Cardiovascular System (I00-I99).
- Atrioventricular re-entrant tachycardia (AVRT) – belongs to paroxysmal supraventricular tachycardia and results in typical seizure-like episodes with tachycardia (heartbeat too fast: >100 beats per minute), dizziness, and possibly signs of acute heart failure (heart failure)
- Extrasystoles (heart stutter) – heartbeat that occurs outside the physiological heart rhythm.
- Sinus tachycardia – increased heart rate increased 100 beats per minute, originating from the sinus node.
- Ventricular tachycardia – cardiac arrhythmia with too fast heartbeat, originating from the ventricles.
- Atrial flutter – cardiac arrhythmia in which the atria of the heart beat irregularly 240 to 340 times per minute at rest, while the ventricles usually beat more slowly
