Transesophageal Echocardiogram Flashcards Preview

I&M for Anesthesia - Fall 2013 > Transesophageal Echocardiogram > Flashcards

Flashcards in Transesophageal Echocardiogram Deck (26):
0

What are the components of the left main coronary artery?

Left anterior descending
Circumflex
Ramus intermedius

1

The LAD, diagonals, and septal perf orators make up the

LAD

2

The circumflex is composed of the

Circumflex and obtuse marginals

3

The components of the right main coronary artery are

RCA
Acute/right marginals
Atrioventricular nodal
Posterior descending artery
PL

4

The function of pulmonary circulation is to

Supply nutrients and circulation to lung tissue

5

The superior and inferior ______ usually arise directly from the

Left bronchial arteries
Thoracic aorta

6

There is a single right bronchial artery. It arises from the thoracic aorta at a common trunk with the _____ and the _______ on the left side

Right third posterior intercostal artery
Superior bronchial artery

7

The darkest blood in the body is in the

Coronary sinus

8

Coronary artery perfusion depends on

Left vs right ventricle timing

9

What is the route of coronary circulation?

Sinus of valsalva - coronary arteries - capillaries - coronary veins - coronary sinus

10

Equation for coronary perfusion pressure?

CPP = DBP - LVEDP

11

What is the formula for the concentration of arterial O2?

CaO2= (1.34 x Hgb x SaO2) + (PaO2 x .003)

12

What is the formula for delivery of arterial O2?

DaO2 = CO x CaO2

13

What is the formula for the volume of O2 consumption? What is this value normally?

VO2 = CO (CaO2 - CvO2)

3.5 L/min or 45 ml/kg/min

14

What is the equation for mean arterial pressure?

MAP = (SBP + 2DBP)/3
MAP = CO x SVR

15

The normal range of cardiac output is? What about SVR and PVR?

CO = 4-6.5 L/min
SVR = 900-1500 dynes x sec/cm^5
PVR = 50-150 dynes x sec/cm^5

16

What the fuck are dynes?

The dyne is a unit of force specified in centimeters per seconds

Oh ok

17

What is normal ejection fraction of the left ventricle?

55-70%

18

The Frank Starling mechanism states that _____ increases with the increase of the blood volume filling the heart when all other factors remain constant. The increase in pressure stretches the ventricular wall, causing cardiac muscle to contract more

Stroke volume
Forcefully

19

How does an increase in after load affect stroke volume in hearts with myocardial dysfunction compared to in a normal heart?

Steep decline in stroke volume

20

The percentage of LV reduction in size after systole is

Variable
Dependent on valvular dysfunction
Dependent on anesthesia dysfunction

Other: LV mass, LV fractional shortening, regional wall motion, LV torsion, CO, MAP, and SV

21

What is the gold standard in cardiac testing?

Exercise stress EKG/echo test

22

Using persantine-dipyridamole for cardiac testing results in an ________ mediated vasodilation causing coronary steal

ADENOSINE!!

23

Dobutamine is a sympathomimetic ______ agonist with _____ agonism, _____ agonism racemic. It is used in

Beta1
B2
Alpha1
Cardiac

24

What are used as radioactive agents for markers of perfusion and pre and post stress testing?

Thallium 201
Tc99m sestamibi

25

Taking a loss for actual TEE material. Pictures are confusing

Sorry