A nurse is caring for a client who has nausea and is vomiting. The nurse should identify that the client is at risk for which of the following acid-base imbalances?

Choice A reason: Reflex incontinence is not a sign of the need to catheterize the client, as it is a type of involuntary urine loss that occurs when the bladder is overfilled and the sphincter relaxes. Reflex incontinence can be managed by following a regular catheterization schedule, not by waiting for symptoms.

Choice B reason: Urge incontinence is not a sign of the need to catheterize the client, as it is a type of involuntary urine loss that occurs when the bladder contracts involuntarily and the sphincter cannot prevent leakage. Urge incontinence can be managed by using anticholinergic medications, bladder training, or pelvic floor exercises, not by catheterization.

Choice C reason: Nocturnal enuresis is not a sign of the need to catheterize the client, as it is a type of involuntary urine loss that occurs during sleep. Nocturnal enuresis can be managed by limiting fluid intake before bedtime, using an alarm device, or taking desmopressin, not by catheterization.

Choice D reason: Suprapubic discomfort is a sign of the need to catheterize the client, as it indicates bladder distension and possible urinary retention. Suprapubic discomfort can be relieved by draining the urine from the bladder using a catheter.

Choice A reason: Crackles auscultated over the client's lung fields are not a sign of pleural effusion. Crackles are abnormal breath sounds that indicate fluid or secretions in the alveoli. They can be heard in conditions such as pneumonia, heart failure, or pulmonary edema.

Choice B reason: Crepitus palpated on the client's chest is not a sign of pleural effusion. Crepitus is a crackling sensation that occurs when air leaks into the subcutaneous tissue. It can be felt in conditions such as pneumothorax, chest trauma, or chest surgery.

Choice C reason: Substernal retractions noted on the client's chest are not a sign of pleural effusion. Substernal retractions are inward movements of the chest wall below the sternum that indicate increased respiratory effort. They can be seen in conditions such as asthma, bronchiolitis, or croup.

Choice D reason: Dullness percussed over the client's lung fields is a sign of pleural effusion. Dullness is a flat sound that indicates the presence of a solid or liquid mass in the thoracic cavity. It can be detected in conditions such as pleural effusion, atelectasis, or consolidation.