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I think it should be decreased blood flow (without 'the') because the contextual meaning of the sentence is talking about the comparison of meaning of 'decreased blood flow through the coronary arteries' and 'less oxygen is reaching the myocardium'. It is not talking specifically about the 'action' of 'decreased blood flow'. Am I correct? Teachers please put comment on this.
' ( Decreased blood flow / The decreased blood flow ) through the coronary arteries means that less oxygen is reaching the myocardium.'
I guess 'The decreased blood flow' is right.
My reason is that 'blood flow' is specified by the preposition phrase 'through the coronary arteries'.
This is a bold guess. Maybe I'm wrong. I'm not a native and articles are still difficult for me.
Native teachers, which is correct?
another question about articles 
Re: another question about articles 
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