某人在经过长途飞行后,当飞机降落在归途机场时,突然感到胸闷、气短、呼吸困难,随即倒地,经抢救无效死亡。这些患者均死于肺栓塞,与长途飞行有关,此病被称为“经济舱综合征”(Econo-m y ClassSyndrom e,ECS)。1.什么是E C S1997年Sym ington等人首次报道一例乘坐经济舱长途飞行 After a long flight, a person suddenly felt chest tightness, shortness of breath, difficulty breathing and then fell to the ground when the plane landed at the airport where she died. These patients all died of pulmonary embolism and were associated with long flights, known as the Econo- my Class Syndrom (ECS). 1. What is the E C S Sym ington et al 1997 first reported a case of long-haul flights