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Tricuspid valve sounds typically heard in right sternal margin of 5th intercostal space PowerPoint Presentation
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Tricuspid valve sounds typically heard in right sternal margin of 5th intercostal space - PowerPoint PPT Presentation


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Aortic valve sounds heard in 2nd intercostal space at right sternal margin. Pulmonary valve sounds heard in 2nd intercostal space at left sternal margin. Mitral valve sounds heard over heart apex (in 5th intercostal space) in line with middle of clavicle.

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Presentation Transcript
slide2

Aortic valvesounds heard

in 2nd intercostal space at

right sternal margin

Pulmonary valve

sounds heard in 2nd

intercostal space at left

sternal margin

Mitral valvesounds

heard over heart apex

(in 5th intercostal space)

in line with middle of

clavicle

Tricuspid valvesounds typically

heard in right sternal margin of

5th intercostal space

slide4

Thesinoatrial (SA)

node(pacemaker)

1

The impulses

pause (0.1 s) at the

atrioventricular

(AV) node.

2

ThePurkinje fibers

Theatrioventricular

(AV) bundle

3

Thebundle branches

4

ThePurkinje fibers

5

Anatomy of the intrinsic conduction system showing the

sequence of electrical excitation

slide5

QRS complex

Sinoatrial

node

Atrioventricular

node

S-T

Segment

P-Q

Interval

Q-T

Interval

slide6

QRS complex

Sinoatrial

node

Ventricular

depolarization

Ventricular

repolarization

Atrial

depolarization

Atrioventricular

node

S-T

Segment

P-Q

Interval

Q-T

Interval

slide7

Left heart

“Lup” =

“Dup” =

Electrocardiogram

Heart sounds

Pressure (mm Hg)

EDV =

ESV =

SV =

Ventricular

volume (ml)

Atrial

_________

Atrioventricular valves

Open

Closed

Open

Aortic and pulmonary valves

Closed

Open

Closed

Ventricular

_________

Ventricular

_________

slide8

Left heart

QRS

“Lup” = closing of L AV valve or Mitral valve

(1st heart sound)

“Dup” = closing of Aortic valve

(2nd heart sound)

P

T

P

Electrocardiogram

1st

2nd

Heart sounds

Dicrotic notch

Aorta

Pressure (mm Hg)

Left ventricle

Atrial systole

Left atrium

EDV = End Diastolic Volume

ESV = End Systolic Volume

SV = Stroke Volume

EDV

Ventricular

volume (ml)

SV

Atrial

SYSTOLE

ESV

Atrioventricular valves

Open

Closed

Open

Aortic and pulmonary valves

Closed

Open

Closed

Ventricular

SYSTOLE

Ventricular

DIASTOLE