Follicular re-aspiration yielded similar oocyte recovery compared to direct aspiration (RR: 0.7; 95%CI: −0.9, 2.4; p=0.38), but entailed a longer procedure time (180 seconds; p<0.001) among low responding patients.
A randomized comparison trial was performed to evaluate whether follicular re-aspiration using a double-lumen retrieval needle improves oocyte recovery when compared to direct follicular aspiration among low responding ART patients. There were no differences observed in the number of oocytes retrieved (single-lumen: 6.5±2.2 oocytes, double-lumen: 7.2±2.3 oocytes; p=0.38); while follicular re-aspiration with the double-lumen retrieval needle resulted in a 2-fold increase in procedure time (p<0.001).
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