The Vel weak phenotype is due to a heterozygous deletion in the same exon, resulting one functional copy of the SMIM1 gene. If a patient who is Vel negative is transfused with Vel positive red blood cells, they may form anti-Vel alloantibodies.
Hearing aids need to be fitted by someone trained specifically in hearing problems. An audiologist or licensed hearing aid provider can make sure your hearing aids fit and work for your type and degree of hearing loss. You also need to consider cost.
5How to use your Hearing Aid How a hearing aid can help What you can expect Hearing aids cannot give you perfect hearing, but they should help you to hear everyday sounds like the doorbell, the telephone ringing and the kettle boiling.