Radiological Presentation Of H1n1 Influenza In The 2017 Outbreak In India And Correlation With Patient Outcome
CURRENT RESPIRATORY MEDICINE REVIEWS(2018)
摘要
Background: H1N1 influenza has a broad spectrum of clinical and radiological manifestations. We witnessed a pandemic of H1N1 influenza in the year 2009, an epidemic in 2015 and it continues to cause localised outbreaks to this day causing significant mortality and morbidity. The severity on a chest X-ray and its correlation with the outcome needs evaluation.Objective: To assess the radiological manifestations of H1N1 influenza patients at a presentation in the 2017 outbreak in India in a tertiary care setting and ascertain the most common pattern of radiological involvement.To determine the association between the radiological manifestations of H1N1 pneumonia and the patient outcome.To ascertain if co-morbid conditions contributed to the adverse patient outcome.Methods: A retrospective (December 2016 till July 2017) analysis of the clinico-radiological data of all the inpatient cases positive for H1N1 was done at a tertiary care chest institute in Bangalore, India. The patients' outcome was divided into two groups. A: Recovered and discharged and B: Death. The chest X-rays done at presentation to our hospital were used as the radiological tool.Results: 75 patients were included in this study. Cough, dyspnea and fever were the usual presenting symptoms with an average duration of 7 days, prior to presentation at our hospital. Bilateral midzone and lower zone consolidation was the most common radiological pattern. Patients with a normal chest X-ray had a significantly better outcome. An absence of pleural involvement and lower scores on a severity scale were associated with a better outcome. Diabetes mellitus was the commonly associated co-morbidity. The presence or absence of a co-morbidity did not influence the outcome.Conclusion: In a resource-limited setting, chest X-rays can be used to prognosticate patients with H1N1 influenza. The more the number of zones involved would implicate more complications and greater risk of death.
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关键词
2017, chest x-ray, consolidation, H1N1, outcome, radiology, scoring
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