11. Severe and sustained ventricular tachycardia can cause dizziness, fainting and death. 12. Tachycardias can be further classified as either regular or irregular.13. Spiral waves are believed to underlie phenomena such as tachycardia and fibrillation. 14. The addiction, tachycardia and hypertension, making prolonged unsupervised use dangerous. 15. These terms are used in the description of ventricular tachycardia . 16. Narrow-complex tachycardia and ruled in for an acute myocardial infarction. 17. Those large TWAs were associated with increased susceptibility to lethal ventricular tachycardias . 18. Clinical fat embolism syndrome presents with tachycardia , tachypnea, neurological symptoms. 19. The code title ( or rubric ) is Supraventricular tachycardia . 20. Overdose usually manifests with convulsions, hallucinations, tachycardia and hyperdynamic circulation.