进食时出冷汗为啥是充血性心力衰竭的迹象和症状呢？

A 3-month-old, 3.5 kg male infant, born full term following a normal spontaneous vaginal delivery and diagnosed with Trisomy 21 and congenital heart disease at birth, is booked for an urgent inguinal hernia repair. He is scheduled forsurgical repair of his atrioventricular septal defect the following week, but unfortunately presented to the ER with a poorly reducible right-sided inguinal hernia.

Medications:  Lasix

Allergies:  NKDA

Past Medical History:  Trisomy 21, Inguinal Hernia

一个3个月大，3.5公斤的男婴，在正常的自然阴道分娩后足月出生，出生时被诊断为21三体和先天性心脏病，被预订进行紧急腹股沟疝修补术。他计划在下周手术修复房室间隔缺损，但不幸的是，他因右侧腹股沟疝复位不良而到急诊室就诊。药物：LaSie     过敏：NKDA  既往病史：21三体，腹股沟疝

Similarly to any patient presenting with an inguinal hernia, this patient needs to be evaluated for NPO status,presence of bowel sounds/obstruction or emesis. In terms of his cardiac status, it is important to review the history,existing imaging studies, current medications and assess the patient for signs and symptoms of congestive heart failure(Failure to thrive, poor feeding, cold sweating with feeding,tachypnea, history of recurrent respiratory infections, etc.) or pulmonary  hypertension  (hepatomegaly,  tachypnea,cyanosis).

与任何表现为腹股沟疝的患者相似，该患者需要评估非手术状态、是否存在肠鸣音/梗阻或呕吐。就他的心脏状况而言，重要的是回顾他的病史、现有的影像学研究、目前的药物治疗，并评估他是否有充血性心力衰竭的迹象和症状(不能茁壮成长、进食不良、进食时出冷汗、呼吸急促、反复呼吸道感染史等)。或肺动脉高压(肝肿大、呼吸急促、发紫)。

进食时出冷汗为啥是充血性心力衰竭的迹象和症状呢？说明交感过于兴奋？