Abstract: Systems, apparatus, and methods for placing and/or confirming a location of an end of a nasogastric or an orogastric tube within a body cavity are described herein. In some embodiments, an apparatus includes an elongated tube and a position indicator. The elongated tube has a first end, a second end, and defines a lumen. The position indicator is coupled to the elongated tube and disposed sufficiently close to the first end such that, when the first end is properly disposed in the cavity of the patient, the position indicator is disposed in the cavity of the patient. The position indicator is configured to produce an indication perceivable outside of the patient that the position indicator is disposed in the cavity of the patient. The indication is an indication differentiable from a sound naturally generated by the cavity of the patient.