Questions and Answers
What type of feeding is described by the following terms: continuous, intermittent, bolus, cyclic?
1 cal/cc = ____% free water
85%
1.5 cal/cc = ____% free water
78%
2 cal/cc = ____% free water
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If Jevity 1.2 is given at 60mL/hr, what is the amount of free water provided per day?
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For Levity 1.2 intermittent feeds of 200mL every 4 hours, how much free water is provided?
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What is the total volume provided for Levity 1.2 with 450mL 4 times daily?
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You can use a bolus dose in a Gtube.
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What is the total kcal per day for TwoCal HN at 40mL/hr?
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To determine the feeding rate, which two calculations need to be estimated?
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If a patient needs to provide 2000 kcals/day and has a formula of 1 cal/mL, what should the rate be?
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Which of the following are general guidelines for tube feeding rates?
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What questions should be considered when determining tube feeding rates?
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Study Notes
Tube Feeding Calculations
- Different types of tube feeding include continuous, intermittent, bolus, and cyclic methods.
- Calculating kcal, protein, and nutrients involves determining the total volume provided.
Caloric Density and Free Water
- 1 cal/cc formula provides 85% free water.
- 1.5 cal/cc formula provides 78% free water.
- 2 cal/cc formula provides 70% free water.
Example Calculations
-
Jevity 1.2 at 60mL/hr (continuous feeding):
- Daily volume: 1440 mL = 1.44 L
- Total kcal: 1728 kcal (1.2 kcal/mL)
- Protein: 80g (1.44 L x 55.5g/L)
- Free water: 1162 mL (1440 mL x 0.807)
-
Levity 1.2 Intermittent Feeds:
- Daily volume: 1200 mL (200 mL x 6)
- Total kcal: 1440 kcal (1200 mL x 1.2)
- Protein: 66.6g (1.2 L x 55.5g/L)
- Free water: 968 mL (1200 mL x 0.807)
-
Levity 1.2 Bolus Feeds (450 mL 4x daily):
- Daily volume: 1800 mL (450 mL x 4)
- Nutritional equivalence to continuous feeding at 75 mL/hr.
- Associated with a greater risk of aspiration; suitable for home feeding.
Feeding Tube Considerations
- Bolus doses should not be administered through a G-tube.
TwoCal HN Calculation at 40mL/hr
- Daily volume: 960 mL (40 mL/hr x 24)
- Total kcal: 1920 kcal (960 mL x 2)
- Protein: 80g (0.96 L x 83.5g/L)
- Free water: 672 mL (960 mL x 0.7)
Determining Feeding Rates
- To find kcal needs: total volume (mL) = kcal needs / concentration (kcals/mL).
- Rate (mL/hr) = total volume (mL) / hours of feeding.
Providing Daily Nutritional Needs
- For 2000 kcal and 80g protein, with 200mL fluid:
- Rate for 1 cal/mL formula: 83 mL/hr.
- Free water needs: 1662 mL; requires an additional 338 mL of water/day.
- Recommendations include using a fiber formula, gradual rate increase, and regular water flushing.
General Guidelines for Tube Feeding
- Formulas often ordered in multiples of 5; common rates: 80 or 85 mL/hr.
- Max continuous feeding rate: ~120 mL/hr.
- Max bolus feeding volume: typically 250-400 mL, up to 500 mL in high cases.
- Flush with 30-150 mL of water.
Questions for Rate Determination
- Are calorie estimates conservative; can feeding rate be increased safely?
- Is an alternative formula available to meet protein or kcal needs?
- If no alternative, consider using a modular supplement to meet nutritional goals.
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Description
This quiz consists of flashcards focused on calculating tube feeding parameters. It covers the caloric content, percentage of free water in different feeding formulas, and continuous feeding rates. Perfect for students and professionals in nutrition and healthcare.
