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TL;DR

Informed Consent: Voluntary agreement to treatment after receiving information about nature, risks, benefits, alternatives, and refusal consequences.

By Valenke Exam Prep Team·Last updated 2026-06-02

Informed Consent

MEDICAL ASSISTANTCNA NNAAPNREMT EMT

Definition

Voluntary agreement to treatment after receiving information about nature, risks, benefits, alternatives, and refusal consequences.

Safety Considerations

Safety considerations for informed consent in the medical office include proper technique and universal precautions.

Subcutaneous injections: angle 45 degrees (or 90 with short needle/obese), sites include Upper arm (posterior), Abdomen (2 inches from umbilicus), Anterior thigh. Maximum volume: 0.5-1.0 mL. Needle: 25-27G, 5/8 inch.

Calculation Methods

Reference values and calculations for informed consent. CBC normal ranges:

Practical Example

Clinical Procedure: Temperature measurement is relevant to informed consent.

Technique: Oral (under tongue, lips closed, 3-5 min), tympanic (pull ear up and back for adults), temporal (across forehead)

Normal values: Oral: 97.8-99.1 F. Rectal: +1 F. Axillary: -1 F. Tympanic: close to core.

Differential Diagnosis

When studying informed consent, carefully distinguish it from related but distinct concepts: resident rights, patient confidentiality, scope of practice. Exam questions often test your ability to select the most specific and appropriate answer when multiple options seem partially correct. Look for the option that most completely addresses the scenario presented.

Why It Matters

Tested on MA, CNA, and EMT exams.

Related Terms

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Frequently Asked Questions

What injection technique applies to informed consent?
For informed consent: Intramuscular: angle 90 degrees, sites: Vastus lateralis (thigh), Deltoid (upper arm), Ventrogluteal (preferred for adults), Dorsogluteal (avoided due to sciatic nerve risk). Max volume: Deltoid max 1mL, VG/VL max 3mL. Needle: 21-23G, 1-1.5 inch.
What medical terminology applies to informed consent?
For informed consent: Prefixes: brady- (slow), poly- (many), tachy- (fast). Suffixes: -osis (abnormal condition), -otomy (incision into), -penia (deficiency).
What coding system is used for informed consent?
For informed consent: ICD-10-CM: Diagnosis coding with alphanumeric codes, 3-7 characters, maintained by WHO/NCHS. Examples: J06.9: Upper respiratory infection; E11.65: Type 2 diabetes with hyperglycemia; S52.501A: Fracture of lower end of radius, initial encounter.