HEMODYNAMICS MIDTERM Flashcards
The posterior cerebral artery wraps around the…
cerebral peduncle
Intracranial arterial velocities decrease with…
increasing age
When performing a transcranial color doppler (TCD) imaging examination, the best results are obtained using a _____ transducer
2 MHz
Identification of normal cranial arteries is not based on _____
blood flow velocity
- based on flow direction & the anatomy
A low hematocrit (less than30%) is associated with _____
increased intracranial arterial velocities
The anterior cerebral artery (ACA) is normally evaluated from the _____
transtemporal approach
Poor temporal window, patient movement, anatomic variations are limitations of a _____
TCD examination
Most users report _____ velocities during TCD examinations
Mean
The right and left coronary arteries arise from the _____
Ascending Aorta
Recess of the oblique sinus landmark is used to separate pericardial fluid from…
pleural euffusion
Most coronary venous drainage is into the ____
Coronary Sinus
The right and left coronary arteries arise from the _____
Ascending Aorta
The apex of the heart is formed by the ____
Left ventricle
Defects in the valves may cause turbulence or regurgitation on auscultation, which is called…
Murmur
The most posterior chamber to the left of the sternum is the ____
Left Atrium
Sinoatrial note initiates the normal ____
cardiac impulse
The base of the heart is formed by the _____
Left atrium
The mitral valve separates ____ and _____
Left Atrium; Left Ventricle
The right border of the heart is formed by the ____
Right Atrium
Transient partial or complete loss of vision is known as ______
Amaurosis Fugax
Pulsed wave doppler transducer is used for _____ imaging examinations
TCD
During color doppler transcranial imaging, the middle cerebral artery (MCA)) runs parallel to the ______
Sphenoid Wing
Transient partial or complete loss of vision is known as _____
Amaurosis Fugax
The carotid body assists in regulating:
- heart rate
- blood pressure
- respiration
Placement of the doppler sample volume should be pallet to ______
Vessel walls
Normal vertebral arteries are:
asymmetrical
Petrous portion of the ICA is evaluated during ____
Carodit duplex imaging examinations
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
An ultrasound finding of the doppler signal from an external carotid artery (ECA) is ______ waveforms
high-resistance
The doppler sample volume should be kept ____(small or big?) during a carotid duplex imaging examination.
small
Approximately _______ strokes occur each year in the US
700,000
An ultrasound finding of the doppler signal from an ECA is ______ waveforms.
high-resistance
______ branches of the ECA is the most commonly visualized
Superior thyroid
A different of greater than ______ pressure between arms suggests diastase of the subclavian artery
20 mm
Duration less than ____ hours phrases describe a TIA (transischemic attack)
24
the innominate artery divides into the RXA and ______
Right subclavian artery
The superior vena cava (SVC) enters the right atrium _____
medially
The middle cerebral artery is located at the depth of ___ to ____ millimeters
30; 67
The mitral valve separates:
left atrium and left ventricle
The posterior cerebral artery wraps around the _____
cerebral peduncle
The two A1 segments of ACA are joined by ________
anterior communicating artery
Zero degree angle is assumed when performing ____ imaging examinations
TCD
A high-resistance doppler signal is normal characteristic of ______ artery evaluation during a TCD exam.
Ophthalmic
The innominate artery divides into the ___________ and ___________ arteries.
Right common carotid; right subclavian
A characteristic of a subclavian steal is:
Reversal of blood flow in the vertebral artery
Fibromuscular dysplasia typically affects _____ of the internal carotid artery
Midportion
A warning sign of stroke is _______.
Temporary blindness in one eye
Noise caused by tissue vibration produced by turbulent flow is:
Bruit
Infundibulum.
The outflow tract of the right ventricle
The tricuspid valve opens when the:
Right ventricle pressure drops below the right atrial pressure.
