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A peritoneal marker for optimal timing of ventriculo-peritoneal shunt revision in early childhood
H Ninomiya1, T Yoshimine, M Maruno
1Department of Neurosurgery, Osaka University Medical School, Japan.
Insights
Ventriculo-peritoneal shunts require lengthening during childhood. A titanium clip marker aids in determining the peritoneal insertion level, optimizing revision timing for pediatric hydrocephalus management.
Area of Science:
- Neurosurgery
- Pediatric Surgery
- Medical Imaging
Background:
- Ventriculo-peritoneal shunts are crucial for managing pediatric hydrocephalus.
- Shunt revision is often necessary due to peritoneal tube shortening.
- Accurate assessment of peritoneal shunt length is challenging.
Purpose of the Study:
- To develop a method for accurately determining the peritoneal insertion level of ventriculo-peritoneal shunts in infants.
- To establish optimal timing for shunt revisions.
- To improve management of pediatric hydrocephalus.
Main Methods:
- A titanium clip was affixed to the peritoneal suture line in three infants.
- Abdominal X-rays were used to visualize the clip and shunt insertion level.
- The length of the intraperitoneal (i.p.) portion of the shunt was measured over time.
Main Results:
- The titanium clip clearly marked the peritoneal insertion level on abdominal X-rays in all patients.
- Accurate measurement of the i.p. shunt length was achieved.
- The i.p. shunt length shortened by 20-27% of the increase in body height (BH).
Conclusions:
- Titanium clips provide a reliable method to mark shunt insertion depth.
- This technique facilitates accurate determination of i.p. shunt length.
- It enables precise planning for optimal shunt revision timing in pediatric patients.
Abstract:
The ventriculo-peritoneal shunt placed in a neonate or infant needs revision to lengthen the peritoneal tube at certain times during childhood. The critical time for this revision is not exactly the same between individuals. Furthermore, the level of peritoneal insertion of the shunt tube is often unclear on x-ray films. To plan for and determine the optimal timing of revision, we applied a titanium clip on the peritoneal suture line in three infants as a marker of peritoneal insertion level. During the 31- to 37-month follow-up period, abdominal x-ray clearly demonstrated the peritoneal insertion level in all three patients, allowing accurate determination of the length of the intraperitoneal portion (i.p.) of the shunt tube. The rate of shortening of the length of i.p was 20 to 27% of the increase in body height (BH). This technique allows accurate determination of the length of i.p. and also optimal timing for revision.