Cardiac cycle
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Transcript of Cardiac cycle
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
The ECG complex
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
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
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
Ven
tric
ula
r V
olu
me
(ml)
130
100
70
Atrioventricular valve
Aortic & Pulmonary
valve
1
2a 2b 3 1
CLINICAL CORRELATES