Cardiac cycle
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Transcript of Cardiac cycle
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Postgraduate Education BS Physical Therapy, Silliman University, 1996 BS Zoology, MSU-Iligan Institute of Technology 1999 Doctor of Medicine, Mindanao State University-College of Medicine Post-graduate Internship University of the Philippines, Philippine General Hospital 2003-2004 Internal Medicine Residency University of the Philippines, Philippine General Hospital 2004-2007 Fellowship in Cardiology University of the Philippines, Philippine General Hospital 2008-2011 Affiliations Fellow, Philippine College of Physcians Fellow, Philippine Heart Association Fellow, Philippine College of Cardiology
JILL IRENE Z. CAPISTRANO MD, FPCP, FPCC
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The ECG complex
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ECG Phonogram
Pre
ssu
re (
mm
Hg
)
RA
LA
LV
RV
Ventricular filling
Atrial Contraction
Ventricular filling (mid to late diastole)
120
80
40
0
Atrial pressure > Ventricular pressure AV valves open Atrium contract Blood flow from atrium to ventricle Atrial pressure < Ventricle pressure
AV valves close
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ECG Phonogram
Pre
ssu
re (
mm
Hg
)
Isovolumic contraction
phase Ventricular ejection
phase
Ventricular systole (atria in diastole)
120
80
40
0
AV valves closed
Ventricles contract
Ventricular Pressure >
Ao/Pa Pressure
Ao/Pa valves open
LV/RV eject blood into Ao/Pa
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ECG Phonogram
Pre
ssu
re (
mm
Hg
)
Isovolumic relaxation
phase Ventricular
filling
Early Diastole
120
80
40
0
Ao/Pa pressure > ventricular pressure
Ao/Pa valves close
Ventricles relax
Ventricular P <Atrial P
AV valves open
Atrium empty blood
into ventricle
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Ven
tric
ula
r V
olu
me
(ml)
130
100
70
Atrioventricular valve
Aortic & Pulmonary
valve
1
2a 2b 3 1
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CLINICAL CORRELATES
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