A nurse is caring for a client who has an acute respiratory failure (ARF). The nurse should monitor the client for which of the following manifestations of this condition? (Select all that apply.)

Choice A Reason: This is incorrect. Widening pulse pressure is not a sign of hypovolemic shock, but rather of increased intracranial pressure or aortic regurgitation. Hypovolemic shock causes narrowing pulse pressure due to decreased stroke volume and increased peripheral resistance.

Choice B Reason: This is correct. Increased heart rate is a sign of hypovolemic shock, as the body tries to compensate for the decreased blood volume and cardiac output by increasing the heart rate and contractility.

Choice C Reason: This is incorrect. Increased deep tendon reflexes are not a sign of hypovolemic shock, but rather of hyperreflexia or tetany. Hypovolemic shock causes decreased deep tendon reflexes due to reduced perfusion and oxygenation of the muscles and nerves.

Choice D Reason: This is incorrect. Pulse oximetry 96% is not a sign of hypovolemic shock, but rather of normal oxygen saturation. Hypovolemic shock causes decreased pulse oximetry due to hypoxia and impaired gas exchange.

Choice A Reason: This is incorrect. Pulse and blood pressure findings are not reliable indicators of pain, as they can be influenced by many other factors, such as anxiety, medication, or underlying conditions. They are also not sensitive enough to detect changes in pain intensity or relief.

Choice B Reason: This is incorrect. Scheduled treatments and client illness are not relevant parameters for assessing pain, as they do not reflect the current pain experience of the client. They may provide some clues about the possible causes or sources of pain, but they do not measure the pain itself.

Choice C Reason: This is correct. A self-report pain rating scale is the most valid and reliable parameter for assessing pain, as it reflects the subjective perception of the client. The nurse should use a simple and appropriate scale, such as a numeric or visual analog scale, and ask the client to point to the number or picture that best represents their pain level.

Choice D Reason: This is incorrect. Behavioral indicators and affect are useful parameters for assessing pain, especially when the client has difficulty communicating verbally, but they are not the first choice. They are more subjective and variable than self-report, and they may be influenced by cultural or personal factors. They should be used in conjunction with self-report, not instead of it.