Cardiology Flashcards
S1
mitral/tricuspid (AV) vales closure; aortic/pulmonic (semilunar) valves open
S2
aortic/pulmonic (semilunar) valves closure; mitral/tricuspid (AV) vales open
S1 and S2 sounds occur during to
valves CLOSING
Systole
period between S1 and S2
Diastole
period between S2 and S1
S3
“Ken-tuck-y”
Increased fluid states (ie CHF, pregnancy)
S4
“Ten-ne-ssee”
Stiff ventricular wall (ie MI, L ventricular hypertrophy, chronic hypertension)
Which side of the heart has more pressure?
L side has more pressure
L side has oxygenated blood going to body
Aortic auscultatory area
R upper sternal border (RUSB)
Pulmonic auscultatory area
L upper sternal border (LUSB)
Aortic or mitral auscultatory area
Apex (Erb’s point)
Ventricular septal defect or tricuspid auscultatory area
L lower sternal border (LLSB)
Blood flows from
higher to lower pressure
Murmur loudness scale
I-VI Systolic
Ventricular septal defect (VSD)
Thrill
Obstructive defects
Ejection clicks d/t turbulence
Reffered or radiated sound noted
Fetal resistance and flow
Increased pulmonary vascular resistance (PVR), decreased systemic vascular resistance (SVR)
No lung flow
Neonatal resistance and flow
Decreased pulmonary vascular resistance, increased systemic vascular resistance
Lung flow
Pneumonic for heart valves
TPMA Tricuspid Pulmonic Mitral Aortic
Congenital Heart Diseases/Defects
A variety of cardiovascular malformations resulting from abnormal structural development in the 1st trimester.
Etiology is multifactorial and includes chromosomal abnormalities, adverse environmental conditions, and unknown factors.
Congestion heart disease occurs in 8:1,000 births
Heart defects noted congenitally:
- Acyanotic lesions (L to R shunting)
- Cyanotic lesions (R to L shunting)
- Obstructive lesions
Most common congenital heart defect
VSD - comprises up to 30% of all congenital heart defects
3 Acyanotic heart defects
L to R shunting
- Atrial Septal Defect (ASD)
- Ventricular Septal Defect (VSD)
- Patient ductus arteriosus (PDA)
Atrial Septal Defect (ASD)
Murmur: Grade II - III/VI systolic ejection murmur (may or may not be heard)
**Heard best at he L upper sternal board
EKG: R ventricular hypertrophy
Xray: Cardiomegaly, increased pulmonary vascular markings (big heart)
Ventricular Septal Defect (VSD)
Murmur: Grade II - V/VI systolic ejection murmur
**A holosystolic THRILL may be felt at LLSB (throughout systole)
EKG: LVH progressing to biventricular hypertrophy if large VSD
Xray: Cardiomegaly, increased pulmonary vascular markings
Patient ductus arteriosus (PDA)
5-10% of congenital heart defects in term infants; very common in premature infants
Murmur: LUSB II - IV/VI holosystolic
**“Machinery” sound
EKG: LVH to biventricular hypertrophy
Xray: Cardiomegaly, increased pulmonary vascular markings
2 Cyanotic heart defects
R to L shunting – unoxygenated blood going to the L side and then out to body
- Transposition of the Great Arteries
- Tetralogy of Fallot