Indication
Suspected pathology in the colon.
Procedure
The examination requires bowel preparations such as cleansing enema before the study. During the examination, contrast medium (containing barium compounds) is introduced into the large bowel via a rectal catheter. A series of X-rays are then taken. The examination is performed by a radiologist. This is an unpleasant examination. Some patient may experience abdominal pain during the introduction of air and contrast agent. Inform the radiologist as soon as possible if you feel any pain.
Possible Complications of Use of Contrast Medium
1. Abdominal discomfort due to distension of the large bowel by gas and contrast
media.
2. Perforation of bowel.
3. Venous intravasation of contrast.
(Complications 2 & 3 may occur only in patients with critical bowel
lesions and the incidence is very low)
Patient Preparation
1. Patient should follow the instructions for bowel preparation as good quality
films largely depend on adequate bowel preparation.
a) Maintain a low residual diet (i.e. one restricted to bread, potatoes, rice
and other starchy foods, but no vegetables or fruits) for at least 48 hours
prior to examination. Fluid diet (e.g. honey, pure soup, tea, water, pure fruit juice, pure jelly, etc.) 24 hours before examination.
b) A suitable aperient prescribed by doctor in-charge shall be given on evening
before examination.
c) Fluid diet on the day of examination and cleansing enema should be
performed.
2. Patient should follow the instructions of the staff during the examination
as various positions may be adopted to facilitate the flow of contrast.
3. For diabetic patient on drug - consult clinician concerned for the adjustment
of insulin dosage if necessary
In case of doubt please ask our radiological staff or the referring clinician.
Please inform our staff before the examination if you think you are or may be
pregnant.
大腸鋇劑灌腸造影
檢查目的：
檢查病人大腸病理。
方法：
病人在檢查前須先在病房內接受灌腸清洗程序。檢查時放射科醫生會利用Ｘ光透視觀察，將鋇劑和空氣通過導管注入直腸及大腸內，並同時進行Ｘ光攝影。當檢查進行時，病人如感覺腹部疼痛或任何不適，應立即通知醫生。
副作用：
一、 大腸內注入空氣及鋇劑，會引起腹部脹痛不適。
二、 病人腸壁如因近期手術而有輕微破損，鋇劑造影檢查可能導致大腸穿孔而引發
相應的併發症。
三、 鋇劑可能滲入靜脈血管內。
（上述二及三兩項副作用，只是在個別的病例才可能發生，且發生率極微。）
檢查前準備：
一、 為確保高質素的Ｘ光檢查效果，病人必須遵從醫護人員的指導如下：
i） 檢查前二天低渣滓飲食（如麵包、薯仔、飯等澱粉質食物，但不能吃蔬菜、生果）。
ii） 檢查前一天流質飲食 (如蜜糖水，清湯，清茶，開水，清果汁， 啫喱等)。
iii）檢查前一晚，依醫生指示服用瀉藥。
iv） 檢查日流質飲食及要接受灌腸清洗程序。
二、 病人在檢查進行中，應與本部門醫生及放射技師合作，病人身體須遵照工作人
員的指引而作不同角度轉動，以配合Ｘ光儀器拍攝大腸各部份。
三、 糖尿病人請遵照醫生指示調節糖尿藥份。
注意：
病人如懷疑其本人可能或已經懷孕，在檢查前切記通知本部人員。如有任何疑問，請向主診醫生或放射科醫生查詢。