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21. Histamine will be given subcutaneously to stimulate gastric secretions.
22. Continuously monitor the blood pressure to detect hypotension.
23. Collect gastric specimens every 15 minutes for 1 hour.
24. Label the specimen to indicate specimen before and after histamine injection
25. Comfort the patient
26. Clean or discard used equipment.
27. Record

4.16 Gastric lavage
Definition: Gastric lavage is the introduction of the solution into the stomach and
removing gastric contents through a nasogastric tube for washing out the stomach.
Purpose
To remove inserted poison, other than corrosive substances like ammonia and mineral
substances.
To introduce ice water or normal saline solution in tackling bleeding.
To cleanse the stomach before the operation.
For diagnostic purposes.
To relieve congestion, nausea, and vomiting.
Indication
 Pyloric stenosis
 Poisoning
 Preoperative care

Equipment
1. Equipment for NG tube insertion
2. Measuring jug
3. 2-3 litters of the prescribed solution.
4. IV stand
5. Tap water or ice if ordered
6. 50ml syringe
7. Funnel
8. Gloves
9. Rubber and cotton sheet
10. Towel
11. Litmus paper
12. Suction machine (optional)
13. Labeled specimen container
14. Laboratory request form
15. Charcoal tablets ( universal antidote)
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