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KMID : 1131320150170010147
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Journal of Korean Society of Computed Tomographic Technology
2015 Volume.17 No. 1 p.147 ~ p.156
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Analysis of Rectal Tip Efficiency by Targeting Patient for Whom Examination by CT Colonography Catheter is Difficult Due to Weak Anal Sphincter
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Kim Yeong-Nam
Son Eun-Young
Bae Sung-Keun
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Abstract
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Purpose : This study was intended to explore efficiency of computed tomographic colonography (CTC) exam by employing rectal tip that is used for double contrast barium enema (DCBE) by targeting the patient for whom CTC catheter exam is difficult.
Materials and methods : From March, 2013 to February, 2014, CTC exam was performed by employing rectal tip that is used for DCBE by targeting 34 patients (18 men, 16 women: mean age respectively, 79 and 77 years) for whom CTC catheter exam is difficult. As exam equipment, 16 MDCT (Somatom Sensation16, Siemens, Germany) and Automatic CO2 Insufflator (E.Z. EM, Inc. USA) were used. As an exam method, whether rectal tip escapes out of anus by injecting CO2 gas under supine and prone position by employing rectal tip for the patients for whom CTC catheter exam is difficult and rectal tip is useful for CTC exam while rectal pressure of automatic CO2 insufflator is maintained and colorectal distention works well was explored.
Results : For 31 patients(91%) among 34 persons who underwent CTC exam by rectal tip, observation from rectum to ileocecal valve was possible under balanced rectal pressure and for 3 patients(9%), as rectal tip balloon escaped out from anus, CTC exam could be substituted by using compression bandage to thigh. In an exam using rectal tip contrary to a case of using CTC catheter, efficiency of exam could be confirmed for all 34 patients as thick catheter held weak part of anal sphincter and rectal tip with large balloon complemented the part where gas is discharged out of anus.
Conclusion : It could be confirmed that exam efficiency and accuracy of rectal tip was enhanced for the patients for whom CTC exam was difficult as anal sphincter is weak and CO2 gas is discharged out. In this hospital, rectal tip is used for the patients for whom CTC exam is difficult and it is considered that this method could be also usefully applied to other hospitals where CTC catheter is used.
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KEYWORD
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computed tomographic colonography catheter, rectal tip, anal sphincter
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