AIIMS Delhi NO - 2018
Medical Surgical Nursing
Easy
Identify the Red colored waveform in below denote picture?
Appeared in: AIIMS Delhi NO - 2018
Explanation
- On a standard multi-parameter patient monitor, waveforms are color-coded for quick identification.
- The red color is universally assigned to represent Invasive Blood Pressure (IBP), also known as Arterial Blood Pressure (ABP).
- The IBP waveform provides a continuous, beat-to-beat display of a patient's blood pressure via an indwelling arterial catheter.
- This waveform is characterized by a rapid upstroke, a peak systolic pressure, a dicrotic notch (representing aortic valve closure), and a diastolic pressure.
Why Other Options Were Wrong
- Option B: NIBP (Non-Invasive Blood Pressure) is measured intermittently with a cuff and does not produce a continuous waveform on the monitor; it only displays numerical values.
- Option C: Pulse Rate is a numerical value (beats per minute), not a waveform. It is typically derived from the ECG (green waveform) or the SpO₂ (blue waveform).
- Option D: The waveform associated with Oxygen Saturation (the plethysmograph) is standardly color-coded as blue or cyan, not red.
Related Visual
Clinical Relevance
- Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Standard color-coding of waveforms on a multi-parameter patient monitor as background academic context rather than a clinical decision trigger.
- Rapidly identifying waveforms by color is a critical skill for nurses in acute and critical care settings, enabling quick assessment of a patient's status, especially during emergencies.
- Misinterpretation of waveforms can lead to delayed or incorrect interventions. For example, confusing a dampened IBP waveform with a low NIBP reading could have serious consequences.
- What if? If a patient's red (IBP) waveform suddenly becomes flat ('dampened'), the nurse's first action should be to check the patient and the monitoring system (e.g., catheter position, tubing for kinks or air bubbles, transducer level) rather than immediately treating for hypotension, as it is often a technical issue.
How to Approach the Question
- First, identify the core question, which is to identify a specific colored waveform on a patient monitor.
- Recognize that this is an image-based question that relies on recall of standard medical conventions rather than direct interpretation of the grainy image.
- Access your knowledge base about the standard color-coding used in multi-parameter monitors.
- Systematically evaluate each option against the standard color convention: Red = IBP, Green = ECG, Blue = SpO₂, Yellow/White = Respiration.
- Eliminate the incorrect options by identifying what they represent: NIBP (no waveform), Pulse Rate (a number), and Oxygen Saturation (blue/cyan waveform).
- Confirm that the remaining option (IBP) matches the color specified in the question (Red).
Concept Tested & Keywords
- Concept Tested: Standard color-coding of waveforms on a multi-parameter patient monitor.
- Stem keywords: patient monitor, waveform, Red colored
- Lead-in keywords: Identify
- Negative lead-in flag: false
Question ID
QKRt1kTgoUaBvFm4J7_1E1
Reference Book
E6 Medicine Davidson Principles Practice 24e p. 195-197
E6 Nursing Vital Signs p. 66-68
E6 Nelson Textbook of Pediatrics(2024) — Volume 1 p. 661-663
Practise the full AIIMS Delhi NO - 2018
Attempt every question from this paper in a timed mock, then review the full solution for each one.
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