Undiagnosed COPD may change heart function before heart attacks occur by Michele B. Sullivan Screening patients admitted for acute coronary syndromes with respiratory measures could identify those at risk for undiagnosed COPD. Source: COPD: Journal of Chronic Obstructive Pulmonary Disease Other top stories: Medical societies urge action to reduce gun violence Comprehensive criminal background checks for all firearm purchases, freedom to counsel patients are key asks. Lancet joins movement to reject 'manels' The Lancet Groups also issued a diversity pledge, aiming to include more women, people of color, and colleagues from lower-and middle-income countries. Sleep disorder treatment tied to lower suicide attempt risk in veterans Previous research has explored the link between sleep disturbances and suicide attempts, but less has been done to look at specific sleep problems. White and black patients have similar rates of giant cell arteritis A new study with a larger sample size of black individuals puts previous findings into question. You can contact the MDedge Daily Medical News by emailing us at email@example.com or following us on Twitter at @MDedgeTweets.