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CARDIAC CYCLE

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by

Nitasha Afzal

on 9 July 2014

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Transcript of CARDIAC CYCLE

Thank You!
ISOVOLUMIC CONTRACTION PHASE
EJECTION
PHASE
VENTRICULAR SYSTOLE
ROLL NO.
20
40
52
116
168
307

VENTRICULAR DIASTOLE
VOLUMES
Definition:

The events taking place from the start of a heart beat to the start of the next.



Duration: 0.8 seconds



2 Phases:
i)Ventricular Systole
ii) Ventricular Diastole
EVENTS OF THE CARDIAC CYCLE
VOLUME OF BLOOD
PRESSURE
ECG
HEART SOUNDS
___________________________________
___________________________________
___________________________________
___________________________________
___________________________________
PRESSURE
NO
VOLUME
ECG: QRS COMPLEX
HEART SOUND = S1
BLOOD PUMPED OUT FROM VENTRICLES


VOLUME
2 PHASES:
i) RAPID EJECTION PHASE
ii) SLOW EJECTION PHASE
PRESSURE
SEMILUNAR VALVES OPEN
ECG: T-wave
ISOVOLUMIC
RELAXATION
PHASE
RAPID
FILLING
PHASE
SLOW
FILLING
PHASE
ATRIAL
SYSTOLE
PRESSURE
NO
VOLUME
NO
ECG
HEART SOUND = S2
PRESSURE
AV VALVES OPEN
VOLUME
NO
ECG
HEART SOUND = S3
a.k.a. DIASTASIS
PRESSURE
VOLUME
NO
ECG
PRESSURE
VOLUME
ECG: P-wave
100% FILLED VENTRICLES
ESV
40ml - 50ml
EDV
110ml - 120 ml
SV
SV = EDV - ESV
70ml
CARDIAC CYCLE
Full transcript