The client being mechanically ventilated has become more restless over the course of the shift.
Which is the nurse's best action?

Darkens the room and ask visitors to leave.

Documents the observation as the only action.

Checks the client's oxygen saturation by pulse oximetry.

Administers a dose of pain medication or sedative.

Answer and Explanation

The Correct Answer is C

Choice A rationale

While reducing environmental stimuli like light and noise can help decrease agitation in some patients, it does not address the potentially life-threatening physiological causes of restlessness. Restlessness in a mechanically ventilated patient is a primary clinical indicator of hypoxemia or hypercapnia. Failing to assess the patient's oxygenation status first could lead to a delay in recognizing respiratory failure or ventilator malfunction, which could result in permanent organ damage or cardiac arrest.

Choice B rationale

Documentation is a vital part of nursing care, but it must follow a thorough assessment and appropriate intervention. Restlessness is a significant change in clinical status for a ventilated patient and should never be the only action taken. Ignoring the underlying cause of the behavior and simply recording it in the medical record is a failure of nursing judgment that puts the patient at risk for undetected respiratory distress or unplanned self-extubation.

Choice C rationale

Pulse oximetry provides a non-invasive, rapid assessment of the patient's arterial oxygen saturation, with a normal range typically being 95 to 100 percent. Restlessness is often the very first sign of hypoxia as the brain responds to decreased oxygen levels. By checking the saturation immediately, the nurse can determine if the restlessness is due to a physiological need for more oxygen, a dislodged tube, or a need for suctioning before considering psychological or environmental factors.

Choice D rationale

Administering sedation or analgesics to a restless patient without first assessing their respiratory status is dangerous. If the restlessness is caused by hypoxia, adding a sedative will further depress the respiratory drive and mask the clinical signs of distress, leading to a rapid decline in the patient's condition. While comfort is important, the nurse must prioritize the "Airway, Breathing, and Circulation" (ABC) framework and confirm adequate gas exchange before providing any pharmacological chemical restraints.

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Correct Answer is A

Explanation

Choice A rationale

Septic shock in the hyperdynamic or warm phase involves systemic inflammatory response syndrome, which often triggers the coagulation cascade. This activation can lead to disseminated intravascular coagulation where microthrombi form throughout the microcirculation. Administering heparin during this early stage aims to inhibit the conversion of fibrinogen to fibrin, thereby preventing further microvascular occlusion and preserving organ perfusion before the compensatory mechanisms fail and progress into the hypodynamic or cold stage.

Choice B rationale

These blood products are typically reserved for the hypodynamic or late phase of septic shock when disseminated intravascular coagulation has progressed to a consumptive coagulopathy. At this point, the patient is at high risk for spontaneous hemorrhage due to the depletion of clotting factors and platelets. Providing these during the hyperdynamic phase is generally premature as the primary pathological process at that moment is excessive clotting rather than a deficiency leading to bleeding.

Choice C rationale

Corticosteroids are sometimes utilized in septic shock to manage relative adrenal insufficiency or to dampen the overwhelming systemic inflammatory response. However, they are not the primary medication indicated for managing the specific microcirculatory alterations seen during the hyperdynamic phase. Their role is more focused on hemodynamic stability through the enhancement of catecholamine sensitivity and reducing the production of pro-inflammatory cytokines, rather than directly addressing the risk of microthrombi formation.

Choice D rationale

Vitamin K is essential for the hepatic synthesis of clotting factors II, VII, IX, and X. While important for general coagulation health, it acts too slowly to address the acute, rapid-fire microvascular clotting occurring during the hyperdynamic phase of sepsis. It is not an intervention designed to treat the underlying pathophysiology of septic shock but is rather a nutritional supplement or an antidote for specific anticoagulants like warfarin.

A. pH 7.46, PaO2 90 mm Hg, PaCO2 32 mm Hg, and O2 sat 98 B. pH 7.31, PaO2 91 mm Hg, PaCO2 50 mm Hg, and O2 sat 96 C. pH 7.34, PaO2 82 mm Hg, PaCO2 40 mm Hg, and O2 sat 97 D. pH 7.35, PaO2 85 mm Hg, PaCO2 4.5 mm Hg, and O2 sat 95 .

Correct Answer is D

Explanation

Choice A rationale

These results show a pH of 7.46 (normal range 7.35 to 7.45), which is slightly alkaline. The PaCO2 is 32 mm Hg (normal range 35 to 45 mm Hg), indicating mild respiratory alkalosis, likely due to hyperventilation. The PaO2 is 90 mm Hg (normal range 80 to 100 mm Hg) and O2 saturation is 98 percent (normal range 95 to 100 percent), which are both within normal limits. While the alkalosis should be monitored, it is not an acute, life-threatening emergency.

Choice B rationale

This patient has a pH of 7.31 (normal 7.35 to 7.45), indicating acidosis. The PaCO2 is elevated at 50 mm Hg (normal 35 to 45 mm Hg), which suggests respiratory acidosis. However, the PaO2 of 91 mm Hg and O2 saturation of 96 percent are within acceptable ranges. This often reflects chronic obstructive pulmonary disease or compensated respiratory failure. While significant, it is generally less urgent than a patient with extremely abnormal gas exchange or severely deranged carbon dioxide levels.

Choice C rationale

These values represent a pH of 7.34, which is just below the normal range of 7.35 to 7.45, signifying very mild acidosis. The PaCO2 of 40 mm Hg is perfectly within the normal range of 35 to 45 mm Hg. The PaO2 of 82 mm Hg and O2 saturation of 97 percent are also within normal physiological limits. This patient is relatively stable and does not exhibit any signs of severe respiratory or metabolic distress that would require rapid intervention.

Choice D rationale

Although the pH is 7.35 and PaO2 is 85 mm Hg (within normal ranges), the PaCO2 is listed as 4.5 mm Hg. Normal PaCO2 is 35 to 45 mm Hg. A PaCO2 of 4.5 mm Hg is physiologically impossible in a living patient and represents either a profound, life-threatening crisis of hypocapnia or a critical lab error. Regardless, such an extreme deviation suggests an immediate need for assessment and reporting because the patient's respiratory status or the monitoring equipment is severely compromised.

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The client being mechanically ventilated has become more restless over the course of the shift. Which is the nurse's best action?

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The client being mechanically ventilated has become more restless over the course of the shift.
Which is the nurse's best action?