Final answer:
The condition indicated by a probing hard stop where saline did not reach the throat and regurgitation is positive is esophageal obstruction.
Step-by-step explanation:
If during probing hard stop, saline did not reach the throat and regurgitation is positive, the condition indicated is most likely esophageal obstruction. Esophageal obstruction is a blockage in the esophagus, the muscular tube that connects the pharynx to the stomach. When an obstruction occurs, swallowed material can't pass into the stomach and may be regurgitated back into the mouth or expelled through the nose. Unlike airway obstruction, which typically induces coughing as food enters the trachea, esophageal obstruction doesn't affect the airways directly but impedes the normal passage of food and liquids.