Ch. 426 - Acyanotic CHD: Left-to-Right Shunt Lesions Flashcards Preview

Nelson - Exam 5 (Cardio/Hema/Onco) > Ch. 426 - Acyanotic CHD: Left-to-Right Shunt Lesions > Flashcards

Flashcards in Ch. 426 - Acyanotic CHD: Left-to-Right Shunt Lesions Deck (52)
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1

MC form of ASD

Ostium secundum defect in the region of the fossa ovalis

2

T/F MC form of ASD is associated with normal AV valves

T

3

Males vs females: ASD

Females

4

T/F A child with an ostium secundum ASD is most often asymptomatic

T

5

Dyspnea on standing relieved when supine

Platypnea

6

Destauration on standing, relieved when supine

Orthodeoxia

7

Symptoms that may occur when R-L shunting occurs through an ASD

Platypnea and orthodeoxia

8

Characteristic finding on auscultation in patients with ASD

Widely split S2 during ALL PHASES of respiration

9

Murmur of ASD is best heard where

Left middle and upper sternal border

10

Murmur of ASD is produced by

Increased flow across the RV outflow tract into the pulmonary artery NOT BY LOW-PRESSURE FLOW ACROSS THE ASD

11

RSR pattern seen in ASD is caused by

Minor right ventricular conduction delay

12

Normal motion of ventricular septum during phases of the cardiac cycle

Moves posteriorly during systole and anteriorly during diastole

13

Motion of ventricular septum during phases of the cardiac cycle in ASD

Septal motion is either flattened or reversed (anterior movement in systole)

14

T/F Secundum ASDs are usually isolated

T

15

Type of ASD associated with Holt-Oram syndrome

Secundum

16

Indications for transcatheter closure or surgical device closure in patients with ASD

Asymptomatic patients with Qp:Qs ratio of at least 2:1 or those with RVE

17

Timing for closure of ASD

After the 1st year and before entry into school

18

ASD repair is preferred during early childhood because

1) Significantly greater surgical mortality and morbidity in adulthood 2) Long-term risk of arrhythmia is greater in adults

19

Procedure of choice for ASD closure

Percutaneous catheter device closure

20

ASD closure is not required in this population of patients

1) Small secundum ASDs 2) Small L-R shunts without RVE

21

T/F Small to moderate sized ASDs detected in term infants may close spontaneously

T

22

Secundum ASDs are well tolerated in childhood and symptoms do not usually appear until ___ year

3rd decade or later

23

T/F IE is common in secundum ASDs

F, extremely rare; antibiotic prophylaxis is NOT recommended

24

T/F Heart size decreases to normal after surgical or device closure of moderate to large ASDs in children

T

25

Late right heart failure and arrhythmias are more frequently encountered in patients who undergo repair after ___ years

20

26

Type of ASD located in the upper part of the atrial spetum in close relation to the entry of the ASD

Sinus venosus ASD

27

Partial anomalous venous return usually involves some or all veins from only 1 lung, more often which side

Right

28

When an associated ASD is present in a PAPVR, the ASD is usually of what type

Sinus venosus

29

Anomalous vein draining into the IVC is visible on chest radiography as a crescentic shadow of vascular density along the right border of the cardiac silhouette

Scimitar syndrome

30

T/F Prognosis is excellent in PAPVR

T