The nurse is caring for a 4-month-old infant in the emergency department. The nurse reviews the infant's medical record and assessment findings. Which of the following conditions should the nurse suspect, and what actions should the nurse take to address that condition, and what parameters should the nurse monitor to assess the infant's progress?

The nurse should suspect that the infant has

Choice A reason: Continuing to monitor the client is not the best action, as it does not address the low urine output of the child. The child has a urine output of 20 mL/hr, which is below the expected range of 30 to 40 mL/hr for a 3-year-old child. Low urine output can indicate dehydration, kidney injury, or urinary tract obstruction, which require prompt intervention.

Choice B reason: Performing a bladder scan at the bedside is not the most appropriate action, as it is not the first-line diagnostic tool for low urine output. A bladder scan is a noninvasive ultrasound device that measures the amount of urine in the bladder. It can help detect urinary retention, which is the inability to empty the bladder completely. However, urinary retention is unlikely in a 3-year-old child, and a bladder scan may not be accurate or reliable in children.

Choice C reason: Providing oral rehydration fluids is the best action, as it can help restore the fluid and electrolyte balance of the child. Oral rehydration fluids are solutions that contain water, sugar, and salt in specific proportions that match the body's needs. They can prevent or treat dehydration, which is a common cause of low urine output in children. The nurse should offer the child oral rehydration fluids every 15 to 20 minutes, and monitor the urine output, vital signs, and hydration status.

Choice D reason: Notifying the provider is not the first action, as it is not the most urgent or effective intervention for low urine output. The nurse should notify the provider after providing oral rehydration fluids and assessing the child's response. The nurse should also report any signs or symptoms of dehydration, such as dry mucous membranes, sunken eyes, poor skin turgor, or lethargy. The provider may order further tests or treatments, such as blood tests, urine tests, or intravenous fluids.

Choice A reason: This is the most likely source of the child's infection. Rheumatic fever is a complication of an untreated or poorly treated streptococcal infection, such as strep throat or scarlet fever. It usually occurs 2 to 4 weeks after the initial infection and causes inflammation of the heart, joints, skin, and nervous system. The nurse should ask the parent if the sibling was tested and treated for strep throat, and if the child was exposed to the sibling.

Choice B reason: This is not a likely source of the child's infection. Chickenpox is caused by the varicella-zoster virus, not by streptococci. It is a highly contagious disease that causes a blister-like rash, itching, fever, and fatigue. It does not cause rheumatic fever, but it can lead to other complications, such as bacterial skin infections, pneumonia, or encephalitis.

Choice C reason: This is not a likely source of the child's infection. Fifth disease is caused by the parvovirus B19, not by streptococci. It is a mild illness that causes a distinctive red rash on the face, body, and limbs, as well as fever, headache, and sore throat. It does not cause rheumatic fever, but it can affect the production of red blood cells and cause anemia in some people.

Choice D reason: This is not a likely source of the child's infection. Gastritis is the inflammation of the stomach lining, which can be caused by various factors, such as bacteria, viruses, medications, alcohol, or stress. It is not caused by streptococci, nor does it cause rheumatic fever. It can cause symptoms such as abdominal pain, nausea, vomiting, and loss of appetite.