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Research: MRSA Infection Linked to High Mortality

by Kathy Jones on September 13, 2010 at 7:33 PM
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 Research: MRSA Infection Linked to High Mortality

A MRSA infection with a reduced susceptibility to the antibiotic drug vancomycin is linked to high mortality, scientists have revealed.

A Henry Ford Hospital study has found that patients who contracted a MRSA infection with heteroresistance, called hVISA, stayed in the hospital longer, were more likely to have the infection return after 90 days, and were twice as likely to die from it after 90 days than patients who do not have hVISA.

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"Based on our findings, we recommend that hospitals consider routine testing for hVISA," said Katherine Reyes of Henry Ford Hospital and the study's lead author.

"It remains controversial how differently we will manage these patients upfront. Close follow-up on these patients to make sure their infection is resolved or controlled may save lives," she said.
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The study followed 521 patients with MRSA bloodstream infections who were admitted between January 2006 to September 2009 to Henry Ford, an 805-bed tertiary care hospital, education and research complex in Detroit.

These infections were screened for heteroresistance, and 19 hVISA cases were identified.

Reyes and researchers then compared characteristics and outcomes of the 19 hVISA patients against 19 non-hVISA patients, eliminating such factors as age, source of infection and level of sickness.

They found that six hVISA patients died within 30 days compared to three non-hVISA patients. Also, five hVISA patients saw their infection return after 90 days compared to zero for non-hVISA patients.

The study also found that hVISA patients stayed on average four more days in the hospital than non-hVISA patients and were more likely to have received vancomycin in the past.

The study was presented at the 50th annual Interscience Conference on Antimicrobial Agents and Chemotherapy in Boston.

Source: ANI
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