Oxygen Delivery Flashcards
Sem 1
What is the purpose of oxygen therapy?
Oxygen therapy is indicated for patients with hypoxemia, respiratory distress, or conditions that impair oxygenation.
What are common conditions requiring oxygen therapy?
Common conditions include chronic obstructive pulmonary disease (COPD), pneumonia, and acute respiratory distress syndrome (ARDS).
What is atelectasis?
Atelectasis is a condition where the air sacs in the lungs collapse, leading to difficulty in breathing.
What can cause the formation of free radicals?
Free radicals are created when unpaired atoms tear through cells and tissues.
What is the ideal SpO2 level for oxygen therapy?
The ideal optimal level is 92-96% SpO2 unless specified in standards.
What are the indications for using high concentration oxygen?
High concentration oxygen is indicated for confirmed or suspected carbon monoxide, cyanide toxicity, or noxious gas exposure.
What are the types of oxygen delivery devices?
Types include non-rebreather masks, simple face masks, and nasal cannula.
What is the flow rate and oxygen concentration of non-rebreather masks?
Non-rebreather masks provide 80-95% oxygen at flow rates of 10-15 LPM.
What is the flow rate and oxygen concentration of simple face masks?
Simple face masks deliver 40-60% oxygen at 8-10 LPM.
What is the flow rate and oxygen concentration of nasal cannula?
Nasal cannula deliver 24-44% oxygen at 1-6 LPM.
What is the importance of humidified oxygen therapy?
Humidified oxygen is essential for patients requiring high-flow oxygen for extended periods to prevent drying of mucous membranes.
What are the components of an oxygen tank?
Key components include the tank itself, regulator, and flow meter.
What is the safe residual pressure for oxygen tanks?
Change at 500 psi for safe residual pressure.
What is the function of a regulator on an oxygen tank?
The regulator controls the flow rate of oxygen delivered to the patient.
What are oropharyngeal airways used for?
Oropharyngeal airways are used to maintain airway patency in unconscious patients.
What are nasopharyngeal airways suitable for?
Nasopharyngeal airways are suitable for conscious patients and can be used in cases of facial trauma.
What is the purpose of suctioning in airway management?
Suctioning is critical for clearing the airway and should be limited to 10 seconds.
What are the suctioning limits for infants and children?
Infants should not exceed 100 mmHg, and children should not exceed 200 mmHg.
What is the maximum suction time recommended?
Suctioning should not exceed 10 seconds at a time.
What is the ideal SpO2 range for a patient with COPD?
The ideal SpO2 range for COPD patients is 88-92% to avoid suppressing their respiratory drive.
What oxygen delivery device is most commonly used for patients with severe respiratory distress, such as trauma or cardiac arrest?
The non-rebreather mask (NRB) is used for high-concentration oxygen delivery (80-95%) at a flow rate of 10-15 LPM.
Why is administering high concentrations of oxygen to COPD patients risky?
High concentrations of oxygen can suppress the respiratory drive in COPD patients, leading to hypoventilation or respiratory failure.
What is the primary concern when administering oxygen to patients with facial trauma and soot around their mouth and nose?
The primary concern is potential smoke inhalation or carbon monoxide poisoning, so high concentrations of oxygen (100%) are necessary.
What should be the first action when you encounter a patient with respiratory distress and a history of COPD?
Start with 2 L per minute of oxygen via nasal cannula, which is aligned with their usual home oxygen therapy. Reassess if their condition does not improve.
When would you use humidified oxygen therapy?
Humidified oxygen is used when delivering high-flow oxygen for extended periods, especially in conditions like hypothermia, drowning, pediatric cardiac arrest, and chronic shortness of breath.
What is the key benefit of using a non-rebreather mask (NRB) in patients with severe trauma or carbon monoxide poisoning?
The NRB provides the highest concentration of oxygen (80-95%) and is crucial for patients who need immediate high-flow oxygen.
What is the flow rate for a simple face mask and the oxygen concentration it delivers?
A simple face mask delivers 40-60% oxygen at a flow rate of 8-10 LPM.
How do you manage oxygen tank pressure for safety?
Oxygen tanks should be replaced when the pressure gauge drops to around 500 PSI to ensure enough oxygen for the patient.
What oxygen delivery device is best suited for chronic oxygen-dependent patients, such as those with COPD?
The nasal cannula is the best option, as it provides 1-6 L/min of oxygen (24-44%), which is gentle and comfortable for long-term use.
What is the ideal oxygen concentration for a patient with carbon monoxide poisoning?
A 100% oxygen concentration is essential to treat carbon monoxide poisoning as it helps displace carbon monoxide from hemoglobin.
Why is it important to monitor a COPD patient’s SpO2 during oxygen therapy?
It’s important because too much oxygen can suppress their respiratory drive, so SpO2 should be kept between 88-92% for safety.
What is atelectasis, and how does oxygen therapy contribute to it?
Atelectasis is the collapse of alveolar sacs in the lungs. High concentrations of oxygen can reduce nitrogen levels, which can cause the sacs to collapse and impair oxygen exchange.
What is the key safety feature of an oxygen tank regulator?
The pin-index safety system ensures that only the correct regulator is attached to the oxygen tank, preventing incorrect connections.
What should be your primary concern when a pulse oximeter is not functioning?
Administer high-concentration oxygen to all patients, especially those with critical findings or hypotension.
