Transurethral bladder catheterization (TUBC) Dr. Mohamed Haseen Basha Assistant professor ( Paediatrics) Faculty of Medicine Al Maarefa College of Science and Technology

Indications obtaining and processing urine samples in children in suspected case of UTI

Contraindications Blood Trauma

Procedure The catheterization of the urethra is another safe and effective method for obtaining urine samples for culture in most infants and children. The procedure can be difficult in uncircumcised boys who may need to have suprapubic aspiration if the urethral meatus cannot be identified.

An explanation of the anatomy and the indications for the procedure should be given to parents and caregivers before transurethral bladder catheterization is performed to avoid unnecessary parental anxiety about the manipulation of their child's genitals. In addition, whether the child has a latex allergy must be determined because the condition is common in children with spina bifida and other conditions that require frequent bladder catheterization.

The following steps are performed: The child is restrained in the supine and frog leg position. This position permits adequate stabilization of the pelvis and complete visualization of the external genitalia. The anterior urethra is cleansed thoroughly with povidone-iodine solution. A sterile lubricant jelly is applied to the end of an appropriately sized catheter (5 French for children younger than 6 months; 8 French for those between 6 months and adolescence, and 10 French for adolescents).

Infant/child should not have voided within 1 hour of procedure. Prepare the urethral opening using sterile technique. In males, apply gentle traction to the penis to straighten the urethra. In uncircumcised male infants, expose the meatus with gentle retraction of the foreskin. The foreskin has to be retracted only far enough to visualize the meatus.

Gently insert a lubricated catheter into the urethra Gently insert a lubricated catheter into the urethra. Slowly advance catheter until resistance is met at the external sphincter. Continued pressure will overcome this resistance, and the catheter will enter the bladder. In boys, insert a few centimeters longer than the shaft of the penis. In girls, the urethral orifice may be difficult to visualize, but it is usually immediately anterior to the vaginal orifice. Only a few centimeters of advancement is required to reach the bladder in girls.

Carefully remove the catheter once specimen is obtained, and cleanse skin of iodine. If indwelling Foley catheter is inserted, inflate balloon with sterile water as indicated on bulb, then connect catheter to drainage tubing attached to urine drainage bag. Secure catheter tubing to inner thigh.

Complications of Catheterization  Minor complications Microscopic hematuria Major complications Gross hematuria Anterior abdominal wall abscess, Intestinal perforation

Suprapubic bladder aspiration (SPA)

Procedure The child is restrained in the supine and frog leg position. This position permits adequate stabilization of the pelvis . The site for needle insertion, in the midline, approximately one to two centimeters above the pubic symphysis, is widely prepared with povidone iodine solution. The planned puncture site may be locally anesthetized with lidocaine. Many practitioners do not perform this step because they believe it is more painful than the procedure itself.

The urethral opening should be occluded just before needle insertion because the procedure will stimulate urination in many children. This is accomplished by squeezing the penile urethra in boys or applying urethral pressure to the meatus in girls . A 1.5 inch, 22-gauge needle attached to a 5 mL syringe is inserted one to two centimeters above the pubic symphysis. The needle should be angled 10 to 20 degrees cephalad and advanced under negative pressure until urine returns .

The needle should be partially withdrawn and redirected at an angle more perpendicular to the frontal plane if the initial attempt is unsuccessful. Urine is not likely to be obtained after the third attempt . Thus, one can either perform transurethral bladder catheterization or wait 15 to 30 minutes for the bladder to become more distended.

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