Discover and read the best of Twitter Threads about #pharmpearl

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#OTILT #IDtwitter #oncopharm

What factors do you have to consider while treating a cancer pt with a malignant pleural effusion and concurrent infection? 🤔

1/
🚨Cancer pts are at risk for MPE➡️consequence of metastatic involvement of the primary tumor in the pleura💨
💡Lung, breast, and lymphoma are the most common causes💡

Query of the pleural fluid with the use of the Lights criteria will help to determine the etiology (transudative or exudative)

Exudative=malignant OR infection

One of the criteria is a serum protein ratio >0.5
Since both MPE & infectious effusions🦠contain↗️↗️protein

🛑Avoid highly protein bound abx (Ex: daptomycin, ceftriaxone, ertapenem)➡️can get sequestered in the pleural fluid& have↘️systemic distribution & ↘️the ability to treat a bacteremia if present 😳🤯
Read 4 tweets
Abiraterone 💊 is an oral antiandrogen approved for metastatic hormone sensitive and castrate resistant prostate cancer

Why does abieraterone have to be coadministered with prednisone? 🤔 What if a patient wishes to avoid steroid therapy? 🤯

#oncopharm #pharmpearl
Abiraterone is a CYP17 inhibitor that suppresses downstream non-gonadal androgen synthesis
As a consequence➡️ reflex↗️↗️ ACTH production leads to excess in mineralocorticoids

Early trials WITHOUT pred▶️pts developed severe hypertension, hypokalemia and edema 2/2 ↗️ aldosterone Image
To suppress the reflex activation of the HPA axis & diminish symptoms of mineralocorticoid excess▶️coadministration with prednisone is required

If a pt is reluctant to taking long term pred▶️try Epleronone ✅ Mineralocorticoid receptor antagonist- blocks🛑 aldosterone!
Read 4 tweets
Ever wonder how the BCG (Bacillus Calmette–Guérin) vaccine works against bladder cancer?🤔

BCG vaccine➡️approved for the tx of bladder cancer in 1990⌛️
✅Main intravesical agent shown to⬇️risk of progression of non-muscle invasive to muscle-invasive disease (>platinum chemo!)🤯
So, how does a vaccine for MYCOBACTERIUM work for bladder cancer!?🤨(dont worry, I was making the same confused face you are! Let me explain it to you!)

BCG=attenuated live strain of Mycobacterium🦠 bovis (which interestingly is related to the bacteria that causes tuberculosis) Image
It is administered by DIRECT instillation into the bladder and the mycobacterium outer membrane binds to a substance (Fibronectin) that is ALSO found within the urothelium. Image
Read 5 tweets
Today I verified an order for clozapine for the very first time of my entire first year of being a pharmacist😳

Here are 5 clinical pearls I learned today about the use of clozapine for schizophrenia, important for new residents & interns to learn about this therapy! #pharmpearl
1⃣ Clozapine➡️second-generation, atypical antipsychotic➡️HIGHLY effective for treatment resistant schizophrenia

Unlike other antipsychotics➡️clozapine⬇️incidence of EPS or tardive dyskinesia➡️beneficial agent for pts who experience this debilitating ADE from other agents
So why if it is so effective is it reserved after failure of 2⃣adequate trials of other antipsychotics? 🤔

Clozapines use in clinical practice is limited due to its significant adverse effects and judicious monitoring required on treatment...see below...
Read 11 tweets

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