Popliteal sinus venipuncture in anurans.

Area of Science:

• Herpetology
• Veterinary Medicine
• Comparative Physiology

Background:

• Common anuran blood collection methods, such as ventral abdominal vein venipuncture, lingual venous plexus sampling, and cardiocentesis, can be technically challenging.
• These traditional techniques may require chemical restraint and carry inherent risks to the patient's well-being.

Purpose of the Study:

• To demonstrate an underutilized, reliable, and technically simple anuran venipuncture technique.
• To highlight the use of the popliteal sinus for blood collection in amphibians.

Main Methods:

• Manual restraint of medium to large anuran species (> 30 g).
• Caudo-medial approach to the stifle joint using a 25- to 27-G needle.
• Collection of blood from the popliteal sinus with negative pressure, avoiding lymphatic contamination.

Main Results:

• Popliteal sinus venipuncture is a safe and easily performed procedure in anurans.
• The technique requires only manual restraint, eliminating the need for chemical sedation.

Conclusions:

• Popliteal sinus venipuncture offers a reliable and technically simple alternative for anuran blood collection.
• This method is safer than traditional techniques, especially when chemical restraint is not feasible or desired.