Low-dose anesthesia for corneal transplantation in mice

Area of Science:

• Veterinary Medicine
• Surgical Anesthesiology
• Ophthalmology

Background:

• Murine keratoplasty presents technical challenges due to small dimensions.
• Scientific and economic factors drive research in mouse corneal transplantation models.
• Delicate surgical procedures necessitate stable anesthesia and swift postoperative recovery.

Purpose of the Study:

• To develop and evaluate an anesthesia protocol for murine keratoplasty.
• To address the need for stable anesthesia and rapid waking in small animal surgery.
• To optimize anesthetic delivery for delicate ocular procedures in mice.

Main Methods:

• Mice received intraperitoneal injections of xylazine and ketamine hydrochloride at reduced doses.
• Inhalation anesthesia with isoflurane was employed for supplemental anesthesia and short interventions.
• A custom apparatus was designed to manage isoflurane delivery in a closed system, visualizing anesthetic escape.

Main Results:

• The combined anesthesia approach allowed for significant reduction in systemic anesthetic dosage.
• The developed apparatus proved easy to handle and effective in monitoring isoflurane delivery.
• Stable anesthesia and rapid postoperative waking were achieved in the murine model.

Conclusions:

• The described anesthesia model facilitates complex procedures like corneal transplantation in mice.
• This method supports the advancement of research utilizing the murine keratoplasty model.
• The technique offers a practical solution for surgeons performing delicate surgeries in small animals.