1 1902 Willis Haviland Carrier invented the first air conditioner to control the temperature and humidity of a printing company, marking the first time effort taken to control the temperature of the surroundings. 2  This starts the history of air conditioning.
Following the introduction and widespread use of central venous catheters (CVCs) in adult patients, these devices are now frequently used also in the pediatric population. They have become an indispensable route for venous access, especially in pediatric intensive care units (PICUs).
JENNIFER CRANNY, M.D., THOMAS POPE, M.D., JAMES BOVA, D.O. CENTRAL VENOUS CATHETERS & PICC LINE POSITION ON PORTABLE CHEST X-RAY. One of the more common clinical examinations we deal with on a daily basis is the able chest X-ray port. performed for catheter placement. The most commonly used catheters are central venous catheters and PICC.