39 results
Feedback Loop: Prolactin (PRL)
 • PRL levels exhibit diurnal, menstrual, and age-related variation
 • TRH has
Feedback Loop: Prolactin ... Prolactin #PRL #FeedbackLoop ... pathophysiology #pituitary
Feedback Loop: Growth Hormone (GH)
Growth Hormone:
 • Liver -> GHR activates JAK-STAT pathway -> Incr IGF1
Feedback Loop: Growth ... GrowthHormone #GH #FeedbackLoop ... pathophysiology #pituitary
Menstrual Cycle Physiology: Ovarian Cycle – Ovulation Explained

Around Day 14, estrogen exerts sudden +++ positive feedback
sudden +++ positive feedback ... on the anterior pituitary ... negative to positive feedback ... and release LH causes
Menstrual Cycle Physiology: The Hypothalamic-Pituitary-Ovarian Axis
Estrogen, when released:
 • Negatively feeds back on the hypothalamus and
The Hypothalamic-Pituitary-Ovarian ... hypothalamus and anterior pituitary ... hypothalamus and anterior pituitary ... endocrinology #feedback
Pituitary Mass Effects - Pathogenesis and Clinical Findings
 • Pituitary turnors are almost always a benign
Pituitary Mass Effects ... Pituitary adenomas ... • For pituitary ... masses of all sizes ... Headaches • Nausea
Causes of Primary and Secondary Amenorrhea - Differential Diagnosis Algorithm
Primary Amenorrhea - No onset of menarche
Causes of Primary ... • Central - Pituitary ... estrogen: • Pituitary ... Prolactin • Pituitary ... Diagnosis #Algorithm #Causes
Considerations for Crystalloids - 0.9% NS vs LR vs Plasma-Lyte
 - Causes hyperkalemia?
 - Safe to
Plasma-Lyte - Causes ... - Causes lactic ... - Can cause a NAGMA ... per @kidney_boy feedback
Breast Discharge - Differential Diagnosis Algorithm
High Prolactin + Normal TSH
 • Microprolactinoma
 • Steroid Hormone Intake
Normal/ Low TSH • Pituitary ... Inhibition • Pituitary ... Endocrinology #Causes
Sellar / Pituitary Mass - Differential Diagnosis Algorithm
Adenoma - Primary Anterior Pituitary
 - Secreting
Sellar / Pituitary ... Primary Anterior Pituitary ... #SellarMass #Pituitary ... endocrinology #causes
Glucocorticoid-Induced Osteoporosis: Pathogenesis and Clinical Findings

 • Negative feedback on hypothalamus/pituitary, Decreasing ACTH -> Decr Sex
• Negative feedback ... on hypothalamus/pituitary