TL;DR

Bag-Valve-Mask (BVM) Ventilation: Manual ventilation delivering 100% O2. Proper seal and tidal volume (visible chest rise).

By Valenke Exam Prep Team·Last updated 2026-06-02

Bag-Valve-Mask (BVM) Ventilation

NREMT EMT NREMT PARAMEDIC

Definition

Manual ventilation delivering 100% O2. Proper seal and tidal volume (visible chest rise).

Step-by-Step Procedure

Protocol steps for bag-valve-mask (bvm) ventilation:

Sepsis recognition: qSOFA of 2 or more (altered mentation, RR 22+, SBP 100 or less) then IV fluids 20 mL/kg then early antibiotics if ALS

Troubleshooting

Troubleshooting bag-valve-mask (bvm) ventilation in the field:

King airway: If supraglottic blind-insertion airway device fails, verify connections, check battery, try alternate equipment. Available sizes: Size 3 (4-5 ft), Size 4 (5-6 ft), Size 5 (over 6 ft)
AED: If automated external defibrillator for vf/pvt fails, verify connections, check battery, try alternate equipment. Available sizes: Adult pads (over 8yo or 25kg), Pediatric pads (under 8yo or 25kg)
IO drill: If intraosseous access device for emergent vascular access fails, verify connections, check battery, try alternate equipment. Available sizes: EZ-IO: 15mm (peds), 25mm (adult), 45mm (obese)

Key Values & Ranges

Key values and ranges relevant to bag-valve-mask (bvm) ventilation in prehospital care:

Parameter	Adult	Pediatric
ETCO2	35-45 mmHg	35-45 mmHg
blood pressure	90/60-120/80 mmHg	70+(2*age) systolic minimum
respiratory rate	12-20 breaths/min	25-50 (infant), 15-30 (child)
temperature	97.8-99.1 F (36.5-37.3 C)	same range, rectal preferred under 2yo
SpO2	95-100%	95-100%

Safety Considerations

Field safety for bag-valve-mask (bvm) ventilation includes scene assessment before patient contact. Ensure BSI (body substance isolation) precautions are in place. PPE selection depends on the mechanism and suspected pathogens. Gloves are the minimum; add mask and eye protection for splash risk, N95 for airborne pathogens.

Never approach a scene involving hazardous materials, violence, or structural instability without proper resources and clearance from incident command.

Why It Matters

BVM technique and ventilation rate tested on EMT exam.

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Frequently Asked Questions

What assessment tools help evaluate bag-valve-mask (bvm) ventilation?▼

For bag-valve-mask (bvm) ventilation: SAMPLE: evaluates Signs/symptoms, Allergies, Medications, Past history, Last intake, Events; scoring is Mnemonic for patient history gathering. Cincinnati Stroke Scale: evaluates Facial droop, Arm drift, Speech abnormality; scoring is Any 1 positive = 72% probability of stroke.

What vital signs should be monitored when assessing bag-valve-mask (bvm) ventilation?▼

For bag-valve-mask (bvm) ventilation: temperature: 97.8-99.1 F (36.5-37.3 C). heart rate: 60-100 bpm. blood glucose: 70-140 mg/dL. Reassess every 5 minutes for unstable patients.

What protocol applies to bag-valve-mask (bvm) ventilation in prehospital care?▼

For bag-valve-mask (bvm) ventilation: Sepsis recognition: qSOFA of 2 or more (altered mentation, RR 22+, SBP 100 or less) then IV fluids 20 mL/kg then early antibiotics if ALS