Nursing practice questions with comprehensive rationales
NurseDive Free Nursing Practice Question
A nurse is reviewing the laboratory values of a client who has respiratory acidosis. Which of the following findings should the nurse expect?
A. Potassium 3.3 mEq/L.
Potassium levels are not directly related to respiratory acidosis. Potassium levels may be affected in certain conditions, but they are not specific indicators of respiratory acidosis.
B. HCO3- 30 mEq/L.
HCO3- (bicarbonate) levels may be elevated in metabolic alkalosis, not respiratory acidosis. In respiratory acidosis, the primary abnormality is an increased PacO2, not HCO3-.
C. PacO2 50 mm Hg.
The partial pressure of carbon dioxide (PacO2) is a key parameter in diagnosing respiratory acidosis. In this case, a PacO2 of 50 mm Hg suggests hypoventilation and an excess of carbon dioxide in the blood, contributing to acidosis.
D. pH 7.45.
The pH level given (pH 7.45) is within the normal range, which contradicts the diagnosis of respiratory acidosis. In respiratory acidosis, the pH would be expected to be below the normal range of 7.35-7.45 due to increased carbon dioxide levels.
This question is an excerpt from Nurse Dive's nursing test bank - ATI custom Fluid and Electrolyte Exam Summer 2023 Proctored Exam. Take the full exam now
Full Explanation
PacO2 50 mm Hg. Choice A rationale:
Potassium levels are not directly related to respiratory acidosis. Potassium levels may be affected in certain conditions, but they are not specific indicators of respiratory acidosis.
Choice B rationale:
HCO3- (bicarbonate) levels may be elevated in metabolic alkalosis, not respiratory acidosis. In respiratory acidosis, the primary abnormality is an increased PacO2, not HCO3-.
Choice C rationale:
The partial pressure of carbon dioxide (PacO2) is a key parameter in diagnosing respiratory acidosis. In this case, a PacO2 of 50 mm Hg suggests hypoventilation and an excess of carbon dioxide in the blood, contributing to acidosis.
Choice D rationale:
The pH level given (pH 7.45) is within the normal range, which contradicts the diagnosis of respiratory acidosis. In respiratory acidosis, the pH would be expected to be below the normal range of 7.35-7.45 due to increased carbon dioxide levels.
Similar Questions
A nurse is caring for a client on the medical-surgical unit. Laboratory Results. Vital Signs - Day 1 - 1200: Temperature 100.9°F (38.2°C), Respiratory Rate 26/min, Heart Rate 109/min, Blood Pressure 89/58 mmHg, Pain Score 9/10. Day 2 - Medication Administration - 0700: Temperature: 98.6°F (37°C), Heart Rate 98/min, Respiratory Rate 20/min, Record, Pain Score: 2/10, Blood Pressure 111/62 mmHg. Nurses' Notes - Vital Signs. Complete the diagram by dragging from the choices below to specify what condition the client is most likely experiencing. 2 actions the nurse should take to address that condition, and 2 parameters the nurse should monitor to assess the client's progress.
A. Hypocalcemia.
Hypocalcemia can be influenced by changes in serum albumin levels, as calcium may bind to albumin. Correcting calcium levels based on albumin can help determine the actual calcium status. Action to Take 2: Request a STAT ECG. Rationale: Hypocalcemia can lead to prolonged QT intervals on an electrocardiogram (ECG). A STAT ECG is necessary to assess cardiac function and detect any potential arrhythmias. Parameters to Monitor 1: Serum bicarbonate level. Rationale: Monitoring serum bicarbonate levels can help assess the client's acid-base balance and metabolic status. Abnormal bicarbonate levels may indicate metabolic disturbances. Parameters to Monitor 2: Intake and Output. Rationale: Monitoring intake and output is essential to evaluate the client's fluid balance and kidney function. Hypocalcemia can impact renal function, and assessing urine output is crucial.
B. Hypernatremia.
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C. Hyperkalemia.
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D. Potential Condition. Action to Take 1: Prepare to check a serum albumin level. Action to Take 2: Request a STAT ECG. Parameters to Monitor 1: Serum bicarbonate level. Parameters to Monitor 2: Intake and Output.
-
Full Explanation
Hypocalcemia. Action to Take 1: Prepare to check a serum albumin level.
Rationale:
Hypocalcemia can be influenced by changes in serum albumin levels, as calcium may bind to albumin. Correcting calcium levels based on albumin can help determine the actual calcium status. Action to Take 2: Request a STAT ECG. Rationale: Hypocalcemia can lead to prolonged QT intervals on an electrocardiogram (ECG). A STAT ECG is necessary to assess cardiac function and detect any potential arrhythmias. Parameters to Monitor 1: Serum bicarbonate level. Rationale: Monitoring serum bicarbonate levels can help assess the client's acid-base balance and metabolic status. Abnormal bicarbonate levels may indicate metabolic disturbances. Parameters to Monitor 2: Intake and Output. Rationale: Monitoring intake and output is essential to evaluate the client's fluid balance and kidney function. Hypocalcemia can impact renal function, and assessing urine output is crucial.
A nurse is caring for a client on the medical-surgical unit. Laboratory Results. Nurses' Notes - Day 1 - 1200: Medication Administration Record. Day 2 - 0700: Nurses' Notes - Vital Signs.
Client admitted to the medical-surgical unit for treatment of acute pancreatitis. Client states they developed severe abdominal pain this morning and came to the emergency department for treatment. Client states they have had about 3 episodes of vomiting since this morning and requests a medication to help with nausea. Client is NPO. A client is wincing and reports abdominal pain as 9/10 on 0-10 pain scale. Sclera of eyes are yellow and mucous membranes are dry. The client is dyspneic. Lungs clear to auscultation. S1 & S2 heart sounds heard and tachycardic. Abdomen is distended along with guarding. Bowel sounds are active in all Quadrants. Skin is pale and clammy. AROM of all extremities. +1 peripheral pulses. Past medical history: End-stage renal disease and receiving hemodialysis. The client requests medication to help with diarrhea. Client states they have not had any nausea or vomiting since yesterday but states "I have had four loose stools in the last few hours.”. They rate abdominal pain 2 on 0-10 pain scale. No abdominal guarding. Chvostek sign present and positive Trousseau sign. Provider notified. Complete the diagram by dragging from the choices below to specify what condition the client is most likely experiencing. 2 actions the nurse should take to address that condition, and 2 parameters the nurse should monitor to assess the client's progress.
A. Hypocalcemia
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B. Hypernatremia.
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C. Hyperkalemia.
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D. D. Potential Condition. Action to Take 1: Prepare to check a serum albumin level. Action to Take 2: Request a STAT ECG. Parameters to Monitor 1: Serum bicarbonate level. Parameters to Monitor 2: Intake and Output.
Based on the provided information, it's challenging to make a definitive diagnosis with the given laboratory results and clinical presentation. The client's symptoms, such as severe abdominal pain, vomiting, dyspnea, yellow sclera, dry mucous membranes, tachycardia, and positive Chvostek and Trousseau signs, suggest a complex clinical picture that requires further investigation and assessment. Action to Take 1: Notify the provider. Rationale: The client's condition appears to be critical and requires immediate medical attention. Notifying the provider will initiate a comprehensive evaluation and potential interventions. Action to Take 2: Withhold medication for diarrhea until the underlying cause is determined. Rationale: Diarrhea can be a symptom of various conditions, and administering medication without a clear diagnosis may mask important clinical information. Parameters to Monitor 1: Serum bicarbonate level. Rationale: Monitoring serum bicarbonate levels can help identify potential acid-base imbalances and assess the client's metabolic status, especially given the history of end-stage renal disease. Parameters to Monitor 2: Intake and Output. Rationale: Monitoring intake and output is essential to assess fluid balance and kidney function, especially in a client with end- stage renal disease and potential electrolyte imbalances.
Full Explanation
Potential Condition.
Based on the provided information, it's challenging to make a definitive diagnosis with the given laboratory results and clinical presentation. The client's symptoms, such as severe abdominal pain, vomiting, dyspnea, yellow sclera, dry mucous membranes, tachycardia, and positive Chvostek and Trousseau signs, suggest a complex clinical picture that requires further investigation and assessment. Action to Take 1: Notify the provider. Rationale: The client's condition appears to be critical and requires immediate medical attention. Notifying the provider will initiate a comprehensive evaluation and potential interventions. Action to Take 2: Withhold medication for diarrhea until the underlying cause is determined. Rationale: Diarrhea can be a symptom of various conditions, and administering medication without a clear diagnosis may mask important clinical information. Parameters to Monitor 1: Serum bicarbonate level.
Rationale:
Monitoring serum bicarbonate levels can help identify potential acid-base imbalances and assess the client's metabolic status, especially given the history of end-stage renal disease. Parameters to Monitor 2: Intake and Output. Rationale: Monitoring intake and output is essential to assess fluid balance and kidney function, especially in a client with end- stage renal disease and potential electrolyte imbalances.
A nurse is caring for a client on the medical-surgical unit. Laboratory Results. Day 1 - Medication Administration - 1200: Record. Serum amylase 680 units/L (60 to 120 units/L).
Serum lipase 300 units/L (0 to 160 units/L). Calcium 9.0 mg/dL (9 to 10.5 mg/dL). Magnesium
1.8 mEq/L (1.3 to 2.1 mEq/L). Potassium 5.0 mEq/L (3.5 to 5 mEq/L). Sodium 144 mEq/L (136 to 145 mEq/L). Nurses' Notes - Vital Signs. Complete the diagram by dragging from the choices below to specify what condition the client is most likely experiencing. 2 actions the nurse should take to address that condition, and 2 parameters the nurse should monitor to assess the client's progress.
A. Hypocalcemia.
Hypernatremia is the most likely condition the client is experiencing based on the laboratory result of Sodium 144 mEq/L, which is above the normal range of 136 to 145 mEq/L. Hypernatremia is an elevated sodium level in the blood and can cause various symptoms like extreme thirst, dry mucous membranes, and altered mental status.
B. Hypernatremia.
To address hypernatremia, the nurse should take two actions. Action 1: Prepare to check a serum albumin level. This is important as hypernatremia can be caused by a relative water deficit due to excess solutes, and measuring serum albumin helps assess the body's water balance. Action 2: Request a STAT ECG. Hypernatremia can lead to cardiac arrhythmias, so an ECG is essential to monitor the patient's heart rhythm. Parameters to Monitor: Parameter 1 - Serum bicarbonate level: Monitoring bicarbonate levels helps evaluate acid-base balance and assess the impact of hypernatremia on the body's buffering systems. Parameter 2 - Intake and Output: Monitoring the patient's fluid intake and output is crucial to ensure proper hydration and track response to treatment.
C. Hyperkalemia.
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D. Potential Condition. Action to Take 1: Prepare to check a serum albumin level. Action to Take 2: Request a STAT ECG. Parameters to Monitor 1: Serum bicarbonate level. Parameters to Monitor 2: Intake and Output.
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Full Explanation
Hypernatremia.
Choice A rationale:
Hypernatremia is the most likely condition the client is experiencing based on the laboratory result of Sodium 144 mEq/L, which is above the normal range of 136 to 145 mEq/L. Hypernatremia is an elevated sodium level in the blood and can cause various symptoms like extreme thirst, dry mucous membranes, and altered mental status.
Choice B rationale:
To address hypernatremia, the nurse should take two actions. Action 1: Prepare to check a serum albumin level. This is important as hypernatremia can be caused by a relative water deficit due to excess solutes, and measuring serum albumin helps assess the body's water balance. Action 2: Request a STAT ECG. Hypernatremia can lead to cardiac arrhythmias, so an ECG is essential to monitor the patient's heart rhythm. Parameters to Monitor: Parameter 1 - Serum bicarbonate level: Monitoring bicarbonate levels helps evaluate acid-base balance and assess the impact of hypernatremia on the body's buffering systems. Parameter 2 - Intake and Output: Monitoring the patient's fluid intake and output is crucial to ensure proper hydration and track response to treatment.