Andrew Smith

A new study of atrial fibrillation patients who require regular dialysis found more episodes of irregular heartbeat on dialysis days - particularly when dialysis was actually taking place - than at other times.

Lower testosterone levels may lead men to have less sex with fewer partners, but a new study suggests low levels in both men and women may also increase relationship quality overall.

New data from the ORBIT-AF registry indicate that obstructive sleep apnea increases the chance of hospitalization and major bleeding for people with atrial fibrillation.

New research may explain how and why low in utero testosterone exposure reduces testosterone levels in adult men and increases their consequent risks of obesity, diabetes, and heart disease.

A new study from the University of North Texas Health Science Center suggests that testosterone replacement therapy may damage brain function in some white men, but not in men of Mexican heritage.

Study shows no correlation between stroke risk among atrial fibrillation patients and the likelihood that they'd receive prescriptions for risk-reducing medication during hospitalization.

Study results show testosterone therapy reduces total cholesterol, low-density lipoprotein cholesterol, and triglycerides while boosting high-density lipoprotein cholesterol.

Study results show older patients who use ibuprofen and other prescription and over-the-counter NSAIDs are at increased risk for atrial fibrillation.

Changes to the recommended use of various medications and catheter ablations rank among the highlights of comprehensive new guidelines for the treatment of patients with atrial fibrillation.

Critics allege several major errors in the results of a study that found testosterone therapy is associated with an increased risk for myocardial infarction and stroke.

Some experts are concerned that efforts to legalize medical marijuana may lead to an increase in the incidence of low testosterone and related conditions such as gynecomastia.

Subanalysis of a study comparing warfarin and apixaban in patients with atrial fibrillation found that uncontrolled hypertension increased the risk of stroke or systemic embolism in these patients.

Data show improved survival rates and other outcomes are associated with rapid response when cardiac emergencies occur.

The device uses sensors to warn of impending heart attack and can stimulate cardiac muscle in patients with atrial fibrillation or other rhythm disorders.

Minimally invasive surgical technique for patients with atrial fibrillation who cannot tolerate standard anticoagulant therapy uses sutures to tie off the left atrial appendage and offers increased stroke protection.

The US Food and Drug Administration (FDA) has approved a new ablation catheter billed by its maker as the first such device on the U.S. market "that enables direct and real-time measurement of contact force" during procedures.

Study finds a lower rate of recurrent atrial tachyarrhythmias among patients with paroxysmal atrial fibrillation who underwent radiofrequency catheter ablation as a first-line treatment rather than taking antiarrhythmic drugs.

Study results show that a three-month course of colchicine can significantly reduce the recurrence of atrial fibrillation after catheter ablation.

Researchers say that new insight into the microbiome will lead to new opportunities for treating a variety of medical conditions, both within and outside the gut.

Physicians today take postoperative pain more seriously, and treat it more effectively, than ever before. But pain specialists say new medications and new research make it possible to do even better-if clinicians remember two important concepts.

Recently adopted diagnostic criteria can help primary care physicians assess patients for this rare and painful condition.

Back pain sends more people to the doctor than any other condition except the common cold, but similar symptoms shared by several different conditions make it difficult for many physicians to properly diagnose a lumbar disc herniation.

Specialists may differ on the nuances of treatment protocol when it comes to treating shingles (herpes zoster) and postherpetic neuralgia, but many agree on broad principles that can help primary care physicians diagnose and treat both conditions.

Should physicians prescribe opioids to patients suffering from pain associated with fibromyalgia. If they decide to do so, how can they tell which patients will benefit?