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Ventilators Biggest Risk Factor For Pneumonia After Heart Surgery, Study Finds

Date:
May 6, 2009
Source:
Critical Care
Summary:
Ventilator-associated pneumonia is the main cause of nosocomial infection in patients undergoing major heart surgery. An international study of 25 hospitals from 8 European countries has confirmed the degree of danger posed by VAP and identified the main risk factors.

Ventilator-associated pneumonia (VAP) is the main cause of nosocomial infection in patients undergoing major heart surgery. An international study of 25 hospitals from 8 European countries has confirmed the degree of danger posed by VAP and identified the main risk factors.

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Javier Hortal, from the Hospital General Universitario Gregorio Marañón, worked with the European Study Group on Nosocomial Infections (ESGNI) and the European Workgroup of Cardiothoracic Intensivists (EWCI) to carry out a prospective study of 971 patients undergoing major heart surgery. They found that 4.4% acquired some form of nosocomial infection and VAP accounted for almost half of these (2.1%). According to Hortal, "The crude mortality rate of patients with VAP in our study was found to be 35%, this is significantly more than the mortality rate of 2.3% seen in patients who avoided VAP. The overall mortality rate for VAP in patients undergoing MHS may be as high as 16-57%, but many critically ill patients with VAP die because of their underlying disease rather than of pneumonia, which makes analysis difficult."

The authors found that, apart from the amount of time spent on mechanical ventilation, other risk factors for the development of VAP included transfusion requirements, type of surgery and the need for re-intervention for haemorrhage or cardiac tamponade in the immediate postoperative period. Hortal said, "Most unfortunately, the majority of the variables that significantly predict VAP are not amenable to intervention."

The authors recommend that anticipative or pre-emptive antimicrobial therapy should be explored as one of the few potential interventions to avoid VAP in patients remaining under mechanical ventilation for more than 48 hours.


Story Source:

The above story is based on materials provided by Critical Care. Note: Materials may be edited for content and length.


Journal Reference:

  1. Javier Hortal, Patricia Muñoz, Gregorio P Cuerpo, Héctor Litvan, Peter M Rosseel, Emilio Bouza, the European Study Group on Nosocomial Infections and the European Workgroup of Cardiothoracic Intensivists. Ventilator-associated pneumonia in patients undergoing major heart surgery: an incidence study in Europe. Critical Care, (in press)

Cite This Page:

Critical Care. "Ventilators Biggest Risk Factor For Pneumonia After Heart Surgery, Study Finds." ScienceDaily. ScienceDaily, 6 May 2009. <www.sciencedaily.com/releases/2009/04/090429205601.htm>.
Critical Care. (2009, May 6). Ventilators Biggest Risk Factor For Pneumonia After Heart Surgery, Study Finds. ScienceDaily. Retrieved October 25, 2014 from www.sciencedaily.com/releases/2009/04/090429205601.htm
Critical Care. "Ventilators Biggest Risk Factor For Pneumonia After Heart Surgery, Study Finds." ScienceDaily. www.sciencedaily.com/releases/2009/04/090429205601.htm (accessed October 25, 2014).

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