Biomedical subjects

A K Ditzen

Publications and source records attributed to A K Ditzen.

4 recordsLinked to original sources

PubMed2006

[Haemophilus influenzae].

A resurgence in the incidence of sexually transmitted diseases (STD) has occurred in Germany over the past ten years. Along with the classical STD such as syphilis and gonorrhea, new and as yet atypical organisms such as shigella or hepatitis A virus play a role in high-risk patients. We report a case of urethritis caused by H. influenzae Biotype II in an HIV-positive patient. The prevalence of H. influenzae as a relevant pathogen causing urinary tract infections is underestimated because of a lack of selective culture media and no requirements for notification.

Adult↗

PubMed2005

The syphilis-HIV interdependency.

Resurgence in the incidence of HIV and syphilis infections has been reported from all Western European Countries and the USA during the past years, the majority of them in men who have sex with men. The attitude among HIV-positive patients towards the application of preventive measures is changing in comparison to the time immediately after the detection of the HIV. Furthermore, HIV care providers do not always talk in an open manner about safer sex and disclosure, with the result that a large group of patients regards oral sex as harmless with respect to the transmission of sexually transmitted diseases (STDs). We illustrate this context by the case presented. Since both HIV and syphilis represent risk factors for the transmission of further STDs, their interdependency must be interrupted by promotion of early and effective STD-related health-care behaviours.

Adult↗

PubMed2001

Small intestinal bacterial overgrowth in patients with cirrhosis: prevalence and relation with spontaneous bacterial peritonitis.

OBJECTIVES: The significance of small intestinal bacterial overgrowth in patients with cirrhosis is not fully understood and its diagnostic criteria are not uniform. We examined the association of small intestinal bacterial overgrowth with spontaneous bacterial peritonitis and compared various microbiological criteria. METHODS: Jejunal secretions from 70 patients with cirrhosis were cultivated quantitatively and classified according to various definitions. Clinical characteristics of patients were evaluated and the incidence of spontaneous bacterial peritonitis was monitored during a 1-yr follow-up. RESULTS: Small intestinal bacterial overgrowth, defined as > or = 10(5) total colony-forming units/ml jejunal secretions, was present in 61% of patients. Small intestinal bacterial overgrowth was associated with acid-suppressive therapy (p = 0.01) and hypochlorhydria (p < 0.001). Twenty-nine patients with persistent ascites were observed. Six episodes of spontaneous bacterial peritonitis occurred after an average 12.8 wk. Occurence of spontaneous bacterial peritonitis correlated with ascitic fluid protein concentration (p = 0.01) and serum bilirubin (p = 0.04) but not with small intestinal bacterial overgrowth (p = 0.39). Its association with acid-suppressive therapy was of borderline significance (hazard ratio = 7.0, p = 0.08). CONCLUSIONS: Small intestinal bacterial overgrowth in cirrhotic patients is associated with acid-suppressive therapy and hypochlorhydria, but not with spontaneous bacterial peritonitis. The potential role of acid-suppressive therapy in the pathogenesis of spontaneous bacterial peritonitis merits further studies.

Adult↗

PubMed2000

Diagnosis of small intestinal bacterial overgrowth in patients with cirrhosis of the liver: poor performance of the glucose breath hydrogen test.

BACKGROUND/AIMS: Small intestinal bacterial overgrowth is known to occur in association with cirrhosis of the liver and studies are needed to assess its pathophysiological role. The glucose breath hydrogen test as an indirect test for small intestinal bacterial overgrowth has been applied to patients with cirrhosis but has not yet been validated against quantitative culture of jejunal secretion in this particular patient population. METHODS: Forty patients with cirrhosis underwent glucose breath hydrogen test and jejunoscopy. Jejunal secretions were cultivated quantitatively for aerobe and anaerobe microorganisms. RESULTS: Small intestinal bacterial overgrowth was detected by culture of jejunal aspirates in 73% of patients, being associated with age and the administration of acid-suppressive therapy. The glucose breath hydrogen test correlated poorly with culture results, sensitivity and specificity ranging from 27%-52% and 36%-80%, respectively. CONCLUSIONS: In patients with cirrhosis, the glucose breath hydrogen test correlates poorly with the diagnostic gold standard for small intestinal bacterial overgrowth. Until other non-invasive tests have been validated, studies addressing the role of small intestinal bacterial overgrowth in patients with cirrhosis should resort to microbiological culture of jejunal secretions.

Adult↗