Which of the following findings is most consistent with disseminated intravascular coagulation (DIC)?
elevated D-dimer
decreased prothrombin time
decreased partial thromboplastin time
elevated fibrinogen level
The Correct Answer is A
Disseminated intravascular coagulation (DIC) is a condition characterized by both widespread activation of the coagulation system and excessive clotting, leading to the consumption of clotting factors and platelets. This results in a prothrombotic state, which can lead to organ dysfunction and bleeding manifestations.
Elevated D-dimer levels are a characteristic finding in DIC. D-dimer is a fibrin degradation product that is elevated when there is excessive fibrin formation and breakdown. Elevated D-dimer indicates ongoing fibrinolysis and activation of the clotting system.
B. Decreased prothrombin time in (option B) is incorrect because: DIC is characterized by consumption of clotting factors, which can result in prolongation of the prothrombin time (PT) as well as other coagulation tests.
C. Decreased partial thromboplastin time in (option C) is incorrect because Similar to the prothrombin time, the partial thromboplastin time (PTT) can also be prolonged in DIC due to the consumption of clotting factors.
D. Elevated fibrinogen level in (option D) is incorrect because, In DIC, there is consumption of fibrinogen along with other clotting factors. Therefore, elevated fibrinogen levels are not consistent with the pathophysiology of DIC.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Hemorrhagic shock is characterized by severe blood loss, leading to inadequate tissue perfusion and hypovolemia. The primary goal in the initial management of hemorrhagic shock is to restore intravascular volume and improve tissue perfusion. Administering intravenous fluids, such as normal saline solution, is a critical intervention to address hypovolemia and improve blood pressure.
A. Give Plasmanate 1 unit now in (option A) is incorrect because: Plasmanate is a plasma-derived product used to replace coagulation factors. While it may be necessary to address coagulation abnormalities, administering intravenous fluids to restore volume takes priority over specific blood products.
B. Prepare for endotracheal intubation in (option B) is incorrect because Endotracheal intubation may be required in cases of impending respiratory failure or compromised airway, but it should not be the first action in addressing hypovolemic shock.
D. Type and crossmatch for 4 units of packed red blood cells (PRBCs) in (option D) is incorrect because transferring packed red blood cells is an important intervention to address blood loss and improve oxygen-carrying capacity. However, before administering blood products, it is crucial to stabilize the patient's hemodynamics through fluid resuscitation.
Therefore, in a patient with hemorrhagic shock, the nurse's first priority among the given options is to give normal saline solution of 250 mL/hr to restore intravascular volume and improve tissue perfusion.
Correct Answer is C
Explanation
Heart rate: 72 beats per minute Stroke volume: 90 mL/contraction
Cardiac output = Heart rate × Stroke volume
Cardiac output = 72 beats/minute × 90 mL/contraction
To simplify the calculation, you can convert the units:
72 beats/minute × 90 mL/contraction = (72 × 90) beats/minute × mL/contraction
Now, perform the multiplication:
72 × 90 = 6,480
Therefore, the cardiac output is 6,480 mL per minute.
The correct answer is:
C. 6,480 mL
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