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).
A peripheral venous catheter. A urinary catheter. A male catheter is placed over the penis. A patient's body type should be considered when selecting an appropriate urinary catheter. When selecting a catheter for a blood transfusion, the primary consideration should be the size of the patient's vein. Recent scientific developments have affected the sizing standards for blood transfusion catheters.