Medicare Part C covers prescription drugs.

Assuming all of the following patients have experienced significant blood loss and are hypotensive, in which would the use of PASG be absolutely contraindicated?

A) A 19-year-old woman with an unstable pelvis after being thrown from a horse B) A 35-year-old pregnant woman with bilateral femur fractures sustained in a head-on motor vehicle collision C) A 16-year-old male with massive blood loss from a severed popliteal artery as a result of being struck by a piece of metal debris ejected by a lawn mower D) A 31-year-old man with a stab wound between his thoracic vertebral column and right scapula

What factors may affect the onset of periodontal diseases?

A) Plaque B) Host defense mechanisms C) Exogenous antimicrobial agents D) All of the above