Choice A reason: Metabolic alkalosis is a condition in which the blood pH is elevated due to an excess of bicarbonate or a loss of acid. It can be caused by vomiting, diuretics, or excessive antacid intake. It is not associated with COPD.

Choice B reason: Respiratory acidosis is a condition in which the blood pH is lowered due to an accumulation of carbon dioxide. It can be caused by hypoventilation, airway obstruction, or lung diseases such as COPD. It is the most common acid-base imbalance in COPD patients.

Choice C reason: Respiratory alkalosis is a condition in which the blood pH is elevated due to a loss of carbon dioxide. It can be caused by hyperventilation, anxiety, fever, or aspirin overdose. It is not common in COPD patients.

Choice D reason: Metabolic acidosis is a condition in which the blood pH is lowered due to an excess of acid or a loss of bicarbonate. It can be caused by diabetic ketoacidosis, renal failure, or lactic acidosis. It is not directly related to COPD.

Choice A reason: Donning sterile gloves is an essential step to prevent contamination and infection during the insertion of an indwelling urinary catheter. The nurse should also use aseptic technique and a sterile catheter kit.

Choice B reason: Applying an oil-based lubricant to the indwelling urinary catheter is not recommended, as it can damage the latex material and increase the risk of catheter-associated urinary tract infection (CAUTI). The nurse should use a water-soluble lubricant instead.

Choice C reason: Testing the balloon on the indwelling urinary catheter before insertion is a good practice, as it ensures that the balloon is functioning properly and does not leak or burst. The nurse should inflate and deflate the balloon with sterile water or saline using a syringe.

Choice D reason: Using one cotton swab to clean the client's urinary meatus is not sufficient, as it may not remove all the bacteria and debris. The nurse should use at least three cotton swabs and clean the meatus from front to back in a circular motion. The nurse should also use an antiseptic solution such as chlorhexidine or povidone-iodine.

Choice A reason: Storing oxygen tanks upright is not a necessary instruction for home oxygen therapy. Oxygen tanks can be stored horizontally or vertically, as long as they are secured and away from heat sources.

Choice B reason: Using petroleum-based ointments to moisturize lips is not advisable for clients who use home oxygen therapy. Petroleum-based products can ignite in the presence of oxygen and cause burns. The nurse should recommend water-based products instead.

Choice C reason: Keeping oxygen tanks 4 feet away from an electric stove is a safety measure for home oxygen therapy. Oxygen is a flammable gas and can cause a fire or explosion if exposed to heat or sparks. The nurse should also instruct the client to avoid smoking, candles, and other open flames.

Choice D reason: Choosing a wool blanket when using oxygen is not a good idea for home oxygen therapy. Wool is a synthetic material that can generate static electricity and ignite oxygen. The nurse should suggest cotton or other natural fabrics instead.

Choice A reason: Metabolic alkalosis is a condition in which the blood pH is elevated due to an excess of bicarbonate or a loss of acid. It can be caused by nausea and vomiting, as they result in the loss of gastric acid and the retention of bicarbonate.

Choice B reason: Respiratory acidosis is a condition in which the blood pH is lowered due to an accumulation of carbon dioxide. It can be caused by hypoventilation, airway obstruction, or lung diseases. It is not related to nausea and vomiting.

Choice C reason: Metabolic acidosis is a condition in which the blood pH is lowered due to an excess of acid or a loss of bicarbonate. It can be caused by diabetic ketoacidosis, renal failure, or lactic acidosis. It is not caused by nausea and vomiting.

Choice D reason: Respiratory alkalosis is a condition in which the blood pH is elevated due to a loss
carbon dioxide. It can be caused by hyperventilation, anxiety, fever, or aspirin overdose. It is not common in clients who have nausea and vomiting.

Choice A reason: The pulmonary artery is the large blood vessel that carries deoxygenated blood from the right ventricle to the lungs for gas exchange. It is the only artery that carries deoxygenated blood in the body.

Choice B reason: The pulmonary veins are the blood vessels that carry oxygenated blood from the lungs to the left atrium. They are the only veins that carry oxygenated blood in the body.

Choice C reason: The left ventricle is the chamber of the heart that pumps oxygenated blood to the rest of the body through the aorta. It does not directly connect to the lungs.

Choice D reason: The left atrium is the chamber of the heart that receives oxygenated blood from the pulmonary veins. It does not directly connect to the right ventricle.

Choice A reason: Muscle twitching is a sign of central nervous system oxygen toxicity, which can occur when breathing high concentrations of oxygen under pressure. It can also cause seizures, confusion, and loss of consciousness.

Choice B reason: Facial flushing is not a symptom of oxygen toxicity. It can be caused by other conditions such as fever, allergic reactions, or alcohol consumption.

Choice C reason: Periorbital edema is not a symptom of oxygen toxicity. It can be caused by other conditions such as kidney disease, heart failure, or allergies.

Choice D reason: Metallic taste in mouth is not a symptom of oxygen toxicity. It can be caused by other conditions such as medication side effects, dental problems, or infections.

Choice A reason: Confirming the client's identity by checking their wristband is the first step to ensure that the right client receives the right treatment.

Choice B reason: Providing for the client's privacy by closing the curtains is the second step to respect the client's dignity and comfort.

Choice C reason: Assisting the client into the Sims' position is the third step to facilitate the insertion of the enema tubing and the flow of the solution. The Sims' position is a side-lying position with the upper leg flexed and the lower leg straight.

Choice D reason: Inserting the tip of the enema tubing into the client's rectum is the fourth and final step to administer the enema. The nurse should lubricate the tip of the tubing, gently insert it about 3 to 4 inches into the rectum, and release the clamp to allow the solution to flow. The nurse should monitor the client for any signs of discomfort or cramping and adjust the flow rate accordingly.

Choice A reason: Doing wheelchair exercises sitting in the chair is a correct statement, as it helps to prevent pressure ulcers, improve circulation, and maintain muscle tone.

Choice B reason: Using a suppository every night to have a bowel movement is an incorrect statement, as it indicates a dependence on laxatives and a lack of bowel training. The adolescent should be taught to establish a regular bowel routine, use natural methods such as abdominal massage and digital stimulation, and avoid overuse of laxatives.

Choice C reason: Needing to catheterize oneself twice a day is a correct statement, as it helps to prevent urinary tract infections, bladder distension, and kidney damage.

Choice D reason: Carrying a water bottle with me because I drink a lot of water is a correct statement, as it helps to prevent dehydration, constipation, and urinary tract infections.

Choice A reason: Requesting that the provider prescribe a stool softener is not the best action for the nurse to take, as it may cause dependency, dehydration, or electrolyte imbalance. The nurse should try non-pharmacological interventions first, such as increasing fluid and fiber intake, promoting physical activity, and establishing a regular bowel routine.

Choice B reason: Adding fluid and fiber to the diet is the best action for the nurse to take, as it helps to soften the stool, increase the bulk, and stimulate peristalsis. The nurse should encourage the client to drink at least 2 liters of water per day and eat foods rich in fiber, such as fruits, vegetables, and whole grains.

Choice C reason: Promoting active range-of-motion activities is a good action for the nurse to take, as it helps to improve circulation, muscle tone, and bowel motility. The nurse should assist the client to perform exercises that are appropriate for their level of mobility and endurance.

Choice D reason: Avoiding gas-producing foods is not a necessary action for the nurse to take, as it does not directly affect constipation. Gas-producing foods, such as beans, cabbage, and broccoli, may cause bloating and discomfort, but they do not cause or worsen constipation.

Choice A reason: Crackles auscultated over the client's lung fields are not a sign of pleural effusion. Crackles are abnormal breath sounds that indicate fluid or secretions in the alveoli. They can be heard in conditions such as pneumonia, heart failure, or pulmonary edema.

Choice B reason: Crepitus palpated on the client's chest is not a sign of pleural effusion. Crepitus is a crackling sensation that occurs when air leaks into the subcutaneous tissue. It can be felt in conditions such as pneumothorax, chest trauma, or chest surgery.

Choice C reason: Substernal retractions noted on the client's chest are not a sign of pleural effusion. Substernal retractions are inward movements of the chest wall below the sternum that indicate increased respiratory effort. They can be seen in conditions such as asthma, bronchiolitis, or croup.

Choice D reason: Dullness percussed over the client's lung fields is a sign of pleural effusion. Dullness is a flat sound that indicates the presence of a solid or liquid mass in the thoracic cavity. It can be detected in conditions such as pleural effusion, atelectasis, or consolidation.