H2-receptor blockers:
a. block the enzyme H+, K+-ATPase
b. neutralize stomach acid
c. slow acid secretion
d. erradicate H. plylori
c. H2-receptor drugs reduce histamine-stimulated gastric acid secretion by competitively inhibiting H2-receptor on the parietal cells in the stomach.
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A 4-year-old female patient is having great difficulty breathing. She is responsive to verbal stimuli and has an open airway. Her respiratory rate is 40 breaths/min, and she has an SpO2 reading of 88%, which has dropped from 90% despite high-concentration oxygen through a pediatric nonrebreather mask. Her pulse is rapid, and her skin cool to the touch. As a knowledgeable EMT, you would recognize these findings as associated with which condition?
A) Respiratory distress B) Cardiopulmonary arrest C) Respiratory arrest D) Respiratory failure
The term "common cold" refers to
a. a bacterial infection of the upper respiratory tract. b. a nonbacterial infection of the upper respiratory tract. c. a bacterial infection of the lower respiratory tract. d. an infection with tuberculosis organisms.
Which of the following agents may compete with serum bilirubin for binding to albumin and may cause kernicterus?
A) chloramphenicol B) penicillin C) sulfonamide D) tetracycline
You will know that the third stage of labor has begun when:
A: the placenta has delivered. B: the mother's contractions become regular. C: the baby's head is visible at the vaginal opening. D: the entire baby has delivered.