Signs and symptoms of an effusion vary depending on the underlying disease, but dyspnea, cough, and pleuritic chest pain are common. Chest examination of a patient with pleural effusion is notable for dullness to percussion, decreased or absent tactile fremitus, decreased breath sounds, and no voice transmission.
Medical Definition of velamentous insertion. : attachment of the umbilical cord to the chorion beyond the margin of the placenta.
central venous catheterization insertion of an indwelling catheter into a central vein for administering fluid and medications and for measuring central venous pressure. The most common sites of insertion are the jugular and subclavian veins; however, such large peripheral veins as the saphenous and femoral veins can be used in an emergency even though they offer some disadvantages.