rh-negative

Thân thiện

A nurse checks a patient's blood type and notes it as rh-negative.

Definition

Adjective 1. Lacking the Rh factor: Describes a person whose red blood cells do not have the Rh factor (Rhesus factor) antigen on their surface. This is a specific blood type characteristic. * Example: She is Rh-negative, so she requires special care during pregnancy if the baby is Rh-positive. * Example: Rh-negative blood can be safely transfused to another Rh-negative person.

Usage Notes

• The term is primarily used in medical, biological, and healthcare contexts, especially concerning blood typing, transfusions, and pregnancy.
• It is often written with a hyphen: Rh-negative. The "Rh" stands for "Rhesus," referring to the Rhesus monkey in which the factor was first identified.
• It is typically used to describe a person's blood type or the person themselves. It is the opposite of Rh-positive.

Examples in Context

• Medical Diagnosis/Description:
  • The blood test confirmed that the patient is Rh-negative.
  • Donors with Rh-negative blood are always in high demand.
• Medical Advice/Treatment:
  • An Rh-negative mother may need an injection to prevent complications in future pregnancies.
  • It is critical to match Rh-negative recipients with Rh-negative blood for transfusion.

Advanced Usage

• The term can be used attributively (before a noun) or predicatively (after a linking verb like "is" or "are").
  • Attributive: The Rh-negative donor saved a life.
  • Predicative: The donor is Rh-negative.

Variants and Related Words

• Rh factor (noun): The antigen present (or absent) on red blood cells that determines Rh status.
• Rh-positive (adjective): Describing a person whose red blood cells the Rh factor antigen.
• Blood type / Blood group (noun): The general classification of blood, including the ABO system (A, B, AB, O) and the Rh system (positive or negative).

Synonyms

• RhD-negative: A more precise clinical term specifying the absence of the RhD antigen, which is the most immunogenic part of the Rh factor.

Antonyms

• Rh-positive

Học thuật

Adjective

1. of persons (or their blood) lacking the Rh factor present in their red blood cells