Let us continue Know about PR interval :
Prolonged PR Interval :
💜First Degree Heart Block :
PR interval > 200ms (five small squares)
Causes of First Degree Heart Block
❤️Increased vagal tone
❤️Athletic training
❤️Inferior MI
❤️Mitral valve surgery
❤️Myocarditis (e.g. Lyme disease)
❤️Electrolyte disturbances (e.g. Hyperkalaemia)
❤️AV nodal blocking drugs (beta-blockers, calcium channel blockers, digoxin, amiodarone)
❤️May be a normal variant

🎁. " FOUR RULE in ECG "
🔢: FOUR Initial Features *🔢*: History *🔢*: Rate *🔢*: Rhythm *🔢*: Axis*🔢*: FOUR Waves *🔢*: P wave *🔢*: QRS wave *🔢*: T wave *🔢*: U wave🔢: FOUR Intervals *🔢*: PR interval : *🔢*: QRS complex : "interval " wide or narrow *🔢 *: ST segment " interval " *🔢*: QT interval*🔢*: What is the diagnosis?

🧑🏼‍⚕ I always struggle with ECG’s,” the intern stammers “I just don’t know where to start. I think it is abnormal, ‘cos it looks a bit of a mess.
*👨🏻‍⚕ There's RULE OF FOUR IN ECG
To make you remember rapidly How to interpretate of ECG*

777 members in this channel.
Special number

In this ECG problem is abnormal placement of Leads

Thanks for everyone write his Answer in comments

No one Know what is this ?

If leaeds falsely placed in abnormal position. As LA/RA reversal Do you think it's important to know How to Know ?