@gjones33,
1. Selecting a test depends on its sensitivity, specificity, timing and invasiveness. Guidelines differ. In PID, you can get certain tests but in disseminated gonococcal the yield is quick and good with different type of tests from other sites like oropharynx.
Most often it may not matter on CCS software but keep any eye on report times. You want to order a test with quickest report time and yet sensitive so you can get some diagnosis and manage the case.
As you know, cultures take a long time. I did not check how long it takes for NAAT ( Nucleic acid amplification testing) but it is the test of choice if report time is quick. You can test by placing the order on USMLE.ORG and see how long NAAT takes to come back. I will try and let you know. But this is gold standard. Others not much recommended - antigen test needs urethral or cervical swab, invasive -- you may order but it is good to know NAAT is test of choice now.
HIV - 4th gen ELISA test of choice - quick report time, good sensitivity and specific... like that.
Knowing the differences between some recommended tests also help you with MCQs.
2. Which case did you see where they are ordered at same time....? If you saw that in pneumonia case or UTI case where the source is apparent, it is fine to use the order screen to order at same time. Blood cx draw time is immediate so it is like you are order culture but are also ordering antibiotic so sequenced fine... but
definitely not order antibiotic, ADVANCE clock and then culture in which case sequence will be incorrect. OSince window to give antibiotics is within 1 hour of SIMULATED time, there is no rush to give abx before drawing cultures. In ********** cases that I saw, cultures are ordered before antibiotics and clock is advanced a few minutes before antibiotics are entered. This is what Archer refers to as "sequencing correctly." Archer says that in cases like Sepsis and Infective endocarditis - where
cultures determine the diagnosis, selection of antibiotics and duration of treatment, it is very important to sequence those correctly and it is SCORED on the exam.
3. From the office, direct admits to ward are allowed to the hospital if
vitals are stable, pt with no other condition that needs immediate assessment, and patient is not in severe pain. If vitals unstable, severe pain, or supected stroke/ MI/TIA/ gross GI bleeding that needs immediate assessment, must go through ER so determination can be made whether patient can be admitted to Ward or ICU.