JIPMER Pondicherry NO - 2022
Medical & Surgical Nursing
Easy
Focused abdominal sonography for trauma (FAST) uses which of the following to view inside a person's abdominal cavity to screen for injuries?
Appeared in: JIPMER Pondicherry NO - 2022
Explanation
- Ultrasound because FAST stands for Focused Assessment with Sonography for Trauma, and 'sonography' is the medical term for ultrasound imaging.
- Ultrasound is a rapid, non-invasive, and portable imaging modality that uses high-frequency sound waves to detect free fluid (like blood) in the abdomen and around the heart after trauma.
- A key advantage of ultrasound in this setting is its safety profile; it does not use ionizing radiation, making it suitable for all patients, including pregnant women, and for repeated examinations at the bedside.
- The primary goal of a FAST exam is to quickly identify life-threatening bleeding that may require immediate surgical intervention.
Why Other Options Were Wrong
- Option A: X-rays use ionizing radiation to create images. While commonly used in trauma to evaluate for fractures or pneumothorax (chest X-ray), they are not the technology used in sonography.
- Option C: Microwaves are a form of electromagnetic radiation used for heating (like in microwave ovens) and in communication technologies. They are not used for diagnostic medical imaging of internal organs.
- Option D: While technically correct that sound waves are mechanical vibrations, 'Ultrasound' is the specific and precise medical term for the imaging technology used. 'Mechanical vibrations' is a broad physics term and not the name of the medical procedure.
Related Visual
Clinical Relevance
- Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Technology used in Focused Assessment with Sonography for Trauma (FAST) exam as background academic context rather than a clinical decision trigger.
- Nurses in emergency and trauma settings must recognize that a positive FAST exam in a hemodynamically unstable patient is a critical finding, often indicating the need for immediate transfer to the operating room for an exploratory laparotomy.
- It is important for nurses to understand that a negative FAST exam does not definitively rule out all internal injuries. If the patient is stable, a more detailed CT scan is often the next step for a comprehensive evaluation. Continuous monitoring of vital signs remains crucial.
- What if? If a trauma patient is hemodynamically stable but the FAST exam is inconclusive or limited (e.g., due to obesity or subcutaneous air), the standard of care is to proceed with a contrast-enhanced CT scan of the abdomen and pelvis to get a more definitive diagnosis.
How to Approach the Question
- First, carefully read the question and identify the key acronym: FAST (Focused abdominal sonography for trauma).
- Break down the full name provided: 'Focused Assessment with Sonography for Trauma'.
- Focus on the word 'Sonography'. Recall or deduce that 'sono-' relates to sound, and 'graphy' relates to imaging. Therefore, sonography is imaging with sound.
- Review the options provided. 'Ultrasound' is the medical term for high-frequency sound wave imaging.
- Compare this with the other options. X-rays, microwaves, and the general term 'mechanical vibrations' are different concepts. 'Ultrasound' is the most specific and accurate medical term that matches 'sonography'.
- Select 'Ultrasound' as the correct answer based on the direct definition within the question's terminology.
Concept Tested & Keywords
- Concept Tested: Technology used in Focused Assessment with Sonography for Trauma (FAST) exam
- Stem keywords: Focused abdominal sonography for trauma, FAST, abdominal cavity, screen for injuries
- Lead-in keywords: which of the following
Question ID
QW0iu1XbmqqixJa-tAgH1a
Reference Book
E6 Medicine Harrison 22e Part 2 p. 1815-1817
E6 Gynecology Williams p. 35-58
Practise the full JIPMER Pondicherry NO - 2022
Attempt every question from this paper in a timed mock, then review the full solution for each one.
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