Respiratory diseases, together with infectious complications and hereditary lung diseases, rank third in international mortality statistics. Today, lung transplantation is a recognized method of treating end-stage lung diseases. However, the number of transplant surgeries performed is not much. This is down to the high requirements on the condition of a potential lung donor and directly on the quality of the donor lung. This has significantly limited the number of optimal donors. Rehabilitation of donor lungs to optimal gas exchange indicators can be achieved and objectively assessed in the course of ex vivo lung perfusion (EVLP). The EVLP procedure is widespread in leading transplantation centers in Europe and North America. It allows to significantly expand the pool of donor lungs, thereby serving a greater number of patients in need of lung transplantation. The possibility of EVLP procedure using publicly available perfusion equipment was demonstrated. The optimized protocol fully demonstrated its reliability and efficiency. The developed perfusion solution had no statistically significant differences in comparison with the Steen SolutionTM, which in the future will serve as an alternative for EVLP procedure.
Introduction. Increase in the number of older patients with terminal CHF results in increase in their proportion among potential recipients requiring mechanical circulatory support and/or heart transplantation (HT) [Abecassis M., Bridges N.D. et al., 2012].Aim.To analyze our own experience of HT in recipients of older 60 years.Materials and methods. The study included 63 patients (56 men (93.3% ) and 4 (6.7%) women) aged 60–74 years (63.0 ± 0.8) with body weight of 76.6 ± 1.4 kg, body surface area of 1.7 ± 0.02 m2, and body mass index of 23.4 ± 0.6. Indications for heart transplantation: dilated cardiomyopathy – 24 (38.1%), coronary heart disease – 34 (54.0%), hypertrophic cardiomyopathy – 2 (3.2%), irreversible cardiac graft dysfunction – 3 (4.7%). 46 (73.0%) patients had NYHA functional Class III and 17 (23.0%) patients – Class IV. Transpulmonary pressure gradient was 11.2 ± 2.7 mmHg, pulmonary vascular resistance – 3.5 ± 1.3 Wood units. According to UNOS algorithm 10 (15.9%) patients were listed as Status 1A of urgency of orthotopic cardiac transplantation (VA ECMO, n = 8, and implantable left ventricular assist device, n = 2), 21 (33.3%) patients as Status 1B, and 32 (50.8%) patients as Status 2. Recipients had the following comorbidities: arterial hypertension (n = 51; 81.0%), diabetes mellitus (n = 6; 9.5%), cerebrovascular disease (n = 13; 20.6%), history of stroke (n = 9; 14.3%), dialysisindependent renal dysfunction (n = 21; 33.3%). Before cardiac transplantation 9 (14.2%) recipients underwent various thoracic surgeries, 2 (3.2%) recipients – brain surgery. Heart donors (49 (77.8%) men and 14 (22.2%) women) were aged 18–59 (34.3 ± 10.4) years.Results. ICU hospitalization lasted for 4–15 (8.2 ± 0.5) days. In 61.9% of cases (n = 39) early postoperative and hospital periods were uncomplicated. Early on-table postoperative activation («early» tracheal extubation) was performed in 32 (50.8%) patients in 48 ± 6 minutes after surgery completion. 2 (3.2%) recipients demonstrated early graft dysfunction and required VA ECMO. Complications other than graft dysfunction were in 24 (38.1%) recipients: renal dysfunction (n = 8; 12.7%), renal and hepatic dysfunction (n = 4; 6.3%), infections (bacterial pneumonia, n = 3, [4.8%]), dyscirculatory encephalopathy (n = 9; 14.3%). 12 (19.0%) patients required continuous renal replacement therapy, 10 of them (15.9%) demonstrated renal function recovery. In 2 (3.2%) cases long-term hemodialysis was used. Hospital lethality (n = 6; 9.5%) was due to multiple organ failure syndrome and sepsis.Conclusion.Our own experience demonstrates satisfactory short-term and long-term survival after heart transplantation in recipients of 60 years and older.
According to global health statistics, respiratory diseases, together with infectious complications and hereditary lung diseases, rank as the third leading cause of death. Today, lung transplantation (LTx) is a well-recognized modality of treatment for end-stage chronic lung disease. However, the number of LTx surgeries performed is much lower than other solid organs. This is due to the high requirements for the potential donor and characteristics of the lung graft, reflecting the efficiency of gas exchange function. Non-compliance with the selection criteria leads to deselection of donors, which, according to various estimates, occurs in 80–85% of cases. One of the ways to increase the number of lung transplant surgeries is to restore them to the level of optimal gas exchange parameters, which can be achieved and objectively assessed during normothermic ex vivo lung perfusion (EVLP). EVLP is becoming increasingly common at leading transplantation centers in Europe and North America. This has significantly increased the number of transplant surgeries as a result of using lungs procured from suboptimal donors and rehabilitated via EVLP. In our pilot study, the developed Russian-made mechanical circulatory support system showed that performing normothermic EVLP for isolated lungs under experimental conditions is feasible. Basic and optimized perfusion protocols have fully shown that they are reliable and efficient.
Implantable left ventricular assist devices (LVAD) have become the leading method of mechanical circulatory support (MCS) in heart transplant candidates. But the temporary MCS as a mechanical bridge to heart transplantation (HT) continues to use. The temporary MCS remains an effi ciency method of treatment of life-threatening heart failure (HF), when implantation of permanent LVAD or BiVAD is associated with high risk. The temporary MCS creates clinical and organizational conditions for the urgent HT. This approach allows not only to save life of heart transplant candidates, but also to improve the availability of the HT. The choice of the temporary MCS is determined by the type and severity of HF and the expected duration of its application. The review presents a characteristic, and discusses the effectiveness of various methods of temporary MCS at heart transplant candidates needed in urgent HT.
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