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.
Platyhelminthes. (flatworms), a large group of bilaterally symmetrical free-living or parasitic invertebrates. The Platyhelminthes are classified as a subphylum of the phylum Scolecida or as a separate phylum. Flatworms range in length from 0.1 mm to several meters. The body is usually flattened and oval or somewhat elongate. It may be unsegmented or divided into several segments (tapeworms).