respiratory

Key muscles involved in respiration:
- Sternocleidomastoids: Muscles located on the side of the neck, assisting in raising the sternum during inhalation.
- Scalenes: Group of muscles in the neck that assist with respiration.
- Intercostals: Muscles located between the ribs that help expand and retract the thoracic cavity during breathing.

Inspiration: Active process of breathing in air.
Expiration: Passive process that occurs when the lungs recoil and the diaphragm relaxes.

Oxygen Diffusion: Oxygen enters the bloodstream from the alveoli.
Carbon Dioxide Diffusion: Carbon dioxide diffuses from the blood into the alveoli for expiration.

Hemoglobin: Protein in red blood cells that carries oxygen throughout the body.
- Anemia Impact: Individuals with anemia have a reduced hemoglobin count, which can lead to respiratory symptoms due to decreased oxygen transport capacity.

Transport Forms:
- Majorly transported as bicarbonate ions.
- Smaller amounts are bound to hemoglobin and dissolved in plasma.

Regulated by the brain through a dual impulse system that controls the respiratory rhythm and depth of breathing.

The heart and lungs function together in the respiratory and circulatory systems.
Focused Assessment: Essential to assess both respiratory and cardiac function when evaluating patients with respiratory distress.

Myocardial Pump: Heart muscle that contracts to circulate blood.
Coronary Circulation: Supplies blood to the heart muscle.
Systemic Circulation: Blood flow from the left ventricle through the body back to the right atrium.
Electrical Conduction System: Controls heart rate through the sinoatrial (SA) node (pacemaker).
- Monitored via EKG/ECG (Electrocardiogram).

Physiological Factors:
- Conditions that limit oxygen delivery (e.g., anemia, edema).
- Hypovolemia: Decreased blood volume causing circulation problems.
- Increased Metabolic Rate: Examples include elevated heart rate during fever or pain.
Chronic Conditions: Increased difficulty in patient care for those with COPD, heart failure, and diabetes due to their weakened health status.
Substance Abuse: Can depress respiratory function; overdose situations may require interventions such as Narcan.

Definition: Formation of a blood clot in a deep vein, often in the legs.
Symptoms: Pain, swelling, redness in affected area.
Risk Factors: Post-operative patients, those on bed rest, individuals with a history of DVT.

Definition: A DVT that travels to the lungs, causing a blockage.
Potential Complications: Can lead to serious respiratory distress or systemic complications.

Effects of pregnancy and obesity on respiratory capacity.
Musculoskeletal Abnormalities: Conditions such as scoliosis, which limit lung expansion.
Neuromuscular Diseases and CNS Alterations: Impact breathing mechanics.

Common chronic conditions encountered in nursing include heart failure and chronic lung diseases like COPD.

Infants: Immature immune systems and small airways increase infection risk.
Youth: Lifestyle habits such as diet affect respiratory health.
Older Adults: Age-related stiffness of the chest wall and loss of muscular tone reduce lung function.

Symptom Recognition: Nurses should evaluate symptoms like pain, fatigue, and dyspnea (shortness of breath).
Assessment Techniques:
- Order: Inspection, palpation, percussion, auscultation.
Inspection: Observe for symmetry in chest expansion, presence of deformities or use of accessory muscles.
Vital Signs: Normal respiratory rate for adults is 12-20 breaths per minute; bradypnea (under 12) and tachypnea (over 20) are terms for abnormal rates.

Normal Breath Sounds: Turbulent airflow produces sounds upon auscultation, with inspiration sounds typically louder than expiration.
Types of Breath Sounds:
- Bronchial: Loud, high-pitched sounds over the trachea.
- Bronchovesicular: Medium-pitched sounds over main bronchi.
- Vesicular: Soft sounds over peripheral bronchioles.

Absence of Sounds: Could indicate collapsed lung or severe obstruction.
Decreased Sounds: Can suggest emphysema or inadequate ventilation.
Adventitious Sounds:
- Crackles/Rales: Indicate fluid in the alveoli; common in conditions like CHF.
- Wheezing: High-pitched sounds during expiration due to narrowed airways.
- Rhonchi: Low-pitched sounds indicative of secretions in the airways.
- Stridor: Harsh sound indicating upper airway obstruction.
- Pleural Friction Rub: Grating sound from pleural surfaces rubbing together.

Nurses play a critical role in recognizing early symptoms of hypoxia and implementing preventive measures.
Regular vaccination and acute care management for respiratory patients are essential.

Hydration and Humidification: Important for maintaining airway moisture and secretion clearance.
Chest Physiotherapy: Techniques such as percussion and postural drainage to help clear secretions from lungs.
Oxygen Therapy Devices: Types of masks and devices to deliver appropriate oxygen levels.
Monitoring Pulse Oximetry: Maintaining oxygen saturation levels >95% is critical in respiratory care.

Patient Positioning: Elevating the head of the bed facilitates easier breathing, particularly in patients with respiratory distress.