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Saps II-Predicted Mortality in Ventilated Patients with Respiratory Acinetobacter baumannii Alone vs. Negative Culture | OMICS International | Abstract
ISSN: 2161-0703

Journal of Medical Microbiology & Diagnosis
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Research Article

Saps II-Predicted Mortality in Ventilated Patients with Respiratory Acinetobacter baumannii Alone vs. Negative Culture

Li-Cher Loh1*, Charity Tien-Jen Yii2 and Jenny May-Geok Tong3

1Department of Medicine, Penang Medical College, Penang, Malaysia

2Department of Medicine, International Medical University, Kuala Lumpur, Malaysia

3Department of Anaesthesia and Critical Care, Hospital Tuanku Jaafar, Negeri Sembilan, Malaysia

*Corresponding Author:
Li-Cher Loh
Department of Medicine
Penang Medical College
Jalan Sepoy Lines, Penang 10450, Malaysia
Tel: +604-226- 3459
Fax: +604- 227- 6529
E-mail: [email protected]

Received Date: December 10, 2011; Accepted Date: February 09, 2012; Published Date: February 13, 2012

Citation: Loh LC, Yii CTJ, Tong JMG (2012) Saps II-Predicted Mortality in Ventilated Patients with Respiratory Acinetobacter baumannii Alone vs. Negative Culture. J Medical Microbiol Diagnosis 1:105. doi: 10.4172/2161-0703.1000105

Copyright: © 2012 Loh LC, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

Background: In ventilated patients already critically ill, isolation of Acinetobacter baumannii from lower respiratory tract may have clinical importance and the differentiation between infection and colonization can be difficult.

Aim: We sought to overcome the confounding element of critical illness by using Simplified Acute Physiology score (SAPS II) to predict mortality risk and comparing this in critically ill ventilated patients between those with A. baumannii alone and those entirely negative lower respiratory tract cultures.

Methods: 138 eligible cases from an urban-based tertiary hospital intensive care unit (ICU) were retrospectively reviewed.

Results: Between 43 patients with A. baumannii [mean age (SD): 47 (18.5) yrs; 65% male] and 95 matched patients with negative cultures [51 (17.5); 53%], median risks of hospital mortality were not significant different but the median (IQR 25-75 ) length of total hospital stay [19 (11-32) vs. 14 (9-21) days, p=0.022] and ICU [8 (4-19) vs. 7 (3-9), p=0.010] were significantly longer in A. baumannii group. Such findings occur irrespective of whether the underlying lungs were diseased or not and whether the isolates were resistant (except for cefepime-resistance).

Conclusion:Isolation of lower respiratory tract A. baumannii alone in critically ill patients is no more likely to cause increased mortality risk than in those with negative culture, and prolonged ICU stay is likely responsible for the acquisition of A. baumannii .

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