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).
There are several types of central venous catheters. Healthcare providers use the type that is best for each patientâs case. 1  A peripherally inserted central catheter (PICC) line is placed into a vein in the arm.  A tunneled catheter is surgically placed into a vein in the chest or neck and then passed under the skin.