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 - heart geometry

Keeping patients with atrial fibrillation on rather than off warfarin therapy during radiofrequency catheter ablation reduced the risk of periprocedural stroke in a randomized trial. The results were published online April 17 in Circulation.

 - healthcare cost

Congestive heart failure topped the list for 30-day readmissions of Medicare beneficiaries in 2011 and ranked among the top 10 high-volume conditions for two other payer categories in an analysis released in April.

 - Emergency

Location, location, location. Almost 60 percent of variation in hospital readmissions may be attributed to the county where a hospital resides, according to a study published online April 9 in Health Services Research. The findings challenge Medicare’s use of financial penalties for hospitals with higher than expected readmission rates.

 - brain, stroke

The rates of CT perfusion and CT angiogram for acute ischemic stroke markedly increased from 2006 to 2010 and both modalities were associated with increased reperfusion therapy use, according to a study published in the April issue of Stroke

 - child

Fifteen of the 25 high-risk devices approved by the FDA between 2008 and 2011 for use in children were cardiovascular therapeutics, with approval for 22 of the 25 devices based on studies that enrolled patients 18 years and older, according to a study published online April 14 in Pediatrics.