An implantable medical device (IMD) , comprising: electrodes (116, 120-126) configured to be located proximate to an atrial (A) site and a right ventricular (RV) site; memory to store program instructions; one or more processors configured to implement the program instructions to: detect an atrial paced (Ap) event or atrial sensed (As) event; measure an AV interval corresponding to an interval between the Ap event or the As event and a sensed ventricular (Vs) event, the AV interval associated with a current heart rate (HR); and automatically dynamically adjust a first AV delay representing one of a paced AV delay (AVDp) and a sensed AV delay (AVDs) based directly on the measured AV interval, characterized in that the one or more processors are further configured to: identify a scale factor between a base As-Vs interval and a base Ap-Vs interval associated with the current HR; calculate a second AV delay representing the other of the AVDp and AVDs by scaling the first AV delay based on the scale factor; and manage a pacing therapy, utilized by the IMD, based on the AVDp and AVDs. electrodes (116, 120-126) configured to be located proximate to an atrial (A) site and a right ventricular (RV) site; memory to store program instructions; one or more processors configured to implement the program instructions to: detect an atrial paced (Ap) event or atrial sensed (As) event; measure an AV interval corresponding to an interval between the Ap event or the As event and a sensed ventricular (Vs) event, the AV interval associated with a current heart rate (HR); and automatically dynamically adjust a first AV delay representing one of a paced AV delay (AVDp) and a sensed AV delay (AVDs) based directly on the measured AV interval, characterized in that the one or more processors are further configured to: identify a scale factor between a base As-Vs interval and a base Ap-Vs interval associated with the current HR; calculate a second AV delay representing the other of the AVDp and AVDs by scaling the first AV delay based on the scale factor; and manage a pacing therapy, utilized by the IMD, based on the AVDp and AVDs. detect an atrial paced (Ap) event or atrial sensed (As) event; measure an AV interval corresponding to an interval between the Ap event or the As event and a sensed ventricular (Vs) event, the AV interval associated with a current heart rate (HR); and automatically dynamically adjust a first AV delay representing one of a paced AV delay (AVDp) and a sensed AV delay (AVDs) based directly on the measured AV interval, characterized in that the one or more processors are further configured to: identify a scale factor between a base As-Vs interval and a base Ap-Vs interval associated with the current HR; calculate a second AV delay representing the other of the AVDp and AVDs by scaling the first AV delay based on the scale factor; and manage a pacing therapy, utilized by the IMD, based on the AVDp and AVDs. identify a scale factor between a base As-Vs interval and a base Ap-Vs interval associated with the current HR; calculate a second AV delay representing the other of the AVDp and AVDs by scaling the first AV delay based on the scale factor; and manage a pacing therapy, utilized by the IMD, based on the AVDp and AVDs. <EOS>