Charts COPY Flashcards
Supply the heart muscle with oxygen to feed the heart muscle
The Coronary Arteries
Gets oxygenated blood via the AORTA
The coronary arteries
Contraction of the myocardium
Systole
Relaxation of mycardium
Diastole
Amount of blood pumped by each ventricle in 1 minute
Cardiac output
History of present illness, past health history, past and current medications, and surgery or other treatments
Subjective data, health information
List sight common sights for palpating arteries
Carotid (neck), brachial (inner bend of elbow), radial (wrist), ulnar (pinky side of wrist), femoral (groin), popliteal (behind knee), posterior tibial, doralis pedis
List Geriatric Cosiderations
- Age alters the cardiovascular response to physical and emotional stress.
- Heart valves become thick and stiff (tricuspid, mitral, pulmonary and aortic)
- Frequent need for pacemaker as well as replacing pacemaker
- Increase in SBP; decrease or no change in DBP
Blood studies, chest x-ray, electrocardiogram
Diagnostic Test
Chemical found after a myocardial infarction. Maybe found in agina patients.
Triponin
Measuring the size of the heart.
Chest x-ray
Picture of the exact measurements of the heart from 12 angles
Resting ECG
Picture of the heart
Event monitor or loop recorder
Places on chest for 1 or 2 days and it tapes your heart for 3 days and a diary is kept to explain
Halter monitor
Heart pumps blood through the body
Conduction
This is accomplished by contraction and relaxation of the cardiac muscle tissue in the myocardium layer.
Conduction
The electrical conduction system controls the heart rate
Cardiac conduction system
Explain conduction in the sinoatrial node
Located in the back wall of the right atrium near the entrance of vena cava,
Initiates impulses 70-80 times per. In without any nerve stimulation from brain. ( normal pulse is 78-82)
Establishes basic rhythm of the heartbeat
This is where the pulse rate is
Called the pace maker of the heart
Sinoatrial node
Impulses move through atria causing two atria to contract
sinoatrial node
At the same time. Impulses reach the second part of the conduction system
Sinoatrial Node
Located in the bottom of the right atrium near the septum.
Atrioventricular Node
What does cells in the AV node do?
Conduct impulses more slowly, so there is no delay as impulses travel through the the node
Allows time do aria to finish contraction before ventricles begin contacting
Atrioventricular Node
What does the AV bundle branch form and what does it do?
The AV bundle branch to form the Purkinjie fibers that transmit the impulses to the myocardium
Muscle tissues
Myocardium
The function of the bundle of his, bundle branches and Purkinjie fibers
Transmits quickly and cause both ventricles to contract
What like a phone tree
The bundle of His, bundle branches , and the Purkinjie fibers
From the AV node, impulses travel through right and left and
Left bundle branches and these branches extend to the right and left sides of the septum and the bottom of the heart
As the ventricles contract what’s happens and what is this called?
As the ventricles contract, blood is forced out through the semilunar valves into the pulmonary trunk and the aorta.
What happens after the ventricles complete their contraction phase?
They relax and the SA node initiates another impulse to start another cardiac cycle.
What does the conduction systems consist of?
1- Sinoatrial node (SA)
2- Atrioventricular node (AV node)
3- Bundle of His
4- Right & Left Bundle Branches which lead to the Purkinje fibers
