Discover and read the best of Twitter Threads about #IMPOCUS

Most recents (24)

ICU stories (a brief one): One hour before the end of the am shift, u walk around in the ICU to make sure thinks look OK before u type your sign-out note. You spot the resp therapist & the nurse bagging the pt in Rm 306. From the hallway, u see the monitor: HR 160, RR/45, Sat 70%
This is a 30 yo pt w hx of a catastrophic brain bleed, s/p trach & PEG, admitted 2 wks ago w MDR Klebsiella UTI. Doing well, on trach mask 28%, until the episode of acute/unexpected desaturation
When u examine the pt, s/he is in extremis (accessory muscle use-tachycardic-tachypneic-diaphoretic). BP: 105/55. You grab the stethoscope that the resp therapist wears around his neck & you hear breath sounds in both sides (pt is skinny...)
Read 24 tweets
ICU stories: 70 yo pt without medical hx but tobacco use (2 ppd x 40 y) was admitted w shortness of breath a wk ago. CXR/chest CT without PE/infiltrate. Was in afib/RVR on admission; placed on heparin & dilt/b-blocker (w some hypotension). Remained dyspneic, at times restless,
“requiring” multiple sedatives, & eventually was brought to the ICU. Intubated for "resp distress" & mental status changes. "Formal" echo, the day of ICU transfer, showed “LVEF 20% w global LV dysfunction”. On the vent 50% - peep 10. BP 110-130/60-70. Lactate < 2.0
Cards follow for "well compensated heart failure". A look w POCUS upon ICU admission:
Read 20 tweets
How do you examine the lower extremity venous system when you look for deep vein thrombosis? What points do you check with the probe? Do you use Doppler? What are the recommended protocols? The Society of Radiologists in Ultrasound recommends a complete duplex ultrasound:
👆 The black rectangles represent the extent of the compression US. The gray rectangles are the sites of Doppler.
2-CUS (2-points compression US) includes compression of the femoral veins 1-2 cm above & below the saphenofemoral junction & the popliteal veins
up to the calf veins
ECUS (extended compression US), includes compression US from the common femoral vein through the popliteal vein up to the calf veins confluence

CCUS (complete compression US), includes compression US from the common femoral vein to the ankle
Read 9 tweets
ICU stories (a boring one…): If you work in a general ICU of a community hospital in United States, one of the common admissions you will get is the unfortunate resident of a nursing home or rehabilitation center that lives there for several decades & at some point becomes
febrile/“altered” & is sent to the ED for “evaluation”. The course is so predictable that we usually consider these admissions “boring”. This is the case of a middle-aged pt w cerebral palsy/mental retardation/seizures (on valproic)/PEG-chronic Foley in place who was sent to
the ED for fever+hypotension+tachycadia. Labs: WBC 15k, lactate 4.0. UA -as usually- suggestive of UTI (WBC>50, +bacteria, +nitrite, +esterase). CXR “clear” & pt w sat 99% on room air. Received ivf, Abx (pip/tazo + vanco) but due to persistent ⬇️BP, norepinephrine gtt was ordered
Read 25 tweets
It's December, already. The time of the year when I am trying to spend every last cent of the annual allowance given to us for continuing medical education (CME) by our employer. In essence, this is money that we have worked for and, since it won't carry over to next year, I hate
leaving it on the table. The problem is that if you buy a conference or a study course now, you have to watch everything - and submit proof of attendance/completion - before the end of the year. So, it's a very busy month dedicated to studying/reviewing educational material!
For example, I just finished watching the last one of the 93 lectures from The Hospitalist & Resuscitationist 2022 conference #HR2022. If you are an intensivist/internist/family medicine/EM physician, I have no doubt that u will find several pearls to bring back to your practice
Read 5 tweets
Head‑to‑toe #POCUS skills for intensivists in the general and neuro #intensivecareunit population: consensus and expert recommendations of the European Society of Intensive Care Medicine.
🔗pubmed.ncbi.nlm.nih.gov/34787687/
#MedEd #IMPOCUS
Summary of the recommendations
#POCUS #Brain
Thorax #POCUS
Read 6 tweets
ICU stories: You get a call from outside 🏥 to accept a middle-aged pt w DM2/HTN/HLD/some type of solid Ca on chemo/obesity who presented to their ED w weakness/anxiety/"feeling cold". Vitals: BP 80-100, HR 130s (sinus tach), afebrile, Sat 100% on room air. Labs: WBC 13K, ...
... Lactate 5.2, creat 1.3. UA w some WBCs/bacteria. CXR clear. Norepi drip ordered but cancelled after BP improved to mid-90s, HR fell to 120s, & lactate ⬇️ to 2.5. What's your next step?
The discussion went like this:
Me: I will be happy to accept but I have no idea what we are treating. If it is sepsis, the source is unclear. And what about PE? Can you pls get a CT before sending?
ED: Sure, will do it. Thanks.
You go home & next am you learn that the CT showed:
Read 21 tweets
RV enlargement for #POCUS purposes: In the apical 4-chamber view, if the RV is slightly bigger than the normal configuration of 1/3 - 2/3, its mild enlargement, RV = LV is moderate, RV > LV is severe.
#IMPOCUS #MedEd #Nephrology
Also, observe the RVOT in the parasternal long axis view: the three musketeers rule!
#POCUS
Read 3 tweets
A short 🧵 on hepatic vein #VExUS and key pathologies
From: jacc.org/doi/10.1016/j.…

1/ HV Anatomy & Normal Flow Profile, respiratory variation (forward flow [S,D] ⬆️ during inspiration)

Click ‘ALT’ for normal waveform description

#POCUS #MedEd #Nephrology #IMPOCUS #FOAMed The normal flow profile in ...
2/ A. Tricuspid regurgitation: Systolic flow reversal
B. Tricuspid stenosis: prolonged deceleration time of the D-wave + prominent A-wave

Click ‘ALT’ for further description

#POCUS #VExUS (A) Severe tricuspid regurg...
A. Constrictive pericarditis: expiratory ⬇️ in tricuspid flow & RV filling with associated flow reversals on HVD
B. Restrictive cardiomyopathy: prominent D reversals during inspiration
C. ⬆️RVEDP: prominent A-wave
D. RV systolic dysfunction: ⬇️ S-wave

‘ALT’ for description (A&B) A) Constrictive pericarditi...
Read 6 tweets
Illustration of the Effects of Changes in Intrathoracic and Intracardiac Pressures During Respiration in Normal Versus Constrictive Heart.
#echofirst #MedEd #POCUS #IMPOCUS
🔗 sciencedirect.com/science/articl…
Typical changes during respiration in the interventricular septum movement (white arrows) and blood flow velocities (black arrows). Insets depict typical Doppler velocity (y-axis) versus time (x-axis) tracings across
MV, TV, PV & HV.
🔗nature.com/articles/nrcar…
#POCUS #echofirst
Another easy-to-understand representation of variation on transmitral and tricuspid flow in constrictive pericarditis.
Read 3 tweets
ICU POCUS snippets: A bit of context: An elderly patient with hx of DM2 / HTN / HLD / peripheral vascular disease / ureteral stent & recurrent UTIs is admitted to the hospitalists’ service w diffuse abdominal pain, nausea & vomiting. Treated for a few days w antibiotics...
...but never really felt any better (weak/abd pain). Eventually, became hypotensive & was transferred to the ICU for “initiation of vasopressors”. Phys exam: diffuse abd tenderness. Formal echo earlier that day: "Normal LV/RV in size and systolic function". ICU POCUS was done...
...to gain more information regarding the cause of the abd pain and the hemodynamic picture. Some of the clips are shown here:
Read 15 tweets
Cardiac tamponade on #POCUS #echofirst
Click on 'ALT' for description
#MedEd #IMPOCUS #Nephrology
From 🔗pubmed.ncbi.nlm.nih.gov/32572594/ Two-dimensional (2D) and M-mode echocardiographic signs of p
Mitral inflow Doppler and LVOT VTI in tamponade.
'ALT' for description
#POCUS #echofirst #MedEd Respiratory variations in flow velocities by spectral Dopple
Pulsus paradoxus: during inspiration, right heart filling occurs at the expense of the left, so that its transmural pressure transiently improves & then reverts during expiration (Ventricular interdependence). Seen as 👆on #POCUS
Read 5 tweets
ICU POCUS snippets: Much has been said about how useful lung POCUS is for procedural guidance. First of all, it accurately reveals large effusions when the radiology report characterizes them as “small”. This is from a recent case of a pt intubated w community-acquired pneumonia
and what proved to be bilateral parapneumonic effusions:
Secondly, while the dogma (which, btw, I don’t recommend completely ignoring!) in thoracentesis is to insert the needle at the “triangle of safety”, bordered by the anterior border of the latissimus dorsi, the lateral border of the pectoralis major, the horizontal line at the...
Read 12 tweets
One of my favorite topics in #POCUS - various effusions seen from different sonographic windows.
Here is a thread 🧵with labeled images for those interested.
1. PLAX view - pericardial effusion - anterior to descending aorta ⚫️below LA), wedge shaped
#MedEd #IMPOCUS #Nephpearls
2/ PSAX papillary muscle view
LV is think as many of my patients have #CKD and LVH (as well as mitral annular calcification seen on PLAX view above)
#Nephrology #POCUS
3/ Apical 4-chamber view
Sometimes, effusions may be missed due to inadequate visualization of ventricular free wall/lung interference. Always pay attention to the RA area
#POCUS
Read 22 tweets
Looks like #POCUS ologists are in a mood to revive old #VExUS posts and tweetorials today.
Let me re-share the VExUS flash card(s) 🧵
1. VExUS grading live card
#MedEd #IMPOCUS
Hepatic vein #VExUS #POCUS
Portal vein #VExUS #POCUS
Read 5 tweets
Small thread 🧵illustrating #POCUS based hemodynamic assessment. Relatively a classic case of pulmonary HTN and right heart failure but would like to get some insights from the experts.

1/ Parasternal long axis (PSAX) showing D-sign
#VExUS #MedEd #Nephpearls #IMPOCUS
2/ Parasternal long axis (PLAX) view demonstrating RV dilatation.
One of the three musketeers is big. Don't know what I'm talking about? Here is a brief reminder: 🔗nephropocus.com/2021/07/12/the…
(Mobile thing in the RVOT is PA catheter; M-mode quiz from this morning is actually this)
3/ Apical 4-chamber view #POCUS
Note how RV is dilated - bigger than LV and forming the cardiac apex.
Inter-atrial septum is bowing to the left indicating high right atrial pressure (not unexpected).
Read 21 tweets
Humbling pleural procedure case to share.

70 y/o admitted with fever, hypoxia, R flank pain, loculated pleural effusion (right lower) on CXR. Concern for empyema prompting abx, chest US and possible intervention.

How would you manage? (poll to follow)

#POCUS #IMPOCUS

1/
2/
It is overnight on the ward. Which of the following would be your advised management?
3/
Read 14 tweets
ICU stories: Middle-aged pt w PMHx of rheum fever/A fib underwent MV+AV replacement, TV repair w ring, Maze procedure + LA appendage closure. At the end of surgery, TEE was “fine”; pt was transferred to the ICU intubated (fio2 40%) on low-dose levo (0.04). Could not be extubated
because few h later, lactate began to ⬆️ and ivf were given. Levo gtt did not ⬆️ much (just @ 0.1 next am) but lactate was up to 17 mmol/l & pH was 6.98. I was told that pt was probably still "under-resuscitated". When I 👀the chart, pt had received multiple NS, bicarb & albumin
boluses and was > 8 liters positive. I first pulled the bed sheets to look at the legs and feel the skin temp:
Read 22 tweets
ICU stories (this story includes the answer to the quiz from yesterday): Young pt w PMH of HTN/HLD/DM2/CAD (stent of obtuse marginal) presented with chest/abd pain, N/V. Stat EKG (infero-lateral "changes"; ST elevation in inferior leads?): Image
Emergent cath: "diffusely diseased LAD w stenosis 40%, non-dominant Cx with diffuse disease and stenosis <40%, widely patent OM stent, dominant RCA w diffuse disease and stenosis 50%. Pt did not have hemodynamically significant stenosis to explain symptoms and was admitted to CCU
... on nitro drip (for BP control). Next am, pt went into a wide-complex tachycardia that deteriorated in seconds to V fib. CPR started. Defib x1 back to SR. The post-ROSC ECG (that I posted yesterday) showed: Image
Read 28 tweets
#Nephrology #POCUS short story:
1/ Simple case, want to remind some pitfalls in routine practice.
There was a patient with orthostatic hypotension. Likely neurogenic secondary to amyloidosis.
Read the thread 🧵below:
#IMPOCUS #MedEd mini #tweetorial
2/ Physician A orders IV albumin q 6 hours and keeps continuing because:
1. 'Formal' echo from 4 days ago reported a RAP of 3 mmHg = not high
2. 'Documented' weight showed 3 kg drop since admission
Interestingly, documented cumulative fluid balance is +4 L!
3/ Physician B comes in and performs physical examination (#POCUS). Supine BP is relatively low (SBP ~103 mmHg) but nothing different compared to patient-reported figures at home. Pt feels OK, on midodrine.
Here is the IVC👇
Read 9 tweets
OK #VExUS #POCUS enthusiasts, time for another case discussion.
Somebody asked if I ever recommend IV fluid in a patient with #VExUS 3.
Here is one example where I did.
1/ First, let's see the #physicalexam (#IMPOCUS) findings, then will tell about the case. #MedEd #Nephrology
2/ So, hepatic shows D-only pattern👆
If we are doing #VExUS, IVC must be big. Here is the M-mode #POCUS 👇
3/ Renal parenchymal vein #VExUS #POCUS
It also demonstrates D-only pattern 👇
Read 15 tweets
#POCUS quiz of the day:
Easy one. Identify 1, 2 and 3.
POLL in thread 👇 #IMPOCUS #MedEd
👆#POCUS
PE = pleural effusion
PER = pericardial effusion
Ao = aorta
IVC = inferior vena cava
Rt = right
Lt = left
Correct answer: option 2 -
1. left pleural effusion (note the appearance of collapsed lung; also u can see rib shadows/posterior chest wall = lung area)
2. Right pleural effusion (remember the Boomerang sign on subxiphoid view?)
3. IVC
Read 4 tweets

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