Echocardiogram. Guide. An echocardiogram (also called an echo) is a type of ultrasound test that uses high-pitched sound waves that are sent through a device called a transducer.The device picks up echoes of the sound waves as they bounce off the different parts of your heart.chocardiogram. Guide. An echocardiogram (also called an echo) is a type of ultrasound test that uses high-pitched sound waves that are sent through a device called a transducer.
The United Nations is an international organization designed to make the enforcement of international law, security, economic development, social progress, and human rights easier for countries around the world.rior to the United Nations (UN), the League of Nations was the international organization responsible for ensuring peace and cooperation between world nations. It was founded in 1919 to promote international cooperation and to achieve peace and security..
The WHO's constitution states that its objective is the attainment by all peoples of the highest possible level of health.. As well as coordinating international efforts to monitor outbreaks of infectious diseases, such as SARS, malaria, and AIDS, the WHO also sponsors programs to prevent and treat such diseases. The WHO supports the development and distribution of safe and effective vaccines, pharmaceutical diagnostics, and drugs.