oxygenation

Overview of Health Issues Affecting Oxygenation

Illegal Substances & Smoking: Can negatively impact oxygenation; assess smoking history through pack year history.
- Calculate: (Number of packs smoked per day) x (Years smoked).
- Risk factor: > 20 pack years is significant.
Older Adults: Often affected by calcification and conditions like osteoarthritis, leading to increased ventricular wall thickness and oxygen demands.

DASH Diet (Dietary Approaches to Stop Hypertension): Recommended dietary plan that promotes heart health; students should familiarize themselves with it.
Hydration: Aim for 1500 to 2000 ml of fluids daily.
Exercise: Current recommendations suggest 30 to 60 minutes of moderate activity daily.

Depression of Nervous System: Substance use (like opioids) can depress respiratory drive, decreasing oxygenation.
Increased Metabolic Demand:
- Conditions like fever, wound healing, and exercise raise oxygen demand.
- Monitor for increased metabolic rate as it demands more oxygen.

Oxygen Carrying Capacity:
- Conditions like anemia (low hemoglobin) decrease oxygen carrying capacity.
- Carbon Monoxide Poisoning: CO binds better than O2 to hemoglobin.
- Hypovolemia: Reduced blood volume affects circulation and oxygen delivery.
Conditions affecting Lung Expansion:
- Neuromuscular diseases (e.g., ALS) and physical trauma can significantly hinder lung mechanics.

Signs of Hypoxia:
- Symptoms: confusion, bluish skin tone, increased heart rate, etc.
Monitoring Techniques: Use of pulse oximetry is crucial; levels should be above 95%.
Signs of Hyperventilation: Lightheadedness, tingling in extremities, rapid breathing, etc.

Arrhythmias: Assess for tachycardia (fast heartbeat) and bradycardia (slow heartbeat).
Heart Failure Types:
- Myocardial ischemia vs. myocardial infarction:
  - Ischemia: Reduced blood flow (typically short-duration).
  - Infarction: Prolonged blood flow obstruction leading to tissue death (myocardial infarction).

High Cholesterol: Total cholesterol > 200 mg/dL poses a significant health risk. LDL (bad cholesterol) should be kept low (< 130 mg/dL). HDL (good cholesterol) should be high (women > 55 mg/dL, men > 45 mg/dL).
Regular Monitoring: Essential for early intervention in high-risk populations.

Nursing Assessment: Identifying history of respiratory issues, smoking, and comorbidities.
Primary Prevention: Education and lifestyle changes targeting heart health.
- Examples include diet, exercise, vaccination, and smoking cessation.
Secondary Prevention: Regular screenings and early interventions for at-risk populations (e.g., blood pressure checks, diabetes monitoring).

Response to Symptoms: Monitor for signs of heart attack (like chest pain) and ensure rapid response by calling emergency services if necessary.

Oxygen Therapy: Proper delivery techniques using various methods (nasal cannula, masks) depending on need and patient condition.
Positioning: Help ease breathing by positioning the patient (e.g., high-fowler position, tripod position).
Breathing Techniques: Teach patients pursed lip breathing and diaphragmatic breathing exercises to improve oxygenation.
Maintenance of Airway: Coughing and deep breathing exercises to clear secretions. Incentive spirometry use after surgery to prevent pneumonia is also crucial.

ABG Interpretation: Important for understanding acid-base balance and respiratory function.
- Be familiar with how to interpret arterial blood gases: Normal pH, pCO2, pO2, bicarbonate levels.

Use of Incentive Spirometers: Educate patients on correct usage to enhance lung expansion and improve respiratory health.
Utilization of Artificial Airways: Knowledge on different types (oral, nasal, and endotracheal tubes) and their indications for use during surgical and nonsurgical emergencies.

Documentation: Maintain accurate records of patient history, intervened actions, and ongoing evaluations to manage patients effectively.
Education: Continual education on lifestyle changes, medication adherence, and breathing techniques to empower patients and improve outcomes.