Lab: EKG Flashcards
Sound of the Triscuspid Valve
Auscultation of the right sternal margin of the 5th intercostal space (Bottom Right)
Sound of the Mitral Valve
Auscultation over the heart apex, at the center of the clavicle at the 5th intercostal space (Bottom Left)
Sound of the Pulmonary Valve
Auscultation of the left sternal margin at the 2nd intercostal space (Top Left)
Sound of the Aortic Valve
Auscultation of the right sternal margin at the 2nd intercostal space (Top Right)
What is a heart murmur and how is it detected?
Detected by Auscultation, a swishing noises caused by a back flow of blood.
The sound of the closure of AV valves
Lub (valves)
The sound of the closure of Semilunar valves
Dub (valves)
The sound of the end of systole
Dub (systole vs diastole)
The sound of the beginning or ventricular systole
Lub (systole vs diastole)
Alternate names for S-1 S-2
Alternate names for Lub-Dub
Pulse
Alternating surges of pressure in an artery with systole and diastole
Pulse pressure
The difference between systolic and diastolic pressure
Stimulates the atria to depolarize
The role of the SA node
The P wave
Wave representing atrial depolarization/contraction on an EKG
Stimulates blood to enter the ventricles
The role of atrial pressure caused by atrial contraction
Period when the AV valves are open
Valve status during diastole
The QRS complex
Wave representing ventricular depolarization on the EKG
Period when ventricles contract
During systole halfway through QRS complex
Period on EKG of systole
From R- end of T wave.
Period on EKG of diastole
From end of T wave until halfway through the QRS complex.
What occurs between S1-S2
Systole’s position on the EKG
Systole
Contraction phase of the heartbeat when blood is pumped from the chambers into the arteries
Diastole
Relaxation phase of the heartbeat when the chambers to fill with blood
What causes the semilunar valves to open?
Rapid ejection of blood during ventricular contraction
The T wave
Wave representing Ventricular Repolarization on the EKG
Passive ventricular filling
Phase 1, when atrial pressure forces AV valves open. Blood flows from atria to ventricles.
Ventricular filling with atrial contraction
Phase 2, when atria contract to complete filling of the ventricles and ventricular diastole ends.
Isolvolumetric contraction
Phase 3, when ventricles begin to contract and ventricular pressure increases, closing the AV valves.
Ventricular ejection
Phase 4, when ventricular pressure continues to rise, causing an ejection of blood through the SL Valves
Isolvolumetric relaxation
Final Phase (5), when pressure in the ventricles fall as they relax. SL valves close.
Ventricular filling valve status
Ventricles: Relaxed/Diastole Atria: Relaxed/Diastole AV Valves: Opened SL valves: Closed
Ventricular filling with atrial contraction valve status
Ventricles: Relaxed/Diastole Atria: Contracted/ Systole AV Valves: Opened SL valves: Closed
Isolvolumetric contraction valve status
Ventricles: Contracted/ Systole Atria: Relaxed/Diastole AV Valves: Closed SL valves: Closed
Ventricular ejection valve status
Ventricles: Contracted/ Systole Atria: Relaxed/Diastole AV Valves: Closed SL valves: Open
Isolvolumetric relaxation valve status
Ventricles: Relaxed/Diastole Atria: Relaxed/Diastole AV Valves: Closed SL valves: Closed
Equivalent to one heartbeat
Equivalent to one cardiac cycle
Total heart relaxation
Quiescent period
