Blood pumped into the pulmonary artery is still _______ blood.
Bicusped or mitral valve is located where?
between the left atrium and laft ventricle
The tricusped valve is located where?
between the right atrium and right ventricle
Sinoatrial Node (S-A node) is located where?
posterior wall of the right atrium
Note: The S-A node initiates the heartbeat without outside stimulation.
The impulse passes along fibers to A-V Node
Atrioventricular Node (A-V Node) is located where?
Floor of the right atrium
Note: A-V Node impulse passes into group of fibers called bundle of His
bundle of His conducts impulses from atria to ventricle
terminates in Purkinje fibers
Vegas nerve _____ the heart during rest and sleep and also transmits ________ which causes __________.
slows the heart
The vegas nerve is known as a cardio-_______.
Nerves of the _________ portion of the autonomic nervous system are cardiac-_________>
The sympathetic autonomic nervous system releases ______ which is a cardio-accelerator.
What type of line measures pressure of blood in the right atrium that is inserted via the jugular or subclavian to distal SVC?
Central venous pressure (CVP) line
What type of catheter permits monitoring of CVP (placed in right atrium or SVC) that has a proximal lumen port that is used for administration of drugs and fluid?
Type of catheter? Soft flow directed catheter with balloon at the tip for measuring: pulmonary arteriole pressure, arterial pressure, right atrial pressures (CVP), left atrial pressures, reflected left ventricular end diastolic pressure?
Note: Swans-Ganz catheter is introduced into the basilic or subclavian vein, to the SVC, to the right atrium, to the right ventricle, to the right pulmonary artery.
Can also be placed into the femoral vein to IVC if they cannot go another route
The _____ ventricle is not well visualized in a PA chest projection.
The heart is in the right side of the chest with the apex pointing to the right. *Just the heart*
Define situs inversus
Transposition of organs to the opposite side of the body.
Will notice the fundus of the stomach on the right side of the body.
For a normal adult heart size, the transverse diameter of the heart shadow should be _____________________ of the transverse diameter of thorax inside the rib cage.
less than 1/2.
If it is more than 1/2, it is cardiomegaly
Heart size can not be accurately estimated on AP supine CXR because?
diaphragm moves up
heart is further away from film-magnified
less than 72" SID (40-48)
What is introduced directly into one of the chambers of the heart or pulmonary artery that records hemodynamic and physiologic information?
Note: Left cardiac cath- arteriole access. Use pigtail catheter (non-tramic shape) for left ventricle. Pushes through aortic semilunar valve and into left ventricle (dysrhythmia common)
Contrast is injected, films taken, pressure measurements taken across aortic valve and left ventricle (should be same).
If aortic pressure is low-stenosis of valve.
Cardiac catheterization (arteriole access) is used to diagnosis _______, _________, ______ of the _____heart.
occlusions of vessels on the left side of the heart
Right cardiac catheterization (venous access). Line into ________ (_____-alternate) to the IVC, to right atrium, to right ventricle, to _______.