The nurse is caring for a client in acute respiratory distress syndrome (ARDS). The chest x-ray displays evidence of pulmonary edema. The nurse assesses the client for which clinical manifestation?
Wheezes on inspiration
Blood pressure 170/90
Tachypnea
Bradycardia
The Correct Answer is C
A. Wheezes on inspiration: Wheezing is typically associated with obstructive pulmonary conditions, such as asthma or chronic obstructive pulmonary disease (COPD), and is caused by narrowing of the airways. In ARDS, the pathophysiology involves inflammation and fluid accumulation in the alveoli, which leads to impaired oxygen exchange but not typically to wheezing. Instead, crackles or rales (a fine, wet sound) are more commonly heard on auscultation in ARDS, particularly as fluid builds up in the alveoli.
B. Blood pressure 170/90: Although ARDS can be associated with hemodynamic instability, elevated blood pressure (170/90 mmHg) is not a typical finding. In fact, ARDS is more commonly associated with low blood pressure or hypotension, particularly if the client is experiencing shock or is on mechanical ventilation. Elevated blood pressure could suggest another issue, such as pain, anxiety, or the use of medications like vasopressors. It is not directly related to the pulmonary edema seen in ARDS.
C. Tachypnea: Tachypnea, or rapid breathing, is a hallmark clinical manifestation of acute respiratory distress syndrome (ARDS). In ARDS, pulmonary edema (fluid accumulation in the lungs) occurs as a result of damage to the alveolar-capillary membrane, leading to impaired gas exchange. The body attempts to compensate for decreased oxygenation by increasing the respiratory rate, leading to tachypnea. This is an early sign of respiratory distress and often precedes hypoxemia and other more severe manifestations. The nurse should closely monitor for tachypnea, as it can indicate worsening respiratory compromise.
D. Bradycardia: Bradycardia, or a slow heart rate, is not typically associated with ARDS. In fact, tachycardia (an elevated heart rate) is more commonly seen in response to hypoxia, respiratory distress, or as a compensatory mechanism for low blood pressure in critical illness. Bradycardia could indicate other issues such as vagal stimulation, medication effects, or electrolyte imbalances but is not characteristic of ARDS itself. 4o mini
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. pH 7.33, PaCO2 35 mmHg, PaO2 78 mmHg, HCO3 20 mEq/L:
This answer choice indicates respiratory acidosis (pH < 7.35, low bicarbonate), but the goal in acute respiratory failure is not just to adjust the pH alone; the more immediate concern is correcting oxygenation. The PaO2 of 78 mmHg is below the normal range (80-100 mmHg), indicating hypoxemia that should be corrected first. The goal should be to improve PaO2 to acceptable levels (≥80 mmHg) and achieve adequate oxygen saturation. This ABG result does not fully align with the immediate goals of treatment.
B. Heart rate 80 and respiratory rate 20:
While normal vital signs like heart rate and respiratory rate are important, they are not the primary goal of treatment in acute respiratory failure. The focus during ventilator support is to improve oxygenation and ventilation rather than simply achieving normal heart and respiratory rates. In acute respiratory failure, abnormal heart and respiratory rates are often a result of hypoxia or hypercapnia (high CO2), so normalizing oxygenation and carbon dioxide levels is more critical initially.
C. O2 saturation of at least 94%:
The primary goal in acute respiratory failure is to maintain adequate oxygenation. In this context, the goal of ventilator support is to correct hypoxemia (low blood oxygen levels) and restore normal oxygen saturation. A target oxygen saturation of at least 94% is commonly considered appropriate for most patients in acute respiratory failure to ensure that tissues are receiving enough oxygen to prevent organ damage. This is a key aspect of managing respiratory failure and ensuring adequate tissue perfusion. Oxygen saturation below 90% is typically considered to indicate a severe level of hypoxemia, requiring prompt intervention.
D. Sodium 135 mg/dL and potassium 4.8 mg/dL:
While electrolyte levels are important to monitor in any critically ill patient, the main goal of treatment in acute respiratory failure is improving oxygenation and ventilation rather than focusing specifically on normalizing sodium or potassium levels. Correcting imbalances in electrolytes can be part of overall care, but it is not the primary objective in this situation. Oxygenation (as measured by PaO2 and O2 saturation) takes priority over correcting individual electrolytes.
Correct Answer is ["89.8"]
Explanation
Step-by-Step Solution:
Convert the client's weight from pounds to kilograms.
1 pound is= 0.453592 kilograms.
220 pounds = 220 x 0.453592 = 99.7664 kilograms.
Calculate the total dose of Alteplase.
The prescribed dose is 0.9 mg/kg.
The client weighs 99.7664 kg.
The total dose = 0.9 mg/kg x 99.7664 kg = 89.8 mg.
Compare the calculated dose with the maximum dose.
The calculated dose (89.8 mg) is less than the maximum dose (90 mg).
Round the answer off to the nearest tenth:
89.9 mg
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