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?
The mean arterial pressure (MAP) is 50 mm Hg.
Cardiac Out (CO) is 4 L/min
Stroke volume 70 ml/beat
The heart rate is 80 bpm.
The Correct Answer is A
Mean arterial pressure (MAP) is a measure of the average pressure within the arteries during one cardiac cycle. It represents the perfusion pressure that drives blood flow to organs and tissues. In the context of shock, a MAP of 50 mm Hg is considered low and indicates inadequate tissue perfusion.
To improve tissue perfusion and restore blood pressure, the nurse would anticipate administering large volumes of intravenous fluids, such as Lactated Ringers (LR). Fluid resuscitation aims to increase intravascular volume and improve cardiac output, ultimately leading to improved tissue perfusion.
B. Cardiac Output (CO) is 4 L/min in (option A) is incorrect because Cardiac output represents the volume of blood pumped by the heart per minute. While a low cardiac output may require intervention, it does not specifically indicate the need for large volumes of fluid administration.
C. Stroke volume is 70 ml/beat in (option C) is incorrect because Stroke volume refers to the volume of blood ejected by the heart with each contraction. While stroke volume can be an important determinant of cardiac output, it alone does not indicate the need for large fluid volumes.
D. The heart rate is 80 bpm in (option D) is incorrect because: Heart rate is the number of heartbeats per minute. While the heart rate can impact cardiac output, it does not provide direct information about fluid resuscitation needs.
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Related Questions
Correct Answer is B
Explanation
Central venous pressure (CVP) is a measurement of the pressure in the central veins, which reflects the blood volume and right-sided cardiac function. High CVP readings may indicate fluid overload or impaired cardiac function, and intervention is necessary to address the underlying cause.
Administering IV diuretic medications can help reduce fluid volume by increasing urine output and promoting fluid elimination. By removing excess fluid, the diuretic medications can help lower the CVP and alleviate the high pressures.
The other options mentioned are not the anticipated actions for addressing high CVP:
A. Increasing the IV fluid infusion rate in (option A) is incorrect because: If the CVP is already indicating high pressures, increasing the IV fluid infusion rate would further contribute to fluid overload and exacerbate the problem. This action would not be appropriate for high CVP readings.
C. Elevating the head of the patient's bed to 45 degrees in (option C) is incorrect because Positioning the patient with the head of the bed elevated is commonly done to prevent complications such as aspiration or improve respiratory function. While it may have other benefits, it does not directly address the high CVP.
D. Documenting the CVP and continuing to monitor in (option D) is incorrect because Documenting the CVP and continuing to monitor is important for ongoing assessment and evaluation. However, in the presence of high CVP readings, intervention is necessary to address the underlying issue rather than solely documenting and monitoring.
Therefore, when a patient's CVP monitor indicates high pressures following surgery, the nurse would anticipate administering IV diuretic medications to help reduce fluid volume and lower the CVP.
Correct Answer is B
Explanation
The patient's symptoms of fever and elevated white blood cell count suggest a potential infection and sepsis. Broad-spectrum antibiotics should be initiated promptly to cover a wide range of possible pathogens until further diagnostic tests and identification of the specific causative agent are obtained. Early administration of appropriate antibiotics is crucial in sepsis management to target the suspected infection and improve patient outcomes.
A. Cooling baths in (option A) is incorrect because: Cooling baths are typically used in the management of hyperthermia or specific conditions like heatstroke. While the patient has an elevated temperature, it is likely due to the systemic inflammatory response rather than solely hyperthermia.
C. Blood transfusion in (option C) is incorrect because Blood transfusion may be required in certain cases of sepsis if there is evidence of significant anemia or active bleeding. However, based on the information provided, there is no immediate indication of a blood transfusion.
D. NPO status in (option D) is incorrect because NPO status (nothing by mouth) is a general precautionary measure used in various situations, such as prior to surgery or to manage gastrointestinal complications. It is not a specific intervention in the sepsis resuscitation bundle.
Therefore, the nurse should initiate the intervention of administering broad-spectrum antibiotics in this scenario.
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