1. CO - SYSTOLIC PRESSURE
   1. STROKE VOLUME
      1. PRELOAD - ENDDIASTOLIC VOLUME
         1. VENOS RETURN
            1. FILLING TIME - DIASTOLIC INTERVAL
            2. FILLING PRESSURE
            3. VEINS TONE
            4. BLOOD VOLUME
      2. AFTERLOAD
         1. TPR
      3. CONTRACTILITY
   2. HR
2. TPR - DIASTOLIC PRESSURE