While on non-invasive ventilator, nurse noticed pt was struggling to breathe.Respiratory therapist came to room.Two alarms were seen: "inline pressure low" and "proximal pressure low." pt's oxygenation level dropped into the 40s.Pt was placed on a non-rebreather mask.Corrections were double checked but nothing appeared wrong with equipment.New equipment obtained.Pt did experience chest pain and his telemetry monitoring showed st depression.He needed one dose of nitroglycerin.He returned to baseline functioning.
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