What is the correct pathway of the oxygen that we breath in?

What is the correct pathway of the oxygen that we breath in?

The oxygen you breathe in goes into your lungs and passes into your blood from there. It is then transported to all the cells in your body through your bloodstream. The lungs are located in the chest region, protected by the ribs in the rib cage.

What is the correct order in which oxygen enters the body?

Oxygen enters the lungs, then passes through the alveoli and into the blood. The oxygen is carried around the body in blood vessels. Carbon dioxide moves into the blood capillaries and is brought to the lungs to be released into the air during exhalation.

What is the correct order of the parts of the respiratory system?

What makes up the respiratory system?

  • Nose.
  • Mouth.
  • Throat (pharynx)
  • Voice box (larynx)
  • Windpipe (trachea)
  • Airways (bronchi)
  • Lungs.

What is the pathway of oxygen from the lungs into the body tissues?

In a process called diffusion, oxygen moves from the alveoli to the blood through the capillaries (tiny blood vessels) lining the alveolar walls. Once in the bloodstream, oxygen gets picked up by the hemoglobin in red blood cells.

How is oxygen delivery calculated?

Oxygen Delivery Equation (DO2)

  1. Cardiac output (CO): This is the product of heart rate (HR) and stroke volume (SV), or the volume of blood ejected with each beat.
  2. Arterial oxygen content (CaO2): The sum of (1.34 x [Hb] x SpO2) and (0.003 x PaO2), the latter of which normally contributes very little to the overall CaO2 due to the 0.003 multiplier.

What is normal oxygen delivery?

Global oxygen delivery describes the amount of oxygen delivered to the tissues in each minute and is a product of the cardiac output and arterial oxygen content. With a resting cardiac output of 5 litre min−1 (and using the same figures as before), a ‘normal’ adult male has an oxygen delivery of 997.5 ml min−1.

What is normal oxygen content?

Normal arterial oxygen is approximately 75 to 100 millimeters of mercury (mm Hg). Values under 60 mm Hg usually indicate the need for supplemental oxygen. Normal pulse oximeter readings usually range from 95 to 100 percent. Values under 90 percent are considered low.

What percentage of oxygen is delivered through a nasal cannula?


What is considered high flow oxygen?

High flow oxygen therapy (HFOT) Traditional oxygen therapy is up to 16 L/min and high flow oxygen therapy is up to 60 L/min. 1. High flow oxygen therapy is usually delivered using a blender connected to a wall outlet, a humidifier, heated tubing and nasal cannula.

What percentage is 15L of oxygen?

YELLOW = 8-10L/min = 35% O2. RED = 10-12L/min = 40% O2. GREEN = 12-15L/min = 60% O2.

Which oxygen mask provides the highest concentration of oxygen?

Venturi mask

At what flow rate should oxygen be humidified?

1-4 l/min

What are the methods of oxygen administration?

Low flow delivery method

  • Simple face mask.
  • Non re-breather face mask (mask with oxygen reservoir bag and one-way valves which aims to prevent/reduce room air entrainment)
  • Nasal prongs (low flow)
  • Tracheostomy mask.
  • Tracheostomy HME connector.
  • Isolette – neonates (usually for use in the Neonatal Intensive Care Unit only)

What is the maximum flow rate for an oxygen concentrator?

10 liters per minute

What is the difference between low flow and high flow oxygen?

Low-flow systems provide oxygen at flow rates that are lower than patients’ inspiratory demands; thus, when the total ventilation exceeds the capacity of the oxygen reservoir, room air is entrained. Thus, if the ventilatory demand of the patient is met completely by the system, then it is a high-flow system.

Why is high flow oxygen used?

High-flow oxygen via nasal cannula rapidly alleviates symptoms of ARF and improves oxygenation by several mechanisms, including dead space washout, reduction in oxygen dilution and inspiratory nasopharyngeal resistance, a moderate positive airway pressure effect that may generate alveolar recruitment and an overall …

Can you use high flow oxygen at home?

High-flow nasal cannula is a newer means of home oxygen delivery and use in the home setting is still evolving. It has been used for obstructive sleep apnea (OSA) and laryngotracheomalacia. Both the interface (cannula) and humidification system differ from low-flow nasal cannula.

What percentage is high flow oxygen?


Is a ventilator a high flow oxygen device?

Currently, most ICU ventilators offer an option enabling high-flow oxygen therapy, but they need to be connected to the heated humidifier and circuit described above.

What are the contraindications for BiPAP?


  • Uncooperative or extremely anxious patient.
  • Reduced consciousness and inability to protect their airway.
  • Unstable cardiorespiratory status or respiratory arrest.
  • Trauma or burns involving the face.
  • Facial, esophageal, or gastric surgery.
  • Air leak syndrome (pneumothorax with bronchopleural fistula)

What is FiO2 on ventilator?

FiO2: Percentage of oxygen in the air mixture that is delivered to the patient. Flow: Speed in liters per minute at which the ventilator delivers breaths.

What is the maximum flow rate for a nasal cannula quizlet?

The flow for the nasal cannula is 1 to 6 liters per minute. Higher flow rates are uncomfortable for the patient and will dry out the mucous membranes.