For example: char a; a= getchar(); The function getchar() reads a single character from the standard input device, the keyboard being assumed because that is the standard input device, and assigns it to the variable a.
This excludes acute and chronic respiratory failure (518.84), acute respiratory distress (518.82), acute respiratory failure following trauma and surgery (518.51), chronic respiratory failure (518.83), respiratory arrest (799.1), and respiratory failure, newborn (770.84). This applies to respiratory failure NOS.
Acute respiratory failure occurs when fluid builds up in the air sacs in your lungs. When that happens, your lungs canât release oxygen into your blood. In turn, your organs canât get enough oxygen-rich blood to function. You can also develop acute respiratory failure if your lungs canât remove carbon dioxide from your blood. Respiratory failure happens when the capillaries in your air sacs canât properly exchange carbon dioxide for oxygen. The condition can be acute or chronic. Acute respiratory failure causes you to experience immediate symptoms from not having enough oxygen in your body.