07-20-2012, 07:39 AM
A teenage boy is seen at the office of a dental surgeon for extraction of an impacted wisdom tooth. He is so nervous that the dentist decides to administer a sedative to calm the boy. After intravenous administration of the sedative , the boy relaxes and the extraction is accomplished with no complications.
However, when the boy stands up from the dental chair, he turns very pale and faints. Lying on the floor, he rapidly regains consciousness, but has a rapid heart rate of 120 bpm and a blood pressure of only 110/70 mm Hg. When he sits up, his heart rate increases to 140 bpm, his pressure drops to 80/40 mm Hg, and he complains of faintness.
the above case scenario explains
A Alpha 2 antagonism
B beta -1 antagonism
C beta - 2 agonism
D Alpha -1 antagonism
However, when the boy stands up from the dental chair, he turns very pale and faints. Lying on the floor, he rapidly regains consciousness, but has a rapid heart rate of 120 bpm and a blood pressure of only 110/70 mm Hg. When he sits up, his heart rate increases to 140 bpm, his pressure drops to 80/40 mm Hg, and he complains of faintness.
the above case scenario explains
A Alpha 2 antagonism
B beta -1 antagonism
C beta - 2 agonism
D Alpha -1 antagonism
