New Directions In STD Treatment - University of Hawaii

New Directions In STD Treatment - University of Hawaii New Directions In STD Treatment - University of Hawaii

16.01.2013 Views

Trichomoniasis Issues � Diagnosis on Pap test lacks specificity; recommend confirm with culture if patient is at low risk � New point of care tests have better sensitivity but FP in lower prevalence population � OSOM Trichomonas Rapid Test and Affirm TM VP III � Culture is the most sensitive and specific and should be done if wet mount is negative and Trichomoniasis is suspected � New treatment: � ADD tinidazole 2 g po x 1 � Higher cost but better tolerated � New management of treatment failure (after metro 2 g po x 1) and Metronidazole-resistant trichomonas

Tinidazole: A New Treatment Option � Second generation 5-nitroimidazole �92%-100% effectiveness for trichomoniasis �Contraindicated in pregnancy (category C) � Advantages versus Metronidazole � Greater tolerability (approx. ½ incidence of nausea, vomiting and other GI side effects) � Longer duration of action (t1/2 of 12-14 hrs vs 6-7 hrs) � Greater in vitro potency against protozoa and anaerobes � Effective in metronidazole-resistant trichomoniasis � 92% (22/24) cure rate in largest report � Enhanced penetration in genital tissues

Trichomoniasis Issues<br />

� Diagnosis on Pap test lacks specificity; recommend<br />

confirm with culture if patient is at low risk<br />

� <strong>New</strong> point <strong>of</strong> care tests have better sensitivity but FP<br />

in lower prevalence population<br />

� OSOM Trichomonas Rapid Test and Affirm TM VP III<br />

� Culture is the most sensitive and specific and should<br />

be done if wet mount is negative and Trichomoniasis<br />

is suspected<br />

� <strong>New</strong> treatment:<br />

� ADD tinidazole 2 g po x 1<br />

� Higher cost but better tolerated<br />

� <strong>New</strong> management <strong>of</strong> treatment failure (after metro 2 g<br />

po x 1) and Metronidazole-resistant trichomonas

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