An infusion at 3 mcg/kg/min. The drug is available as 600 mg in 1000 mL of fluid. The client weighs 150 pounds. Calculate. Do not round, if applicable.

Choice A Reason:
Pneumonia is an infection of the lungs, not the ear. It primarily affects the alveoli, causing symptoms like cough, fever, and difficulty breathing. While respiratory infections can sometimes lead to ear infections, pneumonia itself does not directly infect the ear.

Choice B Reason:
Endocarditis is an infection of the inner lining of the heart chambers and valves. It is typically caused by bacteria entering the bloodstream and does not affect the ear. Symptoms include fever, heart murmurs, and fatigue.

Choice C Reason:
Myocarditis is an inflammation of the heart muscle, usually caused by viral infections. It affects the heart's ability to pump blood and does not involve the ear. Symptoms can include chest pain, fatigue, and shortness of breath.

Choice A Reason:
The irreversible stage of shock, also known as the terminal stage, is characterized by severe organ damage and failure. At this point, the body's compensatory mechanisms have failed, and recovery is unlikely. Decreased blood pressure and inadequate tissue perfusion are present, but they are more pronounced in the progressive stage.

Choice B Reason:
The refractory stage is often used interchangeably with the irreversible stage. It signifies a point where shock has progressed to such an extent that treatment is no longer effective. The body's organs have sustained irreversible damage, and despite medical intervention, the patient is unlikely to survive.

Choice C Reason:
The progressive stage of shock is characterized by a significant drop in blood pressure and inadequate tissue perfusion. During this stage, the body's compensatory mechanisms begin to fail, leading to worsening hypoperfusion and cellular damage. This stage is critical as it marks the transition from reversible to potentially irreversible damage if not promptly treated.

Choice D Reason:
The compensatory stage, also known as the non-progressive stage, involves the body's initial response to shock. During this stage, mechanisms such as increased heart rate and vasoconstriction work to maintain blood pressure and perfusion to vital organs. Blood pressure may still be within normal limits, and tissue perfusion is maintained, albeit at a reduced level.