Where do most pulmonary emboli originate?

a. Deep veins of the arms
b. Deep veins of the legs
c. Thrombi from the right side of the heart
d. Veins of the thorax

ANS: B
Pulmonary emboli arise from detached portions of venous thrombi that form, in most cases, in deep veins of the lower extremities or pelvis (86%).

Health Professions

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Because extrication and rescue are medically complex:

A) the officers responsible for these functions usually function under the EMS branch of the incident command system. B) no lengthy extrication or rescue operation should commence until an emergency physician is present at the scene. C) the position of extrication or rescue officer should always be assumed by an experienced EMT or paramedic. D) anyone who requires extrication or rescue should be triaged and receive basic lifesaving care before being extricated or rescued.

Health Professions

A Maryland bridge consists of a pontic with one or two metal clasps or wings on one or both sides that are cemented or bonded to adjacent natural teeth

Indicate whether the statement is true or false

Health Professions