Which maneuver generally is not performed early before chest compression in basic life suppo outside the hospital?
**Core Concept**
In basic life support (BLS) outside the hospital, chest compressions are a crucial component of cardiopulmonary resuscitation (CPR). The sequence of maneuvers during CPR is critical to ensure effective resuscitation. The correct technique involves a specific order of actions to maximize the chances of successful resuscitation.
**Why the Correct Answer is Right**
The correct answer is not related to the sequence of maneuvers during CPR. Before starting chest compressions, the first step is to call for help and assess the airway, breathing, and circulation (ABCs) of the patient. After verifying the patient is unresponsive and not breathing, the next step is to open the airway using the head-tilt-chin-lift (HTCL) maneuver. This is essential to ensure a clear airway and facilitate effective ventilation. The HTCL maneuver is typically performed before starting chest compressions.
**Why Each Wrong Option is Incorrect**
**Option A:** The sequence of maneuvers during CPR does not involve the use of a bag-valve-mask (BVM) device before chest compressions. While a BVM device is used for ventilation during CPR, it is not performed early before chest compressions.
**Option B:** The head-tilt-chin-lift (HTCL) maneuver is performed before chest compressions to open the airway, making it the correct answer.
**Option C:** The use of a defibrillator is not a maneuver performed before chest compressions in basic life support outside the hospital.
**Option D:** The sequence of maneuvers during CPR does not involve the use of a pulse oximeter before chest compressions.
**Clinical Pearl / High-Yield Fact**
In BLS, it's essential to remember the sequence of maneuvers: Call for help, assess ABCs, open the airway with HTCL, and then start chest compressions. This sequence ensures effective resuscitation and maximizes the chances of successful cardiac arrest management.
**Correct Answer:** B. Head-tilt-chin-lift (HTCL) maneuver.