Which of these is the most common in-flight medical emergency?
cardiac symptoms (chest pain, palpitations, pacemaker concerns)
nausea/vomiting
syncope or presyncope
seizures
obstetric or gynecological problems
respiratory symptoms
You are correct. The most common medical problems were syncope or presyncope (37.4%), respiratory symptoms (12.1%), and nausea or vomiting (9.5%) with some variation across airlines, according to a 2013 NEJM article.
Can you identify this pill?
levetiracetam
paricalcitol
abacavir
hydrocodone/acetaminophen
You are correct. Hydrocodone/acetaminophen is a combination analgesic indicated for moderate to severe pain.

As a reminder, you can use the Pill ID feature to identify a pill based on its imprint code or physical characteristics, including shape, color, and scoring. Find Pill ID in the epocrates app or on epocrates Web.
[Source: Pill ID]
All of these are early stage or late stage symptoms of primary amebic meningoencephalitis (PAM) except for:
cercarial dermatitis
stiff neck
coma
severe frontal headache
fever
seizures
altered mental status/hallucinations
nausea/vomiting
You are correct. Cercarial dermatitis, or swimmer’s itch, is a skin rash caused by an allergic reaction to certain parasites that infect some birds and mammals. However, it's not a symptom of primary amebic meningoencephalitis (PAM).

Naegleria fowleri infections are rare, according to the CDC. In the U.S., between zero and five cases were diagnosed annually from 2013 to 2022. During this period, a total of 29 infections were reported in the U.S.

Most Naegleria fowleri infections occur in young males, especially those 14 years old and younger. The reasons for this aren’t clear. It’s possible that young boys are more likely than others to participate in activities such as diving into the water and playing in the sediment at the bottom of lakes and rivers.
(Eur Heart J Case Rep)—A 57-year-old male with history of heart transplant (6 years prior), acute lymphocytic leukemia (diagnosed 14 years prior and treated via allogeneic stem cell transplant), CKD, hypothyroidism, HTN, anemia, and gout presented with severe fatigue and shortness of breath. Physical examination was notable for pallor and trace lower-extremity edema. Lab data revealed pancytopenia, with WBC 0.6 x 103/μL (normal 4.5-11.0 x 103/μL), Hgb 6.3 g/dL (13.9-16.3 g/dL), and platelets 41 x 103/μL (150-450 x 103/μL). Given the lack of evidence of malignancy on peripheral blood smear and bone marrow bx, as well as negative viral studies, drug-induced myelosuppression was considered in the differential.

Meds: azathioprine, tacrolimus, allopurinol, diltiazem, epoetin alfa, folic acid, hydralazine, levothyroxine, and torsemide.

Which drug combo could have caused the pancytopenia?
azathioprine and allopurinol
epoetin alfa and tacrolimus
tacrolimus and torsemide
allopurinol and hydralazine
You are correct. Azathioprine and allopurinol may cause profound cytopenia, due to the increased production of azathioprine metabolites. Xanthine oxidase, one of the pathways for inactivation of azathioprine, is inhibited by allopurinol. In patients receiving azathioprine and allopurinol concomitantly, the azathioprine dose should be reduced to one third to one fourth of the usual dose.

Source article: Feinman J, Rollins B, Contreras J, Parikh A. Pancytopenia caused by allopurinol and azathioprine interaction in a heart transplant patient: a case report. Eur Heart J Case Rep 2020 Nov 15;4(6):1-4. doi: 10.1093/ehjcr/ytaa326. eCollection 2020 Dec. More info is available in the free, full-text Eur Heart J Case Rep article PDF at PubMed Central.