{"id":8645,"date":"2019-08-08T10:10:29","date_gmt":"2019-08-08T08:10:29","guid":{"rendered":"https:\/\/medifactia.com\/?page_id=8645"},"modified":"2021-09-12T20:49:11","modified_gmt":"2021-09-12T19:49:11","slug":"reading-the-results","status":"publish","type":"page","link":"https:\/\/new.medifactia.com\/us\/reading-the-results\/","title":{"rendered":"Reading the results"},"content":{"rendered":"

Reading the results<\/h1>
<\/div><\/div><\/div>
\n

Arrange a plain abdominal X-ray on day seven to determine the location and extent of the radiopaque markers. The distribution of markers in the various segments can provide information about the type of delay (see Figure 1). The most commonly used principle in Scandinavia, but also very common outside Scandinavia is to divide the colon into four segments, i.e. cecum-ascending colon, transverse colon, descending colon and sigmoid colon-rectum.<\/p>\n<\/div><\/section>
\n

Calculation<\/h2>
<\/div><\/div><\/div>
\n

Colonic transit time is calculated as the mean oro-anal transit time (OATT) for the daily marker doses swallowed. With a daily dose of ten (10) markers, the transit time in days is M divided by 10, i.e. the number of markers counted from the X-ray film (M) divided by the daily dose. With ten (10) markers per day, each marker is equivalent to 0.1 days or 2.4 hours (i.e. 2.4 hrs. per marker). The formula Number of markers X 2.4 can be used on total and segmental transit time for clinics that prefer a result in hours. A different shape of the markers is used on day six to assist in localization of cecum in patients with slow transit. The division of the day 6-dose into a morning and an evening dose will enhance precision in measuring rapid transit.<\/p>\n<\/div><\/section><\/p><\/div>\n

<\/span><\/span><\/div>
\n
<\/div><\/div><\/div>
\n

Schematic figure: Female patient with 27 markers in the colon (10 tube, 17 ring formed). Transit-time is 2.7 days, i.e. normal.<\/em><\/p>\n<\/div><\/section><\/p><\/div>

Interpretation<\/h2>
<\/div><\/div><\/div>
\n

Both total transit and segmental transit dysfunction in the colon can be evaluated. A numerical transit time value can be given if the number of retained markers is in the range 3\u201355 markers. Thus, at least half a daily dose should be excreted and at least half of the evening dose on day six must be retained. If the number of retained markers is only 0\u20132, the transit time is less than 0.3 days. If 56\u201360 markers are retained, the transit time is more than 5.5 days (an equilibrium has not been reached).<\/p>\n<\/div><\/section>
\n

<\/div><\/div><\/div>
\n

Figure 1: Measurement of colonic transit time with radiopaque markers. A Transit-Pellet test in a female patient who ingested 10 markers daily for 6 days. The plain abdominal radiograph taken on day 7 demonstrates that 55 markers are retained. Thus, colonic transit time is 5.5 days. The markers are evenly distributed throughout the colon; the results indicate slow-transit constipation. Upper reference value is 4.0 days for women and 2.2 days for men. (Source: Medifactia).<\/em><\/p>\n<\/div><\/section><\/p><\/div><\/p>\n

Result in days<\/h2>
<\/div><\/div><\/div>
\n

Colonic transit time (OATT); reference values<\/h3>
<\/div><\/div><\/div>
\n
<\/a><\/div><\/div><\/div>
\n

Normal transit time corresponds to the range from percentile 5 to percentile 95 in the control material. Reference values based on 199 subjects: 1) Abrahamsson et al, Scand J Gastroenterol 1988 Suppl 152:72-80; 2) Sadik et al, Scand J Gastroenterol 2003, 38:36-42; 3) T\u00f6rnblom et al, data on file, Gastrointest Lab, Sahlgrenska University Hospital.<\/em><\/p>\n<\/div><\/section>
\n

Segmental transit time; upper reference values<\/h3>
<\/div><\/div><\/div>
\n
<\/a><\/div><\/div><\/div>
\n

Segmental transit times: Abrahamsson et al, Scand J Gastroenterol 1988 Suppl 152:72-80. Percentile 95 calculated per segment in healthy subjects.<\/em><\/p>\n<\/div><\/section><\/p><\/div>\n

Result in hours<\/h2>
<\/div><\/div><\/div>
\n

Colonic transit time (OATT); reference values<\/h3>
<\/div><\/div><\/div>
\n
<\/a><\/div><\/div><\/div>
\n

Normal transit time corresponds to the range from percentile 5 to percentile 95 in the control material. Reference values based on 199 subjects: 1) Abrahamsson et al, Scand J Gastroenterol 1988 Suppl 152:72-80; 2) Sadik et al, Scand J Gastroenterol 2003, 38:36-42; 3) T\u00f6rnblom et al, data on file, Gastrointest Lab, Sahlgrenska University Hospital.<\/em><\/p>\n<\/div><\/section>
\n

Segmental transit time; upper reference values<\/h3>
<\/div><\/div><\/div>
\n
<\/a><\/div><\/div><\/div>
\n

Segmental transit times: Abrahamsson et al, Scand J Gastroenterol 1988 Suppl 152:72-80. Percentile 95 calculated per segment in healthy subjects.<\/em><\/p>\n<\/div><\/section>
\n

Application of the result<\/h2>
<\/div><\/div><\/div>
\n