CPPT-Essentials

Question 1

Components of the Cardiac Conduction System

6:

Answer 1

1. SA node (primary pacemaker)->
2. Internodal tracts->
3. AV node (backup pacemaker)->
4. Bundle of HIS->
5. R &L bundle branches->
6. Purkinje fibers

Question 2

Sympathetic nerves and heart response

STIMULATE the heart

Answer 2

• Stim heart to beat faster (chronotropic) and with greater force (inotropic)

Iono think STRENGTH
Chrono think RATE

Question 3

Parasympathetic nerves and heart response

SLOW everything

Answer 3

• SLOW the heart rate (chronotropic) primarily thru influence on SA Node

Question 4

Valsalva Maneuver does WHAT?

Who should AVOID

Answer 4

• INCd intrathoracic pressure, INCd CVP
• DECd venous return

AVOIDED –esp pts w/ heart, blood vessel, or lung disease

Question 5

Ventricular Systole vs Diastole

Answer 5

Systole== Contraction of vents
Diastole== Relaxation phase

Question 6

Cardiac Output

What is it, value, and during exercise

Answer 6

• HR * SV
• Blood pumped by heart/minute
• 5.0-5.5L/min in resting adults

CAN INC 5X DURING EXERCISE!!!