Nearly One in 10 Patients With PCI Readmits Within 30 Days

Patients readmitted within 30 days have significantly increased risk of one-year mortality

MONDAY, Nov. 28 (HealthDay News) -- About one in 10 patients undergoing percutaneous coronary intervention (PCI) are readmitted within 30 days; and 30-day readmission is associated with an increased risk of one-year mortality, according to a study published online Nov. 28 in the Archives of Internal Medicine.

Farhan J. Khawaja, M.D., from the Mayo Clinic and Mayo Foundation in Rochester, Minn., and colleagues investigated the factors associated with 30-day readmission rates after PCI. The adjusted association between 30-day readmission and demographic, clinical, and procedural variables was estimated in 15,498 PCI hospitalizations from January 1998 through June 2008, using multivariate logistic regression models. The correlation between 30-day readmission and one-year mortality was estimated, with readmission as a time-dependent covariate.

The investigators found that, within 30 days after discharge, 9.4 and 0.68 percent of PCIs were readmitted and resulted in death, respectively. An increased risk of 30-day readmission after PCI was associated with female gender, Medicare insurance, education below high school level, unstable angina, cerebrovascular accident or transient ischemic attack, moderate to severe renal disease, chronic obstructive pulmonary disease, metastatic cancer, and more than a three-day length of stay, after multivariable analysis. Patients who were readmitted within 30 days of discharge were at a significantly increased risk of one-year mortality, compared with those who were not readmitted (adjusted hazard ratio, 1.38).

"Nearly one in 10 patients undergoing PCI were readmitted within 30 days," the authors write.

One of the study authors disclosed financial ties to the health care and medical technology industries.

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