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Table 1 Monitoring chart given to patients: mock chart completed

From: Nimodipine, a calcium channel blocker, delays the spontaneous LH surge in women with regular menstrual cycles: a prospective pilot study

Cycle Day 10 Day 11 Day 12 Day 13 Day 14 Day 15
1 LH - LH - LH - LH +   
2   Nimodipine Nimodipine Nimodipine Nimodipine  
Expected LH surge
LH - LH - LH - LH - LH - LH +
3 LH - LH - LH - LH +   
  1. Nimodipine was taken 2 days before the expected LH surge as determined by the 1st menstrual cycle and continued for a total of 4 days. In this mock patient, the LH surge was noted on Day 13 during the first and third cycle, but on Day 15 during the second (nimodipine) cycle.