ABSTRACT
Background: Community-acquired pneumonia (CAP) is the most important cause of hospitalisation in Malaysia and the 6th most important cause of mortality in patients aged 65 years and above. CAP is a lower respiratory tract infection that includes signs and symptoms like cough, fever, dyspnoea, the presence of new focal chest signs and new radiographic shadowing with no prior cause. To assist clinical judgement in deciding whether to admit the patient for in-ward treatment or otherwise, the severity of CAP is most commonly graded using the CURB-65 score as the components are more readily accessible in the Accidents and Emergency Department. We believe that cardiopulmonary diseases, immunosuppressive diseases like HIV infection or diabetes mellitus and other co-morbidities may affect the severity of CAP and are thus aspects of a patients’ history that should play a more significant role in influencing a clinician’s judgement of CAP severity. The general objective of the study is therefore to identify the relationship between co-morbidities and initial severity assessment of a patient admitted for community acquired pneumonia. The 3 specific objectives are i) to determine if presence of co-morbidities affects initial severity assessment in a patient admitted with CAP ii) To identify which co-morbidities affects initial severity assessment and iii) to determine whether having multiple co-morbidities increases initial severity assessment. Methodology: A retrospective study was carried out from the month of February 2013 to July 2013 at Hospital Tuanku Ja’afar, Seremban (HTJS). Patients admitted to the four Medical wards – 6A, 6B, 7A, and 7B – from July 2012 to December 2012 and have been diagnosed with CAP were chosen. A checklist was used as a survey instrument. Using statistical analysis, the severity of CAP in patients was compared in patients with different factors like gender, different co-morbidities and the number of co-morbidities. Results: A total of 63 patients in the control group had no co-morbidities and 54 patients were of low risk, 7 patients had moderate risk, and 2 patients had high risk CAP. Of the remaining 337 patients in the sample population, 124 patients had one co-morbidity, while 213 patients had multiple co-morbidities. Among those with a single co-morbidity, 100 patients had low risk, 19 patients had moderate risk, and 5 patients had high risk CAP. For the group with multiple co-morbidities, 135 patients had low risk, 58 patients had moderate risk, and 20 patients had high risk CAP. This study found that the presence and number of co-morbidities present in a patient affected the severity of CAP. Co-morbidities like diabetes mellitus, hypertension and asthma had significant correlation to the severity of CAP in patients. The gender of the patient had no significant correlation to the severity of CAP. Conclusion: The presence and number of co-morbidities present in a patient increases the severity of CAP. Hypertension, diabetes mellitus, and asthma are comorbidities that are prerequisites for increased caution and alert when judging the severity of CAP in patients. Comparison of patients with single and multiple comorbidities showed that patients in the latter group present with higher severity scores (p-value = 0.004).