Role of C- reactive proteins and liver function tests in assessing the severity of dengue fever.

OBJECTIVE: To determine whether C-reactive protein and liver function tests can serve as severity markers for dengue fever. METHODS: The cross-sectional study was conducted in 2015-16 in Karachi and comprised patients with dengue fever visiting a tertiary care hospital. World Health Organisation classifications 1997 and 2009 were used to categorise patients according to clinical signs and symptoms. Receiver Operating Characteristics curve was used to determine discriminative ability and optimum cut-off value of biochemical markers. Comparisons were done through one-way analysis of variance using SPSS 17. RESULTS: Of the 218 patients, 133(61%) were males and 85(39%) were females. The overall mean age was 35.07±15.96 years. Levels of C-reactive protein and total bilirubin were significantly higher for dengue haemorrhagic fever compared to dengue fever; dengue shock syndrome compared to dengue fever; dengue shock syndrome compared to dengue haemorrhagic fever; and dengue shock syndrome compared to dengue fever / dengue haemorrhagic fever (p<0.05 each). Levels of alanine aminotransferase, aspartate aminotransferase and alkaline phosphatase were significantly higher for dengue shock syndrome compared to dengue fever; dengue shock syndrome compared to dengue haemorrhagic fever; and dengue shock syndrome compared to dengue fever / dengue haemorrhagic fever (p<0.05 each). Levels of C-reactive protein, total bilirubin, alanine aminotransferase and alkaline phosphatise in patients with severe dengue were significantly higher compared to non-severe dengue. CONCLUSIONS: C-reactive protein and liver function tests were found to be effective biochemical markers in assessing dengue fever severity.

Knowledge, attitude and perception survey of doctors regarding antibiotic use and resistance in Karachi, Pakistan.

OBJECTIVE: To establish a better understanding of physicians' knowledge and beliefs, and to compare distinctions in knowledge, attitude and perception of junior and senior doctors regarding rational use of antibiotics. METHODS: The cross-sectional study was conducted at a tertiary care hospital in Karachi, from June 1 to July 31, 2016, and comprised senior and junior doctors. A 26-item questionnaire divided in three sections was used to test knowledge, attitude and perception of the subjects regarding rational use of antibiotics. Data was analysed using SPSS 23. RESULTS: Of the 200 subjects, 132(66%) were senior doctors; 68(34%) were junior; 116(58%) were females; 84(42%) were males; and the highest number of respondents were from General Medicine 65(32.5%). While 182(91%) doctors realised that antibiotic resistance was a pressing issue, only 131(65.5%) felt confident about their prescriptions and 94(47%) admitted that they over-prescribed antibiotics. Among young physicians, 13(19.1%) believed that antibiotics did not cause side effects even when prescribed unnecesarily. Also, 47(69.1%) junior doctors felt that patients' demands influenced their prescriptions compared to 66(50%) senior doctors (p=0.01). CONCLUSIONS: Although physicians were found to be knowledgeable about rational use of antibiotics, there were gaps in knowledge and perception.