Source:

Steve Smith, 2025: A 30-something agitated male with a regular narrow complex tachycardia that will not terminate with adenosine Dr Smith's ECG Blog [ECG]

• Narrow QRS
• Sinus Tachycardia
• Atrioventricular Node Re-entrant Tachycardia
• Hidden P Wave
• Supraventricular Tachycardia
• Agitation
• Amphetamines
• Cocaine