A Patient Reports Feeling Dizzy After Standing Quickly

question 17

Multiple Choice

A patient reports feeling dizzy after standing quickly.Which of the following could provide a clue regarding the cause?

• A) Hemoglobin level of 14.0 g/dL and hematocrit level of 42.3%
• B) Poor skin turgor with extended tenting
• C) Supine blood pressure of 146/93 mm Hg
• D) Resting heart rate of 96 beats/min

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Definitions:

Carbohydrates

Organic compounds consisting of carbon, hydrogen, and oxygen, in a ratio of 1:2:1 respectively, serving as a major energy source for organisms.

Lipid

A group of naturally occurring molecules that include fats, waxes, sterols, and fat-soluble vitamins, used for energy storage and cell signaling.

Protein

Large biomolecules, or macromolecules, consisting of one or more long chains of amino acid residues, essential for all living organisms.

Nucleic Acid Coenzymes

Molecules that work alongside enzymes in biochemical reactions, especially in the synthesis and repair of DNA and RNA.