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. PICC line. A peripherally inserted central catheter, or PICC line (say pick), is a central venous catheter inserted into a vein in the arm rather than a vein in the neck or chest.Tunneled catheter. This type of catheter is surgically inserted into a vein in the neck or chest and passed under the skin.here are several types of central venous catheters. PICC line. A peripherally inserted central catheter, or PICC line (say pick), is a central venous catheter inserted into a vein in the arm rather than a vein in the neck or chest.