The nurse is providing education on epidemiology to a nursing student. Which of the following statements indicates the importance of epidemiology to the community health nurse? SELECT ALL THAT APPLY

Choice A reason: Gradual onset of several hours is not a manifestation of a hemorrhagic stroke. A hemorrhagic stroke occurs when a blood vessel in the brain bursts, causing bleeding into the surrounding tissue. This usually happens suddenly and without warning, and can cause rapid deterioration of the client's condition.

Choice B reason: Maintains consciousness is not a manifestation of a hemorrhagic stroke. A hemorrhagic stroke can cause increased intracranial pressure, which can compress the brain and impair its function. This can lead to loss of consciousness, coma, or death.

Choice C reason: Sudden severe headache is a manifestation of a hemorrhagic stroke. A hemorrhagic stroke can cause intense pain in the head, neck, or face, due to the pressure and irritation of the bleeding. The headache may be described as "the worst headache of my life" or "thunderclap headache".

Choice D reason: History of neurologic deficits lasting less than 1 hr. is not a manifestation of a hemorrhagic stroke. This is a characteristic of a transient ischemic attack (TIA), which is also known as a mini-stroke. A TIA occurs when a blood clot temporarily blocks an artery in the brain, causing temporary symptoms such as weakness, numbness, vision loss, or speech difficulty. A TIA does not cause permanent damage to the brain, but it is a warning sign of a possible future stroke.

Choice A reason: Performing carotid massage is not an appropriate action for a nurse to take when a client has signs of a stroke, as it may worsen the condition or cause complications. Carotid massage is a technique that involves applying pressure to the carotid artery in the neck to stimulate the vagus nerve and slow down the heart rate. It is used to treat some types of arrhythmias, such as supraventricular tachycardia. However, carotid massage may dislodge a blood clot or plaque from the carotid artery and cause an embolic stroke, which is a type of ischemic stroke that occurs when a blood clot travels to the brain and blocks a blood vessel. Carotid massage may also cause bradycardia, hypotension, or syncope, which can reduce the blood flow to the brain and worsen the ischemic damage.

Choice B reason: Calling for help is an appropriate action for a nurse to take when a client has signs of a stroke, as it initiates the emergency response and allows for prompt evaluation and treatment. Stroke is a medical emergency that occurs when the blood supply to a part of the brain is interrupted, causing brain cells to die. The sooner the stroke is recognized and treated, the better the chances of survival and recovery. Therefore, the nurse should call for help as soon as possible and activate the stroke protocol in the facility.

Choice C reason: Providing the client with water to test the gag reflex is not an appropriate action for a nurse to take when a client has signs of a stroke, as it may cause aspiration or choking. A gag reflex is an involuntary contraction of the throat muscles that prevents foreign objects from entering the airway. It is tested by touching the back of the throat with a tongue depressor or a cotton swab. However, this test is not indicated in a client who has signs of a stroke, as it may trigger vomiting or coughing, which can increase intracranial pressure or cause bleeding. Moreover, giving water to a client who has signs of a stroke may be dangerous, as they may have dysphagia (difficulty swallowing) or facial weakness, which can impair their ability to swallow safely and increase the risk of aspiration pneumonia.

Choice D reason: Administering thrombolytics is not an appropriate action for a nurse to take when a client has signs of a stroke, as it may be contraindicated or harmful depending on the type and timing of the stroke. Thrombolytics are medications that dissolve blood clots and restore blood flow. They are used to treat ischemic stroke, which is caused by a blood clot that blocks a blood vessel in the brain. However, thrombolytics are not effective for hemorrhagic stroke, which is caused by bleeding into or around the brain. In fact, thrombolytics may worsen hemorrhagic stroke by increasing bleeding and intracranial pressure. Therefore, thrombolytics should only be given after confirming the type of stroke by imaging tests such as computed tomography (CT) scan or magnetic resonance imaging (MRI). Thrombolytics should also be given within a specific time window after the onset of symptoms, usually within 3 to 4.5 hours, as they may lose their effectiveness or cause complications if given too late. Therefore, administering thrombolytics is not an action that a nurse can take without proper assessment and orders from the health care provider.