A patient, 60, suffering from arterial hypertension for 20 years, had a sudden attack of dyspnea after a stressful situation. On PE: orthopnea position, Ps - 120 per min., BP 210/120 mm Hg, I heart sound weakened, an additional sound in the diastole, RR - 32 / min. Breath sounds over the lower lobes were diminished with single bubbling rales. Which complication did the patient develop?
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