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.
It has a drainage area of 74,000 kmÂ² in all, 70,000 in Italy, of which 41,000 is in montane environments and 29,000 on the plain. The Po is the longest river in Italy; at its widest point its width is 503 m (1,650 ft). The Po extends along the 45th parallel north. The river flows through many important Italian cities, including Turin (Torino), Piacenza and Ferrara.