What is concordance in VT?
Concordance exists when all the QRS complexes in the chest leads are either predominantly positive or predominantly negative. Concordance can be either positive or negative. The presence of concordance suggests that the tachycardia has a ventricular origin.
What does it mean when your heart is in V-tach?
Ventricular tachycardia (VT or V-tach) is a type of abnormal heart rhythm, or arrhythmia. It occurs when the lower chamber of the heart beats too fast to pump well and the body doesn’t receive enough oxygenated blood.
What is the most common cause of V-tach?
Sometimes it is not known what causes ventricular tachycardia, especially when it occurs in young people. But in most cases ventricular tachycardia is caused by heart disease, such as a previous heart attack, a congenital heart defect, hypertrophic or dilated cardiomyopathy, or myocarditis.
Does V tach have P waves?
Monomorphic ventricular tachycardia (VT, VTach). P-waves are visible but they do not have any relation to the QRS complexes. This situation is referred to as “AV dissociation” and indicates that atrial and ventricular activity and independent.
Can you live with ventricular tachycardia?
Ventricular tachycardia may last for only a few seconds, or it can last for much longer. You may feel dizzy or short of breath, or have chest pain. Sometimes, ventricular tachycardia can cause your heart to stop (sudden cardiac arrest), which is a life-threatening medical emergency.
What electrolyte imbalance causes ventricular tachycardia?
Hypokalemia, hypomagnesemia, and hypocalcemia may predispose patients to either monomorphic VT or torsade de pointes.
How do you read a Vtach on an ECG?
If the QRS complex in V1–V2 resembles a left bundle branch block (i.e negative QRS)
- The initial portion of the QRS complex is smooth in ventricular tachycardia.
- R-wave duration ≥40 ms suggest ventricular tachycardia.
- Duration from start of QRS complex to nadir of S-wave ≥60 ms suggests ventricular tachycardia.