Clinical Embryology Techniques

Identify forward progressive sperm motility and straight path as independent predictors of fertility, using CASA to measure motility, linearity, and mean velocity.

Zona pellucida thickness variation links to embryo viability, and automated image analysis provides quantitative, objective evaluation to improve IVF embryo selection and pregnancy outcomes with a thinner zona pellucida.

IMSI, or intracytoplasmic morphologically selected sperm injection, selects morphologically normal sperm at high magnification before Icsi to improve fertilization and embryo development compared with traditional Icsi.

Explain the PICSI principle of selecting mature sperm by hyaluronan binding in a dish to emulate natural fertilization, and review limitations and evidence on live birth outcomes.

Time lapse systems (TLS) continuously image embryos during incubation, allowing quality assessment without removing them, preserving the culture environment and aiding embryo selection for ART, though at added cost.

Explore essential semen analysis terminologies used in clinical embryology, including oligospermia, asthenozoospermia, teratozoospermia, and azoospermia. Learn about related conditions such as hypospermia and hyperspermia.

Sperm capacitation is a natural post-ejaculation process enabling fertilization by motility changes and acrosome-ready membranes, with in vitro washing, density gradient or swim-up to yield motile sperm for art.

Identify sperm selection methods after IVF, including hyaluronic acid binding for mature sperm and annexin V–based magnetic sorting, plus birefringence, electrophoresis, and density gradient or swim-up techniques.

Use intrauterine insemination to aid pregnancy with donor sperm, address unexplained infertility, endometriosis, or mild male factor, and bypass the cervix by placing sperm directly into the uterus.

Identify essential IVF laboratory equipment and conditions, including incubators with CO2 and pH control, laminar flow, micromanipulation systems, cryopreservation, sterilization, and rigorous maintenance.

Quality control and quality assurance in the IVF laboratory ensure equipment and materials function, monitor temperature, pH, and osmolarity of culture media, and support protocol optimization to help infertile couples.

Maintain CO2 incubators by monitoring CO2 and temperature, keeping logs, and cleaning and decontaminating. Manage water for humidity, perform sperm survival tests, and rely on maintenance contracts and backup power.

Master sterile culture conditions for IVF labs, emphasizing cleanliness, incubator upkeep, non-toxic disinfectants like hydrogen peroxide, aseptic handling, and meticulous labeling to prevent sample mix-ups.