3 Safety in Noninvasive Diagnostic Testing Free Online FlashCards

What makes a diagnostic test noninvasive?

They assess the body without surgery or an instrument entering a blood vessel or organ.

What type of energy does ultrasound use?

Ultrasound uses sound waves, not ionizing radiation. Standard diagnostic ultrasound has no known harmful effects.

What radiation-related safety consideration applies to X-rays and CT?

Both use ionizing radiation. For an appropriately selected exam, the expected diagnostic benefit generally outweighs the small potential risk.

Which symptoms after iodinated CT contrast require immediate attention?

Hives, swelling, wheezing, trouble breathing, or faintness require immediate attention.

What should a patient with an implant do before MRI?

Report it before entering the scanner area so staff can determine whether the device is safe for the scan.

What should be disclosed before MRI with planned gadolinium contrast?

Report kidney disease and any prior reaction to that contrast agent.

What does a resting ECG record, and what preparation is usually needed?

A resting ECG generally needs no special preparation; it records the heart’s electrical activity using skin electrodes.

What should a patient track during Holter or event monitoring?

Follow instructions about keeping the device dry, recording symptoms, and noting activities or medication use.

What EEG-related risk should a patient with a seizure disorder discuss?

Flashing lights or deliberate rapid breathing may trigger a seizure in someone with a seizure disorder; tell staff about seizure history.

What does a sleep study measure?

It uses sensors to record breathing, oxygen level, heart rate, and other signals during sleep.

What should a patient do if forceful breathing during a PFT causes dizziness?

Tell the technologist promptly so testing can be paused and the patient assessed.

What is monitored during an exercise stress test, and which symptoms should be reported?

Staff monitor heart rhythm, blood pressure, symptoms, and exercise tolerance; report chest discomfort, unusual shortness of breath, dizziness, or palpitations immediately.