USMLE STEP 1 PHARMACOLOGY MEDICAL EXAMINATION QUESTIONS AND ANSWERS (VERIFIED ANSWERS) GRADED A
USMLE STEP 1 PHARMACOLOGY MEDICAL EXAMINATION QUESTIONS AND ANSWERS (VERIFIED ANSWERS) GRADED A Norepinephrine vs. isoproterenol -Norepinephrine increases systolic and diastolic pressures as a result of α1-mediated vasoconstriction causing increased in mean arterial pressure and reflex bradycardia. -However, isoproterenol (no longer commonly used) has little α effect but causes β2-mediated vasodilation, resulting in decreased mean arterial pressure and increased heart rate through β1 and reflex activity.
Written for
- Institution
- USMLE STEP 1 PHARMACOLOGY
- Course
- USMLE STEP 1 PHARMACOLOGY
Document information
- Uploaded on
- April 21, 2024
- Number of pages
- 35
- Written in
- 2023/2024
- Type
- Exam (elaborations)
- Contains
- Questions & answers