A blood transfusion is the transfer of blood or one of its components from a healthy person (donor) to a sick person (recipient). It is done to increase the blood's ability to carry oxygen, restore the body's blood volume, and correct clotting problems.
Evidence from a NICE clinical practice guideline suggests that patients have a limited understanding of many aspects of transfusion, but want to be part of an informed decision-making process. Evidence also indicates that patients are reassured ...
Genetic testing can help identify a disease risk or inherited condition. However, sometimes a genetic test is not the best way to identify a disease risk or inherited condition. A routine blood test or procedure might be just as good.
A research article showed that approximately 0.8% of all genetic test requests received for germline mutations were unnecessary duplicate samples from patients who had already been successfully tested.
GBS is recognised as the most frequent cause of severe early-onset infection in newborn infants. GBS is present in the bowel flora of 20–40% of adults (colonisation) and those who are colonised are called ‘carriers’. This includes pregnant women.
Prevention of late-onset group B streptococcal (GBS) disease and treatment of established GBS is not considered beyond initial antibiotic therapy.
Urine toxicology tests are usually performed on patients suspected of having taken a drug overdose. The results of these tests very rarely change treatment. There are also a number of newer recreational drugs that are not detected by these tests.
Standard investigations for patients suspected of having suffered a sub-arachnoid haemorrhage involve a CT scan and then, if the CT is normal, a lumbar puncture.
Lumbar punctures are painful procedures, usually require hospital admission and some people develop worse headaches afterwards.
CT Scanners have become better at detecting blood in the brain. A normal scan performed with 6 hours of onset of a severe headache means that the risk of having a sub-arachnoid haemorrhage is extremely low.