A patient's ABG reports showing pH 7.30, PaCO2 50, bicarbonate level is 24, than what intervention is appropr… - PGIMER NO - 2020

PGIMER NO - 2020

Medical Surgical Nursing

Hard

Appeared in: PGIMER NO - 2020

Explanation

The patient's ABG values (pH 7.30, PaCO₂ 50, HCO₃⁻ 24) are characteristic of uncompensated respiratory acidosis.
Respiratory acidosis is caused by alveolar hypoventilation, leading to the retention of carbon dioxide (CO₂).
The primary and most appropriate intervention is to improve the patient's ventilation to facilitate the removal ('blowing off') of excess CO₂.
Improving ventilation directly addresses the root cause of the imbalance, helping to normalize the PaCO₂ and, consequently, the blood pH.

Option B: Calcium gluconate is not used to treat respiratory acidosis. It is primarily administered to counteract the cardiotoxic effects of severe hyperkalemia or to treat symptomatic hypocalcemia.
Option C: While hypoxemia may coexist with respiratory acidosis, administering oxygen alone does not correct the primary problem of CO₂ retention. The core issue is inadequate ventilation, not just poor oxygenation.
Option D: Sodium bicarbonate is a base used to treat metabolic acidosis. Administering it for respiratory acidosis is inappropriate because it does not address the underlying cause (hypoventilation) and can lead to rebound alkalosis or fluid overload.

Clinical Relevance

Nursing practice connection: Knowing ABG Interpretation and Intervention for Respiratory Acidosis helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
Recognizing respiratory acidosis from ABG results is a critical nursing skill, as it indicates respiratory compromise that can quickly lead to respiratory failure if not addressed.
The nurse's primary role is to assess the patient's respiratory status, identify the cause of hypoventilation (e.g., sedation, airway obstruction, muscle weakness), and initiate interventions to improve breathing.
What if? If the patient's ABG showed pH 7.36, PaCO₂ 50, and HCO₃⁻ 30, this would indicate fully compensated chronic respiratory acidosis. The intervention would focus on managing the underlying chronic condition (like COPD) rather than acute ventilation, as the body has already adapted to the high CO₂.

How to Approach the Question

Step 1: Analyze the pH. A value below 7.35 indicates acidosis. A value above 7.45 indicates alkalosis. Here, 7.30 is acidosis.
Step 2: Analyze the PaCO₂ (the respiratory component). A value above 45 mmHg is acidic; below 35 mmHg is alkalotic. Here, 50 is acidic. Since both pH and PaCO₂ are acidic, this points to a respiratory cause.
Step 3: Analyze the HCO₃⁻ (the metabolic component). A value below 22 mEq/L is acidic; above 26 mEq/L is alkalotic. Here, 24 is normal.
Step 4: Determine the primary disorder and compensation. The pH is acidic, and the respiratory component (PaCO₂) matches this direction. The metabolic component (HCO₃⁻) is normal. This confirms uncompensated respiratory acidosis.
Step 5: Link the disorder to the intervention. Respiratory acidosis is caused by CO₂ retention from hypoventilation. Therefore, the correct intervention must improve ventilation.

Concept Tested & Keywords

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