Use the concentration of the available medication to find the answer. The ordered dose is  and the concentration proportion is .

The correct answer is "alpha-1 adrenergic agonist." 

Phenylephrine is frequently administered in the intensive care unit setting for patients with hypotension that is refractory to simple fluid resuscitation. It is a vasopressor, as its mechanism of action is to serve as an alpha-1 adrenergic agonist. 

The other choices are incorrect, as they represent the primary mechanisms of action of a handful of medications other than phenylephrine. 

An example of an alpha-2 adrenergic agonist would be methyldopa.

An example of a beta-1 adrenergic agonist would be dobutamine.

An example of a beta-2 adrenergic agonist would be albuterol.

An example of a beta-1 adrenergic antagonist would be atenolol.

The correct answer is "Beta-2 adrenergic receptor agonist."

This question tests your knowledge of the mechanism of action of albuterol, a short-acting medication, frequently used in the treatment of acute asthma flares. Albuterol is an agonist of the Beta-2 adrenergic receptor in the bronchial smooth muscle, which helps to dilate the bronchioles, often providing relief to patients who are suffering from asthma flares, as bronchospasm plays a large role in causing their symptoms. Additional effects of albuterol include increased heart rate, increased insulin release, and vasodilation among others.

An example of a beta-1 adrenergic agonist would be dobutamine.

An example of a beta-1 adrenergic antagonist would be atenolol.

An example of a beta-2 adrenergic antagonist would be butoxamine.

An example of an alpha-1 adrenergic agonist would be phenylephrine.

The correct answer is "Serotonin 5HT-3 receptor antagonist." 

Ondansetron functions by antagonizing the serotonergic 5HT-3 receptors both centrally in the brain and peripherally at vagal nerve endings. It is frequently given as an anti-nausea and anti-emetic agent for patients with cancer undergoing chemotherapy and/or radiation therapy, as well as in post-operative patients, and for patients with gastroenteritis, among other uses. 

Ondansetron is neither a full nor a partial agonist of the 5HT-3 receptors, making those answer choices incorrect.

Metaclopramide, which is another anti-nausea agent, is an anatagonist of the dopamine D2 receptor, but ondansetron is not, so this choice is incorrect. Neither metaclopramide nor ondansetron is an agonist of the dopamine D2 receptor. 

The correct answer is "Histamine-2 receptor antagonist."

This question tests your knowledge of the mechanism of action of the commonly prescribed antacid medication, ranitidine. Ranitidine functions by antagonizing the histamine-2 receptors within the parietal cells (acid-producing cells) of the stomach. This helps to reduce acid production, which can provide symptomatic relief to patients who suffer from epigastric burning, discomfort, and pain due to gastroesophageal reflux disease and peptic ulcer disease, among other conditions.

An example of a histamine-1 receptor antagonist would be diphenhydramine.

An example of a beta-2 adrenergic receptor agonist would be albuterol.

An example of a proton pump inhibitor would be omeprazole.

An example of a direct acid neutralizer would be calcium carbonate.

The minimum urine requirement per hour for most adults is . Based on a low finding, the physician may decide Ethel needs fluid replacement. 

Calculate drip rate in minutes using the following formula: 

Ethel's equation looks as follows:

The vastus lateralis is the preferred site of injection in infants. Rectus femoris injections may be preformed as a second choice. The dorsogluteal site should not be used in infants as the muscle is not developed and there is risk associated with the location of the sciatic nerve. Deltoid injections may be given to older children when the muscle becomes larger. 

The preferred angle for intramuscular (IM) injections is 90 degrees. However, very small infants may require that the injection be given at a 45 degree angle. Based on patient condition, it is the nurse's responsibility to assess the needs of the patient and adjust care as appropriate.

First, examine the stool for the suppository. Based on the findings, inform the physician. If the suppository was fully present in the stool, the physician may want to prescribe another dose. If not, he may choose to re-order half of the prescribed dose or none at all.  

Pantoprazole ER should not be crushed. "ER" is an abbreviation for extended release. Extended release medications dissolve over a delayed period of time. Crushing the medication results in a faster rate of absorption by body tissues due to disruption of the coating that allows it's extended release.