pad for an operating table which is configured to minimize injury during a cardiac operation; pad for an operating table which is configured to provide a substantial air flow about a portion of a patient's body which is in contact with the pad; open cell foam pad, namely, foam positioning pads for medical use; open cell foam pad for an operating table which is configured to minimize injury during a cardiac operation; open cell viscoelastic foam pad, namely, foam positioning pads for medical use; open cell viscoelastic foam pad for an operating table which is configured to minimize injury during a cardiac operation; viscoelastic pad, namely, foam positioning pads for medical use; viscoelastic pad for an operating table which is configured to minimize injury during a cardiac operation; memory pad, namely, foam positioning pads for medical use; memory pad for an operating table which is configured to minimize injury during a cardiac operation; pad for an operating table to assist in maintaining patients in a position on an operating table; pad for an operating table which is inclinable both lengthwise and sideways simultaneously to assist in maintaining patients in a position on an operating table; pad, for an operating table, being able to hold a patient on the operating table and to assist in maintaining patients in a position on an operating table; pad for an operating table which is inclinable both lengthwise and sideways to assist in maintaining patients in a Trendelenburg position; pad, for an operating table, being able to hold a patient on the operating table, which operating table inclines both lengthwise and sideways, and being able to assist in maintaining patients in a Trendelenburg position; pad, for an operating table, being able to hold a patient on the operating table, which operating table inclines both lengthwise and sideways simultaneously, and being able to assist in maintaining patients in a Trendelenburg position