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8 paź 2024 · Ventricular fibrillation (rhythm strip): Chaotic irregular deflections without identifiable P-QRS-T waves. Clinical significance of VF. Ventricular fibrillation (VF) is the most important shockable cardiac arrest rhythm. The ventricles suddenly attempt to contract at rates of up to 500 bpm.
- Long QT Syndrome
Long QT Syndrome (LQTS) produces prolonged ventricular...
- Early Repolarization Misnomer
Burns E. Ventricular Fibrillation (VF). ECG Library;...
- Aortic Dissection
References and Links. LITFL. CT scan 006 – Aortic dissection...
- Tension Pneumothorax
Ever since I was a junior medical officer and I was faced...
- Accelerated Idioventricular Rhythm
These ventricular impulses depolarise the AV node, leaving...
- Commotio Cordis
Ventricular fibrillation and sudden death triggered by a...
- Pulmonary Embolism
Judging by the flurry of comments on two recent EMCrit posts...
- Sgarbossa Criteria
Left bundle branch block – LITFL; References. Sgarbossa EB,...
- Long QT Syndrome
3 lis 2020 · Ventricular Fibrillation (VF) requires a initiating stimulus in a susceptible myocardium.
Ventricular fibrillation and (pulseless) ventricular tachycardia mandate immediate CPR, advanced life support and correction of underlying causes.
3 cze 2024 · This is defined as "ventricular tachycardia with varying QRS amplitude, axis and duration." In short, it differs from regular VT by having a different QRS morphology for every beat. It is important to note that polymorphic VT is not torsades de pointes, but torsades des pointes is one form of polymorphic VT, specifically associated with QT ...
Atrial fibrillation is the most common cardiac arrhythmia and is caused by rapidly firing potentials in the atrial myocardium. These aberrant depolarizations are often the result of myocardial remodeling and frequently originate within the muscular sleeves that extend into the pulmonary veins from the atria.
28 paź 2021 · The heart is heterogeneous, and the PSs may be more stable in one region than those in another region, or the fibrillation is a mixture of foci and reentry. Whether a single rate constant for birth and one for death to describe the PS dynamics in the entire ventricles or atria are proper needs to be investigated.
Ventricular fibrillation (VF) is due to multiple wavelet reentrant electrical activity and is manifested on electrocardiogram (ECG) by ultrarapid baseline undulations that are irregular in timing and morphology. VF is the presenting rhythm for about 70% of patients in cardiac arrest and is thus the terminal event in many disorders.
