The Cardiac Cycle Made Ridiculously Simple 🫀

The Cardiac Cycle 🫀

The cardiac cycle includes: P Wave, QRS Complex, and T Wave.

🟣P WAVE: left and right atria depolarizing (contracting).

❌P WAVE “ATRIAL DISORDERS”: Atrial Fibrillation (AFIB)
Atrial Flutter (AFLUTTER)
Premature Atrial Contractions (PAC)
Atrial Tachycardia

🔵QRS COMPLEX: left and right ventricles are depolarizing (contracting) while atrias are relaxing.

❌QRS “VENTRICULAR DISORDERS”
Ventricular fibrillation (VFIB)
Ventricular tachycardia (VTACH)
Premature Ventricular Beats (PVCs)

🟠T WAVE: ventricles start to repolarize (relax) and everything is getting ready for another cycle.

❌T WAVE DISORDERS: these are usually due to injury or illness. Ex: myocardial infarction or ⬆️K+.

⭐️Credit: Disorder information was supplied from Harvard Medical School. @harvardmed

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[ChristopherInTexas]

Correction. Atrial repolarization is hidden in the QRS, the T wave is ventricular repolarization.

[HarshHYP]

A slight correction here :
During P wave, Atria go into depolarisation phase, and during the P-Q interval, the atria undergo systole.
Similarly, QRS wave represents the beginning of depolarisation in Ventricles, and Q-T interval shows ventricular systole. The beginning of T wave shows repolarisation of ventricles, and by the end of T wave, ventricles undergo diastole. Please do not confuse the depolarisation with systole or repolarisation with diastole, both are different terms altogether.

[jagruti]

This is exactly how I was taught in my books in class 11th. I'm from India 😂🇮🇳

[Teacher.onlive]

You really helped me scoring in quiz and term exam, watching again for my finals
Thanks a lot ❤

[strawverymilktae]

It’s easier to understand with the graphical representation of the ecg and the square box of the heart because if you’re just looking at the picture of a heart in gen it gets confusing with everything involved.

The box method makes it simple with the rep of the ecg which is very important in the electrical and mechanical conduction of the heart

[jaymorgan.]

Nice! This was so confusing! Other videos are terrible at explaining! Lol 😂

[jesnajaison]

Thank you so much, it's very easy method

[ayanzakwansyed]

Literally the same thing is written in the national council of educational research training (NCERT) book of Class 11th Biology in India 🇮🇳

[farjadchaudhry]

med student here, thank you so much for this 🎉🎉🎉

[Karazorel.Ms.PG.]

it is before clinics in Anatomy &Physiology class book under the heart/ cardiovascular system

[-devil-girl-]

Thank you so much mam I don't understand this topic of cardiac cycle thanks for you😊

[nabila-wtwi]

where did u find that pic of cardiac cycle phases? is it from WHO?

[patelsneh]

Its easy🤷🏻‍♂️i learnt in 11th standard 😅

[qir]

The Indian Medical Education seems way beyond most or atleast some advanced countries in curriculums and syllabus atleast. We had this in out Med biology in 12th Grade Cet exams