Some embodiments are directed to an apparatus for monitoring patient orientation. A reusable sensor is configured to detect inclination angles of an anterior region of the patient. An elongated disposable attachment device is configured for removable attachment to both the sensor and the patient's anterior region such that the direction of elongation of the attachment device extends along the patient's sternum. The attachment device includes a sensor attachment portion configured for removable attachment to the sensor such that the sensor is prevented from direct contact with the patient, and a patient attachment portion configured for removable attachment to the patient's anterior region.