PNV, or Parenteral Nutrition and Ventilation, refers to a medical approach used to provide essential nutrients and support to patients who cannot eat normally. This method involves delivering nutrients directly into the bloodstream through an intravenous (IV) line, ensuring that patients receive the necessary vitamins, minerals, and calories for recovery. In addition to nutrition, PNV may also involve mechanical ventilation, which assists patients in breathing when they are unable to do so on their own. This combination is often used in critical care settings, helping patients recover from severe illnesses or surgeries while ensuring their nutritional needs are met.