Name: Pre & Post Surgery

 

Abstract: A study was carried out involving twelve patients with aldosterone-producing adenomas (benign tumors) before and after adrenalectomy (surgical removal of one of the adrenal glands).  All patients had high blood pressure, took antihypertensive drugs, and showed a tendency toward hypernatraemia, an electrolyte disturbance that is defined by an elevated sodium level in the blood.  Profiles of these patients were taken at admission and two months after the operation.

 

Variables (column):

  1. SBP, Systolic blood pressure at admission
  2. DBP, Diastolic blood pressure at admission
  3. SNa, Serum Na concentration at admission
  4. SK, Serum K concentration at admission
  5. PAC, Plasma aldosterone concentration at admission
  6. SBP, Systolic blood pressure after removal of adrenal tumor
  7. DBP, Diastolic blood pressure after removal of adrenal tumor
  8. SNa, Serum Na concentration after removal of adrenal tumor
  9. SK, Serum K concentration after removal of adrenal tumor
  10. PAC, Plasma aldosterone concentration after removal of adrenal tumor

 

Possible Uses: Matched Pairs, Correlation, Linear Regression

 

References: Kimura et. al.  “Impaired Vasopressin Suppression and Enhanced Atrial Natriuretic Hormone Release Following an Acute Water Load in Primary Aldosteronism.”  European Journal of Endocrinology, 1997.

 

Levine, David, Patricia Ramsey, and Robert Smidt.  Applied Statistics for Engineers and Scientists.  Upper Saddle River, NJ: Prentice Hall 2001.