Figure 2

LH surge of 7 female patients (mean ± SD). The LH surge was significantly delayed in the nimodipine cycle 2 in comparison to observatory cycle 3 (mean 15.1 ± 3.5 days vs 13.1 ± 2.4 days, p = 0.044). Among the eight patients, one patient had an anovulatory 3rd cycle and did not have a positive LH surge. **Comparisons of LH surge day between cycles were performed using paired t-tests.