Lab 6 - Cardio Phenomena

Auscultation

Listening to the internal sounds of the body for the purposes of examining the circulatory and respiratory systems

Stethoscope

An acoustic medical device for auscultation; most often used to listen to heart sounds and breathing; earpieces, diaphragm, bell

Bradycardia

Resting heart heart under 60 beats/minute

Tachycardia

Resting heart rate above 100 beats/mintue

1st sound - "Lubb"

QRS: ventricular depolarization; closing of AV valves; sound is after the complex; sound is longer and louder

2nd sound - "Dub"

T: ventricular repolarization; closing of semilunar valves; sound is at the wave; sound is short and sharp

Left AV

= bicuspid = mitral valve

Right AV

= tricuspid valve

Pulse

Alternating surges of pressure (expansion and recoil) in an artery that occur with with contraction and relaxation of the left ventricle

Sounds of Korotkoff

The noises heard when taking a blood pressure reading, originated by blood passage causing vibrations in the walls of the blood vessel

Regurgitation

Abnormal leaking of blood through the valves

Stenosis

A valve that has last its pilability

Ventricular Systole

Contraction of ventricles driving blood out of the chambers; relates to the QRS complex (ventricular depolarization)

Systolic Pressure

Pressure in the arteries at the peak of ventricular ejection; the larger of the two readings

Ventricular Diastole

Period of time when the heart fills with blood after contraction; related to the T wave (ventricular repolarization)

Diastolic Pressure

Pressure in the arteries during ventricular relaxation; the smaller of the two readings

Sphygmomanometer

A device used to measure blood pressure, comprising an inflatable cuff to restrict blood flow, and a mercury or mechanical manometer to measure the pressure