A father asks why his child with Tetralogy of Fallot seems to favor a squatting position. What is the nurse's best response?
Squatting increases the return of venous blood flow to the heart.
Squatting in common resting position when a child is tachycardic
Squatting decreases arterial blood flow away from the heart.
Squatting increase the workload of the heart.
The Correct Answer is A
A. Squatting increases the return of venous blood flow to the heart: Squatting increases systemic vascular resistance and venous return, which helps to increase oxygenation in children with Tetralogy of Fallot, as it reduces the right-to-left shunting and increases blood flow to the lungs.
B. Squatting in common resting position when a child is tachycardic: While squatting can be used to manage symptoms, this answer is misleading as squatting specifically helps in increasing blood flow and decreasing the symptoms of cyanosis in Tetralogy of Fallot, not just during tachycardia.
C. Squatting decreases arterial blood flow away from the heart: Squatting actually increases blood flow to the heart and lungs by increasing systemic vascular resistance.
D. Squatting increases the workload of the heart: Squatting helps reduce the workload on the heart in Tetralogy of Fallot by improving oxygenation and decreasing cyanosis.
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Related Questions
Correct Answer is D
Explanation
A. Used to treat inflammation and swelling: Furosemide (Lasix) does not treat inflammation. It is a diuretic used to reduce fluid retention (edema), not inflammation.
B. Used in the treatment of hypertension and dysrhythmias: Furosemide is primarily used in the treatment of hypertension and edema, not dysrhythmias.
C. Used in the treatment of cystic fibrosis to help break up thick secretions: Furosemide is not used for cystic fibrosis; it is a loop diuretic used for fluid retention and hypertension.
D. Used in the treatment of hypertension and edema: Furosemide (Lasix) is a loop diuretic that helps to reduce fluid buildup (edema) and lower blood pressure in conditions such as heart failure, chronic kidney disease, and hypertension.
Correct Answer is C
Explanation
A. Lack of adequate ventricle strength to pump blood to the body: While right ventricular hypertrophy is part of Tetralogy of Fallot, the primary cause of fatigue is inadequate oxygenation, not muscle strength.
B. Restricted blood flow leaving the heart: This contributes to low oxygen levels but isn’t the direct reason for fatigue; the issue lies in oxygen availability for metabolism.
C. Inadequate oxygenation for supporting energy metabolism: The structural defects cause reduced oxygen delivery to tissues, leading to fatigue during activities like feeding.
D. Increased circulation pressure to the lungs: Pulmonary stenosis reduces blood flow to the lungs, but this doesn’t directly explain fatigue from eating.
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