HY USMLE Q #1057 – Cardiovascular

A 34-year-old woman comes to the physician for a follow-up examination after a blood pressure measurement 2 weeks ago was 150/100. Today, blood pressure is again 150/100. She sometimes experiences headaches. She takes a combined oral contraceptive pill. She smokes one pack of cigarettes daily. Laboratory studies show:

Sodium                                                                            143 mEq/L
Potassium                                                                      3.1 mEq/L
Bicarbonate                                                                  28 mEq/L

Which of the following is the most likely diagnosis?

  Adverse effect of medication
  Compensatory cortisol hypersecretion
  Essential hypertension
  Mineralocorticoid excess
  Pheochromocytoma