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Related Concept Videos

Shunt Admittances01:26

Shunt Admittances

Shunt admittances play a crucial role in the analysis of transmission lines, particularly for three-phase systems with neutral conductors. When a uniformly charged conductor is positioned above the Earth, it induces an equal but opposite charge on its surface. This interaction creates electric field lines between the conductor and the Earth.
To model this effect, the method of images is employed. This method involves replacing the Earth with an image conductor that mirrors the original...

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Neuronavigation and Laparoscopy Guided Ventriculoperitoneal Shunt Insertion for the Treatment of Hydrocephalus
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Shunt insertion in the summer: is it safe?

John R W Kestle1, D Douglas Cochrane, James M Drake

  • 1Department of Neurosurgery, Primary Children's Medical Center, University of Utah, Salt Lake City, Utah 84113, USA. john.kestle@hsc.utah.edu

Journal of Neurosurgery
|September 15, 2006
PubMed
Summary

The "July effect" may slightly increase complications in pediatric cerebrospinal fluid shunt surgery. Vigilance and supervision are crucial when new medical staff begin in July.

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Shunt Surgery, Right Heart Catheterization, and Vascular Morphometry in a Rat Model for Flow-induced Pulmonary Arterial Hypertension

Published on: February 11, 2017

Area of Science:

  • Neurosurgery
  • Pediatric Surgery
  • Healthcare Management

Background:

  • The
  • July effect,
  • a phenomenon where patient outcomes worsen with the arrival of new medical residents in July, is not well-documented in neurosurgery.
  • Pediatric cerebrospinal fluid (CSF) shunt surgery is a common procedure with potential complications.

Purpose of the Study:

  • To investigate whether the
  • July effect
  • impacts complication rates in pediatric CSF shunt surgery.

Main Methods:

  • A multicenter study compared outcomes of pediatric CSF shunt surgeries performed in July/August versus the rest of the year.
  • Data from a hydrocephalus clinical trials database and Canadian hospital records were analyzed.
  • Outcomes included shunt failure, infection, neurological deficits, wound complications, and death, analyzed using chi-square tests, means, and survival analysis.

Main Results:

  • While not statistically significant in all analyses, trends suggested higher rates of shunt infection (13.8% vs. 8.8%) and wound dehiscence (2.9% vs. 0.7%) in July/August.
  • A significant advantage for shunt survival and infection rates was observed for surgeries performed between September and June (p = 0.008).

Conclusions:

  • A small
  • July effect
  • may influence some outcomes in pediatric CSF shunt surgery.
  • Continued vigilance and supervision of new medical staff by attending surgeons are recommended to mitigate potential morbidities and costs.