Heart Anatomy
What are the 4 chambers of the heart ?
Right Atrium , Right Ventricle , Left Atrium , Left Ventricle
Blood returns from the body to which chamber first ?
Right Atrium
One small box on ECG paper equals how many seconds ?
0.04 seconds
Formula for Cardiac Output ?
CO = HR times SV
Why is hypertension called the "silent killer " ?
Often has no symptoms until damage occurs
What are the 3 layers of the heart ?
Epicardium , Myocardium , Endocardium
What valve is between the RA and RV
Tricuspid Valve
What does the P wave represent ?
Atrial Depolarization
What does SV stands for ?
Stroke Volume
What sodium intake is recommended on the DASH diet ?
Less than 2,000mg/day
Which layer is the muscular middle layer ?
Which artery carries blood from the RV to the lungs
Pulmonary Artery
Normal PR Interval ?
0.12-0.20 seconds
What is preload ?
Amount of blood filling the ventricles before contractions
BP of 180/120 with organ damage is called what ?
Hypertensive Emergency
What structure surrounds and protects the heart ?
Pericardium
Which vessels bring oxygenated blood from the lungs to the heart
Pulmonary veins
When does the QRS complex represents
Ventricular Depolarization
What is after load ?
Resistance the ventricles must overcome to pump blood
BP of 180/120 without organ damage is called what ?
Hypertensive Urgency
Which valve is on the left side between the left atrium and left ventricle ?
Mitral valve
Put these in order LA,LV,Aorta
LA - Mitral Valve - LV - Aortic Valve - Aorta
What two rhythms are considered deadly rhythms and medical emergencies ?
V-Tach and V-Fib
What happens to stroke volume when after load becomes too high ?
Stroke Volume decreases
Normal MAP range ?
70-110 mmHg