Definition:
It involves removing the contents of the stomach and washing them using a gastric tube. Gastric lavage is not performed in the case of poisoning with acidic or alkaline substances, or if the injured person loses consciousness, or if the person has consumed a petroleum substance, or if he has consumed caustic potash.
the goal:
1- Rapid elimination of the toxic substance to reduce its absorption through the blood
2- To empty the stomach contents before performing a gastroscopy
3- To diagnose and stop stomach bleeding
Tools used:
1. Wide-opening gastric tube
2. Large syringe with a regulator (50 ml)
3. Large plastic funnel with a regulator compatible with the gastric tube
4. Water-soluble lubricant
5. Water from a tap or an alternative substance (milk, saline solution, sodium bicarbonate, fruit juice, activated charcoal)
6. Container to collect stomach contents
7. Mouth gag and endotracheal tube
8. Container for the sample to be analyzed
Steps:
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mental analysis |
Work |
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To prevent tooth extraction |
The mouth is evaluated for the presence of loose (unstable) teeth or dentures |
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To avoid the excess being expelled from the tube into the stomach |
Measure the distance between the tip of the nose and the sternum at its end and draw a mark on it |
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To facilitate the sliding of the tube |
The smoothing material is placed on the end of the tube that will be inserted into the patient |
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This is to prevent the stomach contents from being aspirated into the respiratory system |
In case of coma: A tube is placed in the patient’s trachea with a balloon to stabilize it |
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As explained above + to reduce the passage of stomach contents into the small intestine |
The patient is placed in a lateral position on the left side, with the head level lowered by about 15 degrees |
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The depth of insertion varies according to the size of the patients. Remember that if the tube enters the respiratory system, the patient will cough, choke and turn blue. To be sure, the patient should be subjected to a chest X-ray |
Pass the tube through the mouth while keeping the head in a neutral position. Pass the tube until the mark or the specified distance, i.e. about 50 cm or 20 inches After washing, pass the tube while keeping the head low and preparing the suction close to you |
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Aspiration is important to confirm the location of the tube and to remove the stomach contents. Real confirmation occurs with an X-ray |
The stomach contents are withdrawn using a syringe before introducing water or any antibody (place the sample to be analyzed in its designated place) |
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To reduce the occurrence of reflux of fluid from the throat and to aspirate it from the respiratory system or push this fluid into the small intestine |
Remove the syringe and connect the funnel to the end of the tube (50 cm) to inject the washing solution into the gastric tube. The incoming fluids must be a small amount at a time (150-200 cm). |
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Lift the funnel above the injured person’s head and pour 150-200 ml of liquid into it |
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The stomach contents will come out due to gravity |
Remove the funnel and let the stomach contents come out under the influence of gravity into the designated container |
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The first sample is kept separate from the rest for analysis |
Keep the sample resulting from the first and second washes |
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For this to happen, a person usually needs about (2 liters), sometimes using (5-20 liters). |
Washing is repeated several times until the liquid comes out clear and free of any particles |
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This will prevent the toxic substance from reaching the bloodstream, thus reducing its toxicity To help the intestines get rid of the toxic substance that entered them through the stomach by increasing its movement |
At the end of washing: The stomach may be left empty Or mix an absorbent material such as charcoal with water until it becomes the thickness of soap and leave it in the stomach We can introduce a saline solution through the urethral tube |
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Close the tube by pressing on it while pulling it out to prevent anything from being sucked into the respiratory system and not helping the gag reflex to work. Also keep the injured person’s head low as mentioned above |
While withdrawing the tube from the injured person, continue to withdraw the stomach contents or press on its tip to close it |
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The patient knows that his stool will become black due to the presence of charcoal in his stomach |