Tatuaggi e infezioni

Anche da noi la pratica di farsi tatuare il corpo è andata via via diffondendosi. Dopo un'iniziale preoccupazione riguardo alla possibilità che questa pratica fosse un veicolo di infezione, è...

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Tatuaggi e infezioni

Anche da noi la pratica di farsi tatuare il corpo è andata via via diffondendosi. Dopo un'iniziale preoccupazione riguardo alla possibilità che questa pratica fosse un veicolo di infezione, è...

[[ This is a content summary only. Visit my website for full links, other content, and more! ]]

Tatuaggi e infezioni

Anche da noi la pratica di farsi tatuare il corpo è andata via via diffondendosi. Dopo un'iniziale preoccupazione riguardo alla possibilità che questa pratica fosse un veicolo di infezione, è...

[[ This is a content summary only. Visit my website for full links, other content, and more! ]]

Organization!

In an effort to help you all out when visiting the blog, I have added a bunch of new links to the right that will send you to pages where my posts are linked by category.  For example, click Cardiology and you’ll see all my Cardiology related posts in isolation.  Also, please check out the links page, where I have linked to a few of my favorite blogs and educational websites.  

Let me know if this helps, and as always thanks for reading!

Ultrarounds.com and Ultrasound assisted intubation

Dr Haney Mallemat of Baltimore produces yet another short but incredibly helfpul screencast video on how bedside USS can assist in emergency tracheal intubation. Check it out! Got no Endtidal CO2 monitor, got no video laryngoscope? Well grab your bedside USS and avoid those awkward, uncomfortable moments immediate post intubation when you and your colleagues dont know if the tubes in the right hole or not!

USS and intubation

Haney, love your work!

Minh

 


Filed under: airway, Emergency anaesthesia, Emergency medicine and critical care, Online critical airway training Tagged: haney-mallemat, intubation, ultrasound

Ducanto wields Glidescope and Pocket bougie

Master Jim DuCanto is back, demonstrating a Glidescope/Bougie assistend tracheal intubation. He is testing the Pocket Bougie by Bomimed

Note his improvised crankshaft maneuver to disimpact bougie tip from anterior tracheal wall, allowing easier passage.

Note the right arytenoid cartilage arresting passage of the railroaded ETT, requiring anticlockwise rotation of the ETT.

Minh

and here is another video of him using the Pocket Bougie with a standard Macintosh laryngoscope

Its an excellent demonstration of proper bougie assisted tracheal intubation, even if there is no bougie prepass.


Filed under: airway, Emergency anaesthesia, Online critical airway training Tagged: airway, bougie, glidescope, intubation
GVL BOMImed Bougie Zoom
MAC with BOMIimed Bougie Morbid Obesity 125 Kg

Emergency Medicine training in NSW – Survey results

Hi all,
A survey was sent to all NSW ED trainees (~480) and DEMT's in late 2011.  
See here for the compiled results and summary..
It looked at several aspects of EM training including:
- protected teaching time
- trainee satisfaction with current EM training
- attitudes to rural rotations
- likelihood of trainees completing training
- utility of networks

Emergency Medicine training in NSW – Survey results

Hi all,
A survey was sent to all NSW ED trainees (~480) and DEMT's in late 2011.  
See here for the compiled results and summary..
It looked at several aspects of EM training including:
- protected teaching time
- trainee satisfaction with current EM training
- attitudes to rural rotations
- likelihood of trainees completing training
- utility of networks

Emergency Medicine training in NSW – Survey results

Hi all,
A survey was sent to all NSW ED trainees (~480) and DEMT's in late 2011.  
See here for the compiled results and summary..
It looked at several aspects of EM training including:
- protected teaching time
- trainee satisfaction with current EM training
- attitudes to rural rotations
- likelihood of trainees completing training
- utility of networks

Episode 06 – Antithrombotic Therapy and Prevention of Thrombosis

Post image for Episode 06 – Antithrombotic Therapy and Prevention of Thrombosis

From American College of Chest Physicians

Chest 2012;141:7S-47S (Executive Summary)

For outpatient treatment, start 10 mg daily for the first 2 days followed by INR measurements

Give 1 day of LMWH or UFH before initiation, if treating VTE

If the patient is on VKAs, avoid NSAIDs and certain ABX (table 8 from full guidelines)

Avoid anti-plt agents unless clinical condition warrants

Normal goal is 2-3, including antiphospholipid

No need to taper when d/cing

Heparin – 80/18 for VTE, 70/15 for cardiac or stroke patients

For outpatients with VTE treated with SC UFH, they suggest weight-adjusted dosing (first dose 333 units/kg, then 250 units/kg) without monitoring rather than fixed or weight-adjusted dosing with monitoring

High INRs

4.5-10, no bleeding: no vitamin K necessary

> 10, no bleeding: Oral Vitamin K

If anticoagulant related major bleeding: 4-factor PCC and Vitamin K Slow IV Injection

See Michelle Lin’s Paucis Verbis on the same

Critically Ill Patients

Recommend against routine screening

Use LMWH or LDUH in all patients unless contra-indicated

For travelers at risk of VTE, use graded compression stockings; do not prescribe aspirin or anticoagulants

Diagnosis of DVT

Low Risk

moderate sens d-dimer, high sens d-dimer, or CUS of proximal veins only. D-dimers are preferred

If d-dimer is positive, get Compression Ultrasound (CUS) of proximal veins

Moderate Risk

Use High sens d-dimer, CUS of prox, or CUS of whole leg

Can stop if high-sens D-dimer is negative

If no d-dimer or d-dimer postive, need a second CUS 1 week later if only prox CUS done

If whole leg CUS is negative, you are done

High Risk

Prox CUS or Whole Leg CUS

If prox CUS and d-dimer negative as well, done

If d-dimer positive or only prox CUS, get 1 week f/u CUS

If whole leg CUS is negative, you are done

Recurrent

In patients with past DVT, recommend high-sens d-dimer, if positive get Prox CUS and 1 week Prox CUS

If negative, get just one Prox CUS

If the old CUS is not available, confirm with venography if positive CUS

Upper Ext

Go right to Doppler CUS for upper extremity dvt suspicion

Treatment of DVT

Start with IV or SQ UFH, LMWH, or fondaparinux (Latter two preferred)

If high pretest, start heparin immediately; If moderate, start heparin only if diagnostic tests are expected to be > 4 hours delayed

Isolated distal DVT-serial CUS rather than treatment unless severe symptoms or risk factors for extension (see full text)

Ambulate DVTs, no bed rest

In patients with hypotension (SBP) < 90 and PE, give systemic thrombolytics (through peripheral, rather than PA cath)

Atrial Fib

Chads 0 – nothing

Chads 1/2 – VKA/oral anti-coag; Dabi is preferred

If a-fib > 48 hours; give 3 weeks of VKA/dabi before cardioversion. Or get TEE with LMWH. Follow with 1 month of Vka/oral anti-coag

If a-fib < 48 hours; Start LMWH and then VKA for 4 weeks

If hemodynamically unstable, treat with anticoagulation ASAP preferably before cardioversion and then continue for 4 weeks

Treat a-flutter like a-fib for all of the above

Stroke

If hemorrhagic, can start heparin between days 2-4, LMWH preferred

What is EMCrit Drinking?

A White IPA–Boulevard # 2

 

 

 

 

 

 

Fièvres hémorragiques africaines : Ebola, Lassa, Marburg

Les fièvres hémorragiques sont un vaste ensemble d'infections virales fébriles avec potentiel syndrome hémorragique. Par fièvre hémorragique africaine on entend généralement la fièvre à virus Ebola ou de Lassa, car ce sont elles qui ont le plus marqué les esprits par leur gravité. Elles sont endémiques ou responsables d’épidémies en Afrique centrale, mais on a [...]

Rick Body’s Cardiology Case 1. August 2012

Here we go with what I hope will become a regular feature of the St. Emlyn’s blog – a cardiology case of the month.  This is something I’ve been running for short while in my department, so it makes great sense to start sharing the cases with a wider audience, in the interests of #FOAM.

I certainly can’t promise to live up to the genius of Amal Mattu or Steve Smith, but still I hope you’ll find this a worthwhile feature!  They’re the scribbles of a busy academic emergency physician so please bear with me if there are one or two typos.  The details will be based on real cases from my experience but, in the interests of confidentiality and after speaking with our data protection experts, key details will always be amended to ensure that no patients are identifiable. On to case 1…

A 45 year old man is brought to hospital by paramedics after being found by passers by sat on the roadside.  The paramedics can’t obtain a coherent history and score his GCS as 13/15 (E3V4 M6).  They perform an ECG and transport him to hospital.

On arrival the patient is agitated and non-compliant, has a blood pressure of 90/40, a GCS of 13 and 2mm equal and reactive pupils.  You elicit generalised abdominal tenderness with guarding.  The patient denies chest pain.  The ECG is below…

Case discussion

Here we have a patient with a diagnostic ECG for inferoposterior STEMI. There can be little doubt about that. We have up to 5mm ST elevation in leads III and aVF with deep reciprocal ST depression laterally and anterior ST depression with tall R waves suggesting posterior STEMI. The challenge in this case is the clinical presentation. The patient has no chest pain and there are things that we wouldn’t expect with a straightforward STEMI.

On the one hand, we know that time is muscle and we don’t want to delay revascularisation, whether that be by thrombolysis or PCI.  However, these treatments come with significant risks of causing major haemorrhage and that’s not something to be taken lightly when the presentation is not straightforward.  We have to consider other pathology that we might be missing, including the possibility that the STEMI could even be secondary to another disease process with associated physiological stress.

Indeed, plaque rupture is often secondary to an ‘acute risk factor’ causing surges in blood pressure.  Perhaps that helps to explain why AMI is more common on a Monday!  Due to their shape and typical position in the coronary circulation, coronary plaques may have to withstand pressures that are up to 7 times normal arterial wall stress.   Add in to the mix the fact that unstable plaques will have eaten away at their own fibrous caps leaving only the single cell layer of endothelium between the lipid-rich, procoagulant core and the circulating blood, and you can see why surges in blood pressure might lead to plaque rupture.

We also have to consider ‘STEMI mimics’ that could give us a false positive ECG.  A number of conditions can do this, and it’s worth considering these in this patient.  We may, for example, want a blood gas and a BM to exclude DKA.

So, what shall we do on a practical level for the patient in this case?  First, we need to explain that GCS.  Before we can do that, it’s just not safe to administer powerful antiplatelets or thrombolytics.  We could, for example, be seeing a subarachnoid haemorrhage complicated by STEMI here.   So I think we need a cranial CT as a standard of care.  That much is probably a given.

What about the abdomen?  There’s significant abdominal tenderness and guarding.  The question is whether we need to be sufficiently worried about that to delay treatment of the STEMI.  What are the primary diagnoses we need to consider?  For sure, we need to exclude a AAA.  Thrombolysing a patient with a leaking AAA probably isn’t going to go very well.  Fortunately, in the era of ED ultrasound it’s relatively straightforward to all but exclude that diagnosis if we can visualise the whole aorta and document a diameter of <3cm throughout.  Let’s take it that we’ve done that, and a FAST scan too.  What else do we need to worry about?

Mesenteric ischaemia has to be in there.  A normal lactate reassures us but probably doesn’t completely exclude it.  Going against that, a textbook case of mesenteric ischaemia will present with a paucity of abdominal findings, while the guarding is quite significant here.  We also need to consider conditions that could bleed – and a perforated viscus could certainly do that.  Ultimately, there’s a very good argument for a CT abdomen.

Finally, we should consider the possibility of aortic dissection.  The clinical probability is relatively low, so (taking a Bayesian approach) we could consider excluding the diagnosis on the basis of a CXR and bilateral blood pressures.  Given that we’re scanning the abdomen and head, there’s also an argument for completing a CT aortogram while we’re at it.

OK, so let’s say that we’ve got as far as obtaining a normal CT head, abdomen and aortogram. The blood gas shows a metabolic acidosis (base excess -6) and the patient’s condition remains unchanged. What should we do now? There are several options… (a) We could administer thrmobolysis. The patient is agitated, has a low GCS and is non-compliant with treatment. Undertaking an invasive procedure under these circumstances is not without risks. Thrombolysis is not as effective and has higher haemorrhagic risks – but perhaps the balance is tipped given the increased risks of a physical intervention in this particular situation. (b) We could treat the patient conservatively with antiplatelets and close observation in a Coronary Care Unit. (c) We could take the patient to the Cath Lab for primary PCI. This has the greatest efficacy but won’t be straightforward.

So what actually happens next? We opt for primary PCI, under benzodiazepine sedation. The RCA is occluded and therefore stented – with a door to balloon time of around 120 minutes. The peak troponin T is 2000ng/L. Our patient recovers uneventfully. As it turned out, this man had an acute psychosis, causing the reduced GCS. This led him to be non-compliant with cardiac medications. He had undergone a recent PCI at another institution, so this led to stent thrombosis and an inferoposterior STEMI. This was a STEMI with no chest pain – unusual but it happens.  As for the abdominal tenderness, who knows?! Our patients don’t read the text books, do they?!

Hope you enjoyed the case.  This is the first, hopefully of many, so all feedback is very gratefully received.

Rick Body

Answer: Question 1

Before we answer the question, let’s talk about how to approach these and break them down.  

First, let’s look at the question type.  This is a type 2 question.  Type 1 questions are simple, straightforward questions.  ”What is the recommended door to balloon time in a patient presenting to the ED for STEMI?”  Simple question, simple answer.  Type two questions require a mental leap.  They propose a scenario, require you to come up with a diagnosis, and then ask a question about how to either treat or diagnose that condition without giving you the name of the condition.  So for this question, I clearly want you to think the patient has a AAA.  

This brings me to the question itself.  The exam writers put information in there for a reason, and information is sometimes excluded for a reason.  So let’s go back to my question:

“A 65 year old make with a history of hypertension and a 50 pack year history of smoking presents s/p syncope and abdominal pain.  On exam, his HR is 110/min, BP 82/40, RR 16, and Pox 98% on RA.  You note abdominal tenderness in the midline, and a palpable pulsitile abdominal mass on exam.  What is your next step in the management of this patient?”

He has a history of HTN and smoking, two major risk factors for AAA.  He passed out, complains of abdominal pain, and has a palpable pulsitile mass on exam.  This is their way of telling you he has a AAA without just saying “A patient comes in with a AAA.”  

So now you made the diagnosis.  The question then, based on the answers provided, is what is the best way to make that diagnosis in this patient.  Again, look at the question above.  Your patient is hypotensive (with a history of HTN), and tachycardic.  The answer is easy if you rephrase the question as a Type 1 question:

“What is the best way to diagnose AAA in an unstable patient?”  He is unstable, so CT and MRI are out, and when was the last time you ever did standard arteriography to diagnose AAA?  The answer, of course is bedside US (Choice D). 

Another strategy I find helpful when studying is to think about how the question could be worded differently and how that would change the answer, or if different answers were provided.  What if the patient was stable, and US was not a choice?  What if instead of angiography, one of the answers was “Establish 2 large bore IV’s, volume resuscitate, type and cross for blood and early surgical consultation?”  Think about different ways the question could be phrased.  AAA is a must know for EP’s, so you know you’ll see it.  

Beware of Tattoos

 

My personal opinion is that the majority of tattoos make people look trashy.  No, you don’t look “edgy”, you look low brow.  Not to say that everyone who gets one IS low brow, but it cheapens your appearance. Especially if you are super pale, fat, and or schlubby with skinny little arms.  It also depends on where it is, what it is,  and the size.  In general, isolated small ones of things like roses or other flowers on the ankle look OK, while “Tramp Stamps” and “sleeves” make you looks like a slut, poseur,  IVDA patient trying to cover up needle marks,  or a hoodlum.  I don’t get these stupid-assed reality shows that glorify the tattoo business. It appears that many of the people that work there are either drug addicts, recovering addicts, or ex-cons.   Also, just think how it will look when you are 85 years old and all shriveled up?  Personally, if I were an ED director, I would not hire a doctor with a tattoo visible in work clothes.

Anyway, enough of my personal opinions. There is another reason to be wary of tattoos.  Infection. Traditionally, infections come from nonsterile needles or from artists who don’t wear gloves.  Hepatitis and AIDS are of course the most worrisome things you can get from a tattoo. However, now there is a new source of nastiness.  The ink.  A recent outbreak of a bacteria, Mycobacterium chelonae, a relative of tuberculosis, in people who got tattoos from a parlor in New York, was found to originate from an unopened bottle of ink.  In the past, ink has caused infections because it was diluted with nonsterile water, but this was in untouched samples. Not much you can do about avoiding that – except not getting a tattoo!

Epi is Good in Arrest…This Week

Epi is bad! Epi is good! Which is it? Well, this week it's good to give epi in out-of-hospital cardiac arrest (OHCA). Seriously, I think this article is pretty compelling for the use of epinephrine in OHCA.

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