9. cardiovascular auscultation Flashcards
Methods of cardiovascular
examination: (physical examination)
- Inspection (heart, vessels)
- Palpation (heart, vessels)
- Percussion (heart)
- Auscultation (heart)
What instruments are used for the cardiovascular auscultation:
Plessimeter and stethoscope (fonendoskop)
Normal heart sounds:
- heart sounds
Alterations of the cardiac sounds: FRIDA
Frequency, Rhythm, Intensity, Demarcation, Adventitious sounds
Pulse deficit: Physiological or pathological?
Always pathological
Examination of pulse deficit:
Simultaneous auscultation and palpating the pulse.
Explain arrhytmia:
pathological rhythm, often with pulse deficit
Is respiratory arrhytmia slower or faster during expiration?
Slower: vagus effect
Normal intensity of the cardiac sound:
normally strong and even (uniform strength)
Explain pounding heart beat:
increasing of the first and/or second sound (slight variation over different valve areas)
Explain reduced heart sounds:
decreased cardiac output,
pericardial or +/- pleural effusion,
obesity
What is demarcation?
distinctness of the cardiac sounds
what can be heard in cardiomyopathies?
galopp sounds: three
heart sounds can be heard: 1.,2.,3. or 4.,1.,2
what can splitting of the 2. heart sound be caused by?
closure of the aortic and pulmonal valves in different time,
due to cor pulmonale causing increased pulmonary arterial pressure.
Additional or adventitious sounds of the heart:
murmur
The 4 allways of endocardial murmur
location,
intensity,
relation to cardiac cycle,
pitch
What is endocardial murmur caused by?
Turbulence
Types of extracardial murmur:
pericardial or pleuropericardial/ pleuropleural
what are the morphological causes of the endocardial murmurs?
Morphological : valve deformities, septal or vessel malformations
what are the functional causes of the endocardial murmurs?
Functional: innocent murmurs, anemia: decreased blood viscosity
What type of murmur can be heard when the extracardial murmur is due to inflammation?
-pericardial splashing, (frictional) rubbing, pleuropericardial/ pleuropleural rubbing.
What type of tests can be done when the extracardial murmur is due to inflammation?
Valsalva probe or compression test:
Pleuropericardial/ pleuropleural rubbing disappears if breathing stopped.
Pericardial rubbing increases if breathing stopped at the end of inspiration (increased intrathoracic pressure)
Classification of endocardial murmur:
- Localization
- Intensity
- Timing
- Frequency (pitch)
- Character (= quality, shape)
- Conduction
How do we localize a murmur?
Find points of maximal intensity (punctum maximum, puncta
maxima):
Determination of intercostal spaces in medium and large size animals.
Heart base vs. apex assignement in small size animals
Explain timing of a murmur?
Relation to the phase of the cardiac cycle:
systolic/diastolic/systolic and diastolic
How do we classify the frequency (pitch)
low, medium, high
Examples of pitches:
blowing, whistling, crackling, rough, musical murmurs
How do we describe the character of a murmur?
continuous, < crescendo, > decrescendo, <> crescendo-decrescendo