A ventilation monitoring system, comprising: a capnography sensor configured to provide information representative of a breath of a subject; and at least one processor in communication with the capnography sensor, the at least one processor configured to: receive and process signals from the capnography sensor representative of the subject's breath while an endotracheal tube is positioned in a trachea of the subject, monitor the received and processed signals to identify one or more indications of the subject's breath; and provide a prompt for a user to inspect the endotracheal tube to determine if the endotracheal tube has become dislodged based on the identified one or more indications of the subject's breath; characterized by further comprising at least one accelerometer (285, 287) in communication with the at least one processor configured to detect movement of the at least one endotracheal tube, the capnography sensor, or the subject; and in that the at least one processor is further configured to receive and process signals from the at least one accelerometer (285, 287); determine a value representative of movement of the endotracheal tube, the capnography sensor, or the subject based on the received and processed signals from the at least one accelerometer (285, 287); and provide the prompt for the user to inspect the endotracheal tube when the determined value representative of movement is greater than a predetermined threshold value. a capnography sensor configured to provide information representative of a breath of a subject; and at least one processor in communication with the capnography sensor, the at least one processor configured to: receive and process signals from the capnography sensor representative of the subject's breath while an endotracheal tube is positioned in a trachea of the subject, monitor the received and processed signals to identify one or more indications of the subject's breath; and provide a prompt for a user to inspect the endotracheal tube to determine if the endotracheal tube has become dislodged based on the identified one or more indications of the subject's breath; characterized by further comprising at least one accelerometer (285, 287) in communication with the at least one processor configured to detect movement of the at least one endotracheal tube, the capnography sensor, or the subject; and in that the at least one processor is further configured to receive and process signals from the at least one accelerometer (285, 287); determine a value representative of movement of the endotracheal tube, the capnography sensor, or the subject based on the received and processed signals from the at least one accelerometer (285, 287); and provide the prompt for the user to inspect the endotracheal tube when the determined value representative of movement is greater than a predetermined threshold value. receive and process signals from the capnography sensor representative of the subject's breath while an endotracheal tube is positioned in a trachea of the subject, monitor the received and processed signals to identify one or more indications of the subject's breath; and provide a prompt for a user to inspect the endotracheal tube to determine if the endotracheal tube has become dislodged based on the identified one or more indications of the subject's breath; characterized by further comprising at least one accelerometer (285, 287) in communication with the at least one processor configured to detect movement of the at least one endotracheal tube, the capnography sensor, or the subject; and in that the at least one processor is further configured to receive and process signals from the at least one accelerometer (285, 287); determine a value representative of movement of the endotracheal tube, the capnography sensor, or the subject based on the received and processed signals from the at least one accelerometer (285, 287); and provide the prompt for the user to inspect the endotracheal tube when the determined value representative of movement is greater than a predetermined threshold value.