Tim Norfolk
@icmtim.bsky.social
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📥 804
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UK single CCT ICM consultant. Strive to be humbled less often!
#Haemodynamics
#POCUS
#FOAM
reposted by
Tim Norfolk
Anaesthesia
3 months ago
Adjustment of positive end-expiratory pressure based on body mass index during general anaesthesia: a randomised controlled trial
#AnSky
doi.org/10.1111/anae...
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The fact the furosemide stress test does well at predicting who will need to commence/continue RRT is great (& unsurprising) but it doesn’t help us at the bedside. The real question is does earlier initiation/re-continuation of RRT help this cohort? 1/
ccforum.biomedcentral.com/articles/10....
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Spontaneous diuresis in combination with furosemide stress test (SD-FST) as predictor for successful liberation from kidney replacement therapy: a prospective observational study - Critical Care
Background The optimal time for initiating kidney replacement therapy (KRT) in acute kidney injury (AKI) has been extensively studied in recent years. In contrast, there are currently insufficient dat...
https://ccforum.biomedcentral.com/articles/10.1186/s13054-025-05452-1
3 months ago
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reposted by
Tim Norfolk
Mike Johansen
3 months ago
😱
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A normal CT head ≠ a low risk of raised ICP/herniation after LP in meningitis❗️ “80% of pts with ABM who herniate have no CT abnormalities” 🔑 Take-away: Clinical signs (e.g. GCS <9, seizures, pupil changes) are the best indicators of WHO SHOULD NOT have a LP
journals.sagepub.com/doi/epub/10....
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Lumbar Puncture and Brain Herniation in Acute Bacterial Meningitis: An Updated Narrative Review
https://journals.sagepub.com/doi/epub/10.1177/08850666251337684
4 months ago
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reposted by
Tim Norfolk
Yuki Kotani, MD
5 months ago
🆕 New RCT in JAMA: Sedation in mechanically ventilated ICU patients—Dexmedetomidine vs Clonidine vs Propofol 📕 Main takeaway: In critically ill patients, neither dexmedetomidine nor clonidine shortened time to successful extubation compared to propofol.
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Procalcitonin- the more we learn, the less we love it 💔 ▪️94% of non-septic AKI pts had a Pct >0.5 prior to commencing CRRT ▪️Even using a threshold of >3.2 the specificity was only 38% 🗑️ “Pct in pts with AKI/ESRD should not be measured”
#EMIMCC
ccforum.biomedcentral.com/articles/10....
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Procalcitonin levels in septic and nonseptic subjects with AKI and ESKD prior to and during continuous kidney replacement therapy (CKRT) - Critical Care
Background Procalcitonin is a 14.5 kDa protein used clinically as a marker of sepsis and therapeutic response to antibiotic therapy. However, its utility in critically ill patients with either acute k...
https://ccforum.biomedcentral.com/articles/10.1186/s13054-025-05414-7
5 months ago
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Assessing fluid responsiveness in spontaneously breathing MV patients is tough, so this work on SIGH35 by Messina et al. is really 👌 ▪️ Apply a 35cm H20 ‘sigh breath’ for 4 secs and measure the change in pulse pressure from baseline to nadir Simples. 1/
ccforum.biomedcentral.com/articles/10....
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SIGH35 and end-expiratory occlusion test for assessing fluid responsiveness in critically ill patients undergoing pressure support ventilation - Critical Care
Background Assessing fluid responsiveness is problematic for critically ill patients with spontaneous breathing activity, such as during Pressure Support Ventilation (PSV), since spontaneous breathing...
https://ccforum.biomedcentral.com/articles/10.1186/s13054-025-05398-4
5 months ago
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Sometimes checking an ScvO2 feels pointless, but other times it’s 23% P.S. a CO2 gap of 2.3 (17mmHg) must take some beating?
6 months ago
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Does the over rapid correction of hypernatraemia really cause cerebral oedema in adults❓ Most guidelines suggest a rate of correction < 10mmol/L per day, and whilst there is evidence of risk in children (with tighter, more vulnerable brains) the evidence of risk in adults is scant 1/
6 months ago
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Basilar artery occlusion accounts for ≈10% of nontraumatic causes of coma Unconscious without a good explanation? CT head WITH ANGIOGRAPHY is a must❗️
www.sciencedirect.com/science/arti...
#EMIMCC
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Systematic combined noncontrast CT–CT angiography in the management of unexplained nontraumatic coma
Nontraumatic impaired consciousness is a common issue in emergency departments with a serious but widely variable prognosis.The aim of this prospectiv…
https://www.sciencedirect.com/science/article/abs/pii/S0735675712004871
6 months ago
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The finger sweep test is in every article there is on necrotising fasciitis yet in my experience, I’ve never known a surgeon perform it. Indeed they look askance if I’ve suggested it 🫤 Is this a 🇬🇧 thing? Curious to hear other people’s experience…
#EMIMCC
academic.oup.com/bjs/article/...
6 months ago
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📢 This bares emphasis 📢 If you’ve started vasopressin for septic shock & the BPs stable/improved but the skin is mottling, you’ve almost certainly made things worse. VA uncoupling with septic cardiomyopathy is a legit silent 🥷 Pressure ≠ perfusion
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6 months ago
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Time to dump my shares in Sedaconda! Inhaled Sevoflurane led to increased 90d mortality compared to propofol (52.9% v 44.3%) in pts with ARDS (Also median duration of NMB use of 5 days in both groups seems wild 🫤)
jamanetwork.com/journals/jam...
#MedSky
#EMIMCC
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Inhaled Sedation in Acute Respiratory Distress Syndrome
This clinical trial compares the efficacy of inhaled sevoflurane vs intravenous propofol for sedation in patients with acute respiratory distress syndrome.
https://jamanetwork.com/journals/jama/fullarticle/2831857
6 months ago
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A great opportunity to recite this 💎: 1L of 0.9% Saline contains as much salt as 23 packets of Walkers Cheese & Onion crisps That initial 3L resus = 69 bags worth‼️ It’s no wonder people get a bit puffy as their poor kidneys battle to pee out all that 🧂😵💫🧂
add a skeleton here at some point
7 months ago
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reposted by
Tim Norfolk
Sarah Phelps
7 months ago
Adolescence on Netflix is fucking astonishing, urgent, vital and it hurts your heart. Incredible cast, direction and writing. You must watch it. You just must.
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Having discontinued Melatonin on numerous occasions (murmuring Pro-MEDIC to any poor soul who’ll listen) the rec FOR melatonin is quite triggering… Now to decide if I’ve got the humility to question my assertions & revisit the issue or just go full ‘Marik’ mode 💡 Ivermectin for delirium ⁉️
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7 months ago
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reposted by
Tim Norfolk
josh farkas 💊
7 months ago
brief skytorial on the latest SCCM PADIS guideline update. this is a nice, useful, & concise statement that will change my practice. there are basically two take-home messages... (🧵 #1/3)
journals.lww.com/ccmjournal/a...
#EMIMCC
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📝 ▫️Clonidine should be carefully considered as there is a paucity of evidence around its use ▫️ Consider Haloperidol (first line) for psychomotor symptoms My colleagues will be gutted, but I’m all for the
#VitaminH
❤️
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7 months ago
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An excellent (albeit a little scary) retrospective study of arterial injury after CVC insertion. A National Audit Project looking at CVCs is a fantastic idea, & would hopefully help us answer additional questions (i.e. optimal insertion site, routine line changes, fixation device)
#EMIMCC
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7 months ago
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Thoughts and prayers to the poor centurion who got put on VA-ECMO 🥺
#Zentensivsim
link.springer.com/article/10.1...
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Utilization and outcomes of life-supporting interventions in older ICU patients in Japan: a nationwide registry study - Intensive Care Medicine
Purpose The purpose of this study is to describe the implementation of life-supporting interventions and the short-term outcomes of older patients in ICUs in Japan. Methods All adult patients admitted...
https://link.springer.com/article/10.1007/s00134-024-07759-z
7 months ago
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Some very challenging interactions with a new surgical colleague this morning
#ILookLikeASurgeon
👩⚕️ 🥰 🦄
7 months ago
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reposted by
Tim Norfolk
Chris Carroll, MD
8 months ago
New
@accpchest.bsky.social
transfusion guidelines out in
#journalCHEST
!
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Latest ACCP guidelines (post-MINT trial) for RBC transfusions in ICU have dropped 🔑 take-away recommendation: ❗️In patients with acute coronary syndrome, a permissive strategy is recommended (Hb >10 g/dL)❗️
#EMIMCC
#MedSky
journal.chestnet.org/article/S001...
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Red Blood Cell Transfusion in Critically Ill Adults
Blood products frequently are administered to critically ill patients. Considering recent trials and practice variability, a comprehensive review of current evidence was deemed essential to offer pert...
https://journal.chestnet.org/article/S0012-3692(24)05272-3/fulltext
8 months ago
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TL;DR ▫️There’s no good evidence mucolytics help (or harm) ventilated ICU pts ▫️Everyone uses them anyway ▫️🤞MARCH trial will give us some answers ▫️Until then, carry on practicing based on shameless personal bias/gestalt Fin/
#EMIMCC
#MedSky
ccforum.biomedcentral.com/articles/10....
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Physiology and pathophysiology of mucus and mucolytic use in critically ill patients - Critical Care
Airway mucus is a highly specialised secretory fluid which functions as a physical and immunological barrier to pathogens whilst lubricating the airways and humifying atmospheric air. Dysfunction is c...
https://ccforum.biomedcentral.com/articles/10.1186/s13054-025-05286-x
8 months ago
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Great to have an another tool in the pocket for assessing fluid responsiveness in patients ventilated with low Vt, although… Currently I just whack the Vt up to 9mls/kg, measure PPV then change them back. Seems a lot less faff 🫤
#EMIMCC
ccforum.biomedcentral.com/articles/10....
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Changes in pulse pressure variation induced by passive leg raising test to predict preload responsiveness in mechanically ventilated patients with low tidal volume in ICU: a systematic review and meta...
Background Pulse pressure variation (PPV) is limited in low tidal volume mechanical ventilation. We conducted this systematic review and meta-analysis to evaluate whether passive leg raising (PLR)-ind...
https://ccforum.biomedcentral.com/articles/10.1186/s13054-024-05238-x
8 months ago
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Prognostication following cardiac arrest care is complex. Myoclonus is observed in about 20-30% of post-arrest patients admitted to ICU, and a frequent dilemma is distinguishing between simple myoclonus and myoclonic status 1/
8 months ago
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❓Authors suggest ensuring adequate respiratory drive (e.g. P0.1 >2) prior to US assessment, but presumably in severe diaphragmatic weakness P0.1 will be low. Don’t we really need EAdi measurements to look for neuro-mechanical uncoupling❓
#POCUS
#emimcc
link.springer.com/article/10.1...
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How I perform diaphragmatic ultrasound in the intensive care unit - Intensive Care Medicine
Intensive Care Medicine -
https://link.springer.com/article/10.1007/s00134-024-07688-x
8 months ago
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Useful BNF reminder in 🇬🇧 context too. 500mg oral sodium bicarb ≈ 6mmol HCO3 1L of 1.26% sodium bicarb = 150mmol HCO3 Orders of magnitudes difference
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8 months ago
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reposted by
Tim Norfolk
Katie Wiskar
8 months ago
Doppler ultrasound for venous congestion -
#VEXUS
- has truly been game-changing in my clinical
#POCUS
practice. Here's the TL;DR on the concept of
#VEXUS
- 🧵
#emimcc
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As someone who is a fan of both decremental PEEP trials & monitoring P0.1 this paper is 🫶 Trying to personalise PEEP during PSV is tough, & we don’t all have EIT/oesophageal manometry! Pick the PEEP resulting in lowest P0.1, makes a lot of sense 😬
link.springer.com/article/10.1...
#EMIMCC
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Personalized positive end-expiratory pressure in spontaneously breathing patients with acute respiratory distress syndrome by simultaneous electrical impedance tomography and transpulmonary pressure m...
Purpose Personalized positive end-expiratory pressure (PEEP) might foster lung and diaphragm protection in patients with acute respiratory distress syndrome (ARDS) who are undergoing pressure support ...
https://link.springer.com/article/10.1007/s00134-024-07695-y
8 months ago
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reposted by
Tim Norfolk
Medics need to take a leaf out of the surgical playbook: “I’ve booked 78 year old Dorothy an HDU bed. She’s a little muddled and her urea is 8 with patchy consolidation right base. CURB-65 14% 30-d mortality. She’s a NEPA case so I’ll send her right up. No, on room air. BP 140/90”
8 months ago
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As I suspected… now don’t go complaining when I send your pre-planned HDU admission straight to the ward from recovery! 😜
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8 months ago
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🇬🇧 Anaesthetist pals: Trying to educate myself on the role of CPET testing prior to major intra-abdominal surgery. Seems to be good evidence for its ability to predict mortality/morbidity/LOS, but any data to suggest routine HDU admission based on CPET scores actually improves patient outcomes?
8 months ago
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reposted by
Tim Norfolk
Objection your honour! Ethanol is an ineffective osmole, so whilst it does raise measured serum osmolality it won’t cause the water shifts that lead to hypertonic hyponatraemia (unlike glucose/mannitol)
jamanetwork.com/journals/jam...
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Hyponatremia, Hyposmolality, and Hypotonicity
The difficulty that nonnephrologists sometimes have with the differential diagnosis of hyponatremic patients often results from misinterpreting the significance of measured and calculated serum osmola...
https://jamanetwork.com/journals/jamainternalmedicine/fullarticle/484958
8 months ago
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Question for MedSky community: Has anyone seen obstructive shock physiology resulting from dynamic hyperinflation in a ̲𝚜̲̲𝚙̲̲𝚘̲̲𝚗̲̲𝚝̲̲𝚊̲̲𝚗̲̲𝚎̲̲𝚘̲̲𝚞̲̲𝚜̲̲𝚕̲̲𝚢̲ ̲𝚋̲̲𝚛̲̲𝚎̲̲𝚊̲̲𝚝̲̲𝚑̲̲𝚒̲̲𝚗̲̲𝚐̲ patient with a severe COPD/asthma exacerbation?
#EMIMCC
8 months ago
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If a picture’s worth 1000 words then this cine loop’s a damn novella dedicated to the pathogenesis of hepatic hydrothorax 😍
#EMIMCC
#pocus
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8 months ago
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reposted by
Tim Norfolk
Kevin J. Fowler
8 months ago
The same research group reported that kidney transplant recipients were more fearful of going back on dialysis than dying. Think about that
#nephjc
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In a retrospective cohort of 273 pts with HSV encephalitis: ➖ 4% had an initial -ve HSV PCR ➖ 17% had CSF WCC <5 ‼️ If you have a high clinical suspicion, continue aciclovir & repeat the LP (all false -ve occurred within 4 days of symptom onset)
#EMIMCC
pubmed.ncbi.nlm.nih.gov/35167501/
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Herpes Simplex Virus Encephalitis With Initial Negative Polymerase Chain Reaction in the Cerebrospinal Fluid: Prevalence, Associated Factors, and Clinical Impact - PubMed
In severe herpes simplex encephalitis, initial negative CSF HSV PCR occurred in 4% of cases and was independently associated with worse neurologic outcome at hospital discharge. In these patients, a s...
https://pubmed.ncbi.nlm.nih.gov/35167501/
9 months ago
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🤯 Prehospital Ketamine for BZD/ resistant Status Epilepticus 🔹Seizure termination in 56/57 (98.2%) * ESETT 📄 Levetiracetam terminated seizures in 68/145 (47%) by 20 mins 🔹 Only 2 pts required ventilatory support * ESETT 📄 Levetiracetam group 30/150 (20%) intubated at 60mins
#EDIMCC
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10 months ago
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Another day, another dissection, another excuse for the Drake Meme
#EMIMCC
10 months ago
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Tim Norfolk
Ed Palmer
10 months ago
People often talk about the time critical nature of sepsis. But it may surprise you to hear that the evidence to support “early” antibiotics actually isn't a settled debate. Why is that? The key question is “early in relation to what”? 🧵 1/n
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The best reason not to check phosphate levels in ICU pts, is to avoid endlessly being told about phosphate levels For a whole load of other good reasons check out
@criticalcarereviews.com
linked review (below) TL;DR - no good evidence it helps anything other than waste time/money
#EMIMCC
10 months ago
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The mass migration to Bluesky has been an overwhelming success but there’s ones huge piece missing- Ross Prager Please someone reach out on the other place or IRL and drag him over here. It’s time 🫶
#EMIMCC
10 months ago
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A treasure trove of important trials for ICM trainees to sink their teeth into Nice work
@dilipj1.bsky.social
🙌
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10 months ago
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reposted by
Tim Norfolk
Katie Wiskar
10 months ago
1/ Back to the basics today: let's talk about common pitfalls in obtaining cardiac
#POCUS
images ❤️ Here are some very common image acquisition errors in basic views, as well as the simple moves to correct them ✅ 🧵
#emimcc
#POCUSky
#echosky
#MedSky
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Tim Norfolk
Lars Mølgaard Saxhaug
10 months ago
A reminder for all interested in
#pocus
, we have our own feed! Follow to see all posts tagged
#pocus
or
#pocusky
and your post will show up in the feed. If you see a post you think should be included, you can also comment with the tags to get it to the feed.
bsky.app/profile/did:...
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🤯😨🤔 Hard to imagine how the PAPs can be so high, with a failing RV/low CI and yet result in such a low CVP! Be tempting to give a tiny fluid challenge, watch the CVP like a hawk & make sure you’re at the bottom of the RV-EDPVR cliff face Any follow-up on the case
@imcrit.bsky.social
?
add a skeleton here at some point
10 months ago
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Save time/money/CO2 by switching patients from IV to enteral Levetiracetam ASAP Would make a nice little quality improvement project for any 🌍💚 ICM trainees
link.springer.com/article/10.1...
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Comparison of environmental, economic and professional impacts of levetiracetam according to its administration route in intensive care unit - Intensive Care Medicine
Intensive Care Medicine -
https://link.springer.com/article/10.1007/s00134-024-07575-5
11 months ago
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So much wisdom in the comments on this thread. 🦋 is re-kindling the joy of SoMe/MedEd 👏
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11 months ago
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