A system for monitoring a cardiovascular pressure in a patient, the system comprising: an implantable pressure sensing device configured to measure the cardiovascular pressure of the patient; posture sensing circuitry configured to sense patient posture; memory circuitry configured to store, in association with each of a plurality of different postures, a respective offset value for the cardiovascular pressure of the patient; processing circuitry configured to: determine each of the offset values based on at least one of: one or more distances between an implantable pressure sensing device and one or more anatomical structures of the patient; a location of the implantable pressure sensing device; or one or more dimensions of the one or more anatomical structures of the patient; and said processing circuitry further configured to: determine a measured value of the cardiovascular pressure and a posture of the patient sensed by the posture sensing circuitry when the value of the cardiovascular pressure was measured; select one of the stored offset values associated with the current patient posture; and determine an adjusted cardiovascular pressure value based on the selected offset value and the measured cardiovascular pressure value. an implantable pressure sensing device configured to measure the cardiovascular pressure of the patient; posture sensing circuitry configured to sense patient posture; memory circuitry configured to store, in association with each of a plurality of different postures, a respective offset value for the cardiovascular pressure of the patient; processing circuitry configured to: determine each of the offset values based on at least one of: one or more distances between an implantable pressure sensing device and one or more anatomical structures of the patient; a location of the implantable pressure sensing device; or one or more dimensions of the one or more anatomical structures of the patient; and said processing circuitry further configured to: determine a measured value of the cardiovascular pressure and a posture of the patient sensed by the posture sensing circuitry when the value of the cardiovascular pressure was measured; select one of the stored offset values associated with the current patient posture; and determine an adjusted cardiovascular pressure value based on the selected offset value and the measured cardiovascular pressure value. determine each of the offset values based on at least one of: one or more distances between an implantable pressure sensing device and one or more anatomical structures of the patient; a location of the implantable pressure sensing device; or one or more dimensions of the one or more anatomical structures of the patient; and one or more distances between an implantable pressure sensing device and one or more anatomical structures of the patient; a location of the implantable pressure sensing device; or one or more dimensions of the one or more anatomical structures of the patient; and said processing circuitry further configured to: determine a measured value of the cardiovascular pressure and a posture of the patient sensed by the posture sensing circuitry when the value of the cardiovascular pressure was measured; select one of the stored offset values associated with the current patient posture; and determine an adjusted cardiovascular pressure value based on the selected offset value and the measured cardiovascular pressure value. determine a measured value of the cardiovascular pressure and a posture of the patient sensed by the posture sensing circuitry when the value of the cardiovascular pressure was measured; select one of the stored offset values associated with the current patient posture; and determine an adjusted cardiovascular pressure value based on the selected offset value and the measured cardiovascular pressure value.