Which procedure involves inserting a needle directly into the bladder through the abdominal wall to collect urine?

Which procedure involves inserting a needle directly into the bladder through the abdominal wall to collect urine?

• A. Voiding
• B. Cystocentesis
• C. Catheterization
• D. Expressing the bladder

Answer: (B)

Accessing urine by inserting a needle directly into the bladder through the abdominal wall is cystocentesis. This method obtains a urine sample directly from the bladder using a sterile needle, which minimizes contamination from the urethra or外 genital tract—crucial when a culture is needed. It’s typically done under sterile technique, often with the animal sedated or anesthetized, and can be guided by palpation or ultrasound in challenging cases. Risks include bladder puncture or leakage, infection, and hematuria, but when a sterile sample is required, cystocentesis is the preferred approach. In contrast, voiding is simply letting the animal urinate, which doesn’t involve needle access and can yield a contaminated sample. Catheterization uses a tube inserted through the urethra into the bladder to drain urine, which can also contaminate the sample and is a different technique with its own indications. Expressing the bladder involves manually pressing on the abdomen to express urine, not accessing the bladder with a needle.

Accessing urine by inserting a needle directly into the bladder through the abdominal wall is cystocentesis. This method obtains a urine sample directly from the bladder using a sterile needle, which minimizes contamination from the urethra or外 genital tract—crucial when a culture is needed. It’s typically done under sterile technique, often with the animal sedated or anesthetized, and can be guided by palpation or ultrasound in challenging cases. Risks include bladder puncture or leakage, infection, and hematuria, but when a sterile sample is required, cystocentesis is the preferred approach.

In contrast, voiding is simply letting the animal urinate, which doesn’t involve needle access and can yield a contaminated sample. Catheterization uses a tube inserted through the urethra into the bladder to drain urine, which can also contaminate the sample and is a different technique with its own indications. Expressing the bladder involves manually pressing on the abdomen to express urine, not accessing the bladder with a needle.