The number of people with hypertension in the United States is estimated to be

Correct Answer: B

Rationale: The estimated number of people with hypertension in the United States is around 25 million. Hypertension, commonly known as high blood pressure, is a prevalent health condition affecting a significant portion of the population. This estimate is based on data collected from various healthcare sources and studies on the prevalence of hypertension in the country. It is important to monitor and manage hypertension effectively to prevent the associated health risks, such as heart disease and stroke.

Correct Answer: D

Rationale: Packed red blood cells contain primarily red blood cells and are used to increase the patient's oxygen-carrying capacity. After a severe auto accident, the patient may experience blood loss and require a transfusion of packed red blood cells to improve oxygen delivery to tissues and organs. While other blood products like whole blood or fresh frozen plasma contain additional components (such as plasma proteins or clotting factors), packed red blood cells are specifically indicated to address oxygen-carrying needs in cases of significant blood loss or anemia. Therefore, in the trauma unit for a patient following a severe auto accident, the nurse should prepare to administer packed red blood cells.

Correct Answer: A

Rationale: Albuterol is typically administered through inhalation as an aerosol or nebulized solution to provide quick relief of bronchospasm in conditions such as asthma or chronic obstructive pulmonary disease. It can also be administered intravenously in emergency situations for severe bronchospasm or anaphylaxis. Albuterol is not formulated as an extended-release oral medication due to the need for rapid onset of action in managing acute bronchospasm.

Correct Answer: B

Rationale: Beta blockers are commonly used in the treatment of migraine headaches. These medications work by blocking the action of certain chemicals that cause blood vessels to dilate. By helping to prevent blood vessel dilation and constriction, beta blockers can help reduce the frequency and severity of migraine attacks. Additionally, beta blockers are thought to interfere with the transmission of pain signals in the brain.

Correct Answer: B

Rationale: The therapeutic levels for digoxin are typically considered to be between 0.5 % 2 ng/mL. This range is associated with optimal therapeutic effects of digoxin in managing heart conditions such as heart failure and atrial fibrillation. Levels below 0.5 ng/mL may be subtherapeutic while levels above 2 ng/mL can lead to toxicity symptoms like nausea, vomiting, visual disturbances, and cardiac arrhythmias. Monitoring digoxin levels within the therapeutic range ensures the medication is effective and safe for the patient.