How should I prepare an Ensure Plus enteral bolus feed using the supplied scoop and the appropriate amount of water?

Preparing Ensure Bolus Feeding

For bolus feeding with Ensure, administer 200-400 mL of full-strength formula over 15-60 minutes using a 50 mL syringe (with or without plunger), flushing the tube with water before and after each feeding to prevent tube occlusion. 1

Preparation Steps

Formula Preparation

• Use full-strength Ensure without dilution – there is no evidence supporting dilution of feeds at the start of enteral nutrition unless additional water is specifically needed for hydration 1
• If using powdered formula, follow manufacturer's scoop instructions for reconstitution
• For liquid Ensure products (Ensure, Ensure Plus), use directly from the container without mixing 2

Volume and Frequency

• Divide total daily feed volume into 4-6 separate bolus feedings throughout the day 1
• Each bolus should be 200-400 mL depending on the patient's nutritional needs and tolerance 1
• Administer over 15-60 minutes per bolus 1

Administration Technique

Equipment Needed

• 50 mL enteral syringe (with or without plunger) 1
• Water for flushing (room temperature tap water is acceptable)
• Ensure formula at room temperature

Step-by-Step Process

Before feeding:

• Confirm nasogastric tube position is correct before initiating any feeding 1
• Flush the tube with 30-60 mL of water to ensure patency and prevent tube occlusion 1, 3

During feeding:

• Draw up formula in 50 mL increments using the enteral syringe 1
• Administer slowly by gravity or gentle plunger pressure over the designated time period 1
• Allow the formula to flow at a controlled rate – avoid rapid administration faster than 85 mL/min as this increases nausea, discomfort, fullness, and cramping 4
• For optimal tolerance, administer at approximately 30 mL/min 4

After feeding:

• Flush the tube immediately with 30-60 mL of water to prevent formula from remaining in the tube 1, 3
• This post-feeding flush is critical as premixed intact protein formulas like Ensure and Ensure Plus are prone to clotting and tube occlusion, especially when exposed to gastric acid 2

Critical Precautions

Tube Occlusion Prevention

• Always flush before and after each feeding – this is the most important step to prevent tube blockage 1, 3
• Ensure products (intact protein liquid formulas) have higher clotting potential compared to hydrolyzed protein formulas 2
• Never allow formula to sit in the tube between feedings 3
• If checking gastric residuals, flush the tube immediately after aspiration to eliminate acid precipitation of formula 2

Medication Administration

• Never mix medications directly with Ensure formula 3
• Flush with water between formula and medication administration 3
• Avoid mixing Ensure with liquid medications having pH ≤5.0, as this increases clotting risk 2

Tolerance Monitoring

• First-time bolus feeding may cause nausea or discomfort, but subsequent feedings are typically better tolerated 4
• Larger volumes (up to 750 mL) can be tolerated when administered slowly at 30 mL/min 4
• Bolus feeding is only appropriate for gastric tubes (nasogastric or gastrostomy) – never use bolus technique for jejunal tubes 1

Tube Type Considerations

• Nasogastric tubes: Can start bolus feeding immediately once position is confirmed 1
• Gastrostomy tubes: Can commence feeding within 2-4 hours after uncomplicated placement 1
• Jejunal tubes: Require graduated pump-assisted feeding, NOT bolus administration 1