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..
To ensure international peace and security.   The main purpose of the United Nations is to facilitate cooperation in international law, international security, economic de â¦ velopment, social progress, human rights and ultimately world peace.econd the United Nations is in a basic sense is a world government. It regulates the activity of the world's governments. That being said, the amount of power the UN can exert on a sovereign nation is basically up to that nation.