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Condition: Arrhythmia
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Total 513 results found since Jan 2013.
How Could Digital Technology Make An Impact On Primary Care?
I truly hope that very soon I do not have to make an appointment at the GP when I suspect signs of a disease, but my GP will send me a message that she spotted something irregular in my latest test results and my digital health data, so I’d better visit. Let me show you in detail how primary care should be carried out in the future!
Digital health should become an organic part of primary care in the future
I live a fairly healthy life. I use data to improve my lifestyle and to make better decisions by optimising my sleep pattern, my physical, my cognitive or my emotional abilities; and I had several genetic tests....
Source: The Medical Futurist - September 21, 2023 Category: Information Technology Authors: berci.mesko Tags: Digital Health Research Healthcare Innovation technology wearables GP primary care general practitioner Source Type: blogs
A man in his 70s with weakness and syncope
DiscussionBrugada Type 1 ECG changes are associated with sudden cardiac death (SCD) and the occurrence of ventricular dysrhythmias. Patients that develop a Type 1 pattern without any precipitating or provoking factors have a risk of SCD of 0.5-0.8% per year. In patients that only have this pattern induced by a sodium channel blocking agent have a lower rate of SCD (0 - 0.35% per year)[1]. Drugs that have been associated with Brugada ECG patterns include tricyclic antidepressants, anesthetics, cocaine, methadone, antihistamines, electrolyte derangements, and even tramadol. [2]. Our patient had a Brugada Type ...
Source: Dr. Smith's ECG Blog - July 22, 2023 Category: Cardiology Authors: Pendell Source Type: blogs
Young Man with Very Fast Regular Wide Complex Tachycardia
EMS was dispatched for a 30-something male who feels his heart is racing. Sudden onset.The patient had no previous medical history.Vitals were normal except for a heart rate of 226.A prehospital 12-lead was recorded:There is a regular wide complex tachycardia. The computer diagnosed this as Ventricular Tachycardia.Is it definitely VT??The patient was given 6mg, then 12 mg, of adenosine, without a change in the rhythm.He arrived in the ED and had an immediate bedside cardiac ultrasound while this ECG was being recorded.The bedside ultrasound (video not available) reportedly showed only a slightly reduced LV func...
Source: Dr. Smith's ECG Blog - June 28, 2023 Category: Cardiology Authors: Steve Smith Source Type: blogs
High-Frequency Low-Tidal-Volume Ventilation During Atrial Fibrillation Ablation Improves Long Term Outcome
Catheter ablation for pulmonary vein isolation is an important modality of treatment for paroxysmal atrial fibrillation. It is also useful for persistent atrial fibrillation, though a little less. Importance of maintaining a stable contact force of the catheter during radiofrequency ablation cannot overstressed as it contributes to lesion size and achieving transmural lesion. Both these are important in reducing re-connection of pulmonary veins, an important cause for recurrent atrial fibrillation after catheter ablation. General anaesthesia during procedure reduces the rate of pulmonary vein reconnection and hence recurr...
Source: Cardiophile MD - June 24, 2023 Category: Cardiology Authors: Johnson Francis Tags: General Cardiology 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 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
Causes of heart attack and cardiac arrest in teenagers
A heart attack occurs when blood flow to a part of the heart muscle stops. Heart attacks in teenagers can be caused by rare genetic diseases, such as familial homozygous hypercholesterolemia, which increases blood cholesterol levels, and some rare diseases that affect the blood vessels of the heart, such as Kawasaki disease.
Cardiac arrest means the heart stops working completely. A heart attack can lead to cardiac arrest. Inherited diseases like Congenital long QT syndrome and Brugada syndrome that cause cardiac arrhythmias and can also cause cardiac arrest in adolescents.
Source: Cardiophile MD - June 1, 2023 Category: Cardiology Authors: Johnson Francis Tags: General Cardiology Source Type: blogs
Clinical Examination of Cardiovascular System For Medical Students
Discussion on blood pressure is not included here as a separate topic is dedicated to it.
Though the most commonly examined pulse is the radial, to check some of the characteristics, a more proximal pulse like the brachial or carotid needs to be examined. Following parameters of the pulse are routinely documented: 1. The rate: Normal rate in adult is 60-100 per minute. It is higher in children. Younger the child, higher the pulse rate.
Rhythm: Regular and irregular rhythms are possible. Mild variation with respiration is called respiratory sinus arrhythmia, with higher rate in inspiration. Respiratory sinus arrhythmia may...
Source: Cardiophile MD - May 30, 2023 Category: Cardiology Authors: Johnson Francis Tags: General Cardiology Source Type: blogs
What is Mitochondrial Cardiomyopathy?
Mitochondria have two genomes – mitochondrial and nuclear. Mitochondrial disease could be due to mutations of nuclear or mitochondrial DNA. Mitochondrial DNA is inherited maternally while nuclear DNA has Mendelian inheritance, which could be dominant or recessive [1]. It may be noted in about one in 5000 live births. Cardiac involvement in mitochondrial disease seldom occurs in isolation and is often part of multiorgan dysfunction [2]. Mitochondria being part of the cellular respiratory chain, tissues with high energy requirements like heart, muscle, kidneys and endocrine system are often involved in mitochondrial d...
Source: Cardiophile MD - May 9, 2023 Category: Cardiology Authors: Johnson Francis Tags: General Cardiology Source Type: blogs
Cuffless Blood Pressure Monitoring – Not for the Faint-of-Heart (Pun Intended)
This article will summarize these challenges and also provide optimism for the refreshingly near future. Namely, while the progress towards FDA-cleared cuffless BP monitoring may feel protracted, significant technological advances, regulatory modernization, and clinical use case validation are rapidly advancing and aligning.
Key Challenges Confronting OTC Cuffless Blood Pressure Monitoring
Scientific Risks
At the most fundamental level, the jury’s still out on whether sufficiently accurate noninvasive, cuffless, calibration-free blood pressure monitoring is physically realizable at all. Namely, “Do the laws of nature...
Source: EMR and HIPAA - May 3, 2023 Category: Information Technology Authors: Guest Author Tags: Clinical Communication and Patient Experience Health IT Company Healthcare IT Hospital - Health System Telemedicine and Remote Monitoring AliveCor Blood Pressure Blood Pressure Cuffs Blood Pressure Monitoring BP Calibration-Free Bloo Source Type: blogs
Graphene Patch Affixes to Heart for Pacemaking
Researchers at Northwestern University and the University of Texas at Austin have developed a thin and flexible graphene “tattoo” that can be affixed to the outside of the heart, and which can monitor heart rhythms and apply corrective electrical...
Source: Medgadget - May 1, 2023 Category: Medical Devices Authors: Conn Hastings Tags: Cardiac Surgery Cardiology Materials pacemaker UTAustin Source Type: blogs
Bainbridge Reflex
Bainbridge Reflex was described over a century back, in 1918 as the influence of venous filling on the heart rate [1]. It was noted as an increase in heart rate in response to a rise in central venous pressure. Mechanoreceptors for the Bainbridge reflex are located at the junction of the right atrium and the caval veins and at the junction of pulmonary veins and the left atrium [2]. It is also known as Bainbridge effect and sometimes called the atrial reflex. Efferent arm of the reflex could involve both parasympathetic withdrawal and sympathetic enhancement.
Axial stretch has been shown to increase spontaneous pacemaker ...
Source: Cardiophile MD - April 23, 2023 Category: Cardiology Authors: Johnson Francis Tags: General Cardiology Source Type: blogs
Localisation of Ventricular Tachycardia by Surface ECG
Surface ECG can be used to identify the site of origin of ventricular tachycardia. QRS morphologic patterns and vectors are helpful in discerning the activation pattern of the myocardium. Chest wall deformity as well as metabolic and drug effects can cause limitations in analysis sometimes [1]. Identification of site of origin of VT is useful while planning catheter ablation. It is also useful in correlating with the clinical situation as in post myocardial infarction scar related VT. Another instance is for correlation with findings on imaging modalities like echocardiography and cardiac magnetic resonance imaging [2].
F...
Source: Cardiophile MD - April 23, 2023 Category: Cardiology Authors: Johnson Francis Tags: General Cardiology Source Type: blogs
Myocardial Ischemia-Reperfusion Injury
Myocardial Ischemia-Reperfusion Injury is a paradoxical exacerbation of cellular dysfunction and cell death occurring after restoration of blood supply in previously ischemic tissues. Reperfusion of the myocardium after coronary occlusion in acute myocardial infarction can cause reperfusion arrhythmias like accelerated idioventricular rhythm. Myocardial ischemia-reperfusion injury can also occur after cardiac surgery and circulatory arrest [1]. Though reperfusion is essential for salvage of the myocardium it can sometimes cause paradoxical damage. Reperfusion injury can also affect distant organs occasionally leadin...
Source: Cardiophile MD - April 20, 2023 Category: Cardiology Authors: Johnson Francis Tags: General Cardiology Source Type: blogs
RBBB and LAFB. Is it trifascicular block? The complexities of Wenckebach, with Ken Grauer analysis.
This patient presented with complications of his dialysis fistula.Medical history:History of Ischemic Heart DiseaseHistory of Congestive Heart FailureDiabetes Mellitus requiring treatment with insulinPre-operative serum creatinine>2 mg/dLHe had this ECG recorded:What do you think?There is AV 2nd degree AV Block (Mobitz I, Wenckebach) with RBBB and LAFBThe physicians recognized the RBBB and LAFB, but not the Wenckebach. They compared to a previous ECG and thought they were identical. Here is the previous ECG from 2 months prior for pre-op for cataract surgeryThis appears to be atrial fibrillation with RBB...
Source: Dr. Smith's ECG Blog - April 6, 2023 Category: Cardiology Authors: Steve Smith Source Type: blogs
