Rex D K, Hast J L, Lehman G A, Mathis J, Elmore M
Department of Medicine, Indiana University School of Medicine, Indianapolis.
Am J Gastroenterol. 1988 Feb;83(2):151-4.
Circumferentially sensitive microtransducer probes are commercially available for use in esophageal manometry, and may offer an advantage over radially sensitive microtransducer probes in sphincters with radial asymmetry. In order to compare performance of the two probes, we performed esophageal manometry in 30 healthy adult volunteers with both probes. In only three of 52 manometric parameters measured were differences between mean values for the two probes statistically significant. Intrasubject variability was significantly (p = less than 0.005) less with the circumferentially sensitive probe (coefficient of variation 37% vs. 53%).
周向敏感微型换能器探头在市场上可用于食管测压，对于存在径向不对称的括约肌，它可能比径向敏感微型换能器探头具有优势。为了比较这两种探头的性能，我们使用这两种探头对30名健康成年志愿者进行了食管测压。在测量的52个测压参数中，只有3个参数两种探头的平均值差异具有统计学意义。周向敏感探头的受试者内变异性显著更低（p<0.005）（变异系数分别为37%和53%）。
