求翻译：但病人2009-4-4 17:39再次出现左心衰，脉搏氧明显降低，给予再次气管插管，呼吸机辅助呼吸。因患者病情危重，反复急性左心功能衰竭，是什么意思？

2009-4-4 17:39 but the patient again left heart failure, decreased oxygen pulse, give again endotracheal intubation, mechanical ventilation. Patients in critical condition due to repeated acute left ventricular failure,

But the patients 2009 - 4 - 4 17:39 emerged once again left of center, the pulse oxygen decline markedly lower trachea intubation, once again, to give breath. due to conditions of patients with acute left of center, the repeated critical functional failure.

But patient 2009-4-4 17:39 appears the left heart to fade once more, the pulse oxygen reduces obviously, gives once more the trachea intubation, the life-support machine assistance breath.Because the patient condition is seriously injured, repeatedly acute left heart function failure,

But patients left heart failure returns 2009-4-4, Pulse Oximeter significantly reduced, again endotracheal intubation, mechanical ventilation to breathe. Patients with critical condition, repeated acute left cardiac failure and

But patients left heart failure returns 2009-4-4, Pulse Oximeter significantly reduced, again endotracheal intubation, mechanical ventilation to breathe. In a critical condition and repeated acute left heart failure,