[Hepatitis B and C infection as a part of hospital acquired infection at the Renal Dialysis Unit in Assiut University Hospital]

Background: Hospital-acquired hepatitis B [HBV] and C virus [HCV] infections continue to occur despite increased awareness of this problem among the medical community. Infection with hepatitis viruses continues to be a major concern for hemodialysis patients, who are recognized as a high-risk group

Objectives: To measure the HBV and HCV seroconversion in hospitalized patients at the hemodialysis unit in Assiut University hospital and to assess the potential risk factors for infection with these viruses in this unit

Methods: This study was performed in Assiut University Hospital at the renal dialysis unit. A total of 63 patients on regular hemodialysis who should be negative for anti HCV, HBsAg and IgG anti HBc with normal liver enzymes and abdominal ultrasound were included in this study between June 2011 and August 2014. An identification questionnaire for possible risk factors for HBV and HCV was done at the start of study. Then follow up after 3 months with another questionnaire for the risk factors and screening by anti HCV, HBsAg and IgM anti HBc were done. Then another follow up after 6 months with other questionnaire for the risk factors and screening by anti HCV and HBsAg. Qualitative PCR test for HCV was used for patients whose results were positive for anti HCV either at 3 months or 6 months follow up. The study also include 12 health care workers and they were screened for anti HCV and HBsAg. Their history of vaccination for HBV was also assessed. Assessment of adherence to infection control measures was also done

Results: Twenty one patients were anti HCV positive, seven of them were positive after 3 months follow up and 14 were positive after 6 months follow up with seroconversion rate of 33.3%. No patient was positive for HBV throughout the study period. All these positive for anti HCV were negative for qualitative PCR for HCV All the included health care workers were negative for HBV and HCV markers. Furthermore all of them had complete vaccination for HBV. The potential risk factors for HCV seroconversion were duration and frequency of dialysis, blood transfusions, dialysis with patients positive for HCV in the same room, lack of strict adherence to infection control measures by the health care workers

Conclusion: Regular screening of all patients and health care workers in hemodialysis units for HBV and HCV with improvements in infection control practices should be done. Therefor health education of the health care workers and their vaccination against HBV infection should be considered

Predictors of asymptomatic cardiac events and prognostic value of cardiac biomarkers in chronic kidney disease patients

Patients with chronic kidney disease [CKD] are at increased risk of cardiovascular events; cardiovascular disease is a leading cause of death in patients with chronic kidney disease; Circulating biomarkers play a major role in the early detection of cardiovascular disease in those patients. To clarify the prevalence of asymptomatic different cardiac events in CKD and to explore the degree of elevation of N- terminal-pro-B-type Natriuretic Peptide [NT-pro-BNP] in asymptomatic cardiac patients with varying degree of CKD and the relationship between the elevation of this biomarker and the occurrence of these cardiac complications. This case-control study included 40 CKD patients and 40 controls; patients were recruited from nephrology unit of internal medicine department; Assiut university hospital; known to have chronic kidney disease in different grades [grade I- grade V]. Resting transthoracic echocardiography [TTE] and plasma NT-pro-BNP concentrations were measured in patients who were asymptomatic for clinical evidence of any cardiac events, [n=40; mean age 47.63 +/- 17.93 years; 52.5%were males] as well as healthy volunteers n=40; mean age 42.00 +/- 13.25; 62% were males]. In addition, the correlation between plasma NT-pro-BNP concentration and parameters of echocardiography was examined. Increased prevalence of left ventricular hypertrophy [LVH] [70%]; left ventricular diastolic dysfunction [77.5%], left ventricular systolic dysfunction [17.5%] and coronary artery disease [27.5%] in CKD patients as well as serum NT-pro-BNP levels in the patients were significantly higher [6703.75 +/- 2947.68 pg/ml] than those in healthy volunteers [124.83 +/- 140.40 pg/ml] [p=0.000]. NT-pro-BNP level was higher also in patients who had hypertension [p=0.002]; anemia [p-0.004]; hypoalbuminamia [p=0.000];left ventricular hypertrophy [LVH] [7873. 57 +/- 2719. 31 pg/ml] [p = 0.000], diastolic dysfunction [7524. 52 +/- 2824.74 pg/ml] [p= 0.000]; systolic dysfunction [10371.43 +/- 2771.71] [p=0.000] and patients who had segmental wall motion abnormality [SWMA] [8709.0.9 +/- 3512.3.9] [p=0.000] and correlate Positively with C reactive protein [CRP] level [r-0.751 p=0.000]; left ventricular mass [LVM] [r=0.772 p=0.000] and left ventricular mass index [LVMI] [r=0.715 p=0.000] and negatively with ejection fraction [EF] by echocardiography [r=-0.483 p=0.000]. NT-pro-BNP level elevation in asymptomatic patients with CKD reflects underlying cardiac dysfunction, ischemic heart disease and hypertrophy independent of renal function