A surgical probe and methods for targeted treatment of structures of the heart with heat and radiofrequency energy. The probe which is designed to operated by hand has a elongate member with a handle and an energy-delivering member in an adjustable loop configuration. The control placed on the handle allow the user to alter the length of the loop configuration of the energy-delivering member and to thus place energy-delivering elements located on the energy-delivering member at selected or targeted portions of the heart or structures within the heart. The elongate member is conformable and can be bent into different configurations to allow additional targeted treatment of the particular portions of the heart.