What would be the approximate internal diameter (ID) in mm of a tracheal tube for a child who is 6 years old?
Understand the Problem
The question asks to calculate the internal diameter (ID) of a tracheal tube for a 6-year-old child, presumably using a provided or standard formula (though the formula itself isn't given in the text). We need to infer a formula based on typical medical practices and the answer choices to determine the correct ID.
Answer
The approximate internal diameter of an uncuffed tracheal tube for a 6-year-old child is 5.5 mm.
For a 6-year-old child, the approximate internal diameter (ID) of an uncuffed tracheal tube is 5.5 mm. This is calculated using the formula: (age in years / 4) + 4.
Answer for screen readers
For a 6-year-old child, the approximate internal diameter (ID) of an uncuffed tracheal tube is 5.5 mm. This is calculated using the formula: (age in years / 4) + 4.
More Information
The formula (age in years / 4) + 4 is commonly used to estimate the appropriate uncuffed endotracheal tube size for children between 1 and 10 years old.
Tips
It is important to note that this is just an estimate, and the actual size needed may vary depending on the individual child. Using a cuffed tube will change the calculation to (age in years / 4) + 3.
Sources
- Choice of the correct size of endotracheal tube in pediatric patients - pmc.ncbi.nlm.nih.gov
- Endotracheal tube size for children (Age 1 to 8 years) - Merck Manuals - merckmanuals.com
- Pediatric Tube Sizes - 5minuteairway - 5minuteairway.com
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