NR 509 APEA EXAM – CARDIO. Question 1:
The lymphatic ducts drain into the:
... [Show More]
arterial system.
venous system. Correct
arteriovenous system.
capillary bed. Incorrect
Explanation:
The lymphatic ducts drain into the venous system.
Question 2:
While auscultating the patient's heart, a medium, soft murmur is audible. It is pansystolic and heard loudest at the apex with radiation to the left axilla. These findings are consistent with:
tricuspid regurgitation.mitral regurgitation. Correcta ventricular septal defect.an innocent murmur. Incorrect
Explanation:
Mitral regurgitation produces a pansystolic, harsh murmur heard loudest at the apex with radiation toward the left axilla. The intensity of the murmur can be soft or if there is an atrial thrill, it can be loud. With tricuspid regurgitation, the murmur is audible loudest at the left sternal border with radiation to the right sternal border, xiphoid area, or to the left midclavicular line. It produces a blowing sound and is pansystolic. The murmur of an uncomplicated ventricular septal defect has a high pitch and is usually heard throughout systole. An innocent murmur is heard loudest at mid systole near the second to fourth intercostal spaces between the left sternal border and the apex. It usually decreases or disappears when sitting.
Question 3:
Which of the following group of symptoms would be suggestive of an infant experiencing a congenital heart defect associated with a decreased pulmonary blood flow pattern?
Tissue perfusion greater than 3 seconds, bluish colored skin, and poor feeding Correct
Abnormal heart sounds, capillary refill less than 2 seconds, and oxygen saturation less than 95%
Capillary refill less than 2 seconds, tissue perfusion less than 3 seconds, and oxygen saturation greater than 95%
Poor feeding, audible heart murmur, and oxygen saturation greater than 95%
Explanation:
Infants with defects resulting from decreased pulmonary blood flow have cyanosis because of desaturated blood entering systemic circulation and/or because of the inability to get blood to the lungs. Tetralogy of Fallot (TOF), pulmonary atresia and tricuspid atresia all fall in this category and are considered cyanotic defects. Due to the ventricular septal defect in TOF, the absence of the tricuspid valve or pulmonary valve in tricuspid and pulmonary atresia, one should hear abnormal heart sounds either due to the murmur in TOF or single heart sounds of S1 or S2 in pulmonary atresia or tricuspid atresia. Usually these infants have activity intolerance and therefore, experience failure to thrive because of their inability to consume enough formula to gain weight appropriately. Capillary refill is usually prolonged due to poor oxygenation and poor perfusion secondary to the defect as well as the O2 sats being lower than normal, sometimes even in the 80% range.
Question 4:
Right atrial pressure can be determined by:
palpating the carotid pulse. Incorrect
identifying the pulsations of the right jugular vein. Correct
analyzing the arterial blood gases.
assessing for dependent edema. [Show Less]