Sargent M A, Wilson B P
Department of Radiology, Booth Hall Children's Hospital, Manchester, UK.
Pediatr Radiol. 1991;21(5):346-9. doi: 10.1007/BF02011483.
The hydrostatic pressures and flow rates of barium sulphate and water soluble contrast in concentrations representative of those used for intussusception reduction were measured. The change of height with discharge of fluid from the filled kit was also assessed. A group of experienced paediatric radiologists and radiographers significantly underestimated the height to which contrast should be placed for intussusception reduction. The results indicate that baseline hydrostatic reduction pressures tend to be less and maximum pressures significantly less than those presently advocated for pneumatic reduction. This disparity may account for the apparent improvement in intussusception reduction rates reported for air enema when compared with barium enema. Intraluminal pressure monitoring during contrast enema would aid control of intussusception reduction but hydrostatic reduction would still be at a disadvantage because of lower flow rates. Where hydrostatic reduction is performed, the contrast density and height used should be set to give known pressure, according to local guidelines.
测量了硫酸钡和水溶性造影剂在用于肠套叠复位的代表性浓度下的流体静压和流速。还评估了从充满造影剂的套件中排出液体时高度的变化。一组经验丰富的儿科放射科医生和放射技师显著低估了肠套叠复位所需造影剂应放置的高度。结果表明，基线流体静压复位压力往往较低，最大压力明显低于目前推荐的用于气体灌肠复位的压力。与钡灌肠相比，这一差异可能解释了空气灌肠肠套叠复位率明显提高的原因。造影剂灌肠期间的腔内压力监测将有助于控制肠套叠复位，但由于流速较低，流体静压复位仍将处于劣势。在进行流体静压复位的地方，应根据当地指南设置所用造影剂的密度和高度，以获得已知压力。
