Exam 4 Flashcards
cardiac landmarks for assessment and how to assess
APE To Man, A2 (aortic), P2 (pulmonary). Erb’s point, T1 (tricuspid), M1 (mitral); assess clock wise starting with aortic (right upper quadrant)
direction of blood flow through the heart
IVC and SVC- RA- tricuspid- RV pulmonic valve- pulmonic artery-lungs -pulmonary veins- LA-bicuspid- LV -aortic valve-body and coronary arteries
diastole
ventricles relax and fill with blood
systole
heart contracts
two distinct components to each heart sound exist because
cardia depolarization occurs slightly later on the right side of the heart than on the left side
discribe conduction of the heart from SA node
conduction: cardiac impulse originates in the sinoatrial node and spreads through the atria and to the atrioventricular node, where it is delayed. Impulses travel to the bundle of His, the right and left bundle branches and then to the ventricles.
what are signs of aging that occur to the cardio vascular system
systolic increases, left ventricular wall thickens, decreased ability of the heart to augment cardiac output with exercise, increased presence of supraventricular and ventricular arrhythmias with aging
how to assess for JVD
inspect for JVD when head of exam table 45 degrees, positive indicates increased CVP and right side heart failure
how to assess carotid artery
auscultate for bruit, positive indicates narrowing of carotid artery
what is a bruit
blowing, swishing sound that indicates blood flow turbulance in a vessel
how should you assess pulse deficit?
detect irregular rhythm assess apical beat simultaneously with radial pulse, if difference in the two is detected subtract radial rate from apical rate. this is recorded as the pulse deficit
what type conditions does pulse deficit cause
present with weak contration of ventricles occuring with atrial filbrillation, premature beats, or heart failure
How should we assess point of maximal impulses PMI?
palpate where apical impulse can be best palpated, heave or lift of chest wall occurs with ventricular hypertrophy; right ventricular heave at sternal border, left ventricular heave at apex
4 guide lines for S1 vs. S2 sound
- S1 is normally first except for in trachyarrhythmias
- S1 is louder than S2 at the apex; S2 louder than S1 at base
- S1 coinsides with the carotid artery pulse
- S1 coinsides with the R wave in on ECG monitor
what is S3
third heart sound, ventricular gallop (ken-tuck-y), heard best at apexwith client lying on left side, normal in children and young adults, sign of heart failure in other adults
what is S4
fourth heart sound artial gallop (ten-nes-see), heard over tricuspid or mitral areas, occurs before S1, heard in older adults with hypertension aortic stenosis or history of myocardial infarction, listen with bell at apex with pt in left lateral position
grading scale of murmurs
i-barely audiable ii-audible but quiet and soft iii-moderately loud with no thrust or thrill iv- loud with thrill v- very loud with thrust or thrill vi- loud enough to hear before stethoscope come in contact with skin
Aortic prosthetic valve sounds
hear a ticking or clicking sound with artificial (mechanical) valve
assessing pericardial friction rub
have pt sit up, lean foward and exhale, listen with diaphragm over 3rd ICS on left side of chest, sounds like scratchy rubbing sound
what is thrill?
palpable vibration suggests valve dysfunction, feels like purring cat
what is a heave or lift?
during palpation can feel lifting of chest wall; if along left sternal borde, may be right ventricular hypertrophy and if over left ventricular area may be ventricular aneurysm
characteristics to look for of a murmur
timing, loudness, pitch, pattern, quality, location, radiation, posture
regurgitation murmur
back flow of blood bc of incompetent valve that can’t close properly so blood leaks back into previous chamber
stenosis
murmur caused by narrowing of valve opening bc calcification, fibrosis, or thickening of leaflets lead to a decreased blood flow through the valve