MICROBIAL SPECTRUM OF CARDIAC IMPLANTABLE ELECTRONIC DEVICE INFECTIONS - A TERTIARY CARDIAC CENTER EXPERIENCE

Authors

  • Sabeen Khurshid Zaidi Armed Forces Institute of Cardiology & National Institute of Heart Diseases, Rawalpindi

Keywords:

Cardiac implantable electronic device, Microbiological

Abstract

Objective: The objective of the study was to determine the microbiological spectrum of cardiac implantable
electronic device (CIED) infections.

Study Design: Case series

Place and Duration of Study: Armed Forces Institute of Cardiology / National Institute of Heart Diseases
AFIC/NIHD from January 2011 to Nov 2013.
Patients and Methods: A total of 15 pus samples from patients with possible CIED infection out of 814 patients
with implantable CIEDs were processed. Thirteen patients with positive cultures out of fifteen were included in
the study. Clinical evidence of CIED infection included signs of inflammation and purulent drainage. A CIED
infection was microbiologically confirmed based on culture yield. Blood cultures were carried out in all patients
with suspected CIED infection along with trans-oesophageal echocardiography (TOE), wherever clinically
indicated to exclude bacteremia and lead endocarditis.

Results: Sixty nine percent of patients with culture proven CIED infection were females and 31% were males. The
mean age of patients was 61 years (range 53-70 years). Devices included 11 PPMs, 1 ICD and 1 CRT. The most
frequent organisms were gram-positive (77% of isolates); with Coagulase-negative Staphylococci (CoNS)
predominating in particular Methicillin Resistant Staphylococcus epidermidis (MRSE) in 46.4% cases followed by
Methicillin Sensitive Staphylococcus epidermidis (MSSE) in 15%. Non tuberculous Mycobacterium fortuitium was
isolated from pus in two patients; with PPM and ICD implants respectively. MRSA was isolated in only 01 PPM
...............

Conclusion: CIED infections are more often caused by Staphylococci predominantly CoNS, although atypical
Mycobacteria can be implicated.

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Published

29-03-2014

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Original Articles

How to Cite

1.
Sabeen Khurshid Zaidi. MICROBIAL SPECTRUM OF CARDIAC IMPLANTABLE ELECTRONIC DEVICE INFECTIONS - A TERTIARY CARDIAC CENTER EXPERIENCE. Pak Armed Forces Med J [Internet]. 2014 Mar. 29 [cited 2025 Jan. 10];1(1):S63-66. Available from: https://pafmj.org/PAFMJ/article/view/11836