Now the builder is telling us we have to purchase a different dryer that does not require outside ventilation.

Do not attempt any major refinishing projects, however, since these usually require adequate ventilation.

Indoors, you can do those painting or refinishing projects that require ventilation.

His condition deteriorated over the next week until he required ventilation.

When this is insufficient, the patient might require mechanical ventilation.

She was admitted to the hospital and over the next five days had progressive decline in mental status requiring mechanical ventilation.

The patient's mental status is improving and he no longer requires mechanical ventilation.

In 10 to 20% of cases patients will require mechanical ventilation.

It usually requires mechanical ventilation in an intensive care unit setting.

Higher mortality rates were found for rural patients with conditions which required complicated ventilation.