…classification of tachyarrhythmias into narrow complex (NCT) and wide complex tachycardia (WCT) will be emphasized, as this distinction significantly informs both diagnostic reasoning and treatment…

…Twitching of the chest muscles and spikes on the screen mean nothing. Capture is verified only when every pacing spike is followed by a wide…

…and to maximize the likelihood of restoring spontaneous circulation, interventions should be adapted to the current phase. However, current guidelines do not consider this fact…

…The current that is delivered by the pulse generator can be calculated as follows: I = V/R Given that voltage (V) is constant and…

…interfere with the injury currents, and inhibit them from being detected by leads with opposite angles of observation. The electrocardiographic natural course of STE ACS …

…integrates early catheter ablation and sophisticated device therapy [1] [2] . This exhaustive review provides a comprehensive synthesis of the current state of VT management for…

…with life threatening ventricular tachyarrhythmias and atrial fibrillation (AF). It is also effective in preventing the recurrence of a wide variety of supraventricular tachycardias (SVTs…

…Loss of function (LOF) mutations in SCN5A lead to a reduction in the inward sodium current ($I {Na}$) and are identified in 20% to…

…need for a pressure wire altogether. In parallel, large outcome trials have clarified, and in some cases substantially narrowed, the role of revascularization itself in…

…At the time of J 60 and J 80, there is minimal chance that there are any electrical potential differences in the myocardium. Current guidelines…

…will spread through the right ventricle partly or entirely outside of the conduction system which will be slow and therefore cause a wide QRS complex…

…VT) and supraventricular tachycardia (SVT) with wide QRS complex. The algorithm entails 5 criteria, which are tested sequentially (Figure 1). Figure 1. Flowchart of Brugada…

…on how wide the rim of fluid looks. With ultrasound guidance, the point at which the fluid lies most superficially is chosen and the needle…

…early termination of diastolic flow Jet width colour Doppler small,, < 10 mm length, narrow origin variable large, wide origin Ratio pulmonic to aortic flow…

…the ventricles it will spread partly or entirely outside of the conduction system and thus produce a wide QRS complex (QRS duration ≥0.12 s…

…and clinical characteristics. Ventricular tachycardia is a highly nuanced arrhythmia that originates in the ventricles. A wide range of conditions may cause ventricular tachycardia and…

…Wide variability between measurements. Hypertension in pregnancy. Contraindications There are no absolute contraindications. Refrain or adapt in atrial fibrillation with a rapid and irregular ventricular…

…These tachyarrhythmias arise in the atria and are very rarely life threatening. Causes of tachyarrhythmia with wide QRS complexes (QRS duration ≥ 0.12 s): the…

…swabs in wide circles and let it dry for a couple of minutes before the needle is inserted. Sterile gloves, sterile gauze, and a fenestrated…

…and it is asked of a patient who is haemodynamically stable enough for there to be time to ask it. Indications Wide complex tachycardia where…

…Causes of tachycardia (tachyarrhythmia) with wide QRS complexes (QRS duration ≥0,12 s) : ventricular tachycardia is the most common cause and it is potentially life…

…women or five for men on one occasion. Pharmacokinetics and pathophysiology Approximately 95% of ingested ethanol undergoes hepatic metabolism. Alcohol dehydrogenase converts ethanol to acetaldehyde…

…report rates of approximately 5–10%, while fewer than 5% of otherwise normal angiograms demonstrate bridging. The wide range reflects differences in ascertainment and imaging…

…seconds. Case reports have indicated that the risk of high degree AV block and ventricular arrhythmias is greater in patients on digoxin or verapamil, although…

…the ECG in terms of sensitivity and specificity. Nevertheless, to detect hypertrophy/dilatation using the ECG, a wide range of criteria and algorithms have been…

…very good prognosis and may even occur in otherwise healthy individuals. However, if the QRS complexes are wide there is a risk of distal block…

…The QRS complex is wide due to ventricular depolarization proceeding outside the conduction system. Figure 4. Pacing in the right atrium and the right ventricle…

…the most promising improvement. 1 Given the wide use of pacemakers and the trend towards increased use of cardiac devices in general, it is crucial…

…features of LBBB include a QRS duration of ≥0.12 seconds, a deep and broad S wave in leads V1 and V2, and a wide…

…disease A wide range of conditions may cause mitral valve disease, which results in changes in the pressure volume relationships in the ventricle and the…

…and stimulates the ventricles with the same rate. This occurs if ventricular stimulation is set to be triggered by the atrial impulse. Another cause of…

…to construct images with high spatial and temporal resolution. PET offers higher spatiotemporal quality, as compared with SPECT. Quantification of blood flow using PET Quantitative…

…leading to stimulation of beta adrenergic receptors) and parasympathetic withdrawal. Sinus tachycardia secondary to disease and medications : A wide range of diseases and medications may…

…with a frequency of roughly 40 beats per minute. If the escape rhythm has wide QRS complexes and a frequency of 20–40 it is…

…complex is wide simply because the ectopic impulses that cause these rhythms spread partially or entirely outside of the ventricular conduction system, and thus the…

…thrombolysis and PCI wire crossing. Exact times are needed for continued management and quality follow up. STEMI: time targets and choice of reperfusion Primary PCI…

…The pinch is applied to the lower third of the nose, the soft part , and held continuously for at least 10 minutes without letting go…

…with wide bore tubing. Working suction, oxygen and complete equipment for intubation and ventilation must be to hand before the lavage begins. The head of…

…roots of the cauda equina. If in doubt: choose a level lower, never higher. 3. Mark the puncture site, clean in wide circles and apply…

…A wide bore tube (Ch 14–18) of polyvinyl chloride for decompression and evacuation; a fine, soft tube (Ch 8–12) of polyurethane or silicone…

…early termination of diastolic flow Jet width colour Doppler small,, < 10 mm length, narrow origin variable large, wide origin Ratio pulmonic to aortic flow…

…clinically oriented and just great. A must if your into emergency medicine. Broome docs Dr Casey Parker's site covers a wide range of topics…

…point and the ST segment The ST segment must always be studied carefully since its appearance may be changed in a wide range of serious…

…wave and wide QRS is indicative of 'Ventricular pre excitation', and QRS duration ≥140 ms is considered 'Profound nonspecific intra ventricular conduction delay', both of…

…Figure 1. The electrical axis of the heart (heart axis). As evident from the figure, the normal heart axis is between –30° and 90°. If…

…with wide QRS complexes, then ventricular tachycardia is the most likely cause. This article is part of the comprehensive chapter: How to read and recognize…

…in the next chapters, fundamental aspects of rhythm will also be covered in this discussion (refer to Normal Rhythm and Arrhythmias). Also note that this…

…of type 1 Brugada syndrome (note the large J waves in V2–V3). Figure 2. Brugada syndrome. Note the gigantic J wave in V2 and…

…Causes of tachycardia (tachyarrhythmia) with wide QRS complexes (QRS duration ≥0,12 s) : ventricular tachycardia is the most common cause and it is potentially life…

…other causes of wide QRS complex must always be considered. For example, Wolff Parkinson White syndrome (WPW), pacemaker stimulated beats, electrolyte imbalance and medications may…

…of pericarditis is infections, in particular viral infections. This explains why pericarditis may affect individuals of all ages. However, a wide range of local and…

…changes. This is due to the fact that pre excitation leads to abnormal depolarization of the ventricles and this leads to abnormal repolarization as well…

…atrioventricular node before it has repolarized completely. The earlier the impulse reaches the atrioventricular node (and bundle of His), the longer the PR interval (because…

…the impulse and spread it. If the impulse is discharged distal to the bifurcation of the bundle of His, the QRS complexes will be wide …

…wave abnormalities are common and occur in a wide range of conditions. Unfortunately, many clinicians tend to misinterpret the T wave and some find it…

…lines to create a 90° wide and 15 cm deep image requires approximately 40 milliseconds (ms). Increasing the number of ultrasound lines or image depth…