Heart Rhythm

Hearts should have normal rhythm to their beats, but when these beats are out of synch, it causes inefficient pumping of blood. Irregular heart arrhythmias occur when the electrical signals that coordinate the heart's beats do not work properly. This can cause beats that are too fast (tachycardia), or too slow (bradycardia). Tachycardias include atrial fibrillation (AFib), supraventricular tachycardia, ventricular fibrillation, and ventricular tachycardia (VT). Bradycardias include sick sinus syndrome and conduction block. Electrophysiology arrhythmia treatments include medications, life style changes, and the EP lab interventions of catheter ablation, and implantable pacemakers or defibrillators.

AIM: Model shows scenarios for dabigatran's cost effectiveness

Dabigatran, a fixed-dose, oral direct thrombin inhibitor, may be a cost-effective alternative to warfarin therapy in atrial fibrillation patients who are 65 years of age or older, according to a modeled analysis published in the Nov. 2 issue of the Annals of Internal Medicine.

AJR: Remote CTC reading boosts colon cancer screening

CT colonography (CTC) can increase colorectal cancer screening capacity in rural underserved communities by pairing local CT scanning with remote interpretation, according to a study in the November issue of the American Journal of Roentgenology.

SAFARI registry seeks to clear path in AF jungle

The FDA, in conjunction with other organizations, has initiated the Safety of Atrial Fibrillation Ablation Registry Initiative (SAFARI), which will help define clinical practice of long-term persistent atrial fibrillation (AF) ablation, according to a paper published in this month's American Heart Journal.

Astellas Pharma/Cardiome stop enrollment of ACT 5 trial

Astellas Pharama U.S., a co-development partner of Cardiome Pharma, has suspended patient enrollment for the ACT 5 study evaluating the safety and efficacy of vernakalant hydrochloride (Kynapid) injection, after cardiogenic shock occurred in an atrial fibrillation patient receiving the drug.

HRJ: Diabetic sudden death risk post-MI challenges ICD guidelines

Having type 2 diabetes is an independent risk factor for sudden cardiac death after experiencing an MI, according to research published in the October issue of HeartRhythm. But whether guidelines for implantable cardioverter-defibrillators (ICDs) in these patients need to be revised requires more study.

Q&A: We have an obligation to share what we have learned

St. Francis Hospital, a 395-bed healthcare facility in Wilmington, Del., has long been involved in the Delaware Health Information Network (DHIN). DHIN, the first statewide health information exchange (HIE) in the U.S., went live in the spring of 2007; last month, St. Francis began sending data to the network. Brian McDonough, MD, CMIO of St. Francis, recently talked with CMIO about the effort to exchange information, bring physician practices on board and share the HIE experience with other healthcare organizations.

FDA approves Pradaxa for stroke prevention in a-fib patients

The FDA has approved dabigatran etexilate (Pradaxa, Boehringer Ingelheim Pharmaceuticals) for the prevention of stroke and blood clots in patients with non-valvular atrial fibrillation, permitting the first pharmaceutical alternative to warfarin on the U.S. market.

Q&A: Secure image exchange may be closer than you think

Exchanging diagnostic images presents a new dimension of interoperability challenges. However, if all goes according to plan, there will be a secure, open-source image exchange framework on display at RSNA next month, said David S. Mendelson, MD, FACR, who is principal investigator for a National Institute of Biomedical Imaging and Bioengineering/National Institutes of Health contract to set up the framework through RSNA using IHE (Integrating the Healthcare Enterprise) profiles.

Around the web

Ron Blankstein, MD, professor of radiology, Harvard Medical School, explains the use of artificial intelligence to detect heart disease in non-cardiac CT exams.

Eleven medical societies have signed on to a consensus statement aimed at standardizing imaging for suspected cardiovascular infections.

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