Sampling frame Health Dictionary

A procedure performed during a mother’s labour in which a blood sample is taken from a vein in the scalp of the FETUS. This enables tests to be performed that indicate whether the fetus is, for example, suffering from a shortage of oxygen (HYPOXIA). If so, the obstetrician will usually accelerate the baby’s birth.... fetal blood sampling

A method of diagnosing genetic abnormalities in a fetus using a small sample of tissue taken from the chorionic villi at edge of the placenta. Because the cells have the same chromosome makeup as those in the fetus, they can be used to detect genetic abnormalities. Chorionic villus sampling (CVS) is usually performed in the first 3 months of pregnancy in women who are at a higher-than-normal risk of having a child with a chromosomal disorder, such as Down’s syndrome, or a genetic disease, such as thalassaemia. Chromosome analysis of the villi cells takes place in the laboratory. CVS slightly increases the risk of miscarriage. choroid A layer of tissue at the back of the eye, behind the retina. The choroid contains many blood vessels that supply nutrients and oxygen to the retinal cells and to surrounding tissues in the eye. choroiditis Inflammation of the choroid. It is often caused by infections such as toxocariasis or toxoplasmosis, more rarely by sarcoidosis, syphilis, and histoplasmosis. It sometimes has no obvious cause. Treatment includes corticosteroid drugs for the inflammation, and antibiotic drugs for any causative infection.... chorionic villus sampling

The sampling process whereby each unit in the population has an equal chance of being selected.... random sampling

The procedure of selecting a number of subjects from all the subjects in a particular group or “universe”.... sampling

(NSFs) formerly, national standards of care published for a variety of conditions and patient groups (the first were for coronary heart disease and mental health). NSFs were ten-year programmes designed to improve, and reduce variations in, the quality of care by defining long-term strategies for delivery of the standards and by setting specific goals. The NSFs were dropped in the reform of the NHS after 2010 and subsequent establishment of *NHS England.... national service frameworks

(QOF) a system, introduced as part of the new general medical services (nGMS) contract (see general practitioner), whereby practices are rewarded for implementing good medical practice. There are four main domains: clinical, organizational, patient experience, and additional services. Each domain has various criteria based on best practice, which have a number of points allocated for achievement. The points are collated at the end of the financial year and converted into payment for the practice.... quality and outcomes framework