Sick kids will spend less time in hospital under a program allowing doctors and nurses to safely monitor their condition remotely.

More than 100 children have passed through the virtual emergency department under the trial, with 80 per cent successfully completing their recovery at home.

Sydney mum Rose Mateaki was initially hesitant to use the service, but clear instructions and regular video calls with doctors and nurses put her mind at ease.

She brought her two-year-old son Christian to Westmead Hospital in Sydney's west as he was experiencing severe gastro.

Medical staff suggested Christian be discharged under the virtual care service after he completed a drip.

"My husband and I were quite stressed out because of what he (Christian) had gone through over the couple of days," Ms Ma

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