A nurse is caring for a client who has heart failure and respiratory arrest. What should be the nurse’s first action?

Choice A rationale:

Awaiting biopsy results can certainly cause anxiety and stress, but it doesn't directly impact the physiological mechanisms that modulate pain perception.

While a patient awaiting biopsy results may be more attentive to their bodily sensations, including pain, the anxiety itself is not the primary driver of a lowered pain threshold.

It's important to address the patient's concerns and provide emotional support, but this alone may not be sufficient to manage pain effectively if anxiety is not the primary factor.

Choice B rationale:

Anxiety activates the sympathetic nervous system, which triggers the "fight-or-flight" response. This cascade of physiological changes includes:

Increased heart rate and blood pressure Muscle tension

Dilated pupils

Heightened awareness of bodily sensations

These physiological changes can amplify pain signals and lower the pain threshold, meaning that a person who is anxious may perceive pain more intensely than someone who is calm and relaxed.

This is because anxiety can reduce the effectiveness of the body's natural pain-inhibiting mechanisms, such as the release of endorphins and serotonin.

Choice C rationale:

Difficulty sleeping can also contribute to pain, but its effect on pain threshold is less direct than that of anxiety. Sleep deprivation can lead to:

Increased irritability Decreased pain tolerance Impaired cognitive function

These factors can make it more difficult to cope with pain, but they don't directly lower the threshold at which pain signals are perceived.

Choice D rationale:

Pain threshold varies among individuals due to a variety of factors, including: Genetics

Past experiences with pain Psychological factors Cultural beliefs

Coping mechanisms

It is incorrect to assume that all patients who have had surgery will have the same pain threshold.

Choice A rationale:

Malnutrition is a risk factor for HAIs, but it is not a common cause. Malnutrition weakens the immune system, making it less able to fight off infection. However, malnutrition is not directly responsible for the introduction of pathogens into the body, which is a necessary step for the development of an HAI.

Choice C rationale:

Multiple caregivers can contribute to the spread of pathogens, but it is not a common cause of HAIs. When multiple caregivers are involved in a patient's care, there is a greater chance that one of them may be carrying a pathogen and transmit it to the patient. However, this is not the most common way that HAIs are spread.

Choice D rationale:

Chlorhexidine washes are actually used to prevent HAIs, not cause them. Chlorhexidine is an antiseptic that kills bacteria and other pathogens. It is often used to clean the skin before surgery or other invasive procedures.

Choice B rationale:

Urinary catheterization is a common cause of HAIs. A urinary catheter is a tube that is inserted into the bladder to drain urine. Catheters can introduce bacteria into the bladder, which can lead to urinary tract infections (UTIs). UTIs are the most common type of HAI.

Here are some of the reasons why urinary catheterization is a common cause of HAIs:

Catheters can introduce bacteria into the bladder. The catheter itself can act as a conduit for bacteria to enter the bladder. Bacteria can also enter the bladder around the catheter, where the catheter enters the urethra.

Catheters can irritate the bladder. This can make the bladder more susceptible to infection. Catheters can obstruct the flow of urine. This can allow bacteria to grow in the bladder.

Catheters can be difficult to keep clean. This can increase the risk of bacteria growing on the catheter and being introduced into the bladder.