Though words may be repeated deliberately, for effect, repetitions will seem awkward if they are clearly unnecessary. When a more concise version is possible, choose it.
There’s no good reason to repeat patient or student within the same sentence.
NOTE:Not all repetition is undesirable. Sometimes repeating key words from sentence to sentence is a very effective means for gaining coherence.
Exercises:
Wordy sentences 1
Wordy sentences 2
Wordy sentences 3
Wordy sentences 4