Final answer:
The preferred method of ventilation for a patient who cannot breathe on their own is the two-person bag-valve-mask, which is highly effective and allows for optimal oxygen delivery to the patient. correct answer is A) Two-person bag-valve-mask .
Step-by-step explanation:
The preferred method of ventilation in the field for a patient who is not able to breathe on his own is A. Two-person bag-valve-mask.
When a patient cannot breathe independently, the immediate priority is ensuring they receive sufficient oxygen. The two-person bag-valve-mask (BVM) method is considered the gold standard in pre-hospital emergency care because it allows for effective ventilation and oxygenation. While mouth-to-mouth methods or even a one-person BVM can sometimes be used, they are less efficient and have higher risks of inadequate ventilation or disease transmission. The two-person BVM method involves one rescuer securing the mask on the patient's face to ensure a tight seal while the other squeezes the bag to deliver breaths. Proper technique reduces the risk of stomach inflation and ensures optimal oxygen delivery to the patient's lungs. This method is essential when dealing with cases such as respiratory arrest, severe respiratory distress, or when the patient’s airway is protected with an advanced airway like an endotracheal tube or supraglottic airway.