Gastric Lavage Set in Pediatrics: Complete Guide to Use, Types, and Safety
A gastric lavage set is a medical device used to wash out the stomach. It is most commonly used in emergency situations, such as when a child has swallowed something harmful. This guide covers everything about the device: what it is, how it works, how it is used, and what to watch out for.
What Is a Gastric Lavage Set?
A gastric lavage set is a collection of medical tools used together to flush the contents of the stomach using water or a salt solution (saline). The process is also called stomach washout or gastric irrigation.
The set allows a tube to be passed through the nose or mouth into the stomach. Fluid is then poured in and drained out repeatedly until the stomach is cleared.
Gastric lavage is a clinical procedure. It must only be performed by trained medical professionals in a proper healthcare setting.
Purpose and Where It Is Used
Main Purpose
- Remove swallowed poisons or toxic substances from the stomach
- Clear the stomach before certain surgeries or procedures
- Stop or reduce ongoing bleeding in the stomach (in some cases)
- Deliver medications directly into the stomach in rare clinical situations
- Collect stomach samples for laboratory testing
Where It Is Used
- Hospital emergency departments
- Pediatric intensive care units (PICU)
- Neonatal intensive care units (NICU) for certain newborn conditions
- Poison control centers within hospitals
- General pediatric wards when prescribed
Gastric lavage is most commonly used within the first 1 to 2 hours after ingestion of a toxic substance, when the material is still likely to be in the stomach.
Types of Gastric Lavage Sets
Gastric lavage sets vary mainly by tube size, tube route, and the design of the drainage system. Below are the main types used in pediatric settings:
| Type | Route | Common Use |
|---|---|---|
| Orogastric Lavage Set | Mouth to stomach | Acute poisoning, emergency washout |
| Nasogastric Lavage Set | Nose to stomach | Less urgent cases, feeding complications, bleeding |
| Ewald Tube Set | Mouth to stomach | Older children, larger bore for rapid washout |
| Neonatal Lavage Set | Mouth or nose | Newborns with meconium ileus or swallowed blood |
Key Components Found in Most Sets
- Lavage tube (varying sizes in French gauge, e.g., 10Fr to 36Fr depending on age)
- Funnel or irrigation syringe (usually 50ml or 60ml Luer-lock)
- Collection bag or drainage tube
- Lubricating gel (water-based)
- pH indicator strips or litmus paper (to confirm stomach placement)
- Clamp or stopcock to control flow
- Connecting tube or Y-connector
- Disposable gloves and protective draping
Step-by-Step: How Gastric Lavage Is Performed
This section is for informational and educational purposes only. The procedure must be performed by trained healthcare professionals.
Before the Procedure
1Check the clinical indication. Confirm that gastric lavage is appropriate for the situation and not contraindicated.
2Select the correct tube size based on the child's age and weight. Smaller gauge tubes are used for infants; larger ones for older children.
3Gather all equipment: lavage tube, syringe, lubricant, drainage bag, pH strips, suction if needed, and personal protective equipment (PPE).
4Explain the procedure to the caregiver if present. Position the child appropriately (usually left lateral position with head slightly down, or supine with head tilted for infants).
5If the child is unconscious or at risk of aspiration, airway protection (intubation) must be secured first before tube insertion.
During the Procedure
6Measure the tube length externally (from nose or mouth to the stomach) and mark it before insertion.
7Lubricate the tube tip with water-based gel. Insert gently through the mouth (orogastric) or nose (nasogastric) and advance to the marked length.
8Confirm tube placement by aspirating stomach contents and checking pH (should be acidic, pH 1-5) or by auscultation (listening with a stethoscope while injecting air). X-ray is the gold standard for confirmation if uncertain.
9Attach the syringe or funnel. Instill normal saline or warm water in small, age-appropriate aliquots (typically 10ml/kg per cycle, not exceeding 200-300ml per aliquot).
10Lower the tube or use gravity or gentle suction to drain the fluid back out. Collect in the drainage bag.
11Repeat cycles until the returning fluid is clear. Monitor the volume of fluid instilled versus drained to track balance.
After the Procedure
12Remove the tube gently. Note any resistance or bleeding.
13Monitor the child's vital signs, oxygen saturation, and level of consciousness throughout and after the procedure.
14Document all findings: tube size used, fluid instilled and returned, appearance of fluid, and child's response.
15Dispose of all used equipment according to biomedical waste disposal guidelines.
Activated charcoal is sometimes given after gastric lavage for certain poisonings. This is a separate step and is given per the treating doctor's instructions.
Precautions and Risks
When Gastric Lavage Should NOT Be Done (Contraindications)
- Ingestion of corrosive substances (strong acids, alkalis, drain cleaners) - tube insertion can cause further injury
- Ingestion of hydrocarbon-based substances (petrol, kerosene) - risk of aspiration pneumonia
- Sharp objects or pill capsules that could damage the esophagus
- Unprotected airway in an unconscious child (unless intubated first)
- Recent esophageal or stomach surgery
- Ingestion of more than 1 to 2 hours ago in most cases (reduced effectiveness)
- Known esophageal varices (risk of severe bleeding)
Gastric lavage is not recommended as a routine treatment for all poisoning cases. Current medical guidelines reserve it for specific high-risk ingestions within a narrow time window. The decision is always made by a qualified medical professional.
Possible Complications
| Complication | Description |
|---|---|
| Aspiration pneumonia | Stomach contents entering the lungs during the procedure |
| Laryngospasm | Sudden tightening of the voice box, causing breathing difficulty |
| Electrolyte imbalance | From excessive fluid instillation, especially in infants |
| Esophageal injury | From forceful or improper tube insertion |
| Hypothermia | From using fluid that is too cold, especially in newborns |
| Vagal reaction | Drop in heart rate during tube insertion |
| Epistaxis (nosebleed) | Occurs with nasogastric route insertion |
Important Precautions
- Always confirm tube placement before instilling any fluid
- Use only age-appropriate tube sizes and fluid volumes
- Use warm normal saline to avoid hypothermia, especially in neonates and infants
- Keep suction equipment ready throughout the procedure
- Never force the tube if resistance is felt
- Monitor fluid balance carefully in infants (small body weight means fluid overload risk is high)
Frequently Asked Questions
Is gastric lavage painful for children?
The tube insertion can be uncomfortable, especially for awake children. Sedation or local anesthesia may be used in some cases based on clinical judgment. The level of discomfort depends on the child's age, cooperation, and technique used.
How soon after swallowing poison should gastric lavage be done?
It is most effective within 60 minutes of ingestion. After 1 to 2 hours, most substances have already moved from the stomach into the intestine, reducing the effectiveness of lavage.
What fluid is used during the wash?
Normal saline (0.9% sodium chloride) or warm plain water is used in most cases. Tap water alone is not preferred in small infants due to risk of electrolyte imbalance. The fluid should be at body temperature to prevent hypothermia.
Can gastric lavage be done at home?
No. Gastric lavage requires trained medical staff, a confirmed tube position, suction equipment, and monitoring. Attempting it outside a hospital setting is dangerous and can cause serious injury or death.
Is gastric lavage the same as induced vomiting?
No. These are two different methods of gastric decontamination. Induced vomiting (emesis) is generally not recommended in children, especially after corrosive or hydrocarbon ingestion. Gastric lavage is a controlled clinical procedure done through a tube.
What tube size is used for infants and newborns?
For neonates, 8Fr to 10Fr tubes are typically used. For infants up to 1 year, 10Fr to 14Fr. Sizes increase with age, up to 28Fr to 36Fr for older children and adolescents. Exact sizing is always determined by the attending clinician.
Is gastric lavage always recommended for poisoning?
No. Guidelines from major toxicology organizations, including the American Academy of Clinical Toxicology, recommend gastric lavage only for life-threatening ingestions presenting early. For most childhood poisoning cases, activated charcoal alone or supportive care is preferred.
Is a gastric lavage set reusable?
Most modern gastric lavage sets are single-use and disposable. Reusable metal or glass components exist in some older or resource-limited settings but require rigorous sterilization between uses. Single-use sets are preferred to reduce infection risk.
How to Store and Maintain the Device
- Store in original sealed packaging in a clean, dry, and dust-free area
- Keep away from direct sunlight and extreme temperatures; tube material degrades with heat
- Check expiry date on each component before use - PVC tubes have a shelf life
- Do not store near chemicals, solvents, or cleaning agents that may damage the tubing
- Single-use components should never be re-sterilized or reused under any circumstances
- Keep the set intact and complete; do not remove individual parts until needed
- In emergency trolleys or crash carts, inspect sets monthly for packaging integrity and expiry
- Follow institutional protocols for restocking after use
Standards and Current Guidelines
Gastric lavage as a procedure is governed by clinical toxicology guidelines. Key recommendations come from:
- American Academy of Clinical Toxicology (AACT) and European Association of Poisons Centres (EAPC) - Joint Position Statement on Gastric Lavage
- WHO guidelines on the management of poisoning in children
- Individual hospital protocols based on regional evidence
Medical understanding of gastric lavage has evolved. It is now used less frequently than in the past due to evidence showing limited benefit in many cases and significant risk of complications when not performed correctly.
References and Further Reading
The following are recommended resources for professionals seeking more detailed clinical information:
- Nelson Textbook of Pediatrics (Elsevier) - Chapter on Poisoning
- Fleisher and Ludwig's Textbook of Pediatric Emergency Medicine
- Goldfrank's Toxicologic Emergencies (McGraw-Hill)
- WHO - Management of Poisoning: A Handbook for Health Care Workers (WHO Publications)
- AACT/EAPC Joint Position Statement on Gastric Lavage - Journal of Toxicology: Clinical Toxicology (available on PubMed/official AACT website)
- UpToDate - "Gastrointestinal decontamination of the poisoned patient" (subscription resource)
Medical Disclaimer: The information on this page is intended for general educational purposes only. It does not constitute medical advice, diagnosis, or treatment. Gastric lavage is a clinical procedure that must only be performed by trained and qualified healthcare professionals in an appropriate medical setting. The details provided here do not replace formal clinical training, institutional protocols, or the judgment of a licensed medical practitioner. Always follow current evidence-based guidelines and consult qualified professionals for any medical decision. PediaDevices is not responsible for any action taken based on the information provided on this page.
Content reviewed and verified by a qualified Pediatrician | PediaDevices
Labels: GIT-System