When a person stops breathing, they need immediate rescue breaths to survive. However, many people are reluctant to provide mouth-to-mouth rescue breaths due to fear of infections. Blood-borne diseases and respiratory infections can be transmitted during emergency care. Therefore, people needed a reliable way to help victims breathe without exposing themselves to bodily fluids. The bag valve mask, designed in the mid-1950s, provides a means for resuscitation that keeps both patient and rescuers infection-free and supplies precious oxygen. Today, every ambulance and emergency room relies on this infection-safe tool.
But do you know how to use it properly? The device requires different approaches depending on rescuer count, patient age, and specific medical conditions. Keep on scrolling to find out more about this life-saving device!
What Is a Bag Valve Mask?
A bag valve mask is a device that supplies oxygen to patients when they are no longer able to breathe on their own. Healthcare providers and first responders squeeze a self-inflating bag to push air into the patient’s lungs. The mask creates a seal over the nose and mouth. The one-way valve system prevents exhaled air from re-entering the bag. This tool provides critical ventilation support during respiratory emergencies.
What Are The Key Components of the Bag Valve Mask?
The bag-valve-mask device has various important components working in conjunction with each other for effective ventilation. The important components are:
Self-Inflating Bag
The bag automatically refills with air after each compression. You squeeze it to deliver breaths to the patient. Standard adult bags hold 1,000 to 1,600 milliliters of air.
Face Mask
The mask provides a tight seal around the patient’s face. There are different sizes for infants, children, and adults. A well-fitting mask provides effective ventilation without leaks.
One-Way Valve
This valve opens to let air move only towards the patient. This valve ensures that exhaled air, along with other bodily secretions, does not enter the bag. It also protects the rescuer by reducing the risk of contamination.
Oxygen Reservoir
This attachment connects to an oxygen source for enriched air delivery. The reservoir bag fills between compressions automatically.
Oxygen Inlet
This device attaches to the oxygen tube for the delivery of supplemental oxygen and allows it to flow into the system. Most devices operate effectively at 10-15 liters per minute.
When to Use a Bag Valve Mask?
A bag valve mask becomes necessary when patients cannot breathe adequately on their own. Here are the emergencies that require the use of a BVM:
Respiratory Arrest
The patient shows no breathing effort or air movement. This represents the most critical indication for immediate bag mask ventilation. In fact, more than 80 million people are affected by chronic respiratory diseases, and many more are undiagnosed.
Airway Obstruction
Partial obstruction causes severe breathing difficulty despite the patient’s effort. Complete obstruction prevents all air movement, requiring immediate intervention. A bag mask device is used to provide ventilation after obstruction removal.
Apnea During Seizures
Some seizures cause temporary breathing difficulties during or after episodes. The patient may turn blue from oxygen deprivation. The Bag Valve Mask provides ventilation support that continues until normal breathing resumes spontaneously.
Drug Overdose
Opioid and sedative overdoses commonly suppress breathing drive significantly. The patient may breathe only a few times per minute. BVM ventilation maintains oxygenation until medications reverse the overdose effects.
How Does a Bag Valve Mask Work in CPR?
During CPR, the bag valve mask provides oxygen between chest compressions. The combination of compression with ventilation ensures that blood oxygenation levels are maintained. In adult CPR, 30 chest compressions are done, followed by a rescue breath. The advantages of using BVM during CPR are:
- High Level of Oxygen Delivery: The bag-valve-mask with oxygen supplies a concentration of about 100% oxygen, which greatly exceeds the 16% in mouth-to-mouth resuscitation.
- Enhanced Infection Control: The equipment provides a physical barrier to protect both the patient and the rescue personnel from infections that would result from sharing air.
- Reliable Breath Volume Control: The bag-valve-mask device ensures that a consistent, quantifiable breath volume of air follows with every compression, to avoid either inadequate breathing or overinflation of the lungs.
- Enhanced Two-Rescuer Team Coordination: This tool promotes proper teamwork, where one person looks for a seal on the mask, and the other provides controlled breaths.
- Universal Accessibility and Portability: The bag-valve-mask requires no electrical power or complex setup, making it immediately deployable in any emergency setting.
Step-by-Step Method of Using a Bag Valve Mask
The use of a bag valve mask differs slightly between one-person and two-person applications. Follow this evidence-based approach to deliver safe, effective ventilation every time.
Preparing for Ventilation
Before you begin bag mask ventilation, take these preparation steps:
- Position the patient: Place the patient flat on their back. The surface should be firm and stable.
- Select the right mask: Choose a mask that covers the patient’s nose and mouth. The mask should seal completely without covering the eyes. Adult masks don’t work well on pediatric patients.
- Check your equipment: Inspect the bag for cracks or holes. Verify the valve functions properly. Connect oxygen if available.
- Seek help: Seek help as much as possible. The two-way BVM ventilation is far better than breathing with the method that requires only one person.
Opening the Airway
An open airway is essential for effective ventilation. Use these techniques:
- Head tilt-chin lift: Place one hand on the patient’s forehead. Gently tilt the head back. Use your other hand’s fingers and place them underneath the bony part of the chin. Lift the chin upward. This technique opens the airway in most patients.
- Jaw thrust: Use this method if you suspect neck injury. Place your fingers behind the angles of the jaw. Push the jaw forward without moving the neck. This maneuver lifts the tongue away from the back of the throat.
Creating a Proper Mask Seal
Ventilation efficiency depends on the mask seal. Follow these steps:
Single-person technique
- Hold the mask against the patient’s face using the “C-E” technique.
- Form a “C” shape with your thumb and index finger around the mask connector.
- Use your remaining three fingers to form an “E” shape along the jaw.
- Pull the jaw up into the mask while pressing the mask down.
Two-person technique
- The first provider focuses entirely on maintaining the mask seal.
- They use both hands to hold the mask and lift the jaw.
- The second person squeezes the bag.
- This method provides a tight seal and sufficient ventilation.
Delivering Effective Breaths
After you’ve created a seal, your concentration should be on breath delivery:
- Squeeze slowly: Take a second to breathe. Watch for a gentle chest rise. Stop squeezing when you see adequate chest expansion.
- Allow complete exhalation: Release the bag completely. Allow the patient a moment to exhale. The chest should fall back to its resting position.
- Maintain a consistent rate: Count your breaths. Avoid rushing or delivering breaths too frequently. Follow a proper rate of breathing. Here, 10 to 12 breaths per minute can be appropriate for those with a pulse.
- Monitor effectiveness: Look for rises in the chest with each breath. Also, if possible, you can check for breath sounds. Feel for air escaping around the mask. Adjust your technique if ventilation seems inadequate.
What To Check for Proper Function of a Bag Mask System?
Prior to using a BVM, ensure that all of its components are in proper working condition. Here’s what you need to check first:
- Press the bag completely while covering the hole of the mask to look for any leaks.
- Close the mask hole and squeeze the bag to make sure that air passes in only one way.
- Press the mask on your palm with force, using it to make a tight seal.
- Verify that oxygen tubing is attached correctly and that a reservoir bag fills with oxygen in a matter of seconds when oxygen flow begins.
- Make sure that the reservoir bag is adequately attached and fills between compressions.
How Does BVM Accommodate Different Types of Victims?
The bag-valve-mask device needs specialized techniques for different ages and conditions. Here’s how the device adapts to people in different groups:
| Population | Bag Size (mL) | Mask Size | Breath Volume |
| Newborn/Infant | 240-500 | Size 0-1 | 20-30 mL per breath |
| Child (1-8 years) | 500-700 | Size 2-3 | 40-70 mL per breath |
| Adolescent | 700-1000 | Size 4 | 300-400 mL per breath |
| Adult | 1000-1600 | Size 5 | 500-600 mL per breath |
| Pregnant Women | 1000-1600 | Size 5 | 500-600 mL per breath |
| Elderly | 1000-1600 | Size 5 | 400-500 mL per breath |
| Obese Patients | 1000-1600 | Size 5-6 | 600-700 mL per breath |
When Not to Use a Bag Valve?
There are circumstances when using a BVM would be hazardous. Here’s when you should avoid BVM:
- Full Airway Obstruction: Remove obstructions first, as it is not possible for air to be blown past a complete airway obstruction.
- Suspected Basilar Skull Fracture: Positive pressure may introduce air into brain structures; possibly blood in the back of the ears, from the nose.
- Severe Facial Trauma: This can result in a lot of trauma to the face, making it impossible to provide a seal around the mask.
- Tracheostomy Present: Ventilation through a standard mask bypasses it completely. Simply attach it to the surgical site.
- Suspected Pneumothorax: Wait for needle decompression, as a positive pressure environment worsens conditions for collapsed lungs.
- Caustic Ingestion with Oral Burns: Severe burns from caustics inhibit proper closure of the airway and necessitate specialized airway management.
What Should Be Checked After Using a Bag Valve Mask?
After providing bag valve mask ventilation, you must assess the patient’s response and the equipment status. This will help you confirm if your treatment plan has been effective. This is how you should check:
- Verify oxygen saturation with a pulse oximeter to check that it has increased above 90%.
- Look for the chest rising and falling with breathing.
- Evaluate whether the patient’s skin color improves from blue or gray toward a normal pink tone.
- Monitor for signs of returning awareness or responsiveness, indicating better brain oxygenation.
- Palpate the abdomen gently for signs of air accumulation that increases vomiting ris of vomitingk.
Common Bag Valve Mask Challenges and Solutions
Even experienced providers encounter bag valve mask complications during emergencies. Let us take a look at some common challenges with the right solutions:
Inadequate Chest Rise
You squeeze the bag, but the chest doesn’t move. Check these factors:
- Airway Obstruction: Reposition the head. Use the jaw thrust if needed.
- Mask Seal: Adjust your hand position. Apply more pressure around the mask edges.
- Equipment Malfunction: Check for disconnected oxygen tubing. Verify the bag inflates properly.
Gastric Distension
The stomach inflates instead of the lungs. This happens when:
- Excessive Pressure: You’re squeezing too hard. Reduce the force of bag compression.
- Blocked Airway: The patient’s airway isn’t fully open. Reposition the head and neck.
- Rapid Delivery: You’re squeezing too fast. Slow down. Take a full second for each breath.
Air Leak
You hear or feel air escaping. Address these issues:
- Poor Seal: Reposition the mask. Adjust your hand placement. Consider a different mask size.
- Facial Anatomy: Some patients have unusual facial features. Use gauze or tape to improve the seal if appropriate.
- Equipment Problem: Check for cracks in the mask. Replace damaged equipment.
Difficulty Maintaining Oxygen Saturation
The chest rises adequately, but oxygen levels stay low. Address these issues:
- Insufficient Oxygen Flow: Set the flow meter to 10-15 liters per minute.
- Ventilation Rate: Confirm you’re delivering the correct breaths per minute. Monitor the patient’s pulse oximetry.
- Equipment Limitations: Attach an oxygen reservoir to achieve a near 100% concentration.
What Are the Risks of a Bag Valve Mask?
While it has many benefits, using a BVM device can pose certain complications that you should be aware of to avoid. Some of the potential complications and how to avoid them are outlined below:
- Gastric Insufflation: This occurs when excess air enters your stomach due to your squeezing too firmly, which in turn brings about vomiting.
Solution: Only administer a volume sufficient for a visible rise in the chest.
- Barotrauma: The overinflation of delicate lung structures can lead to pneumothorax due to
Solution: Squeeze gently and look for evidence of proper chest rise.
- Aspiration: The patient vomits and then aspirates her stomach contents into her lungs, resulting in severe pneumonia.
Solution: Monitor for gastric distention and position as indicated.
- Airway Trauma: Aggressive manipulation of the jaw and/or a poorly positioned airway mask results in soft tissue injuries.
Solution: Use a gentle technique and proper head positioning throughout ventilation.
- Eye or Facial Pressure Injury: Improper mask placement can compress eyes or facial nerves, causing damage.
Solution: Position the mask correctly, covering only the nose and mouth area.
A Checklist for BVM Maintenance and Storage
Taking good care of your bag-valve-mask device ensures that it functions well when emergencies arise. Here’s a practical step-by-step guide for you to check your device:
| Maintenance Task | Guidelines |
| Cleaning Protocol | Disassemble components after each use Wash with warm, soapy water Rinse and air dry completely |
| Inspection Schedule | Check before each shift weekly Squeeze the bag, verify inflation works Examine for cracks or tears |
| Storage Conditions | Store in a clean dry area Avoid direct sunlight and heat Keep in protective packaging always |
| Replacement Guidelines | Replace per expiration dates Change worn or damaged parts Replace reusable devices every 2-3 years |
Practice Bag Valve Mask Technique to Protect Lives
Emergencies require instant response when a person cannot breathe on their own. Bag-valve-mask devices continue to be the most universal and available devices for ventilation in emergencies. This manual device provides oxygen to the victim and prevents cross-infection among the rescuers. Learn how, when, and where to use this device, common pitfalls to avoid, and potential hazards when using this device for ventilation.
Now, are you prepared to develop these critical skills? With our online BLS, CPR, and first aid courses, you can take your training when you want, where you want, and get a set of skills you can use with confidence in emergencies.
FAQs
1. How should you deliver breath when using a bag-mask device?
Squeeze the bag steadily for a second until you see air entering the lungs. Make it sufficient to cause air to enter the lungs. Breathe out completely between cycles by waiting for the bag to refill.
2. How many breaths are delivered with a bag-mask?
Deliver two breaths after every 30 chest compressions for adults. If they have a pulse but couldn’t breathe on their own, give one breath every five to six seconds, which translates to 10 to 12 breaths per minute. Children require one breath every three to five seconds based on age.
3. What is the best way to deliver bag-mask ventilation?
Use a two-person technique whenever possible for optimal mask seal and ventilation effectiveness. One person with both hands maintains the airway and seal, while the other person compresses the bag. Although it involves both members, it has fewer complications than a solo attempt.
4. How do you provide breaths with a bag-mask device on Quizlet?
Place yourself at the top of the patient, forming a good seal with a C-E grip. Deliver each breath over one second, watching for chest rise with every compression. Maintain a steady rhythm, matching recommended rates for the patient’s age, and give breaths between compressions during CPR.
5. Can you use a bag valve mask on a conscious patient?
Yes, conscious patients with severe respiratory distress may accept and benefit from bag mask ventilation assistance. Explain what you’re doing and ask them to breathe with you during delivery. Many patients find this assistance helpful when they’re working too hard to breathe independently.
