Health assessment-test 2-heart and neck vessels Flashcards
Diastole
ventricles are relaxed
M/T vavles open; A/P valves close
systole
ventricles contract;
M/T valves close; A/P valves open
S1?
closure of the T/M valves; signals beginning of systole
LUB
S2?
closure of A/P valves
DUB
S3?
extra heart sound; ventricular filling creates vibrations that can be heard over chest
S4?
extra heart sound; end of diastole; atria contract and push blood in a noncompliant ventricle which creates vibrations
preload
venous return that builds during diastole (length the ventricular muscle is stretched at the end of diastole just before contraction)
afterload
opposing pressure the ventricle must generate to open the aortic valve against the higher aortic pressure; resistance against which the ventricle must pump its blood
point of maximal impulse (PMI)
Where is it?
what size is it normally?
Where is it when heart is enlarged?
usually in the 4th or 5th ICS near (or medial to) the midclavicular line
about the size of a dime (1 x 2 cm)
displaced to the left when heart is enlarged
cardiac thrill
feel a thrill
turbulent flow across a valve
heaves
aka lift
sustained forceful thrusting of the ventricle during systole
occurs with ventricular hypertrophy as a result of increased workload
murmurs
gentle blowing, swooshing sound that can be heard on the chest wall; turbulent blood flow
causes: velocity of blood increases,
viscosity of blood decreases (anemia),
structural defects in the valves
When can you best hear a high pitch murmur?
when patient is leaning forward
summarize heart failure symptoms
dilated pupils skin pale, gray or cyanotic dyspnea orthopnea crackles, wheeze cough decreased BP nausea/vomiting ascites dependent, pitting edema (sacrum/legs) anxiety falling O2 saturation confusion jugular vein distention infarct fatigue S3 gallop, tachycardia enlarged spleen and liver decreased UO weak pulse, cool moist skin