Which of the following substances is not likely to cross a placenta?
A. An ionized or water-soluble substance
B. Tetracycline
C. Nicotine
D. Alcohol
a
Rationale: Ionized or water-soluble substances are not likely to cross the placenta. The "placental barrier" usually allows fat-soluble chemicals to cross.
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Assessment of a newborn indicates that she has slow and irregular respirations with a weak cry. You should award her how many points according to the APGAR scoring system?
A) 0 B) 1 C) 2 D) 3
The normal time interval for the third stage of labor is up to 30 minutes.
Answer the following statement true (T) or false (F)
A 40-year-old woman presents with multiple melanotic macules of her lips and buccal mucosa. If the patient is found to have adrenal insufficiency, which of the following conditions should be considered?
a. von Recklinghausen's disease of skin b. McCune-Albright syndrome c. Addison's disease d. Peutz-Jeghers syndrome e. None of the above
Which of the following toxic gases is produced by burning refrigerants?
A. carbon dioxide B. hydrogen cyanide C. nitrogen dioxide D. phosgene