The present cross sectional study was conducted in Sir Salimullah Medical College & Mitford Hospital, Dhaka over a period of 1 year. Patients admitted with the symptoms and signs suspected of pneumonia and confirmed after proper examination and necessary investigations were the study population. The baseline characteristics, patients’ behavioral factors, presenting complaints, co-morbidities, examination findings and investigations were recorded. Data were processed and analyzed using software SPSS (Statistical Package for Social Sciences) version 11.5.The test statistics used to analysis the data were descriptive statistics. 

In the present study, a large proportion of patients were 50 years or more than 50 years with  mean age of the patients was 46.4 ± 13.3 years and Male was predominant (58%) and male to female ratio was roughly of 1:1 respectively. Over half (56%) of the patients were smoker and 8% were alcoholic. Fever (90%) and purulent sputum (70%) were the common complaints. The second most common complaints were chest pain and hemoptysis (each of 44%). Thirty eight percent of the patients had dyspnea and a very few had other symptom. Eighteen percent of the patients had COPD, another 18% had diabetes and 4% had cardiac insufficiency. The mean pulse, systolic blood pressure, diastolic blood pressure, temperature and respiratory rate were 95 ± 18 beats/minute, 109 ± 14 mmHg, 67 ± 12 mmHg, 101.0 ± 1.2 0F and 24.1 ± 4.6 breath/minute respectively. About one-quarter (24%) of the patients had agitation stupor, 88% bronchial breathing and 68% crackles. Right lower lobe (31%) and right middle lobe (26%) were commonly affected by pneumonia of the patients detected with a chest x-ray. In studying the Investigations, total WBC, neutrophil, lymphocyte, and blood urea were 13850.0 ± 4278.5 /c-mm of blood, 79.7 ± 5.9 %, 14.8 ± 4.7 %, and 5.5 ± 0.5 mmol/L respectively. Over two-third (68.5%) of the patients exhibited positive sputum for Gram’s stain.