Introduction and Assessment of Respiratory Status
Respiratory support begins with careful observation and systematic assessment. Nurses evaluate the patient for signs of adequate ventilation and oxygenation before any intervention is applied.
- Rate and Rhythm: Counting breaths per minute while observing the chest rise and fall. Normal adult rates range between 12 and 20 breaths per minute.
- Depth and Effort: Assessing whether breathing is shallow, deep, labored, or quiet, noting the use of accessory muscles in the neck and abdomen.
- Skin Color: Checking for cyanosis in the nail beds, lips, or earlobes, which points to low blood oxygen levels.
- Breath Sounds: Using a stethoscope to listen for clear air entry, wheezes, crackles, or diminished sounds across all lung fields.
Recognizing Signs of Respiratory Distress
Identifying respiratory distress early prevents catastrophic cardiorespiratory arrest. Nurses look for specific physiological cues that tell the story of a failing airway or inadequate gas exchange.
- Tachypnea: A persistent breathing rate above 24 breaths per minute in adults.
- Dyspnea: The subjective feeling of breathlessness or air hunger reported by the patient.
- Retractions: Sinking of the skin around the ribs and sternum during inspiration.
- Nasal Flaring: Widening of the nostrils during breathing, commonly seen in children experiencing air hunger.
- Altered Mental Status: Restlessness, confusion, or lethargy caused by oxygen deprivation to the brain.
Basic Airway Positioning and Management
Proper body alignment opens upper airways blocked by relaxed tissues or secretions. Simple physical maneuvers require no special equipment and can be performed immediately at the bedside.
- High-Fowler's Position: Sitting the patient upright at a 60 to 90-degree angle to maximize chest expansion and lung volume.
- Orthopneic Position: Having the patient lean forward over a bedside table, which engages accessory muscles to ease breathing.
- Chin-Lift and Head-Tilt: Manual maneuvers used to lift the tongue away from the back of the pharynx in an unresponsive patient.
- Lateral Recovery Position: Placing the patient on their side to prevent aspiration of saliva or vomitus.
Oxygen Therapy Delivery Systems
Supplemental oxygen is treated as a medical drug requiring a clinical indication, safe handling, and careful titration. Different delivery devices offer varying fractions of inspired oxygen.
- Nasal Cannula: Delivers low-flow oxygen from 1 to 6 liters per minute, suitable for patients needing mild support while allowing them to eat and speak.
- Simple Face Mask: Provides moderate oxygen flow at 5 to 10 liters per minute, covering both the nose and mouth.
- Venturi Mask: Delivers precise, controlled oxygen concentrations through specialized color-coded adapters, ideal for patients with chronic obstructive pulmonary disease.
- Non-Rebreather Mask: Equipped with a reservoir bag and one-way valves to deliver high concentrations of oxygen close to 100 percent.
Oxygen Safety and Precautions
Oxygen supports combustion, meaning it makes fires ignite faster and burn hotter. Nursing staff must enforce strict safety rules wherever oxygen is stored or administered.
- No Smoking Rules: Display clear warning signs and prohibit matches, lighters, or smoking in the immediate area.
- Avoid Petroleum Products: Keep petroleum jelly or oil-based lubricants away from oxygen tubing and facial skin because they can ignite under high oxygen concentrations.
- Secure Cylinders: Store compressed gas tanks upright and chained to a wall or heavy trolley to prevent them from falling and rupturing.
- Electrical Safety: Ensure electrical equipment near the patient is properly grounded and free of frayed wires.
Breathing Exercises and Lung Expansion
Lung expansion techniques help prevent atelectasis and mobilize retained pulmonary secretions, particularly after surgery or prolonged bed rest.
- Deep Breathing Exercises: Instructing the patient to take slow, deep breaths through the nose, hold for a few seconds, and exhale slowly through pursed lips.
- Pursed-Lip Breathing: Exhaling slowly against partially closed lips, which creates backpressure in the airways to keep them open longer and relieve trapped air.
- Incentive Spirometry: A mechanical device that encourages patients to take long, slow, deep inhalations by providing visual feedback on volume achieved.
- Controlled Coughing: Teaching patients to splint surgical incisions with a pillow while coughing deeply to clear mucus without straining wounds.
Monitoring, Documentation, and Prevention of Complications
Continuous vigilance and accurate record-keeping protect patients receiving respiratory support. Nurses track trends rather than isolated numbers to catch deterioration early.
- Pulse Oximetry: Non-invasive monitoring of peripheral oxygen saturation, noting that poor peripheral circulation or cold fingers can cause false low readings.
- Airway Clearance: Encouraging hydration to thin mucus secretions unless medically contraindicated.
- Skin Integrity: Inspecting areas where oxygen tubing or masks press against the face and ears every shift to prevent pressure ulcers.
- Accurate Documentation: Recording oxygen flow rates, delivery devices, patient tolerance, and pre- and post-intervention vital signs.