It is an air gap that allows air to escape rather than building up in the pipe and creating an air hammer within the pipes (banging noise), and problems with drainage. (think about pouring out of a can that doesnt have the second hole punched in it.
Suction Therapy : Suction therapy is provided to assist in the removal of bronchial secretions that cannot be expectorated by the patient spontaneously. Suct...
Electroconvulsive therapy (ECT) is a form of psychiatric treatment that involves inducing seizures with the use of electrical stimulation while a patient is under general anesthesia. Originally known as electroshock therapy, ECT was first introduced by a pair of Italian psychiatrists in 1938.