A 15-year-old female reports fainting at school in class on two occasions. The adolescent’s orthostatic blood pressures are normal. The primary care pediatric nurse practitioner suspects a cardiac cause for these episodes and will order which tests before referring her to a pediatric cardiologist?
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The stars in the Milky Way Galaxy
The stars in the Milky Way Galaxy
What is the classification for a spiral galaxy with a small…
What is the classification for a spiral galaxy with a small nuclear region and loosely wound arms?
In cosmology, what is the “inflationary period”?
In cosmology, what is the “inflationary period”?
At an age of 380,000 years, the temperature of the universe…
At an age of 380,000 years, the temperature of the universe had fallen to 3000 K, and electrons could then combine with protons to produce neutral hydrogen gas. What major transition took place in the universe at this time?
What is an SBc galaxy?
What is an SBc galaxy?
Infants with congenital CMV need routine screening throughou…
Infants with congenital CMV need routine screening throughout childhood to evaluate for which of the following?
The expansion of the universe takes place
The expansion of the universe takes place
Recent results from very bright supernovae in very distant g…
Recent results from very bright supernovae in very distant galaxies indicate that the expansion of the universe
In relation to the universe, what does “isotropy” mean?
In relation to the universe, what does “isotropy” mean?