The emergency department nurse provides care for a 50-year-old male patient with septic shock. The nurse recalls that the renin- angiotensin system is activated during which stage of shock?

Initial stage

Progressive stage

Refractory stage

Compensatory stage

Answer and Explanation

The Correct Answer is D

In the compensatory stage of shock, the body initiates various mechanisms to maintain perfusion to vital organs and restore homeostasis. Activation of the renin-angiotensin system is one of the compensatory responses. The decreased blood flow and oxygen delivery to the kidneys stimulate the release of renin from the kidneys. Renin acts on angiotensinogen, converting it into angiotensin I, which is further converted to angiotensin II by the action of angiotensin-converting enzyme (ACE). Angiotensin II is a potent vasoconstrictor and also stimulates the release of aldosterone, leading to sodium and water retention. These mechanisms aim to increase blood pressure and cardiac output and restore fluid balance.
A. The initial stage of shock in (option A) is incorrect because it is characterized by inadequate tissue perfusion and the activation of various compensatory mechanisms, including the release of stress hormones. However, the renin-angiotensin system is not specifically mentioned as activated in this stage.
B. The progressive stage of shock in (option B) is incorrect because it occurs when compensatory mechanisms fail to maintain adequate perfusion, leading to worsening hypoperfusion and organ dysfunction. The renin-angiotensin system continues to be activated during this stage, but it is primarily associated with the compensatory stage.
C. The refractory stage of shock in (option C) is incorrect because it is the stage of severe and prolonged hypoperfusion, where organ failure becomes irreversible. The renin-angiotensin system may still be activated, but it is not the primary focus of this stage.
Therefore, the activation of the renin-angiotensin system occurs during the compensatory stage of shock.

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Correct Answer is ["A","B","C","D"]

Explanation

These conditions can lead to fluid loss, either through increased gastrointestinal output (diarrhea, vomiting, lower GI bleeding) or accumulation of air in the pleural space (tension pneumothorax), resulting in a decrease in blood volume and subsequent hypovolemic shock.
E. Diabetes insipidus in (option E) is incorrect because it is not directly associated with hypovolemic shock. Diabetes insipidus is a condition characterized by excessive thirst and the production of large volumes of dilute urine due to insufficient production or response to antidiuretic hormone (ADH). While diabetes insipidus can lead to dehydration and potential hypovolemia, it is not a direct cause of hypovolemic shock.
F. Valvular stenosis in (option F) is incorrect because it is a condition characterized by the narrowing or obstruction of one or more heart valves. While it can cause problems with cardiac output and circulation, it is not specifically related to hypovolemic shock, which is caused by a decrease in blood volume.
Therefore, the conditions that can cause hypovolemic shock include diarrhea, vomiting, lower GI bleeding, and tension pneumothorax.

A. decrease the respiratory rate. B. Leave the ventilator at the current settings. C. increase the tidal volume (VT). D. Increase the F102

Correct Answer is A

Explanation

The ABG results show a pH of 7.50, PaCO2 of 29 mmHg, and HCO3 of 23 mEq/L, indicating respiratory alkalosis. In respiratory alkalosis, there is a decrease in PaCO2 (hypocapnia), which can be caused by excessive ventilation.
To address the respiratory alkalosis, the nurse should decrease the respiratory rate. This would help reduce the amount of ventilation provided and allow the patient to retain more carbon dioxide (CO2), thereby increasing the PaCO2 levels and restoring acid-base balance.
B. Leaving the ventilator at the current settings in (option B) is incorrect because it may exacerbate respiratory alkalosis as it would maintain the same level of ventilation.
C. Increasing the tidal volume (VT) in (option C) is incorrect because it would not address the respiratory alkalosis. Tidal volume refers to the volume of air delivered with each breath, while the issue in this case is excessive ventilation leading to hypocapnia.
D. Increasing the FiO2 (fraction of inspired oxygen) in (option D) is incorrect because it is not indicated based on the given ABG results. The oxygenation (PaO2) level is within normal limits (80 mmHg), suggesting adequate oxygenation.
It is important to consult with the healthcare provider or respiratory therapist for further guidance on adjusting the ventilator settings based on the patient's condition and response to therapy.

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The emergency department nurse provides care for a 50-year-old male patient with septic shock. The nurse recalls that the renin- angiotensin system is activated during which stage of shock?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

Which conditions can cause hypovolemic shock? Select all that apply.

Correct Answer is ["A","B","C","D"]

Explanation

Four hours after mechanical ventilation is initiated for a patient with a suspected drug overdose, the patient's arterial blood gas (ABG) results include a pH of 7.50, Pa0 2 of 80 mm Hg. PaCO2 of 29 mmHg, and HCO3 of 23 mEq/L (23 mmo/L). The nurse will anticipate the need to:

Correct Answer is A

Explanation

When assessing the hemodynamic information for a newly admitted patient in shock of unknown etiology, the emergency department nurse will anticipate the administration of large volumes of Lactated Ringers (LR) when which one of the following occurs?

A 29-year-old female patient is admitted to the emergency department with two of the systemic inflammatory response syndrome variables: temperature of 101.2 °F and 14,000 per μL white blood cell count. Which intervention from the sepsis resuscitation bundle does the nurse initiate?

Which of the following interventions is considered a priority when treating a patient who presents with septic shock?

A 40-year-old female patient with massive trauma and possible spinal cord injury is admitted to the emergency department (ED). The nurse suspects that the patient may be experiencing neurogenic shock in addition to hypovolemic shock, based on which one of the following?

Which action should the nurse take when the low-pressure alarm sounds for a patient who has an arterial line in the right radial artery?

The nurse is caring for a patient who has septic shock. Which assessment finding is most important for the nurse to report to the health care provider?