A client is receiving an intravenous (IV) solution over a short amount of time to replace volume losses. The nurse understands that this IV solution is most likely to be:
isotonic.
hypotonic.
hypertonic.
Hyperosmotic
The Correct Answer is A
A. Isotonic solutions have a similar osmolarity to that of blood plasma, meaning they exert the same osmotic pressure as blood. This equilibrium prevents the movement of water across cell membranes, thereby maintaining cell volume and preventing cellular dehydration or swelling. Examples of isotonic solutions commonly used for intravenous fluid replacement include 0.9% saline (normal saline) and lactated Ringer's solution.
B. Hypotonic solutions have a lower osmolarity than blood plasma, meaning they exert less osmotic pressure than blood. When administered, hypotonic solutions cause water to move into cells, leading to cellular swelling. While hypotonic solutions can help hydrate cells and replenish intracellular fluid, they are not typically used for rapid volume replacement because they can exacerbate extracellular fluid deficits and cause complications such as cerebral edema or cardiovascular collapse.
C. Hypertonic solutions have a higher osmolarity than blood plasma, meaning they exert greater osmotic pressure than blood. When administered, hypertonic solutions cause water to move out of cells, leading to cellular shrinkage. Hypertonic solutions are often used to expand intravascular volume in cases of severe hypovolemia or shock, as they rapidly increase blood osmolarity and draw fluid from the interstitial space into the bloodstream. Examples of hypertonic solutions include 3% saline and 5% dextrose in 0.9% saline.
D. Hyperosmotic solutions have an elevated osmolarity compared to blood plasma, indicating a higher concentration of solutes. These solutions exert osmotic pressure that draws water out of cells, leading to cellular dehydration. While hyperosmotic solutions are not commonly used for rapid volume replacement due to their pot
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","B"]
Explanation
A. pH 7.29: A respiratory rate of 6 breaths per minute suggests hypoventilation, which can lead to respiratory acidosis due to retention of carbon dioxide (CO2). A decrease in pH (acidosis) is expected in this scenario.
B. PaCO2 54: In respiratory acidosis, PaCO2 levels are elevated due to inadequate ventilation, leading to CO2 retention. Therefore, an elevated PaCO2 level would be anticipated in this situation.
C. pH 7.51: A pH of 7.51 indicates alkalosis, which is not consistent with the expected respiratory acidosis in the context of opioid overdose and hypoventilation. Therefore, this choice is not anticipated.
D. PaO2 72: Oxygenation may be impaired in opioid overdose due to respiratory depression, but this PaO2 level is within the normal range. Hypoxemia is not typically a prominent feature of respiratory acidosis unless there are concurrent respiratory conditions or complications. Therefore, this choice is not anticipated.
E. PaCO2 31: A PaCO2 level of 31 indicates hypocapnia, which is not consistent with the expected respiratory acidosis in the context of opioid overdose and hypoventilation. Therefore, this choice is not anticipated.
Correct Answer is A
Explanation
A. It's essential for nurses caring for dying patients to be comfortable with their own feelings about death and dying. Being comfortable with mortality allows nurses to provide compassionate care, support families, and engage in end-of-life discussions with patients. Nurses who are comfortable with their own feelings about death are better equipped to provide holistic care and support to dying patients and their families.
B. Hospice services focus on providing comfort and support to terminally ill patients and their families during the end-of-life journey. While hospice services are often beneficial and recommended for patients approaching the end of life, preferences vary among individuals and families. Some patients may choose to receive hospice care, while others may prefer to remain at home with palliative care support or receive care in a hospital or long-term care facility.
C. While some patients may experience pain as death nears, it is not necessarily true that "most" deaths are accompanied by significant pain. With advances in palliative care and pain management, many patients can experience a comfortable and peaceful death with effective symptom management.
D. Most people are not frightened to die if they have adequate information about what is happening: While adequate information and preparation can alleviate some fears about death, attitudes and responses to death vary widely among individuals. Some people may find comfort and acceptance in understanding the dying process and what to expect, while others may still experience fear, anxiety, or uncertainty regardless of the information provided.
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