Dr. Smith's ECG Blog

AUGUST 14, 2024

R waves 6 through 9 have no preceding P waves and are suspiciously regularly spaced. Depolarization wavefronts exit the sinus node through one or several sinoatrial conduction pathways (SACP) as seen in the histology section below taken from Li et al. Impulses E, F, G, H, and I were blocked. This is consistent with sinus rhythm.

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Pediatric EM Morsels

AUGUST 18, 2023

Myth #1: Musculoskeletal Adverse Events (MAE) This concern is likely the most common reason fluoroquinolones are rarely used in children. Musculoskeletal Adverse Events include: Articular cartilage damage causing arthralgias or arthritis , Tendonitis , and Tendon rupture. Which is a risk of 1 event for 62.5

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ACEP Now

NOVEMBER 8, 2024

1 Prehospital endotracheal intubation and EGAs are typically placed without paralytics and are reserved for unconscious, apneic, and out-of-hospital cardiac arrest patients. 9 LMAs use an inflatable mask expanded using a similar technique to the endotracheal tube cuff. Benger JR, Kirby K, Black S, et al. 2014;4(1):77-87.

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Don't Forget the Bubbles

NOVEMBER 22, 2023

Of these signs, mortality in children is associated with hepatomegaly and fever; meanwhile, mortality in adults is associated with hyperkalaemia, traumatic brain injury, propofol infusion rates >5mg kg -1 h -1 and ECG changes. 1998;8(6):491-9. Vanlander AV, Okun JG, de Jaeger A, Smet J, De Latter E, De Paepe B, et al.

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EMDocs

MAY 11, 2024

CT head without contrast 1 is performed and reveals the following: Question: What is the diagnosis? Some refer to an ischemic event in this territory with clinical findings as posterior inferior cerebellar artery syndrome. Reference article, Radiopaedia.org (Accessed on 28 Aug 2023) [link] Ortiz de Mendivil A, Alcalá-Galiano A, et al.

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EMS 12-Lead

AUGUST 22, 2022

Question 1: What is the rhythm? Beat 1 : Sinus, narrow QRS complex. The assumption is that a premature complex discharged prior to Beat 1, which prolonged its respective refractory period in the same manner as Beat 5. We can, therefore, put down the defibrillation pads, set aside the amiodarone, and look further at the ECG.

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REBEL EM

MAY 27, 2024

No significant differences in heart rate 1 minute after cardioversion were observed between the three groups. There are no significant adverse events from the combination therapy.” Our Conclusion: This study presents a novel topic but is riddled with methodological flaws. Duration of Antiarrhythmic Effect: MVM group: 35.44

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EMDocs

MARCH 2, 2024

Answer : Pneumocephalus 1-21 Background: Pneumocephalus is defined by the presence of air within the cranial cavity. 1-3] The most common location is the frontal region, followed by the occipital and temporal regions. [4] 1-3] The most common location is the frontal region, followed by the occipital and temporal regions. [4]

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REBEL EM

JANUARY 25, 2024

Article: Arvig MD, Lassen AT, Gæde PH, et al. What They Did: Design: Randomized, controlled, blinded-outcome trial Sites: Three emergency departments in Denmark Duration: October 9, 2019 to May 26, 2021. The first evaluation of the patient was to be done within 1 hour of arrival to ED (Including the first POCUS). Emerg Med J.

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REBEL EM

SEPTEMBER 13, 2023

Features Urticaria and pruritis Rapid onset (1-2 hours) IgE Dependent (Type I Hypersensitivity) Reactions An allergen cross-links two or more IgE molecules on mast cells or basophils and initiates a signal cascade leading to degranulation. PMID 25629740 Hassen GW et al. PMID 23062323 Kostis JB et al. N Engl J Med. 2013;24:53-66.

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REBEL EM

FEBRUARY 5, 2024

Article: Marx T, Joly LM, Parmentier AL, et al. Sites: Investigators recruited patients at 31 French emergency departments at university and nonuniversity hospitals Duration : June 1, 2009 to March 31, 2015. Recurrence of pneumothorax within 1 year. Adverse events: Similar rates of major complications in both groups.

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EMDocs

APRIL 10, 2024

1-5] Since then, many more medications have been developed and deployed. 1-5] This post focuses on the identification and management of Local Anesthetic Systemic Toxicity (LAST). 3-5,7] Symptom onset is usually within 1 minute of intravascular injection but can be delayed if multiple injections or continuous infusion. [5]

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Dr. Smith's ECG Blog

NOVEMBER 15, 2023

Post cath ECG: Now there are hyperacute T-waves again, and recurrent ST depression in V2 This ECG would normally diagnostic of OMI until proven otherwise No further troponins were measured, but it looks like there is recurrent OMI Next day: A CT Coronary Angiogram was done (CTCA) CARDIAC MORPHOLOGY AND FUNCTION: 1. IMPRESSION: 1.

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EMDocs

OCTOBER 30, 2023

1 The shortage in supply posed difficulties for hospitals that significantly depend on GE Healthcare as their supplier, which encompassed approximately 50% of hospitals in the United States (US). 11 Table 1. Preparation 9 Hospitals had to prepare for the impending contrast shortage as soon as potential shortage news occurred.

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Don't Forget the Bubbles

JUNE 17, 2024

Once a sufficiently high level is achieved, modelling of behaviours and episodes of retaliation can perpetuate the behaviours far beyond the initial event. Here are ten things to think about: 1. Churruca K, Pavithra A, McMullan R, Urwin R, Tippett S, Cunningham N, Loh E, Westbrook J. 2014 Jun 26;23(12):653-9. 2020 Aug 20.

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EMDocs

MARCH 30, 2024

Comprehensive physical exam is unremarkable, but she does have pain at the T-12/L-1 region of her back. Her patellar reflexes are 1+ bilaterally, no ankle clonus is noted, and she denies any saddle anesthesia or bowel/bladder incontinence. CT of lower spine is ordered and shows the following: 1 What is the diagnosis?

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Don't Forget the Bubbles

MAY 8, 2024

You will find the list is broken down into four sections: 1.Reviews Dell KM, et al. Eisen S et al. Fielder AR, et al. Bm MV, et al. 2024 Apr 9. Toepfner N, et al. Toniutti M, et al. Meoli M, et al. Ashton JJ, et al. Ding G et al. Tanti DC, et al. Ahlqvist VH, et al.

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Don't Forget the Bubbles

MAY 6, 2024

Article 1: Positive urine cultures without pyuria Wang ME, Jones VG, Kane M, et al. Clinical Course of Children 1 to 24 Months Old With Positive Urine Cultures Without Pyuria. 2024;24(1):111-118. It has a high rate of first-attempt failure and carries the risk of severe procedure-related adverse events.

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REBEL EM

JULY 3, 2023

Article: Rossi N et al. Investigators enrollend 660 patients in 9 years in 5 EDs; or approximately 6 patients per month; or 1 patient per /month for each ED. The inclusion of p-values in Table 1 might lead to misinterpretation or improper use of statistical significance. Am J Emerg Med.

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ACEP Now

FEBRUARY 13, 2024

A radiograph is shown (see figure 1). LEARN MORE The most common nerve blocks in this study are shown in Table 1. 1–4 Emergency physicians commonly prescribe opioid pain medications, and there is significant variability among prescribing patterns. In the January issue of Annals of Emergency Medicine , Merz-Herrara, et al.,

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ACEP Now

OCTOBER 11, 2024

1 Pediatric rapid sequence intubation (RSI) in the ED is associated with a higher frequency of failed first attempts and adverse effects than in adult patients. 2 One study found that up to two thirds of pediatric patients experienced at least one adverse event during RSI. Induction agents include etomidate, typically dosed at 0.2–0.4

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Dr. Smith's ECG Blog

APRIL 22, 2022

But these cases show the potential dangers of delayed recognition and treatment of inferior reperfusion Take away 1. ECG’s can be labeled as ‘normal’ by the computer (and confirmed by cardiology) even with diagnostic signs of occlusion or reperfusion References 1. Backus BE, Six AJ, Kelder JC, et al. JAMA Intern Med 2019 9.

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Dr. Smith's ECG Blog

MARCH 22, 2022

It meets basically all of the criteria that Dr. Smith has consistently described over the years, after reviewing a large cohort of patients by Wang et al. see below for more info on this) 1. BOTTOM Line: Great point by Dr. Meyers to emphasize the strong likelihood of a benign prognosis associated with tracings like ECG #1 in Figure-1.

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ACEP Now

JANUARY 9, 2024

FIGURE 1: Abdominal X-ray showing particulate radiopaque foreign bodies involving the stool. 1 Children are particularly vulnerable. 9 Lead exerts its toxic effects by interfering with various organ functions, primarily targeting the nervous system and hematopoietic system, as well as impairing liver and kidney functions.

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Dr. Smith's ECG Blog

MAY 5, 2023

. = Dr. Smith was reading ECGs — and he sent myself and Dr. Meyers the tracing shown in Figure-1. Figure-1: The initial ECG in today's case. Our Initial Thoughts on the ECG in Figure-1: Dr. Meyers said the following: "I see 2 different atrial foci — one sinus and one ectopic. At the time we did not yet know the history.

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NAEMSP

APRIL 19, 2023

Current AHA guidelines do not recommend routine use of calcium in cardiac arrest (Panchal, et al., Calcium acts as a vasopressor and inotropic agent (Lindqwister, et al., This CI does include 1; and further and further analysis of the data showed that the likelihood that calcium has a beneficial effect (e.g.

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REBEL EM

JANUARY 23, 2023

Article: Abella BS et al. Patients were randomized in a 1:1 ratio. T5 (3.9%) patients with adverse events were reported in the IV Cetirizine group compared to 18 (3.9%) in the IV diphenhydramine group. Risk of first-generation H(1)-antihistamines: a GA(2)LEN position paper. 2005 Sep;116(3):643-9.

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Dr. Smith's ECG Blog

NOVEMBER 30, 2022

mm of ST segment elevation, V2 and V3 have 1 mm of elevation, v4 has 2 mm of elevation and v5 around 1.5 Takotsubo is a sudden event, not one with crescendo angina. Note 1: Levels were significantly lower in takotsubo that presented with T-wave inversion. Reference on Troponins: Xenogiannis I, Vemmou E, Nikolakopoulos I, et al.

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REBEL EM

JANUARY 19, 2023

Paper: Hallifax RJ et al. Patients were randomly assigned 1:1 to treatment with either an ambulatory device or standard guideline-based management (aspiration, standard chest tube insertion, or both). Patients were observed for 1-2 hours for clinical stability, and placement was confirmed with a chest x-ray.

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Dr. Smith's ECG Blog

MARCH 9, 2023

He had episodes of chest pain off and on all night, until about 1 hour prior to arrival when the pain became constant, crushing, 10/10 chest pain that radiated to both arms. Proven STEMI has an open artery in 19% to 36% of cases, depending on whether it is TIMI −1, −2, or −3 flow. 25] Stone et al found that 72% have TIMI 0 or 1 flow.

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REBEL EM

DECEMBER 28, 2022

Article: Drekonja DM et al. Approx 1 in 4 (23%) patients with a urine culture had no bacterial growth, which may dilute any effect of treatment duration or choice of agent. Approx 1 in 4 patients (23%) with a urine culture had no growth. Inclusion for enrollment was subjective. had a pretreatment urine culture.

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REBEL EM

JULY 18, 2022

Paper: Zahed R, Moharamzadeh P, Alizadeharasi S et al. 2013 Sep;31(9):1389-92. Adverse Effects: No serious adverse events were noted. The NoPAC trial, which was published in 2021,(1) compared TXA to placebo in a large multicenter randomized control trial in the UK which looked at data from 26 emergency departments.

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Dr. Smith's ECG Blog

MAY 19, 2022

The Cardiorespiratory Implications of Ultra-marathon Bjørkavoll‐Bergseth et al. Paana et al. Regarding the History: It sounds from the History as if this patient has at least a significant component of EIA ( E xercise- I nduced A sthma ). It also sounds from events described that he was unaware of this possibility.

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Dr. Smith's ECG Blog

SEPTEMBER 7, 2020

The Differential Diagnosis is: SVT with aberrancy(#) [AVNRT vs. WPW (also called AVRT*)] Atrial flutter with 1:1 conduction, with aberrancy VT coming from the anterior fascicle ( fascicular VT )@ *AVRT = AV Reciprocating Tachycardia (Tachycardic loop that uses both the AV node and an accessory pathway. See Learning point 1 below.

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Pediatric EM Morsels

MARCH 7, 2025

Shakur H, Roberts I, Bautista R, Caballero J, Coats T, Dewan Y, El-Sayed H,Gogichaishvili T, Gupta S, Herrera J, Hunt B, Iribhogbe P, Izurieta M, Khamis H, Komolafe E, Marrero MA,Meja-Mantilla J, Miranda J, Morales C, Olaomi O, Olldashi F, Perel P, Peto R, Ramana PV, Ravi RR,Yutthakasemsunt S. 2012 Feb;147(2):113-9. 2020;2(1):e0075.

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Dr. Smith's ECG Blog

DECEMBER 27, 2018

I do research on Cardiologs' algorithm: Smith SW et al. S-wave is in V2 = 17 mm S-wave V4 = 9 mm Total = 26 (not greater than 28), so not LVH by the new rule! Peguero JG et al. For clarity — I’ve reproduced this ECG, to which I’ve made a few additions ( Figure-1 ). If the total is greater than 2.3

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Dr. Smith's ECG Blog

JULY 12, 2020

I found a well appearing young lady in the room with her parents who witnessed the event. She denied having any symptoms before or after the event, and she was asymptomatic on my initial exam. She was diagnosed with pericarditis and spent one day in the hospital without events. mm STE depression in aVL. Prac 15(17), 2017.

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