A medical practitioner who specializes in diagnosis and treatment of immunological conditions. An immunologist is sometimes referred to as an allergist.

An agent that can suppress or prevent the immune response. Immunosuppressant medications are used to prevent rejection of a transplanted organ and to treat autoimmune diseases.

A subcutaneous, single-lead, electrocardiographic (ECG) monitoring device used for diagnosis in patients with recurrent unexplained episodes of palpitations or syncope, for long-term monitoring in patients at risk for or with documented atrial fibrillation (AF), and for risk stratification in patients who have sustained a myocardial infarction (MI) and those who have certain genetic disorder)

A doctor who specializes in the diagnosis and treatment of infectious diseases. These doctors are sometimes referenced as epidemiologists.

An individual willingly agrees to participate in an activity after first being advised of the risks and benefits. See also

In genetics, to receive genetic material from parents through biological processes.

A substance that increases strength of the contractions in the heart.

Intolerance or sensitivity to a substance is less extreme than an allergic response. Symptoms of intolerance or sensitivity are bloating, nausea, cramping, gas, diarrhea. Sensitivities to substances may worsen overtime and may result in allergic responses.

Intrauterine growth retardation is also referenced as small for gestational age (SGA). This occurs when the unborn baby is at or below the 10th weight percentile for his age (in weeks).

Echocardiography used in cardiac catheterization.

A lack of sufficient iodine in the diet, which can lead to inadequate production of thyroid hormone (hypothyroidism) and enlargement of the thyroid gland (goiter).

An inadequate blood supply to an organ or part of the body, esp. the heart muscles.