Mae rhai byrddau iechyd wedi defnyddio eu gwelyau wrth gefn ar lefelau y tu hwnt i’w cynlluniau integredig ar gyfer y gaeaf, a hynny mewn ymateb i'r pwysau hyn, fodd bynnag mae'r gwasanaeth hefyd yn ystyried pa gamau pellach i'w cymryd ar unwaith.
Some health boards have opened extra surge capacity above that identified in their integrated winter plans in response to these pressures, however the service is also considering what further immediate action it can take.