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In the Literature

The Hospitalist. 2009 June;2009(06):

Literature at a Glance

A guide to this month’s studies

Clinical Shorts

DRONEDARONE USE IN ATRIAL FIBRILLATION REDUCES CARDIOVASCULAR EVENTS

In the ATHENA trial, dronedarone decreased rates of first hospitalization due to cardiovascular events and death (31.9% vs. 39.4%) in atrial fibrillation without increasing pulmonary or thyroid toxicity.

Citation: Hohnloser SH, Crijns HJ, van Eickels M, et al. Effect of dronedarone on cardiovascular events in atrial fibrillation. N Engl J Med. 2009;360(7):668-678.

CENTRAL-LINE-RELATED MRSA BLOODSTREAM INFECTIONS (BSI) DECREASING IN U.S.

CDC analysis from 1997-2007 reveals a 49.6% decrease in the actual incidence of MRSA central-line-associated BSI but a 25.8% increase in the proportion of MRSA in comparison with MSSA.

Citation: Burton DC, Edwards JR, Horan TC, Jernigan JA, Fridkin SK. Methicillin-resistant Staphylococcus aureus central line-associated bloodstream infections in US intensive care units, 1997-2007. JAMA. 2009;301(7):727-736.

MULTIVITAMIN USE IN POSTMENOPAUSAL WOMEN SHOWS NO MEANINGFUL BENEFIT

Large cohort study fails to explain the rationale for widespread multivitamin use, because long-term use did not significantly impact risk for common cancers, cardiovascular disease, or mortality.

Citation: Neuhouser ML, Wassertheil-Smoller S, Thomson C, et al. Multivitamin use and risk of cancer and cardiovascular disease in the Women’s Health Initiative cohorts. Arch Intern Med. 2009;169(3):294-304.

PREVIOUS FLUCONAZOLE EXPOSURE LINKED TO RESISTANT CANDIDA GLABRATA BSI

In this case-control study, fluconazole and linezolid were coined as independent risk factors for subsequent fluconazole-resistant Candida glabrata BSI, while cefepime and metronidazole increased the risk for susceptible glabrata BSI.

Citation: Lee I, Fishman NO, Zaoutis TE, et al. Risk factors for fluconazole-resistant Candida glabrata bloodstream infections. Arch Intern Med. 2009;169(4):379-383.

PHYSICIANS’ RISK STRATIFICATION CORRELATED POORLY WITH VALIDATED CARDIAC RISK SCORES IN PATIENTS WITH NSTEMI

Multicenter study reveals that clinical risk stratification in non-ST elevation myocardial infarction (NSTEMI) conflicted with objective cardiac risk scores, was uninfluenced by prognosticators like heart failure and creatinine, and perpetuated under-recognition of risk.

Citation: Yan AT, Yan RT, Huynh T, et al. Understanding physicians’ risk stratification of acute coronary syndromes: insights from the Canadian ACS 2 Registry. Arch Intern Med. 2009;169(4):372-378.

HANDHELD ULTRASOUND CAN SUPPLEMENT HOSPITALISTS’ CARDIAC EXAMINATION

In a blinded interventional study, hospitalists’ training in basic echocardiography improved assessment of lower ventricular dysfunction (46% to 59%), cardiomegaly, and pericardial effusions, but not valvular lesions.

Citation: Martin LD, Howell EE, Ziegelstein RC, et al. Hand-carried ultrasound performed by hospitalists: does it improve the cardiac physical examination? Am J Med. 2009;122(1):35-41.

REDUCED-CALORIE DIETS, IRRESPECTIVE OF RELATIVE CARBOHYDRATE, FAT, OR PROTEIN PROPORTIONS, ARE EFFECTIVE IN WEIGHT LOSS

Randomized controlled trial of 811 patients showed that reduced-calorie diets with different macronutrient compositions promoted clinically significant and similar weight loss. Weight loss was strongly predicted by group-

session attendance.

Citation: Sacks FM, Bray GA, Carey VJ, et al. Comparison of weight-loss diets with different compositions of fat, protein, and carbohydrates. N Engl J Med. 2009;360(9):859-873.

PATIENTS’ ABILITY TO CORRECTLY IDENTIFY THEIR INPATIENT PHYSICIAN DEPENDS ON DISSATISFACTION OF CARE

In a prospective survey, patient (age, race, education) and system level (teaching service) factors influenced correct physician identification; those who could not were more likely to be unsatisfied with their care.

Citation: Arora V, Gangireddy S, Mehrotra A, Ginde R, Tormey M, Meltzer D. Ability of hospitalized patients to identify their in-hospital physicians. Arch Intern Med. 2009;169(2):199-201.

Inhaled Corticosteroid Use in COPD Associated with Increased Pneumonia Risk

Clinical question: Does long-term use of inhaled corticosteroids in chronic obstructive pulmonary disease (COPD) increase the risk of developing pneumonia?