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 Trials (2002, volume 4), MEDLINE (1980-2003), EMBASE (1980-2003), other electronic databases, and U.S. Food and Drug Administration reports. We contacted primary study authors and device manufacturers, and we hand searched bibliographies of relevant papers and conference proceedings. STUDY SELECTION:Randomized, controlled clinical trials for efficacy and controlled trials plus prospective cohort studies for safety. DATA EXTRACTION:Two reviewers chose studies and extracted data independently; random-effects models were used for analyses. DATA SYNTHESIS:Nine trials were included in the efficacy review (3216 patients). All trial participants had reduced ejection fraction and prolonged QRS duration, and 85% had New York Heart Association (NYHA) class III or IV symptoms. Cardiac resynchronization therapy improved ejection fraction (weighted mean difference, 0.035 [95% CI, 0.015 to 0.055]), quality of life (weighted mean reduction in score on the Minnesota Living with Heart Failure Questionnaire, 7.6 points [CI, 3.8 to 11.5 points]), and function (58% vs. 37% of patients improved by at least 1 NYHA class). Heart failure hospitalizations were reduced by 32% (relative risk [RR], 0.68 [CI, 0.41 to 1.12]), with benefits most marked in patients with NYHA class III or IV symptoms at baseline (RR, 0.65 [CI, 0.48 to 0.88]; number needed to treat for benefit [NNT(B)], 12). All-cause mortality was reduced by 21% (RR, 0.79 [CI, 0.66 to 0.96]; NNT(B), 24), driven largely by reductions in death from progressive heart failure (RR, 0.60 [CI, 0.36 to 1.01]). Eighteen studies (total of 3701 patients with cardiac resynchronization devices) were included in the safety review. Implant success rate was 90% (CI, 89% to 91%), and 0.4% of patients died during implantation (CI, 0.2% to 0.7%). Over a median 6-month follow-up, leads dislodged in 9% of patients (CI, 7% to 10%) and mechanical malfunctions occurred in 7% (CI, 5% to 8%). LIMITATIONS:These trials enrolled only patients with heart failure with NYHA class III or IV symptoms despite medical therapy, a prolonged QRS duration, and reduced ejection fraction; in addition, experienced providers implanted the devices. Because all but one of these trials randomly assigned patients after device implantation, their results may overestimate the potential benefits of cardiac resynchronization. Finally, since few patients in these trials had bradyarrhythmias or atrial fibrillation, the role of cardiac resynchronization in such patients is uncertain. CONCLUSIONS:In selected patients with heart failure, cardiac resynchronization therapy improves functional and hemodynamic status, reduces heart failure hospitalizations, and reduces all-cause mortality.
journal_name
Ann Intern Medjournal_title
Annals of internal medicineauthors
McAlister FA,Ezekowitz JA,Wiebe N,Rowe B,Spooner C,Crumley E,Hartling L,Klassen T,Abraham Wdoi
10.7326/0003-4819-141-5-200409070-00101subject
Has Abstractpub_date
2004-09-07 00:00:00pages
381-90issue
5eissn
0003-4819issn
1539-3704pii
0000605-200409070-00101journal_volume
141pub_type
杂志文章,meta分析,评审abstract:BACKGROUND:National guidelines recommend that physicians discuss end-of-life (EOL) care planning with patients with cancer whose life expectancy is less than 1 year. OBJECTIVE:To evaluate the incidence of EOL care discussions for patients with stage IV lung or colorectal cancer and where, when, and with whom these dis...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-156-3-201202070-00008
更新日期:2012-02-07 00:00:00
abstract:BACKGROUND:Opioids are frequently prescribed for acute musculoskeletal injuries and may result in long-term use and consequent harms. PURPOSE:To explore factors associated with persistent opioid use after its prescription for acute musculoskeletal injury. DATA SOURCES:Searches of multiple electronic databases, withou...
journal_title:Annals of internal medicine
pub_type: 杂志文章,meta分析
doi:10.7326/M19-3600
更新日期:2020-11-03 00:00:00
abstract:OBJECTIVE:To evaluate the risk for chronic renal disease associated with regular use of nonaspirin nonsteroidal anti-inflammatory drugs (NSAIDs). DESIGN:Multicenter case-control study. PATIENTS:Patients were 554 North Carolina residents (age range, 30 to 79 years) hospitalized between 1980 and 1982 with a discharge d...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-115-3-165
更新日期:1991-08-01 00:00:00
abstract:PURPOSE:To review available information on the epidemiology, cause, diagnosis, prognosis, and treatment of acute myocardial infarction during pregnancy or in the early postpartum period and to develop guidelines for the management of this condition. DATA SOURCES:MEDLINE and Index Medicus searches and a manual search o...
journal_title:Annals of internal medicine
pub_type: 杂志文章,评审
doi:10.7326/0003-4819-125-9-199611010-00009
更新日期:1996-11-01 00:00:00
abstract:OBJECTIVE:To evaluate the 6-month change in cardiovascular (coronary heart disease) risk as a function of diet and drug therapy for mild hypertension. DESIGN:Collaborative randomized, controlled clinical trial to assess the efficacy of alternative regimens in treating mild hypertension. SETTING:Three university-based...
journal_title:Annals of internal medicine
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.7326/0003-4819-112-2-89
更新日期:1990-01-15 00:00:00
abstract::The approximately 1.2 million inmates in U.S. correctional institutions have a high prevalence of communicable diseases, such as human immunodeficiency virus (HIV) infection, tuberculosis, hepatitis B virus infection, and gonorrhea. Before their incarceration, most inmates had limited access to health care, which, tog...
journal_title:Annals of internal medicine
pub_type: 杂志文章,评审
doi:10.7326/0003-4819-118-2-199301150-00010
更新日期:1993-01-15 00:00:00
abstract::Thyroid antibodies were found significantly more often in insulin-dependent diabetics than in their spouses or in non-insulin-dependent diabetics. The poor correlation between presence of thyroid autoimmunity and duration of disease and the significantly increased prevalence of thyroid antibodies in first-degree relat...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-83-2-170
更新日期:1975-08-01 00:00:00
abstract::Dietary deficiency of vitamin B-12 has been reported, yet most people ingesting vitamin-B12-deficient diets even for many years appear to achieve a balance that does not lead to overt signs and symptoms of deficiency. I present the case of a vegan of 25 years' duration who developed severe neurologic abnormalities due...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-88-5-647
更新日期:1978-05-01 00:00:00
abstract::Chronic lymphocytic leukemia developed in four of five siblings, whose father succumbed to the same disease. The pattern of immune deficiency in the leukemic siblings resembled that found in nonfamilial cases of chronic lymphocytic leukemia, and was correlated with the severity of clinical involvement. In three siblin...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-84-5-554
更新日期:1976-05-01 00:00:00
abstract:STUDY OBJECTIVE:To determine the sensitivity of herpes simplex virus isolates to acyclovir and the importance of resistant isolates in hospitalized patients. DESIGN:Retrospective incidence cohort study. SETTING:All herpes simplex virus isolates cultured over 1 year from patients followed at a tertiary care center. P...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-76-3-112-6-416
更新日期:1990-03-15 00:00:00
abstract::In September 1978, cases of hepatitis B in two patients treated by the same dentist led to investigation of a dental practice in Baltimore, Maryland. The dentist had had acute hepatitis B in June 1978 and had remained positive for hepatitis B surface antigen and hepatitis B e antigen over the ensuing 6 months. He had ...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-95-2-133
更新日期:1981-08-01 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:PURPOSE:To develop a clinical perspective on bilateral massive adrenal hemorrhage and an algorithm for its diagnosis and treatment. DATA IDENTIFICATION:Case reports were identified through a computer search using MEDLIN (1976 to 1987), and from bibliographies in review articles (up to 1978). STUDY SELECTION:Twelve re...
journal_title:Annals of internal medicine
pub_type: 杂志文章,评审
doi:10.7326/0003-4819-110-3-227
更新日期:1989-02-01 00:00:00
abstract:BACKGROUND:Smokers with medical illnesses are at particular risk for complications caused by tobacco. Clinical trial data on the effectiveness of triple-combination pharmacotherapy for tobacco dependence treatment in these high-risk smokers are not available. OBJECTIVE:To evaluate extended duration of a triple-medicat...
journal_title:Annals of internal medicine
pub_type: 杂志文章,随机对照试验
doi:10.7326/0003-4819-150-7-200904070-00004
更新日期:2009-04-07 00:00:00
abstract:BACKGROUND:Initiation of antiretroviral therapy (ART) during tuberculosis (TB) treatment remains challenging. PURPOSE:To assess evidence from randomized, controlled trials of the timing of ART initiation in HIV-infected adults with newly diagnosed pulmonary TB. DATA SOURCES:PubMed, EMBASE, Cochrane Central Register o...
journal_title:Annals of internal medicine
pub_type: 杂志文章,meta分析,评审
doi:10.7326/M14-2979
更新日期:2015-07-07 00:00:00
abstract:Background:The 2013 pooled cohort equations (PCEs) are central in prevention guidelines for cardiovascular disease (CVD) but can misestimate CVD risk. Objective:To improve the clinical accuracy of CVD risk prediction by revising the 2013 PCEs using newer data and statistical methods. Design:Derivation and validation ...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/M17-3011
更新日期:2018-07-03 00:00:00
abstract:BACKGROUND:Risk for transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) to close contacts of infected persons has not been well estimated. OBJECTIVE:To evaluate the risk for transmission of SARS-CoV-2 to close contacts in different settings. DESIGN:Prospective cohort study. SETTING:Close con...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/M20-2671
更新日期:2020-12-01 00:00:00
abstract:BACKGROUND:Clinical trial registries are in widespread use to promote transparency around trials and their results. OBJECTIVE:To describe characteristics of drug trials listed in ClinicalTrials.gov and examine whether the funding source of these trials is associated with favorable published outcomes. DESIGN:An observ...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-153-3-201008030-00006
更新日期:2010-08-03 00:00:00
abstract:BACKGROUND:Because clinical diagnosis is inaccurate, objective testing is usually considered necessary when patients present with suspected deep venous thrombosis (DVT). OBJECTIVE:To determine whether a negative result on a quantitative latex D dimer assay eliminates the need for further investigation in patients with...
journal_title:Annals of internal medicine
pub_type: 杂志文章,多中心研究
doi:10.7326/0003-4819-138-10-200305200-00006
更新日期:2003-05-20 00:00:00
abstract:OBJECTIVE:To determine whether diabetic patients, when compared with nondiabetic patients, have a higher incidence of restenosis after coronary stenting, and, if so, whether restenosis is attributable to lesion or procedural differences or to a greater biologic tendency for late loss of minimum diameter in diabetic pat...
journal_title:Annals of internal medicine
pub_type: 杂志文章,多中心研究
doi:10.7326/0003-4819-118-5-199303010-00004
更新日期:1993-03-01 00:00:00
abstract:OBJECTIVE:To describe the prevalence of cognitive impairment among elderly primary care patients and to compare diagnostic evaluations and use of health services among patients with and those without cognitive impairment. DESIGN:Prospective cohort study. SETTING:Academic primary care group practice. PATIENTS:3954 pa...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-122-6-199503150-00004
更新日期:1995-03-15 00:00:00
abstract:OBJECTIVE:To determine the causes of persistent dizziness in outpatients. DESIGN:Consecutive adult outpatients presenting with a chief complaint of dizziness. SETTING:Four clinics (internal medicine, walk-in, emergency room, and neurology) in a teaching hospital. PATIENTS:Of 185 patients presenting during the 10-mon...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-117-11-898
更新日期:1992-12-01 00:00:00
abstract::The insulin-like growth factor (IGF) family of peptides, binding proteins, and receptors are ubiquitous and important for normal human growth and development. Modern techniques including specific radioimmunoassays, radioreceptor assays and recombinant DNA technology have improved our understanding of the role of IGFs ...
journal_title:Annals of internal medicine
pub_type: 杂志文章,评审
doi:10.7326/0003-4819-116-10-854
更新日期:1992-05-15 00:00:00
abstract:OBJECTIVE:To compare generalists' and cardiologists' estimates of baseline cardiovascular risk and the outcomes of preventive therapy. DESIGN:Cross-sectional mail survey using written case simulations of typical patients from primary prevention trials for hypercholesterolemia and isolated systolic hypertension, and te...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-124-4-199602150-00005
更新日期:1996-02-15 00:00:00
abstract:BACKGROUND:Alleviating the problems faced by dying persons and their families has drawn substantial public attention, but little is known about the experience of dying. OBJECTIVE:To characterize the experience of dying from the perspective of surrogate decision makers, usually close family members (89%). DESIGN:Prosp...
journal_title:Annals of internal medicine
pub_type: 杂志文章,多中心研究
doi:10.7326/0003-4819-126-2-199701150-00001
更新日期:1997-01-15 00:00:00
abstract::Relapsing polychondritis, an uncommon, chronic, multisystem disorder characterized by recurrent episodes of inflammation of cartilaginous tissues, can be life-threatening, debilitating, and difficult to diagnose. This review is based on the authors' experience with 36 patients with relapsing polychondritis who were fo...
journal_title:Annals of internal medicine
pub_type: 杂志文章,评审
doi:10.7326/0003-4819-129-2-199807150-00011
更新日期:1998-07-15 00:00:00
abstract:DESCRIPTION:The American College of Physicians (ACP) developed this guideline to present the available evidence on various pharmacologic treatments to prevent fractures in men and women with low bone density or osteoporosis. METHODS:Published literature on this topic was identified by using MEDLINE (1966 to December 2...
journal_title:Annals of internal medicine
pub_type: 杂志文章,实务指引
doi:
更新日期:2008-09-16 00:00:00
abstract:PURPOSE:To review the literature on prevention of intravascular catheter-related infections. DATA SOURCES:The MEDLINE database, conference proceedings, and bibliographies of review articles and book chapters were searched for relevant articles. Primary authors were contacted directly if data were incomplete. STUDY SE...
journal_title:Annals of internal medicine
pub_type: 杂志文章,meta分析
doi:10.7326/0003-4819-132-5-200003070-00009
更新日期:2000-03-07 00:00:00
abstract::Quality improvement (QI) activities can improve health care but must be conducted ethically. The Hastings Center convened leaders and scholars to address ethical requirements for QI and their relationship to regulations protecting human subjects of research. The group defined QI as systematic, data-guided activities d...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-146-9-200705010-00155
更新日期:2007-05-01 00:00:00
abstract:OBJECTIVE:To determine the effect of the presence of a patent foramen ovale on the right-to-left shunt in patients with respiratory failure who receive positive end-expiratory pressure (PEEP). DESIGN:Convenience sample with randomized application of PEEP. SETTING:General intensive care unit of a university teaching h...
journal_title:Annals of internal medicine
pub_type: 杂志文章
doi:10.7326/0003-4819-119-9-199311010-00004
更新日期:1993-11-01 00:00:00