Imaging Findings in Patients With H1N1 Influenza A Infection

1Department of Radiology, Pediatric Respiratory Disease Research Center, National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Masih Daneshvari Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran

2Department of Infectious Diseases, Mycobacteriology Research Center, National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Masih Daneshvari Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran

3Department of Infectious Diseases, Clinical Tuberculosis and Epidemiology Research Center, National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Masih Daneshvari Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran

4Department of Radiology, Erfan Hospital, Tehran, Iran

5Department of Radiology, Lung Transplantation Center, National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Masih Daneshvari Hospital, Shahid Beheshti University of Medical Sciences, Tehran, Iran

IJ Radiology:Vol. 8, issue 4; 230-234

Published online:Dec 31, 2011

Article type:Research Article

Received:Aug 25, 2010

Accepted:Sep 19, 2011

How to Cite:Mehrdad BakhshayeshkaramBahareh SaidiPayam TabarsiSoheila ZahirifardMishka GhofraniImaging Findings in Patients With H1N1 Influenza A Infection.I J Radiol.8(4):230-234.https://doi.org/10.5812/iranjradiol.4554.

Abstract

Background: Swine influenza (H1N1) is a very contagious respiratory infection and World Health Organization (WHO) has raised the alert level to phase 6 (pandemic). The study of clinical and laboratory manifestations as well as radiologic imaging findings helps in its early diagnosis.
Objectives: The aim of this study was to evaluate the imaging findings of patients with documented H1N1 infection referred to our center.
Patients and Methods: Thirty-one patients (16 men) with documented H1N1 infection were included in our study. The initial radiography obtained from the patients was reviewed regarding pattern (consolidation, ground glass, nodules and reticulation), distribution (focal, multifocal, and diffuse) and the lung zones involved. Computed tomography (CT) scans were also reviewed for the same abnormalities. The patient files were studied for their possible underlying diseases.
Results: The mean age was 37.97 ± 13.9 years. Seventeen (54.8%) patients had co-existing condition (eight respiratory, five cardiovascular, two immunodeficiency, two cancer, four others). Twelve (38.7%) patients required intensive care unit (ICU) admission. Five (16.1%) patients died. (25.8%) had normal initial radiographs. The most common abnormality was consolidation (12/31; 38.7%) in the peripheral region (11/31; 35.5%) followed by peribronchovascular areas (10/31; 32.3%) which was most commonly observed in the lower zone. The patients admitted to the ICU were more likely to have two or more lung zones involved (P = 0.005).
Conclusions: In patients with the novel swine flu infection, the most common radiographic abnormality observed was consolidation in the lower lung zones. Patients admitted to ICU were more likely to have two or more lung zones involved.

Keywords

Fulltext

Full text is available in PDF

comments

Crossmark

Checking

Share on

Comments

Number of Comments:0

Cited by

Metrics

Get Permission (article level)

Purchasing Reprints

Copyright Clearance Center (CCC) handles bulk orders for article reprints for Brieflands. To place an order for reprints, please click here ( https://www.copyright.com/landing/reprintsinquiryform/ ). Clicking this link will bring you to a CCC request form where you can provide the details of your order. Once complete, please click the ‘Submit Request’ button and CCC’s Reprints Services team will generate a quote for your review.

Search Relations

Author(s):

Mehrdad Bakhshayeshkaram:[PubMed][Scholar]
Bahareh Saidi:[PubMed][Scholar]
Payam Tabarsi:[PubMed][Scholar]
Soheila Zahirifard:[PubMed][Scholar]
Mishka Ghofrani:[PubMed][Scholar]