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Ooh, I know this one. In my pre-nursing-school life I was a linguistics major, if that gives any weight to what I say.
Default/variant choice (in this case a/an) is driven by phonetics. Therefore when you say myocardial infarction, there is a consonant sound at the front word boundary, meaning you'd use "a." However, when you say MI (em-eye), the front word boundary is a vowel sound, which means you'd use "an."
An before vowels and words that begin with vowel sounds. So an MI and an RZ are correct. Good explanation: http://www.quickanddirtytips.com/education/grammar/a-versus-an
Ooh, I know this one. In my pre-nursing-school life I was a linguistics major, if that gives any weight to what I say.Default/variant choice (in this case a/an) is driven by phonetics. Therefore when you say myocardial infarction, there is a consonant sound at the front word boundary, meaning you'd use "a." However, when you say MI (em-eye), the front word boundary is a vowel sound, which means you'd use "an."
That's what the estimable Grammar Girl says. She has a great website, cited above by JustBeachy!
chutley76
34 Posts
Hi !
Doing a paper for a myocardial infarction and when I abbreviate it to MI, is it preceded by A or AN.
When I type it out, I want to write the patient had an MI rather that the patient had a MI.
What is correct??