A Patient Has Had Recent Mechanical Heart Valve Surgery and Is

question 8

Multiple Choice

A patient has had recent mechanical heart valve surgery and is receiving anticoagulant therapy.While monitoring the patient's laboratory work,the nurse interprets that the patient's international normalized ratio (INR) level of 3 indicates that:

• A) the patient is not receiving enough warfarin to have a therapeutic effect.
• B) the patient's warfarin dose is at therapeutic levels.
• C) the patient's intravenous heparin dose is dangerously high.
• D) the patient's intravenous heparin dose is at therapeutic levels.

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Definitions:

Returns to Scale

A concept in economics that describes how the output of a firm changes as all its inputs are increased proportionally.

Short Run

A period in economics during which at least one factor of production is fixed, limiting the adjustment processes of the economy.

Production Function

A mathematical representation of the relationship between inputs used in production and the output generated.

Returns to Scale

The rate at which output increases as inputs are proportionally increased in the production process.