The right answer is B. Begin chest compressions.
Chest compression is a first aid gesture that occurs under two circumstances:
** the victim is conscious and chokes (total obstruction of the upper airways) but can not practice Heimlich's method (example of a pregnant woman or an obese person, or an infant on which the method Mofenson failed, or an unconscious victim for whom the insufflations do not pass); the purpose here is to cause an overpressure in the lungs to dislodge the foreign body;
** the victim is unconscious, does not breathe and his heart is no longer beating, the chest compressions are used here to circulate the blood; alternating thirty chest compressions and two breaths (mouth-to-mouth); all artificial ventilation / cardiac massage is called cardiopulmonary resuscitation (CPR).
One important concept to know that was not mentioned in the question or in the propositions is that there has to be a cardiopulmonary arrest to start the chest compression because there is we may have an unconscious victim who does not respond but breathes!
Answer:
Blood gasses are normal. Agonal breathing is characterized by slow, very shallow irregular respirations that result from anoxic brain injury. This will often progress to apnea depending on the underlying cause. Apnea is the absence of breathing.
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A Vitrectomy is the removal of the vitreous fluid of the posterior chamber of the eye and replacing it with a clear solution. This is often done in the posterior chamber because the vitreous humor sometimes get tangled with other major parts of the eye.
