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Drug: Amiodarone
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Total 80 results found since Jan 2013.
A 50-something with Regular Wide Complex Tachycardia: What to do if electrical cardioversion does not work?
Case submitted by anonymous. Written by Smith. Ken ' s piece at the bottom is excellent.A 50-something presented with sudden onset palpitations 8 hrs prior while sitting at desk at work. He had concurrent sharp substernal chest pain that resolved, but palpitations continued.Over past 3 months, he has had similar intermittent episodes of sharp chest pain while running, but none at rest. Past medical history includes coronary stenting 17 years prior. A brief chart review revealed his most recent echo in 2018, with LV EF 67%, “very small” inferior wall motion abnormality.Initial ED ECG:What do you think?This wa...
Source: Dr. Smith's ECG Blog - September 20, 2023 Category: Cardiology Authors: Steve Smith Source Type: blogs
A 50-something with Regular Wide Complex Tachycardiaa: What to do if electrical cardioversion does not work?
Case submitted by anonymous. Written by Smith. Ken ' s piece at the bottom is excellent.A 50-something presented with sudden onset palpitations 8 hrs prior while sitting at desk at work. He had concurrent sharp substernal chest pain that resolved, but palpitations continued.Over past 3 months, he has had similar intermittent episodes of sharp chest pain while running, but none at rest. Past medical history includes coronary stenting 17 years prior. A brief chart review revealed his most recent echo in 2018, with LV EF 67%, “very small” inferior wall motion abnormality.Initial ED ECG:What do you think?This wa...
Source: Dr. Smith's ECG Blog - September 20, 2023 Category: Cardiology Authors: Steve Smith Source Type: blogs
Wide complex tachycardia and hypotension in a 50-something with h/o cardiomyopathy -- what is it?
A 50-something male with unspecified history of cardiomyopathy presented in diabetic ketoacidosis (without significant hyperkalemia) with a wide complex tachycardia and hypotension.Bedside echo showed " mildly reduced " LV EF.Here is the ED ECG:What do you think?Analysis: there is a wide complex tachycardia. It is regular. There are no P-waves. The morphology is of RBBB and LAFB. The initial part of the QRS is very fast, suggesting that it starts in conducting fibers and not in myocardium. Thus, it is probably SVT with aberrancy (RBBB + LAFB) or it is posterior fascicular VT (which starts in the pos...
Source: Dr. Smith's ECG Blog - June 23, 2023 Category: Cardiology Authors: Steve Smith Source Type: blogs
A young man with another episode of tachycardia. What is it? And why give adenosine in sinus rhythm?
Written by Bobby Nicholson MD and Pendell MeyersA man in his 30s presented to the ED for evaluation of chest pain and palpitations. He described it as a " jackhammering " sensation, associated with palpitations, diaphoresis, and shortness of breath, and he stated it started soon after consuming an " energy drink " (product/contents unknown).He stated these symptoms were the same as a prior episode which required cardioversion. He states that he has
a heart condition which he does not know the name of and that he has felt his
heart race like this once before and needed to be shocked. He was seen by a
cardiologist in fo...
Source: Dr. Smith's ECG Blog - June 11, 2023 Category: Cardiology Authors: Pendell Source Type: blogs
A young lady with wide complex tachycardia. My first time actually making this diagnosis de novo in real life in the ED!
Written by Pendell MeyersA woman in her 30s with minimal past medical history presented simply stating she was " feeling unwell. " Her symptoms started suddenly about 48 hours ago, but had continued to worsen, including epigastric discomfort, nausea, cough, and dyspnea and lightheadedness on exertion. She denied chest pain and denied feeling any palpitations, even during her triage ECG:What do you think?Despite otherwise normal vital signs, she was appropriately triaged to the critical care area of the ED.She was awake, alert, well perfused, with normal mental status and overall unremarkable physical exam except for ...
Source: Dr. Smith's ECG Blog - June 3, 2023 Category: Cardiology Authors: Pendell Source Type: blogs
P wave spotting in AF is not forbidden
Fibrillation is a continuous, chaotic muscular activity. In AF, atrial muscle is expected to lose all coordinated contractions with fibrillatory waves replacing P waves. Have you ever spotted a suspicious P wave in a strip of otherwise explicit AF? If not, this write-up is not for you.
An evolving rare theme in Atrial fibrillation
Have a look at this ECG
Here is an ECG, that was reported as AF, multiple APDs, or Possible AF, Pre AF. I suggested the term AF in transition. While few agreed, many said it is a straightforward SR with APDs, making it appear irregular RR.
But, the fact of ...
Source: Dr.S.Venkatesan MD - March 8, 2023 Category: Cardiology Authors: dr s venkatesan Tags: Uncategorized cardiology research topics for fellows causes of absent p wabes p vs f waves in af p waves in atrial fibrillation research topics in atrial fibrillation Source Type: blogs
Digoxin amiodarone interaction
Important drugs which can increase the levels of digoxin are quinidine, verapamil, amiodarone and dronedarone [1]. The dose of digoxin should be halved with concomitant use of verapamil, amiodarone or dronedarone. Drugs with high levels of protein binding displace digoxin from protein binding sites and increase the effective blood levels of digoxin. Monitoring of plasma digoxin levels and frequent evaluation for signs and symptoms of digoxin toxicity are recommended while using these drugs in combination with digoxin, when that combination is deemed essential.
Another reason for caution while combining digoxin and amiodar...
Source: Cardiophile MD - November 20, 2022 Category: Cardiology Authors: Johnson Francis Tags: General Cardiology Source Type: blogs
A man in his 40s with multitrauma from motor vehicle collision
DiscussionThis is a case where clinical context is of vital importance, because the EKG manifestations of cardiac contusion are fairly unpredictable. Intramyocardial hemorrhage, edema, and necrosis of myocardial muscle cells are characteristics of cardiac contusion. All of these cause troponin elevation, making troponin a very specific marker for cardiac injury. It is suggested that a troponin that is within normal reference range at about 4-6 hours from the inciting event suggests strongly the absence of cardiac injury in blunt chest trauma (Sybrandy).The EKG is not generally sensitive for cardiac contusion. The right ven...
Source: Dr. Smith's ECG Blog - August 6, 2022 Category: Cardiology Authors: Pendell Source Type: blogs
A woman in her 30s with sudden chest pain, nausea, and diaphoresis. Was her cardiology management appropriate?
Case written and submitted by Brandon Fetterolf MD, edits by MeyersA woman in her early 30s with multiple autoimmune disorders including vasculitis presented with 2-3 hours of mid-left side chest discomfort with radiation to neck and left arm and associated with nausea, diaphoresis and dizziness. Initial ECG on presentation at 1554 (no prior for comparison):What do you think is happening to his 30s woman? The ECG shows NSR with a normal QRS except for poor R wave progression and pathologic QS-waves in V2-3. There is STE and hyperacute T waves in V2, I, and aVL with reciprocal STD in II, III, and aVF. This is...
Source: Dr. Smith's ECG Blog - April 8, 2022 Category: Cardiology Authors: Pendell Source Type: blogs
An asymptomatic man in his 50s with heart rate in the 160s - what is the diagnosis? How will you manage this?
Written by Pendell MeyersA man in his late 50s with history of CAD with CABG, COPD, smoking, cirrhosis, and other comorbidities presented for an outpatient scheduled stress test which had been ordered for some exertional shortness of breath, palpitations, and presyncopal episodes over the past few months. When he presented to the office for the stress test, his screening vitals before any test or intervention were remarkable only for a heart rate of 160 bpm. He denied any symptoms whatsoever.A 12-lead ECG was performed in the office:What do you think?The ECG shows a wide complex regular monomorphic tachycardia. I mea...
Source: Dr. Smith's ECG Blog - April 2, 2022 Category: Cardiology Authors: Pendell Source Type: blogs
March 2022: Is It Really a Seizure?
The EMS notification was that a 71-year-old man was going in and out of seizures. His vital signs were stable.I followed the stretcher into the room when they arrived five minutes later. The EMS crew reported that he had previously had a stroke, but he wasn't on any medications for seizure. The family called 9-1-1 because he had been going in and out of seizures for 20 minutes. He suddenly became unresponsive during these episodes, but came back to himself immediately.The patient had another episode while being placed on the monitor. He stopped talking and his limbs shook, and it seemed that his eyes deviated to the left. ...
Source: Lions and Tigers and Bears - March 1, 2022 Category: Emergency Medicine Tags: Blog Posts Source Type: blogs
A 40-something without past history presents with wide complex tachycardia and crushing chest pain
See Ken Grauer ' s important and detailed ECG analysis at the bottom.CaseA 40-something with no PMH presented with palpitations, tachycardia, and crushing chest pain.This was the prehospital ECG.Sustained wide complex tachycardia. Is it VT or SVT with Aberrancy?Also: there is no concordant ST segments or clearly excessively discordant ST segments, so superimposed Occlusion MI (OMI) is unlikely.There is a regular wide complex tachycardia, without P-waves, and anLBBB configuration andinferior axis. [LBBB "configuration" is different from LBBB: it means that there is a predominant S-wave in V1 and V2 and...
Source: Dr. Smith's ECG Blog - February 14, 2022 Category: Cardiology Authors: Steve Smith Source Type: blogs
Wide Complex Tachycardia with Huge ST Elevation. What is going on?
This 70-something woman with no significant past history (no previous ECGs or cardiac history) presented by EMS with fairly acute chest pressure and shortness of breath, with nausea and diaphoresis. " Like an elephant sitting on my chest. " She had no history of atrial fibrillation and was not on any anticoagulants.She stated that she had had a similar episode a couple weeks earlier, lasting 24 hours, with rapid heart beat but without chest pain, that spontaneously resolved. She thought she was having a panic attack. Since then she has had " little spurts " of the same thing lasting 1-2 hours.E...
Source: Dr. Smith's ECG Blog - January 12, 2022 Category: Cardiology Authors: Steve Smith Source Type: blogs
Knowledge check in Brugada syndrome : A rapid fire session
A 5-minute session: Answers are my own. Please cross-check.
1. Is Brugada syndrome clinical or ECG diagnosis?
Always clinical. Never get confused on this.
2. Spontaneous type 1 vs Induced Type 1 (from type 2) which carries more risk?
Both are risky since they are close cousins. But, spontaneous type 1 is the dreaded devil.
3. Is Brugada primarily a defect of myocardial depolarization or repolarisation?
Not clear. Often in both. In fact a mismatch between them. (Don’t ask how Na+ Channel defect affects repolarisation !)
4. Is Brugada VT is monomorphic, polymorphic?
Both. What determines m...
Source: Dr.S.Venkatesan MD - January 5, 2022 Category: Cardiology Authors: dr s venkatesan Tags: cardiac electrophysiology cardiology -Therapeutics Cardiology -unresolved questions Cardiology-Arrhythmias early repolarisation syndrome Electro physiology Electrocardiography-ECG ICD and Pacemakers amiodarone for brugada brugada syndrom Source Type: blogs
A woman in her 60s with syncope and vomiting. Does she need a pacemaker?
Written by Pendell Meyers with some edits by Steve SmithA woman in her 60s on chemotherapy presented to the Emergency Department for a syncopal episode just prior to arrival. She was walking to the bathroom when she suddenly felt nauseous and passed out. EMS was called by the patient ' s daughter, and en route to the ED she vomited twice. On arrival to the ED, she adamantly denies chest pain but says she ' s " just still not feeling well. " She had no prior known cardiac disease.Triage at 0755:The rhythm is most either atrial fibrillation with complete heart block and resulting junctional escape, or atrial flutter wi...
Source: Dr. Smith's ECG Blog - November 19, 2021 Category: Cardiology Authors: Pendell Source Type: blogs
