(American College of Physicians-American Society of Internal Medicine)-- A study of Medicare and other government records of 130,099 elderly heart attack patients found that those with kidney disease were at much higher risk for death than other elderly heart attack patients during the month following hospitalization.

One-year death rates for those with moderate kidney disease were 66 percent and for those with mild kidney disease was 46 percent, compared to 24 percent for those with no kidney disease. People with moderate kidney disease received some proven heart attack treatments much less often than those with no kidney disease.

Another study of 3,106 people with kidney disease who were hospitalized for heart attack found that they received less-aggressive cardiac treatment and were at increased risk for death from heart attack. Even mild kidney disease was linked to poor outcomes after heart attack.

An editorial says that these studies reinforce the fact that patients with reduced kidney function are at higher risk for death after a heart attack.

Physicians should use all available treatments to prevent heart disease in kidney patients, and, when a kidney patient has a heart attack, should treat it aggressively, the writer says.