A multicenter staggered-implementation study of DeepCARS across three secondary hospitals associated AI vital-sign warnings with a 21% reduction in ward cardiac arrest and 15% lower in-hospital mortality, including signals in sepsis subgroups. Authors argue software alerts can add a safety layer where full rapid-response staffing is unaffordable. It matters for global hospitals priced out of classic RRS infrastructure. Caveat: exploratory endpoints on lead times and neurological outcomes were mixed, so causal claims should stay measured.