None. Plethysmography is a noninvasive diagnostic manometric study used to measure changes in the size of blood vessels by determining volume changes in the blood vessels of the eye, extremities, and neck or to measure gas volume changes in the lungs.
1. countable noun [usually with poss] A guardian is someone who has been legally appointed to look after the affairs of another person, for example a child or someone who is mentally ill. 2. countable noun. The guardian of something is someone who defends and protects it.
A legal guardian, called a conservator in some states, is someone with the legal authority to care and make decisions for a minor child or incapacitated adult.Becoming a legal guardian over someone else involves filling out a number of forms and going through one or more court proceedings. legal guardian, called a conservator in some states, is someone with the legal authority to care and make decisions for a minor child or incapacitated adult.