1. Contrast 2 Pharmacological agents

2. Hyoscine –N-butyle bromide(Buscopan) Adult dose 20mg I/V It inhibit intestinal motility and gastric secretion Advantages. Immediate action,short duration of action and it is not expensive Disadvantages. Blurring of vision,dry mouth,tachycardia and urinary retention. Contraindications.close angle glaucoma,myasthenia gravis,pyloris stenosis etc glucogon can be used in these situations

3. Glucogon Adult dose..3—1mg Childern dose,5—1microgram/kg Advantages.more potent smooth muscle relaxant than glucogan,,short duration of action and it do not interfer with ttransit time of bowel Disadvantages.hypersensetivity teaction is possible,long onset of action and expensive

4. Contraindication of glucogan Adrenal tumors.glucogan can cause sudden hypertension.if hypertension occure,phentolamine can be used for treatment Endocrine tumors of pancrease

5. Meticlopramide(maxolon) It stimulate gastric empying and and short small intestinal transit. Adult dose.20mg oral or i/v Advantages it is antiemitic and enhance transit of barium during follow through examination Disadvantages.extrapyramidal side effects.these occure more likely in childern