Bonka Kostova had been employed at the trust as a healthcare support worker for 15 months before the alleged incident took place during a night shift on Ward 6.
The Nursing and Midwifery Council heard that she had also "abruptly" pushed the same vulnerable patient back down in his wheelchair when he tried to get up, telling him: "Stay there."
Jane Wilkinson, a senior staff nurse, told the hearing that Kostova would often "huff and puff" when working with dementia patients.
She said the 73-year-old patient, identified as Patient A, had been admitted to the urology and colorectal ward with kidney stones but that he also had Parkinson's and severe Alzheimer's.
His behaviour could often be difficult and he required one-to-one care.
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