Heart Anatomy
Machine Settings
Placement
Leads
Misc.
100

How big is the human heart?

Roughly the size of a fist.

100

What does Chart Speed do?

Controls how fast the machine prints.

100

What happens to limb lead placement for a stress test?

They get moved to the trunk of the body, arms- clavicular area, legs- lower abdomen

100

Which limb lead is the ground lead?

Right leg

100

 What is one small block equal to in EKG graph paper and how many small blocks are in one large block going horizontally?

.04 seconds, 5 

200

List the 4 chambers of the heart.

Rt Atrium, Lt Atrium, Rt Ventricle, Lt Ventricle

200

What does Amplitude (Gain) control?

Regulates the height of complexes.

200

What is the lead placement for telemetry? ( 3 leads/colors)

white- right shoulder, black- left shoulder, red- below left pectoral muscle/abdomen

200

Which leads are known as bipolar?

I, II and III

200

What is the definition of Depolarization?

cardiac cell positively charged, discharge of electricity

300

List the 4 valves of the heart.

Tricuspid, Pulmonic, Mitral, Aortic

300

What is the normal Gain setting?

10mm/mv

300

What is lead placement for Holter? (5 leads/colors)

white- rt sternal border, black- lt anterior axillary line, green- rt lower thoracic area, red- lt lower thoracic area, brown-  lt sternal border

300

What is another term for precordial(chest) leads?

unipolar

300

List the three natural pacemakers of the heart and each of their rates?

SA: 60-100, AV: 40-60. Vent: 20-40

400

What are three layers of the heart and briefly describe each. 

epi- outer, myo, middle/muscle, endo- inner

400

What is the normal Speed setting?

25mm/sec

400

What is placement for leads V7, V8 and V9?

posterioraxillary line, midscapulary line, next to the spinal border

400

Where is the current read from for leads AVR, AVL and AVF?

right arm, left arm, left leg

400

List two considerations that would require a right sided EKG.

pt 8yr or under, MI, dextrocardia

500

What are the 9 steps of the conduction pathway in order? (Can write on the board if needed.)

SA Node, Interatrial Tracts, Atrium, Internodal Tracts, AV Node, Bundle of His, Bundle Branches, Purkinje Fibers

500

What is the normal Calibration setting

10mm high by 5mm wide.

500

List the placement for the 6 precordial leads.

V1- 4th ICS, right sternal border

V2- 4th ICS, left sternal border

V3- between V2 and V4

V4- 5th ICS, midclavicular line

V5- 5th ICS, anterioraxillary line

V6- 5th ICS, midaxillary line

500

Which leads are the augmented leads and what does augment mean?

AVR, AVL, AFL and to make larger

500

14 Steps for blood flow in order. ( Can write on the board if needed.) 

IVC/SVC, Rt Atrium, Tricuspid Valve, Rt Ventricle, Pulmonic Valve, Pulmonary Arteries, Lungs, Pulmonary Veins, Lt Atrium, Mitral Valve, Lt Ventricle, Aortic Valve, Aorta, Body