Oxygenation

Introduction to Respiratory Disorders

  • Mention of decreased compliance potentially relating to anemia and its impact on hemoglobin levels.

  • Current learning focus on respiratory system teaching, particularly about pathology.

Physiological Factors Affecting Oxygenation

  • Respiratory Functionality:

    • Decreased compliance can impact oxygen and carbon dioxide levels.

    • Excess removal of carbon dioxide from the body can occur in conditions like anxiety, pain, fever, and early respiratory distress.

    • Potential symptoms from decreased CO2 levels: dizziness, tingling, lightheadedness, and transitions into hypoxia.

  • Pathophysiology of Hypoxia:

    • Conditions leading to hypoxia include COPD, severe anemia, and poor circulation.

    • Role of blood circulation in oxygen transfer:

    • Right side of the heart sends deoxygenated blood to lungs (blue blood).

    • Oxygenated blood returns to left side and is pumped throughout the body.

  • Impact of Blood Pressure on Perfusion:

    • Low blood pressure results in inadequate perfusion and reduced oxygen delivery to organs, such as the liver.

    • Early Signs of Poor Perfusion:

    • Symptoms include pale skin, weak or irregular pulses, delayed capillary refill, decreased urine output, and altered mental status (restlessness, confusion, lethargy).

    • Tachycardia may occur as the heart compensates for low perfusion.

Risk Factors Affecting Oxygenation

  • Physiological Factors:

    • Physical conditions affecting the body’s ability to oxygenate.

  • Environmental Factors:

    • Includes air pollution and exposure to secondhand smoke.

  • Chest Wall Movement:

    • Conditions limiting chest wall movement (obesity, musculoskeletal injuries, neuromuscular disorders) ensure chest expansion is crucial for effective ventilation.

Respiratory Assessments

  • Importance of knowing normal adult respiratory values and variation due to conditions such as anemia.

  • High tide assessments address the patient's breathing patterns.

Management of Pulmonary Secretions

  • Key Concepts and Interventions:

    • Mobilization of pulmonary secretions is crucial for immobile or postoperative patients, who are more prone to pneumonia.

    • Interventions include:

    1. Encouraging coughing and deep breathing.

    2. Using incentive spirometry to facilitate lung expansion and mobilization of secretions.

    • Caution regarding the technique involved with incentive spirometry:

    • Avoid stopping during inhalation and focus on expanding the lungs.

  • Importance of Hydration:

    • Hydration is necessary to keep mucus in lungs easily movable; dehydration leads to thick, sticky secretions.

    • Emphasis on reminding patients (especially elderly) to maintain water intake throughout the day.

  • Utilizing Humidification:

    • Adds moisture to the air supplied to the patient to avoid drying airways and reducing secretions’ thickness.

    • Particularly beneficial for asthma patients and those with postoperative concerns.

  • Chest Physiotherapy:

    • Recommended in the mobilization of secretions for long-term bedridden patients.

Oxygen Therapy Guidelines

  • Requirement for medical orders to titrate oxygen therapy.

  • Oxygen Safety Procedures:

    • Educate patients on oxygen unit safety, particularly in the home setting such as checking oxygen saturation (O2 stats) and monitoring for symptoms indicative of respiratory distress (shallow breathing, dizziness, confusion).

    • Use of water-based lubricants for patients on oxygen; Vaseline is flammable.

  • Explanation of Fraction of Inspired Oxygen (FiO2):

    • Room air constitutes approximately 21% FiO2.

    • Increased oxygen delivery correlates with an increase in FiO2 concentrations.

Conclusion

  • Share anecdotes regarding nursing practice and patient interactions.

  • Emphasis on providing the highest possible oxygenation without intubation as essential for patient care.