A specialist registrar is a doctor in the United Kingdom who is receiving advanced training in a specialist field of medicine in order to eventually become a consultant. Medicine is the branch of health science concerned with maintaining human health or restoring it through the treatment of disease and injury. ... A consultant (from the latin consultus meaning legal expert) is a professional who provides expert advice in a particular domain or area of expertise such as accountancy, technology, the law, human resources, marketing, medicine, finance, public affairs, communication, or more esoteric areas of knowledge, for example engineering of different kinds...

After graduation from medical school, they will have undertaken several years of work and training as a pre-registration house officer and senior house officer, and will usually have taken examinations for membership of the royal college of their speciality (eg/ medical registrars will take the MRCP examinations to qualify them to become registrars. Medical school generally refers to a tertiary educational institution (or part of such an institution) which is involved in the education of future medical practitioners (medical doctors). ... Pre-registration house officer (PRHO) is the title given to the medical graduates who have passed their final year exams in the Medical School. ... A senior house officer is a doctor undergoing specialist training in the United Kingdom. ...

Competition of specialist registrar posts is tough. The applicant must first get a training number which allows them to enter specialist training, and then secure a post. The number of posts available is stricly proportional to the number of consultants required in a specific speciality, and therefore in the more popular specialities it can often take many attempts to get a post, leading to what is known as the "SHO bottleneck", whereby doctors are stuck at the grade of senior house officer for a number of years. A senior house officer is a doctor undergoing specialist training in the United Kingdom. ...

Specialist registrars generally stay in post for around 5 years (more or less depending on the speciality), gaining experience at first in a broad speciality (eg/ general medicine), later specialising in a subspeciality (eg/ cardiology) after which they receive the certificate of completion of specialist training (CCST), and are eligible for promotion to consultant. Specialist registars are also required to undertake a period of active research in their field, and many choose to do this by means of a PhD or MD. Internal medicine is concerned with the diagnosis and treatment of internal diseases, that is, those that affect internal organs or the body as a whole. ... Cardiology is the branch of medicine dealing with disorders of the heart and blood vessels. ...