PRESSURE CHANGES IN ATRIA AND VENTRICLE VENTRICULAR PRESSURE

VENTRICULAR PRESSURE CHANGES • • • DURING RAPID EJECTION PHASE PRESSURE IN LEFT VENTRICLE

AORTIC PRESSURE CHANGES • IT IS AROUND 120 MMHG BEGINNING OF • RAPID EJECTION

ATRIAL PRESSURE CHANGES • ATRIAL PRESSURE CHANGES=OMMHGDURING RELAXATION • MEANS DIASTOLE • DURING SYSTOLE

VOLUME CHANGES IN LEFT VENTRICLE DURING SYSTOLE BLOOD IS PUMPED OUT OF THE LEFT

END DIASTOLIC VOLUME AND STROKE VOLUME • • • THE MAXIMUM AMOUNT OF BLOOD

HEART SOUNDS • DEFN ; HEART SOUNDS ARE PRODUCED • DUE TO VIBRATION OF

FIRST HEART SOUND • • CAUSE-VIBRATION OF AVVALVES CLOSURE OCCURENCE=VENTRICULAR SYSTOLE BEGINS NATURE=LUBB SOUND

SECOND HEART SOUND • • • SUDDEN CLOSURE OF SEMILUNAR VALVES 0. 10 SEC

THIRD HEART SOUND • • • CAUSE-VIBRATION OF AV VALVES DUE TO TURBULENT FLOW

FOURTH HEART SOUNDS • • • CAUSE-VIBRATION OF AV VALVES DUE TO TURBULENT FLOW

APPLIED • • MURMURS THEY ARE ABNORMAL SOUNDS PRODUCED DUE TO TURBULENCE IN FLOW

Slides: 15

Download presentation

PRESSURE CHANGES IN ATRIA AND VENTRICLE

VENTRICULAR PRESSURE CHANGES • • • DURING RAPID EJECTION PHASE PRESSURE IN LEFT VENTRICLE IS 120 -140 mm Hg RIGHT VENTRICUAR PRESSURE= 25 -30 mm Hg During DIASTOLE = LEFT VENTRICULAR PRESSUR=15 -20 MMHG RIGHT VENTRICULAR PRESSURE=0 mm. Hg

AORTIC PRESSURE CHANGES • IT IS AROUND 120 MMHG BEGINNING OF • RAPID EJECTION PHASE OF VENTRICLE • IT IS ABOUT 80 mm. Hg at the beginning of VENTRICULAR DIASTOLE

ATRIAL PRESSURE CHANGES • ATRIAL PRESSURE CHANGES=OMMHGDURING RELAXATION • MEANS DIASTOLE • DURING SYSTOLE CONTRACTION=1520 MMHG

VOLUME CHA NGES

VOLUME CHANGES IN LEFT VENTRICLE DURING SYSTOLE BLOOD IS PUMPED OUT OF THE LEFT VENTRICLE INTO THE AORTA THE AMOUNT OF BLOOD REMAINING INSIDE THE VENTRICLE AT THE END OF VENTRICULAR SYSTOLE IS KNOWN AS END SYSTOLIC VOLUME • THIS IS ABOUT=50 ML • • •

END DIASTOLIC VOLUME AND STROKE VOLUME • • • THE MAXIMUM AMOUNT OF BLOOD COLLECTED INSIDE THE LEFT VENTRICLE AT THE END OF DIASTOLE IS CALLED AS END DIASTOLIC VOLUME THE NORMAL VALUE =120 ML, STROKE VOLUME=70 ML

HEART SOUNDS • DEFN ; HEART SOUNDS ARE PRODUCED • DUE TO VIBRATION OF LEAFLETS OF VALVES • SUDDEN CLOSURE OF VALVES • THERE ARE FOUR HEART SOUND THEY ARE HEAR SOUND I HEART SOUND III FOURTH HEART SOUND

FIRST HEART SOUND • • CAUSE-VIBRATION OF AVVALVES CLOSURE OCCURENCE=VENTRICULAR SYSTOLE BEGINS NATURE=LUBB SOUND DURATION 0. 1 -0. 14 SEC LONG AREA= MITRAL AREA LEFT 5 TH IC SPACE ECG-RWAVE FREQUENCY=25 -45 CYCLES/SEC

SECOND HEART SOUND • • • SUDDEN CLOSURE OF SEMILUNAR VALVES 0. 10 SEC SHORT SHARP PITCH HEARD AS DUP SOUND AORTIC AND PULMONARUY AREA RELATION –TWAVE ECG

THIRD HEART SOUND • • • CAUSE-VIBRATION OF AV VALVES DUE TO TURBULENT FLOW OCCURENCE-FIRST RAPID FILLING PHASE OF VENTRICLES SOMETIMES HEARD IN NORMAL CHILDREN AND YOUNG ADULTS

FOURTH HEART SOUNDS • • • CAUSE-VIBRATION OF AV VALVES DUE TO TURBULENT FLOW OF BLOOD DUE TO LAST RAPID FILLING PHASE THIS IS KNOWN AS ATRIAL SOUND AS IT OCCUR IN ATRIAL SYSTOLE

APPLIED • • MURMURS THEY ARE ABNORMAL SOUNDS PRODUCED DUE TO TURBULENCE IN FLOW OF BLOOD EX ARE MITRAL STENOSIS AOTRIC REGURGITATION HEART SOUNDS DETERMINE RYTHMICITY OF THE HEART