A patient is admitted for pain in the arm and jaw. The patient is later diagnosed with angina.
What type of pain does the arm and jaw pain most likely represent?
Intractable
Phantom
Referred
Cramping
The Correct Answer is C
Choice A rationale:
Intractable pain is pain that is persistent and does not respond to usual pain management methods. While angina can be intractable in some cases, it does not typically manifest as pain in the arm and jaw. Moreover, the patient in this scenario has not yet undergone pain management efforts, so it's premature to classify the pain as intractable.
Choice B rationale:
Phantom pain is pain that is felt in a part of the body that has been amputated or is no longer there. The patient in this scenario has not experienced any amputations, so phantom pain is not a valid explanation for the arm and jaw pain.
Choice C rationale:
Referred pain is pain that is felt in a part of the body that is different from the source of the pain. This is the most likely explanation for the arm and jaw pain in this patient. The heart and the arm and jaw share nerve pathways, so pain signals from the heart can be misinterpreted by the brain as coming from these other areas. This is a common phenomenon in patients with angina.

Choice D rationale:
Cramping pain is a type of pain that is often described as a muscle tightening or squeezing sensation. It is not typically associated with angina. While angina can sometimes cause chest tightness, it's not characterized by cramping in the arm and jaw.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A rationale:
Respiratory acidosis is characterized by a low pH (less than 7.35), a high PaCO2 (greater than 45 mm Hg), and a normal or high HCO3 (22-26 mEq/L). It occurs when there is a buildup of carbon dioxide in the blood due to impaired ventilation.
The patient's ABGs do not align with respiratory acidosis because the pH is elevated (7.6), and the PaCO2 is within the normal range (40 mm Hg).
Choice B rationale:
Respiratory alkalosis is characterized by a high pH (greater than 7.45), a low PaCO2 (less than 35 mm Hg), and a normal or low HCO3 (22-26 mEq/L). It occurs when there is excessive loss of carbon dioxide through hyperventilation.
The patient's ABGs do not align with respiratory alkalosis because the HCO3 is elevated (32 mEq/L), which is not typical for this condition.
Choice C rationale:
Metabolic acidosis is characterized by a low pH (less than 7.35), a normal or low PaCO2 (less than 40 mm Hg), and a low HCO3 (less than 22 mEq/L). It occurs when there is an excess of acid in the body or a loss of bicarbonate.
The patient's ABGs do not align with metabolic acidosis because the pH is elevated (7.6), and the HCO3 is elevated (32 mEq/L).
Choice D rationale:
Metabolic alkalosis is characterized by a high pH (greater than 7.45), a normal or high PaCO2 (40-45 mm Hg), and an elevated HCO3 (greater than 26 mEq/L). It occurs when there is an excess of bicarbonate in the body or a loss of acid.
The patient's ABGs align with metabolic alkalosis because of the high pH (7.6), normal PaCO2 (40 mm Hg), and elevated HCO3 (32 mEq/L).
Correct Answer is B
Explanation
Choice B rationale:
Stridor is a high-pitched, whistling sound that is heard during inspiration. It is a sign of upper airway obstruction, indicating a potentially life-threatening complication that requires immediate intervention.
Here's a detailed explanation of why stridor is the most concerning finding and why the other choices are not as indicative of a serious problem:
Stridor:
Mechanism: Stridor occurs when there is narrowing or obstruction of the upper airway, typically at the level of the larynx or trachea. This narrowing can be caused by various factors, including:
Laryngospasm: A sudden constriction of the vocal cords, often triggered by irritation or inflammation. Post-extubation edema: Swelling of the tissues in the airway after removal of the endotracheal tube.
Mucus plugging: Accumulation of thick secretions in the airway, which can partially block airflow.
Vocal cord dysfunction: Impairment of the vocal cords' movement, which can affect their ability to open and close properly.
Significance: Stridor is a serious sign because it indicates that airflow is significantly restricted. If left untreated, upper airway obstruction can lead to hypoxia (low oxygen levels) and respiratory failure.
Nursing intervention: If stridor is present, the nurse should immediately notify the provider and prepare for potential interventions to secure the airway, such as:
Reintubation: Reinserting the endotracheal tube to bypass the obstruction.
Nebulized racemic epinephrine: Medication to reduce swelling in the airway.
Heliox: A mixture of helium and oxygen that can improve airflow through a narrowed airway. Steroids: Medications to reduce inflammation in the airway.
Crackles (Choice A):
Description: Crackles are rattling, crackling sounds heard in the lungs, often during inspiration. They are typically associated with lower airway problems, such as pneumonia or pulmonary edema.
Significance: While crackles can indicate respiratory issues, they are not as immediately concerning as stridor in the context of post-extubation care.
Strong cough (Choice C):
Significance: A strong cough is generally a positive sign after extubation, as it indicates that the patient is able to clear secretions from their airway effectively.
Deep breathing (Choice D):
Significance: Deep breathing is also a positive sign, as it promotes lung expansion and oxygenation.
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