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).
Central lines are much different from standard IVs that are used to give medicine into a vein near the skinâs surface, usually for short periods of time. A central venous catheter can remain for weeks or months, and some patients receive treatment through the line several times a day. Central venous catheters are important in treating many conditions, particularly in intensive care units (ICUs).