Laser Assisted Hatching (AH) in San Diego


Assisted Hatching is a procedure where an artificial opening is made in the zona pellucida of the embryo.

Advance maternal age

The embryo is surrounded by a protein shell called the zona pellucida. A portion of this shell must dissolve for the embryonic cells to escape or “hatch.” Only after “hatching” can the embryo then attach, or implant to the lining of the uterus in order to establish a pregnancy. Possible reasons for implantation failure could include the inability of the embryo to “hatch” out of its shell.

How is Laser Assisted Hatching done?

The goal of this is to assist the embryo in breaking out of its shell to facilitate implantation to the uterine lining. Assisted hatching has traditionally been performed by acid digestion of the zona pellucida. At Fertility Institute of San Diego, we use the latest cutting-edge laser technology to provide our patients with what we believe is the fastest, safest and most uniform method of performing assisted hatching. This involves using a laser to make a tiny hole in the zona pellucida and takes only a few seconds per embryo thereby minimizing the time they are out of the incubator. It also does not expose the embryos to the potential deleterious effect of the acid digestion.

Who would benefit from Assisted Hatching?

Some of the patients who would benefit from assisted hatching include:

  • Women 38 years or older.
  • Patients with poor egg quality.
  • Patients with poor embryo quality as evidenced by slow growth or excessive fragmentation.
  • Patients with previous failed IVF cycles.
  • Patients undergoing FET (frozen embryo transfer).

What are the risks of Assisted Hatching?

Present research suggests that the risks to the embryos are minimal with this method of assisted hatching. There appears to be an increased risk of monozygotic twinning (MZT), where the embryo splits resulting in a set of identical twins.

For more information on assisted hatching book a free fertility consultation with our IVF and fertility specialist, Dr. Minoos Hosseinzadeh.


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9850 Genesee Ave #300,
La Jolla, CA 92037, USA




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