Cardiac cycle

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Cardiac cycle

  1. 1. JILL IRENE Z. CAPISTRANO MD, FPCP, FPCCPostgraduate EducationBS Physical Therapy, Silliman University, 1996BS Zoology, MSU-Iligan Institute of Technology 1999Doctor of Medicine, Mindanao State University-College of MedicinePost-graduate InternshipUniversity of the Philippines, Philippine General Hospital 2003-2004Internal Medicine ResidencyUniversity of the Philippines, Philippine General Hospital 2004-2007Fellowship in CardiologyUniversity of the Philippines, Philippine General Hospital 2008-2011AffiliationsFellow, Philippine College of PhysciansFellow, Philippine Heart AssociationFellow, Philippine College of Cardiology
  2. 2.  The ECG complex
  3. 3. Ventricular ECGfilling Phonogram 120 Atrial pressure > Ventricular pressure(mid to late diastole) Pressure (mmHg) AV valves open Atrium contract 80 Blood flow from atrium to ventricle 40 Atrial pressure < Ventricle pressure AV valves close RA 0 LA LV Ventricular filling RV Atrial Contraction
  4. 4. Ventricular ECGsystole Phonogram 120 AV valves closed(atria in diastole) Ventricles contract Pressure (mmHg) 80 Ventricular Pressure > Ao/Pa Pressure 40 Ao/Pa valves open LV/RV eject blood into 0 Ao/Pa Isovolumic contraction phase Ventricular ejection phase
  5. 5. Early ECGDiastole Phonogram Ao/Pa pressure > 120 ventricular pressure Ao/Pa valves close Pressure (mmHg) 80 Ventricles relax Ventricular P <Atrial P 40 AV valves open Atrium empty blood 0 into ventricle Isovolumic relaxation phase Ventricular filling
  6. 6. Ventricular Volume (ml) 130 100 70 Atrioventricular valve Aortic & Pulmonary valve1 2a 2b 3 1
  7. 7. CLINICAL CORRELATES

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