Correction of factor XI deficiency by liver transplantation

Full neurological recovery from severe nonexertional heat stroke with multiple organ dysfunction: A case report

BACKGROUND

We report a rare case of full neurological recovery from severe nonexertional heat stroke in a 67-year-old woman with an initial Glasgow Coma Scale of 3. This report raises awareness among doctors that when heatstroke is diagnosed, comprehensive treatment should be implemented as soon as possible. Moreover, targeted temperature management, combination therapy with hemodialysis and hemoperfusion, and hyperbaric oxygen therapy may alleviate multiorgan failure and prevent neurological sequelae caused by heatstroke.

CASE SUMMARY

A previously healthy 67-year-old woman with an initial Glasgow Coma Scale of 3 was found lying prone on the road at noon on a summer day. Laboratory tests revealed multiorgan failure. As soon as heatstroke was diagnosed, comprehensive treatment was implemented. On hospital Day 3, the patient was extubated. Her initial Sequential Organ Failure Assessment score at hospitalization was 14 and decreased to 2 on hospital Day 4. On the seventh day following hospital admission, as the patient’s general condition improved, the levels of laboratory test findings decreased rapidly. Finally, the patient gradually recovered with no other neurological symptoms (the Glasgow Coma Scale at discharge was 15, and her ability to walk independently was restored).

CONCLUSION

This case demonstrated that targeted temperature management, combination therapy with hemodialysis and hemoperfusion, and hyperbaric oxygen therapy may alleviate multiorgan failure and prevent neurological sequelae caused by heatstroke.

Bidirectional graft-host hematological traffic in liver transplantation

The highly complex immuno-hematological system of the recipient has to rebalance itself when the liver is replaced with a graft that has its own system. This gives us an opportunity for observation. Here we consider the graft-to-recipient direction with passenger lymphocyte syndrome (PLS) as well as the recipient-to-graft direction with Factor VIII (FVIII) inhibitors, paroxysmal nocturnal hemoglobinuria (PNH) and graft endothelial replacement with liver transplantation. PLS extends beyond the ABO blood groups to any situation where the donor has been sensitized to a recipient antigen. PLS directed against ABO or minor blood group antigens is usually self limiting whereas Rhesus (Rh) PLS persists with life threatening immune hemolysis. Human platelet antigen (HPA) 1A PLS results in life threatening immune thrombocytopenia. Treatments of severe PLS may include reduction in immunosuppression, anti-B-cell therapy, plasmapheresis and splenectomy. Liver transplantation into recipients with FVIII inhibitors has been difficult. Donors with acquired hemophilia may transmit the capacity to make FVIII inhibitors by PLS and should be avoided. Patients with PNH have been transplanted successfully but a considerable cost in the continued use of high dose eculizumab. We speculate that combined bone marrow and liver transplantation would be a better option for recipients with FVIII inhibitors or PNH. Replacement of liver graft endothelium with recipient cells is common and may explain relative transplant tolerance that is believed to occur with liver transplantation.

Acquired factor XI deficiency: a rare complication after liver transplantation

BACKGROUND

A majority of coagulation factors are synthesized in the liver. Factor XI (FXI) deficiency (Rosenthal syndrome) is one of the rare inherited coagulation disorders with an extremely low risk of transmission by liver transplantation (LT).

CASE REPORT

We report here the case of a 50-year-old man who unknowingly acquired FXI deficiency by LT. During 1 year of post-transplant follow-up, his activated partial thromboplastin time (aPTT) remained prolonged, but he did not develop bleeding complications. The patient required retransplantation due to chronic rejection and is currently doing well 4 years after his first liver transplantation.

CONCLUSIONS

The presence of a prolonged aPTT in a deceased donor should raise suspicion for the presence of rare coagulation factor deficiencies. During urgent, lifesaving procedures such as LT, it may be impossible to avoid transmission. Awareness of this possibility will allow early detection and management.