HEMODYNAMICS MIDTERM Flashcards Preview

DMS 120 & 122- PHYSICS & HEMODYNAMICS MIDTERM > HEMODYNAMICS MIDTERM > Flashcards

Flashcards in HEMODYNAMICS MIDTERM Deck (50):
1

The posterior cerebral artery wraps around the...

cerebral peduncle

2

Intracranial arterial velocities decrease with...

increasing age

3

When performing a transcranial color doppler (TCD) imaging examination, the best results are obtained using a _____ transducer

2 MHz

4

Identification of normal cranial arteries is not based on _____

blood flow velocity

* based on flow direction & the anatomy

5

A low hematocrit (less than30%) is associated with _____

increased intracranial arterial velocities

6

The anterior cerebral artery (ACA) is normally evaluated from the _____

transtemporal approach

7

Poor temporal window, patient movement, anatomic variations are limitations of a _____

TCD examination

8

Most users report _____ velocities during TCD examinations

Mean

9

The right and left coronary arteries arise from the _____

Ascending Aorta

10

Recess of the oblique sinus landmark is used to separate pericardial fluid from...

pleural euffusion

11

Most coronary venous drainage is into the ____

Coronary Sinus

12

The right and left coronary arteries arise from the _____

Ascending Aorta

13

The apex of the heart is formed by the ____

Left ventricle

14

Defects in the valves may cause turbulence or regurgitation on auscultation, which is called...

Murmur

15

The most posterior chamber to the left of the sternum is the ____

Left Atrium

16

Sinoatrial note initiates the normal ____

cardiac impulse

17

The base of the heart is formed by the _____

Left atrium

18

The mitral valve separates ____ and _____

Left Atrium; Left Ventricle

19

The right border of the heart is formed by the ____

Right Atrium

20

Transient partial or complete loss of vision is known as ______

Amaurosis Fugax

21

Pulsed wave doppler transducer is used for _____ imaging examinations

TCD

22

During color doppler transcranial imaging, the middle cerebral artery (MCA)) runs parallel to the ______

Sphenoid Wing

23

Transient partial or complete loss of vision is known as _____

Amaurosis Fugax

24

The carotid body assists in regulating:

- heart rate
- blood pressure
- respiration

25

Placement of the doppler sample volume should be pallet to ______

Vessel walls

26

Normal vertebral arteries are:

asymmetrical

27

Petrous portion of the ICA is evaluated during ____

Carodit duplex imaging examinations

28

End-diastolic velocity greater than _____ should be used to classify a greater than 80% diameter reduction of the origin of the ICA

155 cm/sec

29

An ultrasound finding of the doppler signal from an external carotid artery (ECA) is ______ waveforms

high-resistance

30

The doppler sample volume should be kept ____(small or big?) during a carotid duplex imaging examination.

small

31

Approximately _______ strokes occur each year in the US

700,000

32

An ultrasound finding of the doppler signal from an ECA is ______ waveforms.

high-resistance

33

______ branches of the ECA is the most commonly visualized

Superior thyroid

34

A different of greater than ______ pressure between arms suggests diastase of the subclavian artery

20 mm

35

Duration less than ____ hours phrases describe a TIA (transischemic attack)

24

36

the innominate artery divides into the RXA and ______

Right subclavian artery

37

The superior vena cava (SVC) enters the right atrium _____

medially

38

The middle cerebral artery is located at the depth of ___ to ____ millimeters

30; 67

39

The mitral valve separates:

left atrium and left ventricle

40

The posterior cerebral artery wraps around the _____

cerebral peduncle

41

The two A1 segments of ACA are joined by ________

anterior communicating artery

42

Zero degree angle is assumed when performing ____ imaging examinations

TCD

43

A high-resistance doppler signal is normal characteristic of ______ artery evaluation during a TCD exam.

Ophthalmic

44

The innominate artery divides into the ___________ and ___________ arteries.

Right common carotid; right subclavian

45

A characteristic of a subclavian steal is:

Reversal of blood flow in the vertebral artery

46

Fibromuscular dysplasia typically affects _____ of the internal carotid artery

Midportion

47

A warning sign of stroke is _______.

Temporary blindness in one eye

48

Noise caused by tissue vibration produced by turbulent flow is:

Bruit

49

Infundibulum.

The outflow tract of the right ventricle

50

The tricuspid valve opens when the:

Right ventricle pressure drops below the right atrial pressure.