A premature infant is suspected of having persistent pulmonary hypertension of the newborn. How is this diagnosis confirmed?
a. Arterial blood gas analysis
b. Chest radiography
c. Pulmonary angiography
d. Echocardiography
e. Cardiac catheterization
D
The diagnosis of PPHN should always be suspected in any infant with nonresponsive or ongoing hypoxemia and cyanosis that is out of proportion to the degree of pulmonary disease, oxygen requirement, and mean airway pressure support. The diagnosis of PPHN is confirmed by echocardiography. When PPHN is present, echocardiography demonstrates normal structural cardiac anatomy with evidence of pulmonary hypertension (e.g., flattened or displaced ventricular septum). Doppler studies show right-to-left shunting through the patent ductus arteriosus and/or foramen ovale.
You might also like to view...
By the early 1970s, 10 percent of all prescriptions were compounded
Indicate whether the statement is true or false
You are assessing a 55-year-old male complaining of chest pain and have determined that his radial pulse is barely palpable. You also determine that there were 20 pulsations over a span of 30 seconds. Based on this, how would you report this patient's pulse?
A) Pulse 20 and weak B) Pulse 40 and weak C) Pulse 40, weak, and irregular D) Pulse 20, weak, and regular
Dry chemical agent primarily extinguishes fire by preventing the chemical reactions involving heat, fuel, and oxygen, and halts the production of __________________
a. fire-sustaining free radicals b. carbon dioxide c. silica compounds d. metal hydrides
Which of the following are the membranes that protect the brain and spinal cord?
A. Meninges B. Dermatomes C. Neurotransmitters D. Interneurons E. Ganglia