My mother was hospitalised in the Singapore General Hospital for a while, and my family members and I visited her very regularly.
During our visits, we unfortunately witnessed a few cases where patients were found unconscious or dead by either the nurses or, sadly, by their relatives.
As the nurses have many patients to tend to, especially in Class C wards, by the time they check on a patient and discover that he is unresponsive, it may be too late.
To help overcome this, perhaps patients can be fitted on their arms or legs with wireless heart monitoring devices, which can transmit the patients' vital signs to a computer, which can store data and raise an alarm to warn hospital staff if the patient is in danger.
Such devices that link to smartphones are available in the market for general consumer use.
I think it would be easy to implement it in a hospital environment. They could help save lives.
P. V. George