Truck Driving School Costs. The average length of PTDI-certified courses is four to six weeks, though courses may be as short as two weeks or as long as 12 weeks or more. The average cost of PTDI-certified courses is about $4,200, though the cost of truck driving school may be as low as $1,500 and as high as $10,000.
Orthopnea is the opposite of platypnea, shortness of breath that worsens when sitting or standing up.
Orthopnea Definition. Orthopnea is a condition that causes shortness of breath when a person is lying down. The feeling is characterized by tightness in the chest and is often described as âair hungerâ, as one feels that they arenât able to breathe enough and feel a deficit of oxygen.