How do you do gastric AFB aspirate?

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How do you do gastric AFB aspirate?

Attach a syringe to the nasogastric tube. Gently insert the nasogastric tube through the nose and advance it into the stomach. Withdraw (aspirate) gastric contents (2–5 ml) using the syringe attached to the nasogastric tube.

How do you neutralize gastric aspirate?

Neutralization of gastric aspirates with sodium bicarbonate is conventionally recommended to improve yield on culture (5, 6). To our knowledge, there have been no studies that evaluated the efficacy of neutralization of gastric aspirates with sodium bicarbonate or sodium carbonate.

How much fluid is needed for gastric lavage?

In general, aliquots of 50 to 100 mL per lavage are used in adults. Larger amounts of fluid may force the toxin past the pylorus. Lavage fluid is 0.9% saline.

Which syringe is used for gastric lavage?

Large-bore nasogastric/orogastric tube coated with a lubricant gel (eg, lidocaine gel), funnel, bucket, 50 mL syringe. 1. Insert the nasogastric/orogastric tube into the stomach, then confirm placement (see Nasogastric/Orogastric Tube Insertion).

What pH should NG aspirate?

The pH reading should be between 1-5.5. However, if you obtain a result of between 5-6 do not administer anything down the nasogastric tube. You must telephone your nurse or managing healthcare professional for further advice because the aspirate reading will need to be reconfirmed.

How do I measure the pH of gastric aspirate?

Open the clamp on the tube (if present) • Drop the fluid onto the pH indicator strip and read the pH as per manufacturers instructions. If the pH value is 1-5.5 it suggests the tube is in the correct position (the stomach).

What is the normal pH of gastric contents?

Normal Results The normal volume of the stomach fluid is 20 to 100 mL and the pH is acidic (1.5 to 3.5). These numbers are converted to actual acid production in units of milliequivalents per hour (mEq/hr) in some cases.

How do I give RT to lavage?


  1. Intubate patient.
  2. Place patient in left lateral decubitus position with head 20 degrees downward.
  3. Externally measure length of lavage tube needed to reach stomach.
  4. Lubricate appropriately sized lavage tube and gently pass through esophagus to stomach.
  5. Confirm placement of tube.

What is the normal pH of gastric aspirate?

The pH of gastric aspirate is acidic (1 to 5), the pH of intestinal aspirate is approximately 6 or more, and the pH of respiratory aspirate is more alkaline (7 or more). Using the pH method is most effective in distinguishing between gastric and intestinal placement.

How is NGT size measured?

Measure the distance from the tip of his nose to his earlobe to the xiphoid process. Mark this length on the tube with a piece of tape. Place a towel over the patient’s chest and an emesis basin within reach.

What is the purpose of gastric aspiration?

Gastric aspiration can also be used to obtain specimens of swallowed sputum. It is the best way to obtain specimens from infants and some young children who cannot produce sputum. Gastric aspiration often requires hospitalization and should be done in the morning before the patient gets out of bed or eats.

What is the best time of day to do a gastric aspiration?

Gastric aspiration often requires hospitalization and should be done in the morning before the patient gets out of bed or eats. Gastric aspirates need to be transported to the laboratory immediately so they can be neutralized or neutralized immediately at the site of collection.

How many ml of aspirate was collected per patient?

At least 5-10 ml of aspirate was collected each time in each case. Any reactive vomitus was also collected. Three consecutive specimens were collected from each patient every morning into properly labeled universal bottles.

Does standardization of gastric aspirate technique improve yield in tuberculosis (TB)?

Pomputius WF 3 rd , Rost J, Dennehy PH, Carter EJ. Standardization of gastric aspirate technique improves yield in the diagnosis of tuberculosis in children. Pediatr Infect Dis J 1997;16:222-6.