The nurse obtains a monitor strip on a patient who has had a myocardial infarction and makes the following analysis: P wave not apparent, ventricular rate 196, R-R interval regular, P-R interval not measurable, QRS complex wide and distorted, QRS duration 0.18 second. The nurse interprets the patient's cardiac rhythm as;
ventricular tachycardia.
atrial fibrillation.
atrial tachycardia.
ventricular fibrillation.
The Correct Answer is A
The characteristics described in the monitor strip analysis suggest ventricular tachycardia. The absence of a visible P wave and the wide and distorted QRS complex indicates that the electrical impulse is originating in the ventricles rather than the atria. The ventricular rate of 196 and regular R-R intervals further support the diagnosis of ventricular tachycardia.
B. Atrial fibrillation in (option B) is incorrect because it is characterized by irregularly irregular R-R intervals and the absence of discernible P waves. The QRS complex is typically narrow
C. Atrial tachycardia in (option C) is incorrect because it would have a rapid atrial rate with regular R-R intervals, and P waves may or may not be discernible. The QRS complex is typically narrow.
D. Ventricular fibrillation in (option D) is incorrect because it would present as a chaotic, rapid, and irregular electrical activity with no discernible P waves, QRS complexes, or regular R-R intervals. It is a life-threatening emergency that requires immediate defibrillation.
Therefore, based on the provided information, the nurse would interpret the patient's cardiac rhythm as ventricular tachycardia. However, it is important to note that an accurate interpretation should be made by a qualified healthcare professional, and the patient's clinical context should also be considered.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
The nurse should listen over both lung fields to ensure that air entry is present bilaterally, indicating that the tube is correctly positioned in the trachea. This comes after observing chest movements.
B. Using an end-tidal CO2 monitor to check for placement in the trachea in (option B) is incorrect because End-tidal CO2 monitoring can provide confirmation of correct tube placement in the trachea by detecting exhaled CO2 levels. However, it requires additional equipment and setup, which may not be readily available at the bedside or immediately accessible.
C. Observing the chest for symmetrical movement with ventilation is the initial action after placing an endotracheal tube.
D. Obtaining a portable chest radiograph to check tube placement (option D) is incorrect because Chest radiographs are commonly used to confirm endotracheal tube placement, especially for long-term confirmation or if there are concerns about placement. However, obtaining a portable chest radiograph may involve delays and is not the initial action to be taken for immediate verification.
Therefore, the best initial action by the nurse to verify the correct placement of an endotracheal tube (ET) after insertion is to auscultate for the presence of bilateral breath sounds.
Correct Answer is C
Explanation
Septic shock is a life-threatening condition characterized by severe infection, systemic inflammation, and inadequate tissue perfusion. In this critical situation, one of the initial priorities is to restore intravascular volume and improve tissue perfusion. Initiation of an intravenous line allows for the administration of fluids and other necessary medications to support the patient's hemodynamic stability.
While the other interventions mentioned are also important components of septic shock management, the immediate priority is to address hypotension and tissue hypoperfusion through fluid resuscitation:
A. Obtaining wound and blood cultures in (option A) is incorrect because: Cultures are important to identify the source and causative organisms of the infection. However, fluid resuscitation should take priority over obtaining cultures, as it is necessary to stabilize the patient's hemodynamics.
B. Removing or controlling potentially infected sources in (option B) is incorrect because: Identifying and controlling the source of infection is crucial in septic shock management to prevent further progression. However, initiating fluid resuscitation is more time-sensitive and should be prioritized.
D. Drawing blood for hematology and chemistry studies in (option D) is incorrect because Laboratory studies are important for evaluating organ function and guiding treatment. However, the immediate focus should be on fluid resuscitation to address the underlying hypoperfusion and stabilize the patient's condition.
Therefore, the intervention considered a priority when treating a patient who presents with septic shock is the initiation of an intravenous line and fluid administration to restore intravascular volume and improve tissue perfusion.
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