The flow rate o f oxygen is usually adjusted to increase or decrease the amount of oxygen that patients are receiving. Standard oxygen sources can deliver from Â½ liter per minute of O2 to 5 liters/minute (L/min). Every liter/minute of oxygen increases the percentage of O2 the patient breathes by 3 â 4 %. Room air is 21% O2. So if a patient is on 4 L/min O2 flow, then he or she is breathing air that is about 33 â 37% O2. The normal practice is to adjust O2 flow for patients to be comfortably above an oxygen blood saturation of 90% at rest. It is often, however, the case that patients need more oxygen for exercise.
The current population of Italy is 59,322,297 as of Tuesday, January 16, 2018, based on the latest United Nations estimates. Italy population is equivalent to 0.79% of the total world population. Italy ranks number 23 in the list of countries (and dependencies) by population. The population density in Italy is 203 per Km2 (527 people per mi2). The total land area is 294,152 Km2 (113,572 sq. miles) 71 % of the population is urban (42,447,483 people in 2017) The median age in Italy is 46.3 years.
Italy is located at a meeting point of African and Eurasian plate, in fact, island of Sicily is located northeast of Tunisia in Africa. Italy covers a total area of 301,340 sq. km. and is the seventy second largest country of the world.