{
  "name": "Respiratory Acidosis",
  "slug": "respiratory-acidosis",
  "url": "https://nursingplex.com/care-plans/respiratory-acidosis",
  "category": "Endocrine & Metabolic",
  "summary": "CO2 retention from hypoventilation; airway support, ventilation and cause reversal.",
  "nursing_diagnoses": [
    "Impaired gas exchange",
    "Ineffective breathing pattern",
    "Acute confusion"
  ],
  "overview": [
    "Respiratory acidosis occurs when alveolar ventilation is inadequate to eliminate carbon dioxide, causing CO2 (and therefore carbonic acid) to accumulate in the blood and lowering pH below 7.35 with an elevated PaCO2 above 45 mmHg. Causes fall into two broad categories: conditions that depress the respiratory drive (opioid or sedative overdose, brainstem injury, severe obesity/hypoventilation) and conditions that impair the mechanics of breathing or gas exchange (COPD exacerbation, severe asthma, neuromuscular disease, chest wall deformity, or inadequate mechanical ventilation).",
    "The body attempts metabolic compensation by having the kidneys retain bicarbonate over 3-5 days, which is why acute respiratory acidosis (uncompensated, sudden CO2 rise) is far more dangerous than chronic respiratory acidosis (compensated, as seen in stable COPD patients who tolerate a chronically elevated CO2 with a near-normal pH). Clinical manifestations reflect the direct depressant effect of CO2 and acidosis on the central nervous system: headache, confusion, drowsiness progressing to stupor and coma, along with tachycardia, dysrhythmias, and warm flushed skin from CO2-induced vasodilation.",
    "Nursing priorities are to identify and correct the cause of hypoventilation, support ventilation (positioning, bronchodilators, secretion clearance, or mechanical ventilation), monitor arterial blood gases and neurologic status closely, and use extreme caution with supplemental oxygen in chronic CO2 retainers, since aggressive correction of hypoxemia can blunt the hypoxic respiratory drive and worsen hypoventilation."
  ],
  "key_facts": [
    {
      "label": "ABG pattern",
      "text": "pH < 7.35, PaCO2 > 45 mmHg; elevated HCO3 indicates renal compensation in chronic cases."
    },
    {
      "label": "Acute vs chronic",
      "text": "Acute respiratory acidosis is uncompensated and dangerous; chronic (e.g., COPD) is renally compensated with near-normal pH despite high CO2."
    },
    {
      "label": "Oxygen caution",
      "text": "In chronic CO2 retainers, titrate oxygen carefully (target SpO2 88-92%) since aggressive oxygenation can suppress the hypoxic drive and worsen hypoventilation."
    },
    {
      "label": "Most urgent cause to rule out",
      "text": "Opioid/sedative overdose, since naloxone reversal can rapidly correct ventilation."
    },
    {
      "label": "CNS effects",
      "text": "CO2 is a potent cerebral vasodilator and CNS depressant, explaining the progression from headache to confusion to coma."
    }
  ],
  "nursing_priorities": [
    "Identify and treat the underlying cause of hypoventilation.",
    "Support and improve airway clearance and ventilation.",
    "Monitor arterial blood gases and neurologic status for deterioration.",
    "Use supplemental oxygen cautiously in chronic CO2 retainers.",
    "Prepare for and support noninvasive or invasive mechanical ventilation as needed.",
    "Monitor for cardiac dysrhythmias associated with acidosis and hypoxemia.",
    "Prevent complications of prolonged hypercapnia (cerebral edema, coma)."
  ],
  "assessment": {
    "subjective": [
      "Headache and feelings of confusion or difficulty concentrating",
      "Shortness of breath or a sense of not being able to breathe deeply",
      "Drowsiness or extreme fatigue",
      "Reports of chest tightness or difficulty clearing secretions"
    ],
    "objective": [
      "ABG showing pH below 7.35 with PaCO2 above 45 mmHg",
      "Decreased level of consciousness, ranging from lethargy to coma",
      "Tachycardia, dysrhythmias, and warm, flushed skin from vasodilation",
      "Shallow, slow, or labored respirations depending on cause",
      "Diminished breath sounds, wheezing, or crackles depending on etiology",
      "Asterixis (flapping tremor) in severe hypercapnia",
      "Diaphoresis and signs of respiratory distress in acute presentations"
    ],
    "related_factors": [
      "CNS depression from opioid, sedative, or anesthetic overdose",
      "Chronic obstructive pulmonary disease exacerbation or severe asthma",
      "Neuromuscular disease impairing respiratory muscle strength (myasthenia gravis, ALS, Guillain-Barré)",
      "Chest wall or spinal deformity restricting lung expansion",
      "Inadequate mechanical ventilator settings",
      "Airway obstruction from secretions, foreign body, or bronchospasm",
      "Severe obesity hypoventilation syndrome"
    ]
  },
  "goals": [
    "The client will demonstrate ABG values returning toward normal (pH 7.35-7.45, PaCO2 35-45 mmHg) or an established compensated baseline.",
    "The client will maintain a patent airway and effective breathing pattern.",
    "The client will demonstrate improved level of consciousness and orientation as CO2 levels normalize.",
    "The client will maintain oxygen saturation at a level appropriate to their baseline without suppression of respiratory drive.",
    "The client will remain free of cardiac dysrhythmias related to acid-base and oxygenation disturbance."
  ],
  "interventions": [
    {
      "title": "1. Identifying and treating the underlying cause",
      "points": [
        "Assess for and treat CNS depression promptly; administer naloxone as ordered for suspected opioid overdose and reassess respiratory rate/depth.",
        "Administer bronchodilators, corticosteroids, and secretion-clearing measures for COPD or asthma exacerbation per protocol.",
        "Assess neuromuscular strength (vital capacity, negative inspiratory force) in patients with neuromuscular disease to anticipate ventilatory failure.",
        "Review sedative/opioid dosing in hospitalized patients and adjust or hold doses when respiratory depression is noted.",
        "Suction and clear airway obstructions promptly when secretions or foreign material are impairing ventilation."
      ]
    },
    {
      "title": "2. Supporting ventilation and oxygenation",
      "points": [
        "Position the patient upright or in high-Fowler's position to maximize diaphragmatic excursion and lung expansion.",
        "Encourage deep breathing, coughing, and use of incentive spirometry to improve alveolar ventilation.",
        "Titrate supplemental oxygen carefully in known CO2 retainers, targeting a lower SpO2 goal (typically 88-92%) to avoid suppressing hypoxic respiratory drive.",
        "Anticipate and assist with noninvasive positive pressure ventilation (BiPAP) for moderate hypercapnic respiratory failure.",
        "Prepare for intubation and mechanical ventilation if noninvasive measures fail or level of consciousness deteriorates."
      ]
    },
    {
      "title": "3. Monitoring and reassessment",
      "points": [
        "Obtain serial arterial blood gases to trend pH, PaCO2, and bicarbonate response to interventions.",
        "Assess level of consciousness frequently using a standardized scale, since worsening confusion signals rising CO2.",
        "Monitor continuous pulse oximetry and cardiac rhythm, watching for dysrhythmias associated with acidosis and hypoxemia.",
        "Assess for asterixis and other signs of hypercapnic encephalopathy.",
        "Document respiratory rate, depth, and pattern with each assessment to detect subtle deterioration."
      ]
    },
    {
      "title": "4. Preventing complications",
      "points": [
        "Elevate the head of the bed to reduce intracranial pressure risk from CO2-induced cerebral vasodilation.",
        "Implement aspiration precautions in patients with decreased level of consciousness.",
        "Maintain adequate hydration to help thin secretions for easier clearance, unless contraindicated by comorbidity.",
        "Reassess sedative and opioid orders regularly in at-risk hospitalized patients to prevent iatrogenic respiratory depression."
      ]
    }
  ],
  "patient_teaching": [
    "Take prescribed inhalers, bronchodilators, or medications for underlying lung disease exactly as directed.",
    "Recognize early symptoms of worsening breathing (increased shortness of breath, confusion, drowsiness) and seek care promptly.",
    "Avoid taking sedatives, sleep aids, or opioids beyond what is prescribed, especially in combination, due to added respiratory depression risk.",
    "Understand the purpose and safe use of home oxygen therapy if prescribed, including correct flow rate.",
    "Learn pursed-lip breathing and other techniques to improve ventilation if living with chronic lung disease.",
    "Attend pulmonary rehabilitation or follow-up appointments as recommended for chronic conditions.",
    "Avoid smoking and secondhand smoke exposure, which worsens underlying respiratory disease."
  ]
}