Dr. Smith's ECG Blog

JUNE 5, 2024

As per my review of this subject ( Check out My Comment at the bottom of the page in the November 16, 2023 post in Dr. Smith's ECG Blog ) — the 3 most common Causes of ACS ( A cute C oronary S yndrome ) with a "negative" cath are: i ) Myocarditis; ii ) Takotsubo cardiomyopathy; and , iii ) MINOCA.

Coronary 122

Coronary ACS ALS OR 122

Dr. Smith's ECG Blog

OCTOBER 26, 2010

ACS and STEMI generally do not cause tachycardia unless there is cardiogenic shock. Then ACS (STEMI) might be primary; this might be cardiogenic shock. One must clearly rule out these processes before jumping on the ACS diagnosis. Are the lungs clear? Is the patient cool and pale? Large volume fluid resuscitation was undertaken.

ACS 52

ACS STEMI OR Critical Care 52

Dr. Smith's ECG Blog

DECEMBER 22, 2023

The patient has active chest pain, so if these are abnormally large T-waves This link shows 13 blog posts of Posterior Reperfusion T-waves. Comment : ACS with persistent symptoms is a guideline recommended indication for ＜2 hour angio (both ACC/AHA and ESC). But it certainly shows no sign of OMI. Or does it?

ACS 116

ACS STEMI OR 116

Dr. Smith's ECG Blog

JUNE 17, 2024

showed that , when T-waves are inverted in precordial leads, if they are also inverted in lead III and V1, then pulmonary embolism is far more likely than ACS. In this study, (quote) "negative T waves in leads III and V 1 were observed in only 1% of patients with ACS compared with 88% of patients with Acute PE (p less than 0.001).

E-9-1-1 138

E-9-1-1 ACS Emergency Department Coronary 138

Dr. Smith's ECG Blog

MARCH 14, 2024

These have all been small studies, studying very few patients with ACS, and often used final cardiology interpretation rather than patient outcome. Smith : This study had such low risk patients that not a single patient was ultimately diagnosed with ACS. It is well known that NOMI usually has a normal ECG or nonspecific ECG.

STEMI 119

STEMI ACS Coronary Emergency Department 119

Dr. Smith's ECG Blog

MAY 3, 2024

RBBB + LAFB in the setting of ACS is very bad. Some patients have baseline RBBB with LAFB, but in patients with likely ACS, these are associated with severe infarction with cardiac arrest, cardiogenic shock or impending shock. Patients with ACS and RBBB/LAFB usually have a left main vs. proximal LAD. There is STE in aVR.

ACS 126

ACS ED Coronary EMS 126

EMS 12-Lead

APRIL 14, 2022

It should be emphasized here that this is a presentation of high-pretest probability for Acute Coronary Syndrome (ACS). ACE inhibitors, or potassium-sparing diuretics), are particularly susceptible. In the case of ACS, the ECG can rapidly change from this. Past medical history included HTN, HLD, and MI 10 years prior.

ACS 130

ACS Paramedic Coronary ALS 130

Dr. Smith's ECG Blog

DECEMBER 11, 2023

Smith : As Willy states, ACS with persistent symptoms is a guideline recommended indication for ＜2 hour angio (both ACC/AHA and ESC). Smith : As Willy states, ACS with persistent symptoms is a guideline recommended indication for ＜2 hour angio (both ACC/AHA and ESC). So I would be worried about inferior OMI. At midnight.

E-9-1-1 123

E-9-1-1 ACS Coronary STEMI 123

Dr. Smith's ECG Blog

JULY 2, 2023

This was texted to me from a former resident, while working at a small rural hospital, with the statement: "I can’t convince myself of anything here, but he’s a 63-year-old guy with prior stents and a good story for ACS." Thank you for your work with the artificial intelligence and the blog to make people better at this.

ACS 52

ACS Coronary OR 52

Dr. Smith's ECG Blog

OCTOBER 20, 2024

The ST segment changes are compatible with severe subendocardial ischemia which can be caused by type I MI from ACS or potentially from type II MI (non-obstructive coronary artery disease with supply/demand mismatch). sepsis, anemia, hypoxemia, severe hypotension etc., Unless some LMCA flow is restored he will not survive.

Coronary 128

Coronary ACS Emergency Department Defibrillator 128

Dr. Smith's ECG Blog

SEPTEMBER 25, 2024

A healthy 45-year-old female presented with chest pain, with normal vitals. The computer interpretation was “ST elevation, consider early repolarization, pericarditis or injury.” What do you think? There’s normal sinus rhythm, normal conduction, borderline right axis, and normal voltages. There’s TWI in aVL but this is concordant to its QRS.

OR 66

OR STEMI ACS Coronary 66

Broome Docs

DECEMBER 22, 2024

You can find more details in the full blog post. PECARN looks at probiotics for toddlers diarrhea… Schnadower D, Tarr PI, Casper TC, Gorelick MH, Dean JM, O’Connell KJ, Mahajan P, Levine AC, Bhatt SR, Roskind CG, Powell EC, Rogers AJ, Vance C, Sapien RE, Olsen CS, Metheney M, Dickey VP, Hall-Moore C, Freedman SB.

E-9-1-1 52

E-9-1-1 ACS Paramedic Emergency Department 52

Dr. Smith's ECG Blog

MAY 20, 2024

This was sent by an undergraduate (not yet in medical school, but applying now) who works as an ED technician (records all EKGs, helps with procedures, takes vital signs) and who reads this blog regularly. Smith comment : Is the ACS (rupture plaque) with occlusion that is now reperfusing? The ST depressions in I and aVL have resolved.

CAD 125

CAD STEMI Coronary ACS 125

EMS 12-Lead

APRIL 21, 2022

Dedicated followers of the Smith ECG Blog know that the STD of true subendocardial ischemia does not localize, yet some of the examples listed below demonstrate the opposite, and were subsequently labeled “diffuse ischemia” or “generic subendocardial changes” as a diagnosis of convenience. Here is the time-zero ECG (0939 hours).

Coronary 130

Coronary ALS OR ACS 130

Dr. Smith's ECG Blog

APRIL 9, 2024

ACS then becomes less likely. Keep an eye on the blog as an OMI QUIZ soon will be published where you test yourself vs the Queen! On arrival patient was slightly tachycardic. HR about 90-100/min. Other vital signs normal. Hand held echo showed overall ejection fraction being normal. With normal EF the tachycardia is not compensatory.

Coronary 108

Coronary CAD ACS OR 108

Dr. Smith's ECG Blog

OCTOBER 4, 2010

ACS would be highly unusual in a young athlete, and given the information on his race bib, one must first suspect that the abnormal ST elevation is due to demand ischemia, not ACS. His initial ECG is shown here. A bedside echo performed by the emergency physician showed no wall motion abnormality and confirmed LVH.

ACS 52

ACS Defibrillator Epinephrine STEMI 52

REBEL EM

MAY 29, 2024

VS abnormalities can drive this as well Strongly consider reversal of AC (this will typically come after control) Stopping the Bleeding PPE: these things bleed like stink. Rezaie, MD (Twitter/X: @srrezaie ) The post REBEL Core Cast 123.0 – Posterior Epistaxis appeared first on REBEL EM - Emergency Medicine Blog.

ICU 104

ICU ALS ACS EMS 104

Dr. Smith's ECG Blog

DECEMBER 19, 2023

Because there was proven thrombus (ACS) but the troponin never went above the 99% reference range (and therefore cannot be called MI -- definition of MI requires rise and/or fall of troponin with at least one value above the 99% reference range), this is UNSTABLE ANGINA with ST Elevation. Fortunately, that is exactly what happened.

E-9-1-1 127

E-9-1-1 Coronary ACS BLS 127

Dr. Smith's ECG Blog

FEBRUARY 9, 2024

If there were diffuse ischemic STD, with precordial STDmaxV5-6 and reciprocal STE-aVR, this would be non-specific subendocardial ischemia from ACS or supply-demand mismatch. The new ESC guidelines has for the first time merged both STEMI and non-STEMI in the same guideline because they are both on the spectrum of ACS.

STEMI 114

STEMI ACS Coronary OR 114

Dr. Smith's ECG Blog

AUGUST 19, 2023

But because the patient had no chest pain or shortness of breath, it was not deemed to be from ACS. But because the patient had no chest pain or shortness of breath, it was not deemed to be from ACS. They were less likely to have STEMI on ECG, and more likely to be initially diagnosed as non-ACS. Potassium was normal.

STEMI 98

STEMI ACS OR ALS 98

Dr. Smith's ECG Blog

JANUARY 5, 2024

Thus, these troponins are very concerning for ACS, and subsequent ones will probably be diagnostic of acute MI. Evidence regarding intervention to non-culprit plaques is mixed and beyond the scope of this blog post. A diagnosis of "reflux" or "GERD" is never supportable without a troponin rule out. His angiogram is shown below.

ACS 120

ACS ALS OR STEMI 120

Dr. Smith's ECG Blog

SEPTEMBER 9, 2024

The patient was thought to have low likelihood of ACS, and cardiology recommended repeat troponin, urine drug testing, and echocardiogram. At that point, cardiology elected to treat for ACS. NOTE: For review of 20 cases of "Swirl" vs Swirl "Look-Alikes" — Check out the October 15, 2022 post in Dr. Smith's ECG Blog.

OR 66

OR Coronary ACS EMS 66

Dr. Smith's ECG Blog

JANUARY 9, 2024

Ischemia from ACS causing the chest discomfort, with VT another consequence (or coincidence)? Cardioversion will address the rhythm problem immediately, also if the chest discomfort subsides when SR is restored, ischemia from ACS becomes much less likely. In either case, prompt cardioversion is indicated.

Coronary 119

Coronary ACS ED OR 119

Dr. Smith's ECG Blog

NOVEMBER 14, 2023

Smith's ECG Blog — the evolution of an acute OMI is not necessarily static — but may be "dynamic". For examples of this phenomenon — See My Comment in the February 14, 2018 — July 21, 2020 — and December 22, 2022 posts in Dr. Smith's ECG Blog ). The emergency physician was skeptical and believed the ECG to be a mimic, a false positive.

E-9-1-1 116

E-9-1-1 Coronary EMS ED 116

REBEL EM

JANUARY 29, 2024

Click here for Direct Download of the Podcast Paper: Aykan AC et al. Because the lungs receive 100% of cardiac output, it has been hypothesized that a lower dose of thrombolytic therapy may still be effective with a better safety profile [3][4]. REBEL Cast Ep123: Reduced-Dose Systemic Peripheral Alteplase in Massive PE?

ALS 136

ALS ACS OR CPR 136

Dr. Smith's ECG Blog

NOVEMBER 15, 2023

Angiogram No obstructive epicardial coronary artery disease Cannot exclude non-ACS causes of troponin elevation including coronary vasospasm, stress cardiomyopathy, microvascular disease, etc. It is not yet available, but this is your way to get on the list. link] Case continued She arrived in the ED and here is the first ED ECG.

Coronary 109

Coronary E-9-1-1 STEMI ACS 109

REBEL EM

NOVEMBER 30, 2023

Article: Vaeli Zadeh A, Wong A, Crawford AC, Collado E, Larned JM. References: Vaeli Zadeh A, Wong A, Crawford AC, Collado E, Larned JM. Rezaie, MD (Twitter/X: @srrezaie ) The post Congestive Heart Failure and Sepsis: A Closer Look at Fluid Management appeared first on REBEL EM - Emergency Medicine Blog. 2.89, p = 0.01.

E-9-1-1 121

E-9-1-1 ALS ACS ICU 121

Dr. Smith's ECG Blog

APRIL 18, 2024

Non-STEMI guidelines call for “urgent/immediate invasive strategy is indicated in patients with NSTE-ACS who have refractory angina or hemodynamic or electrical instability,” regardless of ECG findings.[1] 1] European guidelines add "regardless of biomarkers". But only 6.4%

STEMI 121

STEMI Coronary ALS CAD 121

Dr. Smith's ECG Blog

OCTOBER 12, 2024

Click here to sign up for Queen of Hearts Access Given the lack of intracranial hemorrhage, the patient was administered aspirin for suspected ACS and cardiology was consulted. or basilar ischemia. EKG on arrival to the ED is shown below: What do you think? However, T waves do not appear to be hyperacute or hyperkalemic. Version 2 = 0.0272.

STEMI 115

STEMI Coronary Emergency Department ACS 115

Dr. Smith's ECG Blog

DECEMBER 12, 2022

You must understand this and the dynamic nature of ACS to provide excellent care for such patients. Here is the OMI progression of ECG findings for review: You can see that OMI ECG findings must "deflate" and pass through normal or near-normal in order to get to reperfusion findings. This is termed " pseudo-normalization."

OR 52

OR ACS STEMI Coronary 52

Dr. Smith's ECG Blog

OCTOBER 25, 2023

Moreover, the Queen is only supposed to be used with a high pretest probability of ACS/OMI. QTc/QUc is in the range of 630 msec. What is the most likely cause of the patient’s ECG findings, and what would be your first step in management? We just finished training version 2 with some cases of hypokalemia, so that is in the future.

Overdose 123

Overdose ACS OR ICU 123

Dr. Smith's ECG Blog

AUGUST 9, 2024

This has been discussed many times before on this blog. In-depth discussion is beyond the scope of this blog. Similarly, the OMI paradigm respects ACS as a dynamic process in which ECG changes reflect the phase of myocardial injury and risk stratify which patients may benefit from emergent PCI. Leave it alone.

STEMI 107

STEMI Coronary Heart Attack ACS 107

Dr. Smith's ECG Blog

NOVEMBER 1, 2022

He had been smoking an opiate and suddenly collapsed. He was ventilated with BVM on arrival. He awoke with naloxone. This EKG was recorded as part of a standing order for critical care. He denied any CP or SOB. An EKG was repeated at 5 minutes The T-wave is less hyperacute. Maybe there is some spontaneous reperfusion? It does not radiate.

Overdose 52

Overdose OR Coronary ACS 52

Dr. Smith's ECG Blog

JANUARY 27, 2024

There were zero patients in this study with a "normal" ECG who had any kind of ACS! This defies all previous data on acute MI which would show that even undetectable troponins do not have a 100% negative predictive value. So this study is actually worthless. Deutch et al. West J Emerg Med 2024).

STEMI 117

STEMI Coronary ACS ED 117

Dr. Smith's ECG Blog

APRIL 17, 2023

He had no symptoms of ACS. His HEAR score (before troponin resulted) was documented at 3, with documentation stating "low suspicion for ACS." A troponin this high in a patient with no known chronic troponin elevation, and active acute ACS symptoms, has a very high likelihood of type 1 ACS regardless of the ECG.

OR 52

OR STEMI ACS Emergency Department 52

Dr. Smith's ECG Blog

JULY 11, 2024

Because: 1) He has been reading this blog for a long time. Editorial Comment: I begin my thoughts on today's Blog post with the above reflections to provide perspective for my concerns about this case. This is another case sent by the undergraduate (who is applying to med school) who works as an EKG tech.

Coronary 112

Coronary ED ACS OR 112

REBEL EM

SEPTEMBER 11, 2023

ACS surgeons appeared to select surgery as their initial choice substantially more frequently than other subspecialties. ACS surgeons would have sent 6/43 patients for ERCP or MRCP (14%), whereas surgical oncologists would have sent a higher percentage of patients for ERCP or MRCP (7/18 or 38.9%). and specificity of 88.0%

ED 68

ED ACS Emergency Department OR 68