Once MSSA grows, trimethoprim-sulfamethoxazole gives way to cephalexin in this NU553 Unit 6 stewardship case, which also weighs his lisinopril and fixes a stop date on day [five]. Searches like "nu 553 unit 6 assignment example", "nu553 unit 6 sample" and "nu553 unit 6 example" land here.
What a finished NU553 Unit 6 antimicrobial stewardship case looks like
Four sections over three pages. The empiric decision comes first and is defended as reasonable at the time: a purulent infection, a local MRSA rate bracketed as [composite], and the 2014 IDSA skin and soft tissue guideline supporting incision and drainage with an agent active against MRSA when cellulitis surrounds the abscess. The culture section reports the organism and its susceptibilities, bracketed, including oxacillin and cefazolin. The revision section weighs three options, continuing the current drug, switching to cephalexin, or stopping antibiotics altogether, and chooses cephalexin because it is narrower, covers the streptococci that often drive surrounding cellulitis, and removes an interaction: trimethoprim blocks potassium excretion much as amiloride does, and with lisinopril on board his potassium of [4.9] matters. The duration section sets [five] days total, with a check on day [three].
How a NU553 Unit 6 example is structured
Stewardship is argued as a sequence of decisions, each judged with the information available when it was made, so the empiric choice is not condemned in hindsight. The revision section carries the weight. It lays the three options side by side and asks of each the stewardship questions: is the spectrum wider than the organism requires, does the agent reach the likely pathogens, and what does it add to the medicines he is already on? The potassium interaction is where the therapeutics course shows, since a narrower drug that also removes a risk from his existing list makes the switch doubly defensible. Stopping antibiotics entirely is considered seriously, because a small drained abscess may not need them, and rejected with a stated reason, the surrounding cellulitis. The duration section fixes the last day of treatment and what would extend it.
An empiric choice that was reasonable
Purulence, a local MRSA rate bracketed as composite, and the 2014 IDSA algorithm made an MRSA-active agent a defensible start. The case says so plainly, because stewardship judges the revision, not the first guess.
What the culture actually changed
MSSA susceptible to oxacillin and cefazolin means a beta-lactam will work. The case treats that as permission to narrow, not as a finding to file, and records the day the result arrived.
Potassium and an old prescription
Trimethoprim acts on the distal nephron like a potassium-sparing diuretic. With lisinopril already raising potassium and a baseline of [4.9], the switch removes a risk the empiric plan quietly added.
No antibiotic, considered and declined
Drainage alone cures many small abscesses. The case weighs that option honestly and declines it only because cellulitis extends [three] centimeters beyond the wound edge, a detail it quotes from the exam.
Day five, and what would extend it
The course ends after [five] days if redness is receding and fever is absent at the day-[three] check. Spreading erythema or new fever would extend it, and the case names who reviews that call.
Where marks go in NU553 Unit 6
Stewardship cases are graded on the revision and the stop date, and a paper that continues the empiric drug unchanged after a susceptible culture has missed the unit's purpose. Switching without saying why cephalexin is narrower, or which organisms it covers that the first drug may not, reads as a preference. The potassium interaction is the therapeutics mark in this case; overlooking lisinopril treats the infection as if it occurred in a patient taking nothing else. Condemning the empiric choice as wrong costs credit for fairness, since it was supported when made. Durations written as a range with no stopping criterion, or as a fixed ten days by habit, draw comments on both evidence and stewardship. Weighing the no-antibiotic option is expected as well. Susceptibilities left unreported and guidelines cited without a year are lesser faults.
Get a NU553 Unit 6 example written to your instructions
Pass along the Unit 6 infection case exactly as NU553 set it, with any culture data, the patient's medication list and its rubric. A first sample costs nothing, takes 24-48h, and defends or revises the empiric choice with dated guidance, screens the replacement drug for conflicts with his current medicines, and ends on a named stop day.
NU553 Unit 6 questions, answered
Is it wrong to have started a broad agent empirically?
Not if the choice fit what was known at the time. Stewardship is about revising once results arrive, and cases in this course often reward a fair defense of the first decision followed by a clear narrowing. Criticizing an empiric choice only in hindsight suggests the author has confused a reasonable start with a mistaken one.
Why does the sample consider giving no antibiotic at all?
Because drainage cures many uncomplicated abscesses, and a stewardship case is stronger when every option, including none, is weighed. The sample declines that option for a specific reason drawn from the examination, surrounding cellulitis. If a case describes a small abscess with no spreading redness, the same reasoning could reasonably reach the opposite conclusion.
How should antibiotic duration be justified?
With a guideline and a stopping criterion. The sample cites the 2014 IDSA guidance supporting short courses for uncomplicated skin infections and ties the stop day to clinical signs at a set check. A duration chosen from habit, or a range with no rule for choosing within it, leaves the grader unable to see the reasoning. All durations in the sample are bracketed composites.