When is IMSI and ICSI?

When are IMSI and PICSI Necessary? – Clinical Guide

What are IMSI and PICSI?

IMSI (Intracytoplasmic Morphologically Selected Sperm Injection) and PICSI (Physiological ICSI) are advanced laboratory techniques used to improve sperm selection.

What is IMSI?

IMSI is the selection of the morphologically best sperm by examining them under very high magnification (6000x+).

What is PICSI?

PICSI is a method where sperm are selected based on their ability to bind to hyaluronic acid. This characteristic is associated with sperm maturity and DNA quality.

When is IMSI Preferred?

• Severe morphological defects
• High DNA fragmentation
• Recurrent IVF failure
• Previous poor embryo development

When is PICSI Preferred?

• Suspected sperm DNA damage
• Recurrent miscarriages
• Unexplained infertility
• Moderate sperm quality

Advantages

• Better sperm selection
• Potential increase in embryo quality
• Increased pregnancy rates in some patients

Disadvantages

• Additional cost
• May not show significant benefit in all patients
• Limited evidence for standard use

Clinical Fact

IMSI and PICSI are not necessary for all routine patients. They may be beneficial in a selected patient group.

Which for Which Patient?

• Severe morphological problem → IMSI
• Functional quality / DNA problem → PICSI
• Recurrent failure → both can be considered

Conclusion

IMSI and PICSI are auxiliary techniques that optimize sperm selection. When used in the correct patient group, they can increase IVF success.