Ryan O'Keefe Profile picture
MD/MBA @PennMedicine @Wharton | IM PGY3 at Penn | Onc, Pall Care, MedEd | Creator @pointofcaremed | Follow for clinical threads and pearls
Ron Levitin, MD Profile picture 1 subscribed
Jan 6 18 tweets 5 min read
Here are some of my favorite hyperkalemia pearls that will help take your understanding of the disease process to the "201" level!

And, yes, this ominous banana is meant to be an abstract visualization of the serious consequences of hyperkalemia.

Read on!

- Thread -

1/18 Image Only 2% of total body K is extracellular.

In HyperK, the resting membrane potential becomes LESS negative, leading to downstream effects on electrical conductivity.

Chronic changes in extracellular K lead to compensatory mechanisms to reduce this excitability.

2/18
Jan 5 22 tweets 6 min read
Picking up hyperkalemia on an EKG can be lifesaving.

We all know about "peaked T-waves," but the underlying pathophysiological basis for the various EKG changes is confusing and unintuitive.

A thread on EKG findings in hyperkalemia!

- Thead -

1/15 Image Disclaimers

Though these are the "classic" EKG changes, patients do not necessarily progress in this order.

EKGs do not always correlate with the actual K level - it depends on the chronicity of the elevation.

Lastly, EKG changes are NOT sensitive for hyperkalemia.

2/15
Jan 2 21 tweets 6 min read
Hyperkalemia gets so much attention because it's a common, complex emergency with potentially life-threatening cardiac implications.

Here's my approach to working up and managing HyperK in the hospital, along with some key pathophys everyone should know!

- Thread -

1/17 Image Check out these @pointofcaremed digital resources on hyperkalemia for use at the point of care!

Online Template


Podcast


YouTube


2/17 pointofcaremedicine.com/inpatient/hype…
podcasters.spotify.com/pod/show/point…

Image
Dec 17, 2023 31 tweets 10 min read
The medical education community on X is unparalleled.

Here are some of my favorite posts and threads related to #meded from 2023!

Each and every one of these exceptional educators deserves a follow!

What posts/threads would you add?

1/27 Learning from such amazing clinicians inspired me to begin posting my own threads this year and to create @pointofcaremed.

If you haven't yet, please check out the website and podcast and let me know what you think!

Here's a thread I'm proud of!



2/27
Nov 11, 2023 11 tweets 3 min read
Starting allopurinol can be a turning point in managing gout, but it's not without its challenges.

Understanding the nuances of initiating treatment can prevent complications and pave the way for long-term relief.

- Thread -

1/10 Image Allopurinol inhibits xanthine oxidase, preventing the formation of uric acid.

This will lead to lower uric acid levels in the blood.

2/10 Image
Nov 7, 2023 13 tweets 3 min read
The pathophysiology of an acute gout flare is much more interesting than "uric acid crystals deposit into the synovium."

Here are some of the most fascinating aspects that will help you better understand the workup and management of gout flares!

- Thread -

1/12 Image Gout is characterized by the chronic deposition of monosodium urate crystals into the synovium.

The "solubility threshold" for monosidum urate is ~6.8 mg/dL, above which circulating uric acid can turn into crystals.

This can constantly happen without causing a flare!

2/12
Nov 6, 2023 31 tweets 9 min read
In acute gout flares, there's more than meets the eye!

A deep dive reveals a fascinating story of unusual pathophysiology and a number of unintuitive clinical pearls!

Read on for some surprising truths and practical tips for management!

- Gout 201, A Thread -

1/25 Image Check out these @pointofcaremed digital resources on Gout Flare for use at the point of care!

They include admission checklists, HPI intakes, differentials, sample dotphrases, and key clinical pearls, along with a podcast and YouTube video with accompanying slides.

2/25 Image
Oct 26, 2023 13 tweets 3 min read
Here are some of the highest-yield pearls related to the clinical presentation and diagnosis of community-acquired pneumonia (CAP)!

Let me know what your favorite pearls are, and if you'd add anything!

- Thread -

1/12 Image You can still have a viral infection AND a bacterial pneumonia; having a positive RVP does not mean you should withhold antibiotics in the right clinical scenario!

2/12
Oct 23, 2023 29 tweets 8 min read
Pneumonia is the leading cause of infectious death in the US and one of the most common reasons for inpatient admission.

In IM, you'll see it over and over and over.

Here's my approach to the workup and management of inpatient CAP, along with some key pearls.

- Thread -

1/24 Image Check out these @pointofcaremed digital resources on CAP for use at the point of care!

They include admission checklists, HPI intakes, differentials, sample dotphrases for the EHR, and key clinical pearls, along with a podcast and YouTube video with accompanying slides.

2/24 Image
Sep 10, 2023 7 tweets 2 min read
Here's a @pointofcaremed table with some high-yield information about the commonly used vasopressors in sepsis.

While we're at it, here's a brief thread on some key clinical pearls when it comes to selecting and titrating pressors.

- Thread -

1/6 Image When it comes to pressors, many are taught:

norepi --> vasopressin --> epi

This often works well, however keep the following pearls in mind.

First, norepi can lead to tachyarrhythmias and doesn't make sense in AFib with RVR if you're giving beta-blockers like metop

2/6 Image
Sep 8, 2023 8 tweets 2 min read
In sepsis, lactate is bad and needs to be corrected immediately via aggressive fluid resuscitation, right?

Well, maybe. But it's complicated.

A brief thread on lactate in sepsis!

1/7
Elevated lactate is most commonly attributed to hypoperfusion 2/2 hypotension and we usually give fluid in response.

However, it can also be thought of as a reflection of endogenous epinephrine production, which stimulates aerobic glycolysis via beta-2 adrenergic receptors.

2/7
Sep 5, 2023 29 tweets 9 min read
As a senior resident, I thought I had a pretty strong understanding of sepsis and septic shock.

But after doing a deep dive, I realized there's so much nuance.

Here's my approach to workup and management, along with some key pearls and lessons.

- Thread -

1/26 Image Check out the @pointofcaremed digital resources on sepsis and septic shock for use at the point of care!

They include templates with admission checklists, sample dotphrases for the EHR, and key clinical pearls, along with a podcast and YouTube video with slides.

2/26 Image
Jun 26, 2023 20 tweets 8 min read
Each year, Acute Decompensated Heart Failure (ADHF) leads to over 1,000,000 hospitalizations in the U.S.

Here's my approach to admitting a patient with ADHF, along with some key clinical pearls.

IM Interns - bookmark this!

#MedEd #MedTwitter #tipsfornewdocs

1/20 Image Check out these @pointofcaremed digital resources for ADHF:

Admission Template and Dotphrases:


Podcast:


YouTube:


2/20pointofcaremedicine.com/cardiology/adhf
spotifyanchor-web.app.link/e/kOn46nKbSAb
May 8, 2023 21 tweets 8 min read
ADHF with overload is the most common cause of admission in the United States.

Confident diuresis is a skill set all IM interns must master.

Follow these tips to take your inpatient diuresis to the next level!

~ Diuretics 201: A Thread ~

#tipsfornewdocs #MedEd

1/18 Image Check out the @pointofcaremed podcast episode on this topic.

spotifyanchor-web.app.link/e/hJ1tDQYEDzb

Here's a TL;DR for the episode

2/18
Feb 13, 2023 29 tweets 10 min read
Talking about hyponatremia is so stereotypically internal medicine and is, quite frankly, something I used to loathe.

Here's a simplified approach to hyponatremia in the inpatient setting, along with some key clinical pearls.

- Thread -

#MedEd #MedTwitter #FOAMed #POCM

1/25 Use this @pointofcaremed template to help you master the topic!

pointofcaremedicine.com/nephrology/hyp…

And check out the podcast and YouTube video to go with it!

anchor.fm/pointofcarepod…



2/25 Image
Jan 25, 2023 24 tweets 8 min read
As an intern, one of the highest-yield schemas I learned was for persistent fevers despite treatment with abx.

I use it all the time as a resident, especially when working with cancer patients.

Let's go through it!

- Thread -

#MedTwitter #MedEd #FOAMed #tipsfornewdocs

1/24 The general ddx for persistent fevers in the hospital, despite abx:

1. Wrong bug
2. Wrong drug
3. Wrong process
4. No source control
5. Not enough time

Let's take them one at a time.

2/24
Jan 23, 2023 25 tweets 10 min read
Some of the most challenging cases on the leukemia service were patients who seemed totally stable but wouldn't stop fevering!

#OncID is one of my favorite parts of cancer care.

Let's talk inpatient neutropenic fever!

- Thread -

#MedTwitter #MedED #FOAMed #OncTwitter

1/23 Check out the neutropenic fever inpatient template @pointofcaremed

pointofcaremedicine.com/hematology-and…

Also, check out the podcast and a video with accompanying slides on our new YouTube channel!

spotifyanchor-web.app.link/e/lGRz5aFLNwb



2/23
Jan 17, 2023 13 tweets 3 min read
The difference between corrected calcium and ionized calcium has always confused me.

Understanding where calcium is in our body, the units we use to measure each, and how they interact really helps me keep it straight.

- A Thread -

#MedEd #MedTwitter #FOAMed

1/11 Only 1% of total body calcium is outside your bones and teeth.

Of the ~0.1% (~350mg) that circulates in plasma:

- 40% is bound to protein (albumin)
- 10% complexed with anions
- 50% is "free" ionized calcium (iCal)

Only iCal is physiologically active.

2/11