A flushing system configured to flush the pericardial cavity of a patient, wherein the system comprises: - an infusion liquid outlet to connect a first tube having an infusion liquid lumen to guide a flow of infusion liquid from the system to the pericardial cavity, and - an effusion liquid inlet to connect to a second tube having an effusion liquid lumen to guide the effusion liquid flow from the pericardial cavity to the system - a flow rate control system to control the flow rate of the infusion liquid flow at the infusion liquid outlet on the basis of multiple sensor signals, wherein the flow rate control system comprises: - a control unit to provide a control signal on the basis of the sensor signals, and - a pump device to pump infusion liquid to the infusion liquid outlet at an infusion liquid flow rate, wherein the infusion liquid flow rate is adjustable by the control signal of the control unit - and wherein the sensor signals registered by the control unit comprise - an infusion liquid signal representative for the infusion liquid flow to the pericardial cavity, - an effusion liquid signal representative for the effusion liquid flow rate from the pericardial cavity, - a blood volume signal generated by a hematocrit sensor representative for a blood loss flow rate in the effusion liquid from the pericardial cavity, and - a pressure control signal representative for the pressure in the pericardial cavity generated by a pressure sensor positioned inside or in connection with the first tube, the second tube or the pericardial cavity. - an infusion liquid outlet to connect a first tube having an infusion liquid lumen to guide a flow of infusion liquid from the system to the pericardial cavity, and - an effusion liquid inlet to connect to a second tube having an effusion liquid lumen to guide the effusion liquid flow from the pericardial cavity to the system - a flow rate control system to control the flow rate of the infusion liquid flow at the infusion liquid outlet on the basis of multiple sensor signals, wherein the flow rate control system comprises: - a control unit to provide a control signal on the basis of the sensor signals, and - a pump device to pump infusion liquid to the infusion liquid outlet at an infusion liquid flow rate, wherein the infusion liquid flow rate is adjustable by the control signal of the control unit - a control unit to provide a control signal on the basis of the sensor signals, and - a pump device to pump infusion liquid to the infusion liquid outlet at an infusion liquid flow rate, wherein the infusion liquid flow rate is adjustable by the control signal of the control unit - and wherein the sensor signals registered by the control unit comprise - an infusion liquid signal representative for the infusion liquid flow to the pericardial cavity, - an effusion liquid signal representative for the effusion liquid flow rate from the pericardial cavity, - a blood volume signal generated by a hematocrit sensor representative for a blood loss flow rate in the effusion liquid from the pericardial cavity, and - a pressure control signal representative for the pressure in the pericardial cavity generated by a pressure sensor positioned inside or in connection with the first tube, the second tube or the pericardial cavity. - an infusion liquid signal representative for the infusion liquid flow to the pericardial cavity, - an effusion liquid signal representative for the effusion liquid flow rate from the pericardial cavity, - a blood volume signal generated by a hematocrit sensor representative for a blood loss flow rate in the effusion liquid from the pericardial cavity, and - a pressure control signal representative for the pressure in the pericardial cavity generated by a pressure sensor positioned inside or in connection with the first tube, the second tube or the pericardial cavity.