Anaphylactic shock is a subgroup of which type of shock?
Hypovolemic
Obstructive
Cardiogenic
Distributive
The Correct Answer is D
Choice A rationale:
Hypovolemic shock is a type of shock that occurs when there is a significant loss of blood or fluid volume, leading to decreased cardiac output and tissue perfusion. This can be caused by severe bleeding, dehydration, burns, or other conditions that result in fluid loss. While anaphylaxis can involve some fluid shifts, it is not primarily characterized by a loss of blood or fluid volume.
Key features of hypovolemic shock that distinguish it from anaphylactic shock include:
Prominent signs of dehydration: Dry skin and mucous membranes, decreased urine output, sunken eyes, and poor skin turgor.
Hemodynamic changes: Tachycardia, narrow pulse pressure, and cold extremities due to vasoconstriction to maintain blood pressure.
Laboratory findings: Elevated hematocrit and blood urea nitrogen (BUN) levels, indicating hemoconcentration and decreased kidney perfusion.
Choice B rationale:
Obstructive shock is a type of shock that occurs when there is an obstruction to blood flow, preventing adequate circulation to the body's tissues. This can be caused by conditions such as pulmonary embolism, cardiac tamponade, or tension pneumothorax. Anaphylaxis does not involve a physical obstruction to blood flow.
Key features of obstructive shock that distinguish it from anaphylactic shock include:
Evidence of the underlying obstruction: Jugular venous distension (cardiac tamponade), muffled heart sounds (cardiac tamponade), or respiratory distress (pulmonary embolism or tension pneumothorax).
Distinctive hemodynamic changes: Equalization of diastolic pressures between the right and left ventricles (cardiac tamponade).
Specific imaging findings: Enlarged cardiac silhouette on chest X-ray (pericardial effusion), filling defects in the pulmonary arteries on CT angiography (pulmonary embolism), or hyperexpanded lung fields with a deviated trachea on chest X-ray (tension pneumothorax).
Choice C rationale:
Cardiogenic shock is a type of shock that occurs when the heart is unable to pump enough blood to meet the body's needs. This can be caused by conditions such as heart attack, heart failure, or cardiomyopathy. Anaphylaxis does not primarily involve a failure of the heart's pumping function.
Key features of cardiogenic shock that distinguish it from anaphylactic shock include:
Evidence of heart failure: Pulmonary edema, elevated jugular venous pressure, and a third heart sound (S3 gallop).
Electrocardiogram (ECG) changes: ST-segment elevation or depression, Q waves, or other signs of myocardial ischemia or infarction.
Elevated cardiac enzymes: Troponin and creatine kinase-MB (CK-MB) levels, indicating heart muscle damage.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice B rationale:
Phlebitis is the inflammation of a vein, often caused by an IV catheter. It's characterized by redness, swelling, warmth, and pain along the vein.
Promptly discontinuing the IV infusion is crucial to prevent further irritation and potential complications such as: Thrombophlebitis (inflammation with clot formation)
Infection
Infiltration (leakage of fluids into surrounding tissues) Extravasation (leakage of vesicant or damaging medications)
Continuing the infusion could exacerbate the inflammation and increase the risk of these complications.
Choice A rationale:
Elevation of the extremity can help reduce swelling, but it does not address the underlying inflammation. It's often used as an adjunct measure after discontinuing the IV.
Choice C rationale:
Warm, moist compresses can provide some comfort and potentially promote blood flow, but they are not recommended as a first-line treatment for phlebitis. They may even worsen inflammation in some cases.
Choice D rationale:
Inserting an IV catheter in the opposite extremity is necessary if the patient still requires IV therapy, but it should not be done before addressing the phlebitis in the current site. This could lead to multiple sites of inflammation and increased risk of complications.
Correct Answer is D
Explanation
Choice A rationale:
It is not necessary to remind a patient to avoid turning from side to side after femoral artery catheterization. Restricting movement in this way could actually increase the risk of complications such as deep vein thrombosis (DVT).
Early ambulation is generally encouraged to promote circulation and prevent blood clots.
Patients are typically allowed to turn and reposition themselves as needed for comfort, unless there are specific contraindications.
Choice B rationale:
Keeping the patient in a high-Fowler's position for 6 hours is not a standard recommendation following femoral artery catheterization.
The patient's position should be based on their individual needs and comfort level.
In some cases, a slight elevation of the head of the bed may be helpful to promote venous return, but prolonged high-Fowler's positioning is not necessary.
Choice C rationale:
Passive range-of-motion exercises are not typically performed on the affected extremity immediately following femoral artery catheterization.
This is because there is a risk of dislodging the catheter or causing bleeding at the puncture site.
Once the catheter has been removed and the puncture site has healed, gentle range-of-motion exercises may be recommended to help maintain joint mobility.
Choice D rationale:
Checking pedal pulses every 15 minutes is essential to assess for adequate circulation to the lower extremities following femoral artery catheterization.
This is because there is a risk of complications such as thrombosis or embolism, which can compromise blood flow to the legs and feet.
If the pedal pulses are weak or absent, it could indicate a serious problem that requires immediate intervention.
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