Objective: Comparison of two transfer catheters in an IVF program. Design: Prospective, randomized clinical study. Setting: A private tertiary care center for ART. Patient(s): 66 patients < 38 years of age undergoing IVF and/or ICSI. Intervention(s): Patients were randomly assigned to undergo ET using the Tomcat catheter (n = 32) or the TDT catheter (n = 34). Main Outcome Measure(s): Primary outcome measures were implantation and pregnancy rates. Secondary outcome measures were contamination with blood and/or mucus on the tip of the catheter, cramping or patient discomfort, and time required to complete ET. Result(s): Use of the Tomcat catheter resulted in significantly higher implantation (25.2% vs. 8.4%) and clinical pregnancy rates (47% vs. 14.7%) compared with the TDT catheter. All secondary outcome measures were similar for both catheters. Conclusion(s): The choice of ET catheter may affect the success of IVF-ET cycles. Use of the Tomcat catheter compared with the TDT catheter seems to result in significantly better efficiency of the ET procedure and is more cost effective. (C) 2000 by American Society for Reproductive Medicine.
- Embryo transfer
- In vitro fertilization
- Intracytoplasmic sperm injection
- TDT catheter
- Tomcat catheter