the cardiovascular exam in infants and children heart rate most labile of the vital signs wide...
Post on 22-Dec-2015
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Heart Rate
• Most labile of the vital signs
• Wide variations are normal
• Sensitive to multiple stimuli
0
50
100
150
200
250
Birth 3 Yrs 8 Yrs 15 Yrs
MaxMeanMin
Blood Pressure
• Blood pressure increases with age
• Use appropriate cuff• Repeat if abnormal
0
20
40
60
80
100
120
140
Birth 3 Yrs 8 Yrs 15 Yrs
Systolic Diastolic Mean
Respiratory Rate
• Sensitive but non-specific for CHF
• Most reliable while asleep
• Minimal dyspnea with heart failure
0
10
20
30
40
50
60
70
Birth 3 Yrs 8 Yrs 15 YrsMaxMeanMin
Inspection
• Growth (linear growth is spared)
• Color (cyanosis, pallor)
• Respiratory effort
• Precordial bulge
• Apical impulse
Palpation
• Pulses (upper and lower)
• Precordial activity
• Thrills
• Liver edge
• Perfusion
• Skin temperature
Pulses
Diagnosis: Arms Legs
Coarctation Increased Decreased
Patent Ductus Increased Increased
Aortic Stenosis Decreased Decreased
Auscultation
• Use your own stethoscope
• Insist on quiet surroundings
• Be methodical
• Be patient
• Come back and listen again
• Don’t get discouraged
Heart Sounds
• S1- closure of AV valves
• Increased in ASDs
• Obscured by holosystolic murmurs
• Variable in complete heart block
Heart Sounds
• S2- closure of semilunar valves
• Increased P2 if increased pulmonary artery pressure
• Fixed splitting in ASDs
Heart Sounds
• S4- atrial contraction
• Uncommon in children, even in CHF
• Usually indicates a cardiomyopthy
Ejection Clicks
• Early systolic, high frequency sounds
• Occur shortly after S1
• Signify semilunar stenosis
• Variable (louder on expiration) if pulmonary
• Constant (don’t vary with respiration) if aortic
Holosystolic Murmurs
• Begin with or obliterate the first heart sound
• Typical examples are VSD and MR
Murmurs
H o losysto licV S DM R
S ysto lic E jec tionA SP S
S ysto lic
D ecresendoA R
R um b leA S DV S D
D iasto lic C on tinuousP D A
M urm urs
Systolic Ejection Murmurs
• Most common of all murmurs
• Begin after S1
• Originate in outflow tracts
Decrescendo Diastolic
• Loudest in early diastole
• High pitch typical of aortic regurgitation
• Low pitch typical of pulmonary regurgitation
Diastolic Rumble
• Usually increased flow across a normal mitral or tricuspid valve
• Very low frequency and intensity
• Generally the result of VSDs and ASDs
Continuous Murmurs
• Any murmur which continues through S2
• Vascular in origin
• Patent ductus arteriosus and venous hum are the most common source
Characteristics of Murmurs
• Loudness (Grade 1 to 6)
• Location
• Radiation
• Changes with respiration, position, valsalva
• Pitch or frequency
• Length
Radiation of Murmurs
• Aortic -RUSB to neck• Pulm-LUSB to lungs• VSD-LLSB• MR-Apex to axilla
AoPa
VSD
MRM
Innocent Murmurs
• Grade I-II/VI (rarely III/VI)
• Systolic (except venous hum)
• Often vibratory
• Change with respiration and position
• Short
• Unassociated with abnormal heart sounds
• Characteristic age 3 to 12 years