…Figure 1. The sinoatrial (SA) node and atrioventricular (AV) node are located in the atria and are not part of the ventricular conduction system. The…

…disorders. Because the rate (60–100 beats per minute) is on a par with the rate in sinus rhythm and there is atrioventricular conduction, these…

…the hemodynamic significance of a coronary lesion, with anatomic and functional assessment discordant in a substantial minority of intermediate lesions. Over the past three decades…

…finding). Figure 1. Discordance and concordance between QRS complex and ST T segment. The transition from ST segment to T wave should be smooth. The…

…As a result, apoB and cholesterol measures may be discordant. A patient may have: Relatively high apoB despite normal or low LDL C or non…

…resting flow and microvascular vasodilator capacity. The two measures may therefore be discordant. A reduced FFR with preserved CFR suggests a predominantly focal epicardial lesion…

Conduction defects ECG Lathundar Left Bundle Branch Block (LBBB) Electrocardiographic Criteria and Characteristics Left bundle branch block is characterized by a significant reorganization of the…

…or R V6 ≥30 mm 3 Discordant ST T change in a patient not on digoxin treatment 3 Discordant ST T change in a patient…

…However, most clinicians who encounter patients with pacemakers only have access to conventional surface ECGs. Being able to assess pacemaker function and perform troubleshooting should…

…discharged in the ventricles it will spread partly or entirely outside of the conduction system and thus produce a wide QRS complex (QRS duration ≥0…

…branch block (RBBB). Secondary ST T changes are common in V1–V3. The ST T segment is usually discordant to the QRS complex. V5, V6…

…C, non HDL C and apoB are usually correlated, but discordance may occur when particles differ in cholesterol content or size. In such cases, cardiovascular…

…versa ( Figure 17 ). Otherwise there is discordance (opposite directions of QRS and T) which might be due to pathology. A negative T wave is also…

…90 mm Hg). The discordance between optimal blood pressure and the definition of hypertension is explained by a cost benefit equation. The benefits of interventions…