The objectives of this trial are to determine whether, in critically ill ESKD patients randomization to fluid removal guided by lung and inferior vena cava ultrasound, compared to standard care, leads to Improved pulmonary congestion (primary outcome); and safety (secondary outcome) in the short-term.

The point-of-care ultrasound was thought useful in the management of fluid in critically ill patients. At present, the role of the lung and inferior vena cava ultrasound is unclear in the management of decongestion of heart failure in kidney failure (KF) patients using prolonged hemodialysis. The investigators aim to explore the effect of pre-dialysis probing with the lung and inferior vena cava to guide fluid removal as compared with conventional protocols on the improvement of heart failure symptoms in patients with KF with heart failure under prolonged hemodialysis in the short-term.

Inclusion Criteria:

1. patients meet the diagnostic criteria for end-stage renal disease;
2. indications that the patient may be experiencing signs and/or symptoms of heart failure, and based on the serum N-terminal pro-brain natriuretic peptide level of greater than 11,215. 2 ng/L;
3. patients may require prolonged intermittent renal replacement therapy due to volume overload;
4. patients ≥18 yo and ≤80 yo;
5. either the patient or a family member signs the informed consent;
6. patients will undergo at least two sessions of prolonged hemodialysis.

Exclusion Criteria:

1. history of malignancy or psychiatric disease;
2. patients with a history of congenital heart disease or hypertrophic cardiomyopathy;
3. coagulation abnormalities, intracranial, visceral or gastrointestinal bleeding in the past 3 months, or contraindications to heparin anticoagulation;
4. The duration of prolonged hemodialysis <8 hours;
5. Ultrasound unable to monitor the inferior vena cava, or can't access the date;
6. Pregnancy;
7. Patients with severe respiratory failure;
8. Patients with combined severe infections, such as patients with sepsis;
9. Presence of pre-dialysis hypotension: systolic blood pressure <90 mmHg;
10. other conditions deemed ineligible by physicians.