A nurse collects the health history of a 65-year-old client. Which of the following risk factors in the client's history puts the client at the highest risk for embolic stroke?

Choice A Reason: Decreased thickness of tympanic membranes is not a physiological change to hearing in older adult clients. The tympanic membranes are thin and flexible structures that vibrate in response to sound waves. The thickness of the tympanic membranes does not change significantly with age.

Choice B Reason: Decreased tinnitus is not a physiological change to hearing in older adult clients. Tinnitus is a ringing or buzzing sound in the ears that may be caused by various factors, such as noise exposure, ear infections, medications, or aging. Tinnitus may increase or decrease with age, depending on the underlying cause.

Choice C Reason: Decreased ear wax is not a physiological change to hearing in older adult clients. Ear wax is a natural substance that lubricates and protects the ear canal from dust, bacteria, and insects. Ear wax production may vary with age, but it does not affect hearing unless it accumulates and blocks the ear canal.

Choice D Reason: Decreased ability to hear high-frequency sounds is a physiological change to hearing in older adult clients. This is also known as presbycusis, which is a gradual loss of hearing that occurs as part of aging. Presbycusis affects the ability to hear high-pitched sounds, such as consonants, birdsong, or alarms.

Choice A reason: This is the correct answer because airway obstruction is the risk that is the priority for assessment and intervention for a client who has extensive partial and full-thickness burns of
the head, neck, and chest. Airway obstruction can occur due to edema, inflammation, or inhalation injury of
the upper airway structures. It can compromise oxygenation and ventilation, and lead to respiratory failure or cardiac arrest. The nurse should assess for signs of airway obstruction, such as stridor, hoarseness, dyspnea, or cyanosis, and provide oxygen therapy, humidification, or intubation as needed.

Choice B reason: This is incorrect because fluid imbalance is not the risk that is the priority for assessment and intervention for a client who has extensive partial and full-thickness burns of
the head, neck, and chest. Fluid imbalance can occur due to fluid loss from damaged skin and capillaries, as well as increased capillary permeability and fluid shifts. It can cause dehydration, hypovolemia, shock, or electrolyte imbalances. The nurse should monitor fluid status, vital signs, urine output, and laboratory values, and provide fluid resuscitation as prescribed, but only after ensuring airway patency.

Choice C reason: This is incorrect because paralytic ileus is not the risk that is the priority for assessment and intervention for a client who has extensive partial and full-thickness burns of
the head, neck, and chest. Paralytic ileus is a condition where there is decreased or absent bowel motility due to nerve damage or decreased blood flow to
the gastrointestinal tract. It can cause abdominal distension, nausea, vomiting, or constipation. The nurse should assess bowel sounds, abdominal girth, and stool characteristics, and provide nasogastric suction or laxatives as prescribed, but only after ensuring airway patency and fluid balance.

Choice D reason: This is incorrect because infection is not the risk that is the priority for assessment and intervention for a client who has extensive partial and full-thickness burns of
the head, neck, and chest. Infection can occur due to loss of skin barrier, exposure to microorganisms, or impaired immune system. It can cause fever, increased pain, purulent drainage, or sepsis. The nurse should assess for signs of infection, obtain wound cultures, and administer antibiotics as prescribed, but only after ensuring airway patency, fluid balance, and pain control.