Theme 5 Toni Cardiovascular System Flashcards
What is the average blood pressure
120-140 over 80-90
What is the cardiac cycle?
When the heart pumps blood by a series of muscle contraction and relaxations between each beat
What is diastolic
The relation of the heart
What is systolic
The contraction of the heart
describe a ventricular heart rate
Rapid, wide irregular ventricular complexes
Describe atrial fibrillation heart rate
Baseline irregular. Ventricular responses irregular
Is atrial or ventricular fibrillation life threatening
Ventricular fibrillation
Impact of atrial fibrillation
Ventricles don’t fully fill with blood, fast heart beat, sometimes palpitations, could cause a stroke
Impact of ventricular fibrillation
The heart is no longer an effective pump can cause death if life support isn’t used immediately (defibrillator)
What is the signs of bradycardia on an ecg
Complexes are normal, evenly spaced but beats per minute rate less than 60
Tachycardia signs on an ecg
Complexes are normal and evenly spaced but heart rate is more than 100 beats per minute
More heart beats than normal
Arrhythmia signs ecg
All complexes are normal but an irregular rhythm
What blood can someone be given with AB blood
Any blood
What blood can someone with o blood be given
Only o
What is the most common blood type
O Ph positive
What is the universal blood type
O Rh negative
Why is the cardiovascular system described as a circulatory system?
The heart pumps the blood around the heart twice per circuit (deoxygenated to the lungs and oxygenated around the body)
What is the role of the SAN?
It sets the rate at which the heart contracts
What does the bundle of his do?
It transmits the impulses to the lest and right bundle branches and into the ventricles causing synchronised contractions of the ventricles.
What is coronary heart disease
A building up of fatty deposits in the coronary artery
What health problems does coronary heart disease cause
Heart attacks, heart failure, lack of blood flow causing death.
What are the causes of coronary heart disease
high blood pressure, high cholesterol, smoking
What is atherosclerosis?
The process of the walls of the arteries becoming furred up with fatty deposits
What is atheroma
Fatty deposits
