Medical MCQ-A 36 year old female is found to have a large pituitary mass on MRI imaging. She underwent transsphenoidal hypophysectomy. Postop replacement of which of the following hormone is not needed?

A 36 year old female is found to have a large pituitary mass on MRI imaging. She underwent transsphenoidal hypophysectomy. Postop replacement of which of the following hormone is not needed?

L-Thyroxine

Estradiol

Glucocoicoids

Mineralocoicoids

Question Category:

Physiology

Correct Answer:

Mineralocoicoids

Description:

Aldosterone is majorly regulated by K+ & plasma volume The following factors play essential roles in aldosterone regulation: 1. | K+ concentration in ECF - | Aldosterone 2. | Angiotensin concentration in ECF - | Aldosterone3. | Na++ in ECF - decreases aldosterone very slightly4. ACTH from anterior pituitary - necessary for aldosterone sec but has little effect on controlling the rate of secretion in most physiological conditions. ACTH appears to play a permissive role in regulation of aldosterone of these, K+ ion conc. & RAAS are the most potent in regulating aldosterone secretion. Regulated by Hormone TSH Thyroid FSH Estrogen ACTH Glucocoicoids

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