Adult Health Nursing Study Guide Answers

Correct Answer: C

Rationale: Checking the humidifier's water regularly is the priority precautionary measure that should be done by the nurse during oxygen therapy. Maintaining adequate water in the humidifier ensures proper humidification of the oxygen delivered to the patient, helping prevent mucous membrane dryness and irritation. Dry mucous membranes can lead to discomfort, increased risk of infection, and potential damage to the respiratory system. Therefore, ensuring the humidifier's water level is appropriate is crucial for the safety and well-being of the patient receiving oxygen therapy. Limiting visitors, attaching "No Smoking" signage, and connecting the bait to the oxygen tank are important precautions as well, but checking the humidifier's water is the priority measure in this scenario.

Correct Answer: D

Rationale: Escherichia coli (E. coli) is the MOST common causative agent of urinary tract infection (UTI), accounting for approximately 80-85% of all cases. E. coli is a type of bacteria that naturally resides in the gastrointestinal tract and can easily migrate to the urinary tract, causing infection. Its prevalence in UTIs is due to various factors such as its ability to adhere to the uroepithelial cells and form biofilms, leading to persistent infections. Therefore, E. coli is the most common organism responsible for UTIs in both community and healthcare settings.

Correct Answer: C

Rationale: An amniotic fluid embolism is a rare and life-threatening complication during labor and delivery. It occurs when amniotic fluid or fetal cells enter the maternal circulation, triggering a rapid immune response that can lead to cardiovascular collapse and respiratory failure. The priority nursing intervention for a woman in active labor diagnosed with an amniotic fluid embolism is to initiate cardiopulmonary resuscitation (CPR) to support her vital functions and circulation. Providing immediate CPR can help sustain her until further medical interventions can be implemented. Administering oxygen and preparing for a cesarean section may be necessary but should occur after CPR is initiated to stabilize the woman's condition. Inserting an indwelling urinary catheter is not the priority in this emergency situation, as maintaining adequate cardiac and respiratory function takes precedence.

Correct Answer: B

Rationale: The research design being referred to in the question is an experimental design. An experimental study involves the manipulation of an independent variable, which is the intervention in this case, to determine its effect on a dependent variable. "Blinding" in research refers to the practice of withholding information about the intervention from certain individuals involved in the study, such as researchers, participants, or outcome assessors. Blinding is commonly used in experimental studies to reduce bias and ensure the integrity of the study results. This combination of intervention and blinding is a hallmark of experimental research designs.

Correct Answer: B

Rationale: In hypovolemic shock, isotonic electrolyte solutions are commonly used for fluid replacement to restore the circulating blood volume. The commonly used isotonic electrolyte solutions for this purpose are 0.9% sodium chloride (normal saline) and lactated Ringer's solution.