Severe Covid-19 patients who develop serious respiratory symptoms such as breathing difficulty or shortness of breath. In addition, using high-flow nasal cannula often leads to serious dehydration.

Therefore, it is the priority to replace lost water by sipping more drinks through the day.

Patients will experience excessive thirst, dry mouth and cracked lips if they are dehydrated. However, not anyone is able to drink by himself/herself. If patients have a mild disease, they can drink by themselves to replace the lost fluids. The patients who suffer from serious conditions, especially those who are ventilated through a breathing mask may have eating and drinking difficulties.