H1N1 Influenza: Initial Chest Radiographic Findings in Helping Predict Patient Outcome

Aviram, Galit; Bar-Shai, Amir; Sosna, Jacob; Rogowski, Ori; Rosen, Galia; Weinstein, Iuliana; Steinvil, Arie; Zimmerman, Ofer

doi:10.1148/radiol.10092240

Cited by 80 publications

(77 citation statements)

References 22 publications

(26 reference statements)

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“…During hospitalization patients with In luenza A (H1N1) presented extensive regions of lung damage, generally with a ground-glass opacity pattern or consolidations. The radiograph was also considered a complication-predictive exam for these patients (27). Which complies with the indings observed in the present research, in which all of the subjects presented this type of damage.…”

Section: Resultssupporting

confidence: 90%

Pulmonary function in patients with pandemic H1N1

et al. 2016

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Introduction:The in luenza A (H1N1) was responsible for the 2009 pandemic, especially with severe pulmonary complications. Objective: To describe characteristics of patients in a university hospital in Curitiba -PR with laboratory diagnosis of in luenza A (H1N1) and its post hospital discharge in the 2009 lung function pandemic Methodology: A retrospective observational study. It was used as a data source the institution Epidemiology Service (SEPIH) and spirometry tests of patients who were admitted in 2009, 18 years without lung disease associated and non-pregnant. Descriptive statistics were used and applied Fisher's exact test for relationship between comorbidity and spirometry tests. Results: There were 84 con irmed cases, of these 11 were eligible for the study with a mean age of 44.27 years (± 9.63) and 63.63% males. 54.54% of the 11 patients had comorbidities associated with systemic arterial hypertension (54.54%), diabetes (18.18%) and late postoperative period of kidney transplantation (18.18%) were the most frequent. Most patients (81.81%) had BMI ≥ 25kg / m². The Spirometry test was performed approximately 40.09 (± 15.27) days after discharge, of these, 5 had restrictive pattern and all had abnormal chest radiograph results. There was no statistically signi icant difference between the results of Spirometry and comorbidities (p=0.24). Conclusions: The group evaluated in this research did not show a direct relationship between Spirometry and comorbidities, but changes in Spirometry in some patients after hospital discharge stood out, suggesting changes in lung function due to in luenza A (H1N1). Keywords

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Section: Resultssupporting

confidence: 90%

Pulmonary function in patients with pandemic H1N1

et al. 2016

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“…So, an 'earlier mild' finding like a peribronchovascular marking would not be seen on an initial radiograph. In addition, we found that unilateral involvement was a more frequent finding than bilateral, unlike the findings from three previous studies (6,7,9). Meanwhile, Kim et al (17) noted that the pattern of influenza viral pneumonia was initially poorly defined patchy areas of consolidation measuring 1-2 cm in diameter and this pattern is consistent with the bronchopneumonia pattern in our study.…”

Section: Independent-sample T-testsupporting

confidence: 68%

“…We can also observe a pattern and distribution of radiologic abnormalities based on previous studies. In chest radiographs, bilateral ground-glass opacity (GGO), or consolidation was the most common finding of the studies of Aviram et al (6) and Agarwal et al (7) Also, in high resolution CT (HRCT) of 20 adult patients infected with H1N1 influenza virus, Marchiori et al (8) reported bilateral GGO or mixed bilateral GGO and consolidation were common. There was also a study of the radiographic findings of children, however, the results were not compared with those of the adult patients (9).…”

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confidence: 95%

“…In the study of the largest series of patients (1,088 with probable or confirmed cases), Louie et al (5) noticed that 77% of patients underwent chest radiographs and 66% (547/833) had infiltrates. In the study by Aviram et al (6), which included the largest number of laboratory-confirmed patients to date, 54% underwent chest radiographs and 40% had abnormal findings. Agarwal et al (7) reported that 30% had chest radiographs and 42% of these were abnormal.…”

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confidence: 99%

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Radiologic Review of an Outbreak of the Pandemic (H1N1) 2009 Virus Infection at a University Hospital in Seoul, Korea

Choi

Kang

Kim

et al. 2011

J Korean Soc Radiol

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“…7 Jain S et al, (NEJM) shows 66 patients bilateral findings and Galit Aviram et al they showed ground glass appearance 69% consolidation in 59% cases. 8 Panchal V et al, also shows lower zone and bilateral multi zonal involvement. 9 Pre-morbid condition in death cases were hypertension, diabetes, pregnancy, HIV, cancer which coincides with Perez R NEJM and many previous authors described it.…”

Section: Discussionmentioning

confidence: 96%

Cross-sectional descriptive observational study of RT PCR proven category C H1N1 patients at tertiary care centre from January 2015- December 2015

et al. 2017

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Background: The onset of winter of 2014-2015 saw an alarming spurt in influenza A (H1N1) pdm 09 leading to a significant mortality. H1N1 primarily affects the very young, elderly, pregnancy and those patients with comorbidities. But the epidemiologic hallmark of pandemic influenza is its "pandemic signature " meaning most early mortalities are among young healthy adults.Methods: To study clinical profile, premorbid conditions and radiological features of Category C H1N1 proven by RTPCR retrospectively from hospital records from Jan 2015 to Dec 2015 at Tertiary Care Centre.Results: Total 108 cases RT PCR proven category C H1N1 studied from hospital records. 43 were males and 65 females. The mean age group was 50 years for males and 40 for females. Common symptoms were fever, cough, dyspnoea with pre-morbid illness like hypertension, diabetes mellitus, pregnancy, cancer and immune compromised with pulmonary tuberculosis. Radiologically there was lower zone involvement common in live patients and reticulonodular was common in death cases.Conclusions: In current study young to middle age group was commonly affected. Pre-morbid conditions, more than two risk factors and late referral were the most common findings in death cases.

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H1N1 Influenza: Initial Chest Radiographic Findings in Helping Predict Patient Outcome

Cited by 80 publications

References 22 publications

Pulmonary function in patients with pandemic H1N1

Pulmonary function in patients with pandemic H1N1

Radiologic Review of an Outbreak of the Pandemic (H1N1) 2009 Virus Infection at a University Hospital in Seoul, Korea

Cross-sectional descriptive observational study of RT PCR proven category C H1N1 patients at tertiary care centre from January 2015- December 2015

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