Solve the calculations using Arabic numbers. LXIX + IX =

What is often an indicator of malignant melanoma?

A) A tumor that appears on the edges of the lips and metastasizes to a distant organ B) A scaly or crusty bump on the surface of the skin C) Malfunctioning melanocytes leaving dark spots on the skin D) A mole that changes shape or color and begins to bleed

Calculate the pulmonary vascular resistance (PVR) given the following measurements obtained during a hemodynamic study:

pulmonary artery pressure (PAP) = 40/22 mm Hg, pulmonary artery occlusion pressure (PAOP) = 12 mm Hg, blood pressure (BP) = 156/80 mm Hg, central venous pressure (CVP) = 19 mm Hg, cardiac output (C.O.) = 4.8 L/min, and heart rate (HR) = 68 beats/min. a. 150 dyne ? sec ? cm?5 b. 267 dyne ? sec ? cm?5 c. 317 dyne ? sec ? cm?5 d. 1496 dyne ? sec ? cm?5