Ch. 4 Cardiovascular System Flashcards
What subsystem of the circulatory system is responsible for the exchange of blood gases?
Pulmonary
Of the four cardiac chambers, which one lies midline with the cardiac shadow and is also located anteriorly?
Right ventricle
Which is the thickest layer of heart tissue?
Myocardium
Which chamber of the heart is generally the largest?
Left ventricle
Which chamber of the heart houses the SA node, responsible for the electrical conductivity?
Right atrium
What portion of the electrocardiogram (ECG) represents the ventricular depolarization?
QRS complex
Why is it important to perform chest radiography in the upright position?
Prevents magnification of the heart
What geometric factor(s) may affect the radiographic appearance on the PA chest?
SID, OID, anode heel
Cardiomegaly can be diagnosed on the PA chest radiography when the cardiac shadow is _____________ of the transverse diameter of the thorax.
More than half
What type of echocardiography permits real time imaging of the heart?
2D
What pathological conditions can be diagnosed with Doppler sonography?
DVT, carotid stenosis, venous thrombosis
The widely performed myocardial perfusion scans are used to evaluate:
Coronary artery stenosis, follow up for surgery and ischemia
What procedure in nuclear cardiology is used to evaluate ventricular function?
Gated cardiac blood pool
What type of procedure is angiography?
Diagnostic and therapeutic
What situations may require interventional embolization as a treatment option?
Clotting, feeding brain tumors
Transjugular intrahepatic portosystemic stent (TIPS) is used to connect the jugular vein to the portal vein in cases to:
Severe cirrosis