patients had episodic inflammatory oligoarthritis affecting mainly ...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-97-4-520
更新日期:1982-10-01 00:00:00
abstract::Two patients referred for cancer chemotherapy were found to be chronic, asymptomatic hepatitis B surface antigen (HBsAg) carriers. They had normal serum aminotransferase levels, but their sera were positive for HGsAg and antibody to hepatitis B e antigen. Both patients developed acute, icteric hepatitis within 3 month...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-96-4-447
更新日期:1982-04-01 00:00:00
abstract:BACKGROUND:Increased prevalence of adolescent obesity requires effective treatment options beyond behavior therapy. OBJECTIVE:To see whether sibutramine reduced weight more than placebo in obese adolescents who were receiving a behavior therapy program. DESIGN:12-month, 3:1 randomized, double-blind trial conducted fr...
journal_title:Annals of internal medicine
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.7326/0003-4819-145-2-200607180-00005
更新日期:2006-07-18 00:00:00
abstract:BACKGROUND:Screening women for Chlamydia trachomatis in family planning clinics is associated with a reduced incidence of chlamydial sequelae. However, the question of whom to screen to maintain efficient use of resources remains controversial. OBJECTIVE:To assess the cost-effectiveness of chlamydial screening done ac...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-128-4-199802150-00005
更新日期:1998-02-15 00:00:00
abstract::We performed selective venous catheterization and sampling for ACTH in six patients with ACTH-secreting pituitary adenomas (Cushing's disease) and four patients with occult ectopic ACTH-secreting neoplasms. In five patients with Cushing's disease in whom the inferior petrosal sinus could be catheterized, ACTH levels w...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-94-5-647
更新日期:1981-05-01 00:00:00
abstract::The mechanisms of flushing reactions are pharmacologically and physiologically heterogeneous. Flushing may result from agents acting directly on the vascular smooth muscle or may be mediated by vasomotor nerves. Vasomotor nerves may lead to flushing as a result of events at both peripheral and central sites. In suscep...
journal_title:Annals of internal medicine
pub_type: 杂志文章,评审
doi:10.7326/0003-4819-95-4-468
更新日期:1981-10-01 00:00:00
abstract:BACKGROUND:Chronic myelogenous leukemia (CML) is an indolent but ultimately fatal disease. Because the natural history of CML varies and quality of life with CML may be excellent until shortly before death, deciding whether and when to pursue unrelated donor bone marrow transplantation is often difficult. OBJECTIVE:To...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-127-12-199712150-00005
更新日期:1997-12-15 00:00:00
abstract:BACKGROUND:Although some studies suggest that access to cardiac procedures may differ by sex, others have found no evidence of gender bias in cardiac care. OBJECTIVE:To study rates of percutaneous coronary intervention (PCI) or coronary artery bypass graft (CABG) surgery in men and women after cardiac catheterization....
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-136-10-200205210-00007
更新日期:2002-05-21 00:00:00
abstract:BACKGROUND:Few treatments for back pain are supported by strong scientific evidence. Conventional treatments, although widely used, have had limited success. Dissatisfied patients have, therefore, turned to complementary and alternative medical therapies and providers for care for back pain. PURPOSE:To provide a rigor...
journal_title:Annals of internal medicine
pub_type: 杂志文章,评审
doi:10.7326/0003-4819-138-11-200306030-00011
更新日期:2003-06-03 00:00:00
abstract::Hearing loss is highly prevalent and may significantly affect how we age. Although the population is aging, relatively few adults receive treatment for hearing loss. Internists are a critical partner to audiologists and otolaryngologists in caring for the adult population with hearing loss. This review provides a prim...
journal_title:Annals of internal medicine
pub_type: 杂志文章,评审
doi:10.7326/AITC202012010
更新日期:2020-12-01 00:00:00
abstract::The presence of a low anion gap in patients with multiple myeloma has recently been emphasized. This has been related to the retention of chloride and bicarbonate anions to offset the cationic charge of the monoclonal immunoglobulins. We now report the presence of a low anion gap in 50 patients with asymptomatic plasm...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-86-3-304
更新日期:1977-03-01 00:00:00
abstract::A recent, widely publicized meta-analysis of 42 clinical trials concluded that rosiglitazone was associated with an approximately 43% increased risk for myocardial infarction and an approximately 64% increased risk for cardiovascular death. The sensitivity of these conclusions to several methodological choices was not...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-147-8-200710160-00182
更新日期:2007-10-16 00:00:00
abstract::Considerable evidence links elevated blood cholesterol levels to the development of atherosclerosis. The National Cholesterol Education Program (NCEP) has recently published revised guidelines for detecting and treating hypercholesterolemia in adults. Included in these guidelines is the recommendation that all adults ...
journal_title:Annals of internal medicine
pub_type: 评论,杂志文章,评审
doi:10.7326/0003-4819-124-5-199603010-00008
更新日期:1996-03-01 00:00:00
abstract:Background:In 1994, 40% of U.S. gun owners who had recently acquired a firearm did so without a background check. No contemporary estimates exist. Objective:To estimate the proportion of current U.S. gun owners who acquired their most recent firearm without a background check, by time since and manner of acquisition, ...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/M16-1590
更新日期:2017-02-21 00:00:00
abstract:BACKGROUND:Leukotriene-receptor antagonists (LTRAs) are recommended as an alternative treatment in patients with mild asthma, but their effect compared with placebo is unclear. PURPOSE:To determine the benefits and harms of LTRAs as monotherapy or in combination with inhaled corticosteroids compared with placebo in ad...
journal_title:Annals of internal medicine
pub_type: 杂志文章,meta分析,评审
doi:10.7326/M15-1059
更新日期:2015-11-17 00:00:00
abstract:BACKGROUND:Endoscopic retrograde cholangiopancreatography (ERCP) is a technically demanding procedure that can cause substantial complications. Competence in performing ERCP and the learning curve for achieving competence are poorly understood. OBJECTIVE:To evaluate the number of supervised ERCPs that physicians must ...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-125-12-199612150-00009
更新日期:1996-12-15 00:00:00
abstract:BACKGROUND:No effective oral therapy exists for early coronavirus disease 2019 (COVID-19). OBJECTIVE:To investigate whether hydroxychloroquine could reduce COVID-19 severity in adult outpatients. DESIGN:Randomized, double-blind, placebo-controlled trial conducted from 22 March through 20 May 2020. (ClinicalTrials.gov...
journal_title:Annals of internal medicine
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.7326/M20-4207
更新日期:2020-10-20 00:00:00
abstract::Axial, dual spin-echo magnetic resonance (MR) images, taken at the level of the pulmonary arteries and gated to the cardiac cycle, were qualitatively and quantitatively evaluated in nine patients with primary pulmonary arterial hypertension and six controls. In controls and patients, intravascular signal intensity was...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-103-3-317
更新日期:1985-09-01 00:00:00
abstract:BACKGROUND:Use of proton-pump inhibitors in the management of peptic ulcer bleeding is controversial because discrepant results have been reported in different ethnic groups. OBJECTIVE:To determine whether intravenous esomeprazole prevents recurrent peptic ulcer bleeding better than placebo in a multiethnic patient sa...
journal_title:Annals of internal medicine
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.7326/0003-4819-150-7-200904070-00105
更新日期:2009-04-07 00:00:00
abstract:BACKGROUND:Even with optimal pharmacotherapy, symptomatic heart failure is associated with substantial morbidity and mortality. PURPOSE:To determine the efficacy and safety of cardiac resynchronization therapy in adults with advanced systolic heart failure. DATA SOURCES:The Cochrane Central Register of Controlled Tri...
journal_title:Annals of internal medicine
pub_type: 杂志文章,meta分析,评审
doi:10.7326/0003-4819-141-5-200409070-00101
更新日期:2004-09-07 00:00:00
abstract::The earthquake that struck Haiti in January 2010 caused an estimated 230,000 deaths and injured approximately 250,000 people. The Israel Defense Forces Medical Corps Field Hospital was fully operational on site only 89 hours after the earthquake struck and was capable of providing sophisticated medical care. During th...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-153-1-201007060-00253
更新日期:2010-07-06 00:00:00
abstract:BACKGROUND:Successful outcomes after cardiopulmonary resuscitation remain disappointingly infrequent, in animal studies, administration of exogenous vasopressin during closed- and open-chest cardiopulmonary resuscitation has recently been shown to be more effective than optimal doses of epinephrine in improving vital o...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-124-12-199606150-00006
更新日期:1996-06-15 00:00:00
abstract:OBJECTIVE:To explore how frequently physicians lose medical malpractice cases despite providing standard care and to assess whether severity of patient injury influences the frequency of plaintiff payment. DESIGN:Retrospective cohort study. SETTING:Physicians from the state of New Jersey insured by one insurance comp...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-117-9-780
更新日期:1992-11-01 00:00:00
abstract::Abdominal aortic aneurysms (AAAs) occur in 1 of 20 older men, remain asymptomatic for many years, and, if left untreated, cause death from rupture in about one third of patients. Ultrasonography is a suitable screening test for AAA, and elective repair can prevent rupture. Although these features suggest a promising t...
journal_title:Annals of internal medicine
pub_type: 杂志文章,评审
doi:10.7326/0003-4819-139-6-200309160-00016
更新日期:2003-09-16 00:00:00
abstract::To describe more explicitly the components of competence required of the internist, The American Board of Internal Medicine has analyzed the medical encounter and defined the major variables involved: the abilities required of the internist, the tasks that must be performed to solve a medical problem, the medical illn...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-90-3-402
更新日期:1979-03-01 00:00:00
abstract::Intravenous drug users are the second largest risk group for the acquired immunodeficiency syndrome (AIDS) and a bridge to two other groups: children and heterosexual partners. In the absence of effective treatment or vaccines, control of the epidemic among drug users will rely on efforts to reduce needle sharing. How...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-103-5-755
更新日期:1985-11-01 00:00:00
abstract::Adult salicylate intoxication has been considered to be easily recognized and assciated with low morbidity and mortality. In the present study of 73 consecutive adults hospitalized with salicylate intoxication, 27% of patients were undiagnosed for as long as 72 h after admission. The initial physical findings and labo...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-85-6-745
更新日期:1976-12-01 00:00:00
abstract::HLA-B27 is a transplantation antigen found in a high proportion of patients with ankylosing spondylitis. Recently, an association has been shown to exist between HLA-B27 and acute uveitis, even in the absence of ankylosing spondylitis. We have examined the HLA antigen profile of 45 patients with acute nongranulomatous...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-85-5-606
更新日期:1976-11-01 00:00:00
abstract::As a result of important advances in medical imaging, the oral cholecystogram is no longer the primary test of gallbladder function and anatomy. Real-time ultrasonography and cholescintigraphy, both highly sensitive and specific tests, are the two major methods for assessing gallbladder pathology. Oral cholecystograph...
journal_title:Annals of internal medicine
pub_type: 杂志文章,评审
doi:10.7326/0003-4819-109-9-722
更新日期:1988-11-01 00:00:00
abstract::A lack of national health goals has allowed physician manpower policy to be dominated by an expansionist philosophy. Scarce resources have been channeled into the production of specialist physicians trained to provide complex and expensive care for uncommon diseases, using other scare and expensive resources and addin...
journal_title:Annals of internal medicine
pub_type: 杂志文章,评审
doi:10.7326/0003-4819-90-2-249
更新日期:1979-02-01 00:00:00