Medical Dictionary Definitions A-Z List
Medical Dictionary Definitions A - Z - «S»:
Sensitivity, analytic: See: Analytic sensitivity....
Sensorineural deafness with XX gonadal dysgenesis
Sensorineural deafness with XX gonadal dysgenesis: See: Perrault syndrome....
Sensorium: The totality of those parts of the brain that receive, process and interpret sensory stimuli. The sensorium is the supposed seat of sensation, the place to which impressions from the external world are conveyed and perceived.
The sensorium also refers to the entire sensory apparatus of th...
Sensory: Relating to sensation, to the perception of a stimulus and the voyage made by incoming (afferent) nerve impulses from the sense organs to the nerve centers.
"Sensory" also is sometimes used to refer to the senses themselves.
"Sensory" came from the Latin "sensorius" which was derived from s...
Sensory integration: A form of occupational
therapy in which special exercises are used to strengthen
the patient's sense of touch (tactile), sense of balance
(vestibular), and sense of where the body and its parts are
in space (proprioceptive). It appears to be effective for
helping patients ...
Sensory neuron: A neuron that receives electrical input signals from sensory cells and from other neurons....
Sentinel lymph node
Sentinel lymph node: The first lymph node ("gland") to receive lymphatic drainage from a tumor.
Which lymph node is the sentinel node in a given case is determined by injecting around the tumor a tracer substance that will travel through the lymphatic system to the first draining (sentinel) node a...
Sentinel lymph node biopsy
Sentinel lymph node biopsy: Examination of the first lymph node ("gland") that receives lymphatic drainage from a tumor to determine whether that node does or does not have tumor cells within it.
Which lymph node is the sentinel node for a given tumor is determined by injecting around the tumor a t...
Sentinel node biopsy
Sentinel node biopsy: See: Sentinel lymph node biopsy....
Separation anxiety: A developmental stage during which a child experiences anxiety when separated from the primary care giver (usually the mother). Separation anxiety is normal between 8 months of age and may last until 14 months old.
In young children, their unwillingness to leave a parent or a ca...
Separation anxiety disorder
Separation anxiety disorder: Excessive anxiety concerning separation from home or from those to whom a child is attached. The child may develop excessive worrying to the point of being reluctant or refusing to go to school, being alone, or sleeping alone. The child may also experience repeated night...
Sepsis: Commonly called a "blood stream
presence of bacteria (bacteremia) or other infectious organisms or
their toxins in the blood (septicemia) or in other tissue of the
Sepsis may be associated
with clinical symptoms of systemic (bodywide) illness, such as feve...
Sepsis, neonatal: A serious
blood bacterial infection in an infant less than 4 weeks of age. Babies with
sepsis may be listless, overly sleepy, floppy, weak, and very
Septal defect, atrial (ASD)
Septal defect, atrial (ASD): A hole in the septum, the wall, between
the atria, the upper chambers of the heart. Commonly called an ASD. ASDs are a major class
of heart deformity that is present at birth (congenital cardiac malformation)....
Septal defect, ventricular (VSD)
Septal defect, ventricular (VSD): A hole in the septum (the wall) between the lower chambers of the heart (the ventricles).
Ventricular Septal Defect is the most common type of heart malformation (congenital heart disease). At least 1 baby in every 500 is born with a VSD.
A VSD lets blood from t...