1/119. Anti-s antibody-associated delayed hemolytic transfusion reaction in patients with sickle cell anemia.PURPOSE: signs and symptoms of delayed hemolytic transfusion reaction (DHTR) may resemble those of vaso-occlusive crises in patients with sickle cell anemia (SCA). The diagnosis of DHTR therefore presents a challenge to the clinician when treating such patients. The current study describes a patient with SCA and DHTR secondary to red cell anti-s antibody, manifesting as painful extremeties, severe hemolytic anemia, and acute oliguric renal failure. patients AND methods: A 17-year-old patient with homozygous hemoglobin S presented 8 days after partial exchange transfusions with severe anemia and signs and symptoms resembling vaso-occlusive crisis. Clinical course was complicated by intravascular hemolysis and acute renal failure. RESULTS: Anti-s antibody was detected in the eluate. diagnosis of DHTR was made. Treatment included single volume whole blood exchange transfusion and continuous veno-venous hemofiltration with dialysis. CONCLUSIONS: The possibility of DHTR should be considered in a patient with SCA with hemolytic anemia. Acute renal failure is a rare complication of anti-s antibody-associated DHTR. Such reactions can be successfully managed with exchange transfusion and continuous hemofiltration with dialysis.- - - - - - - - - - ranking = 1keywords = intravascular (Clic here for more details about this article) |
2/119. Does coagulation have a causative role in eclampsia?Alternations in the coagulation mechanism were looked for in a population of eclamptic women, most of when were young, nulliparous, and without evidence of chronic vascular disease, and all of whom survived. thrombocytopenia was identified in 29% of these women. A prolonged plasma thrombin time was demonstrated in 51% yet elevated fibrinogen-fibrin degradation products in serum were uncommon, as was fibrin monomer in plasma. Overt microangiopathic hemolysis was rare. It is concluded that disseminated intravascular coagulation, when it does occur in eclampsia, is the consequence of the disease rather than the cause. Moreover, endothelial damage, rather contents, probably initiates the thrombocytopenia and other coagulation changes.- - - - - - - - - - ranking = 1.3610203476266keywords = intravascular, intravascular coagulation, coagulation (Clic here for more details about this article) |
3/119. hemosiderin deposition on the renal cortex by mechanical hemolysis due to malfunctioning prosthetic cardiac valve: report of MR findings in two cases.We present two cases of mechanical hemolysis due to malfunctioning prosthetic cardiac valves in which MRI was characteristic. The signal intensity of the renal cortex was much lower than that of the medulla on T2-weighted images due to deposition of hemosiderin in proximal convoluted tubules by intravascular hemolysis. These MR findings are identical to those in paroxysmal nocturnal hemoglobinuria.- - - - - - - - - - ranking = 1keywords = intravascular (Clic here for more details about this article) |
4/119. Intravascular hemolysis in aluminium phosphide poisoning.Intravascular hemolysis is most often secondary to exposure to a variety of drugs or infections, and usually occurs in patients who are deficient in glucose-6-phosphate dehydrogenase (G-6-PD) enzyme. Aluminium phosphide, a fumigant widely used in india, has been reported to produce intravascular hemolysis in only one patient who also had concomitant G-6-PD deficiency. This report describes the occurrence of intravascular hemolysis with aluminium phosphide poisoning in a patient with normal G-6-PD levels. This is of significance as jaundice in patients with this poisoning is often attributed to hepatic damage alone.- - - - - - - - - - ranking = 2keywords = intravascular (Clic here for more details about this article) |
5/119. bacillus cereus causing fulminant sepsis and hemolysis in two patients with acute leukemia.PURPOSE: hemolysis is so rarely associated with bacillus cereus sepsis that only two very well documented cases have been reported. This article reports two unusual cases of bacillus cereus sepsis with massive intravascular hemolysis in patients who had acute lymphoblastic leukemia (ALL). patients AND methods: A 20-year-old woman who was 9 weeks pregnant experienced a relapse of ALL. A therapeutic abortion was performed. During week 4 of reinduction the patient had abdominal pain, nausea, and vomiting, with severe neutropenia but no fever. Her condition deteriorated rapidly with cardiovascular collapse, acute massive intravascular hemolysis, and death within hours of the onset of symptoms. blood cultures were positive for bacillus cereus. Postmortem histologic examination and cultures revealed bacillus cereus and candida albicans in multiple organs. The second patient, a 10-year-old girl, presented with relapsed T-cell ALL. In the second week of reinduction, she had abdominal pain followed by hypotension. Again, no fever was noted. Laboratory studies showed intravascular hemolysis 12 hours after admission. Aggressive support was promptly initiated. Despite disseminated intravascular coagulation; cardiovascular, hepatic, and renal failure; and multiple intracerebral hypodense lesions believed to be infarcts, the patient recovered fully and resumed reinduction therapy. CONCLUSIONS: bacillus cereus infection can have a fulminant clinical course that may be complicated by massive intravascular hemolysis. This pathogen should be suspected in immunosuppressed patients who experience gastrointestinal symptoms and should not be precluded by the absence of fever, especially if steroids such as dexamethasone are being given. Exchange transfusion may be lifesaving in bacillus cereus septicemia associated with massive hemolysis.- - - - - - - - - - ranking = 5.2509856974946keywords = intravascular, intravascular coagulation, coagulation (Clic here for more details about this article) |
6/119. Acute intravascular hemolysis secondaryto out-of-group platelet transfusion.BACKGROUND: Acute intravascular hemolysis is rarely associated with platelet transfusion. Out-of-group single-donor platelets may cause hemolysis if the donor has high-titer ABO hemagglutinins. CASE REPORT: A 44-year-old woman, blood group A, was recently diagnosed with acute myeloid leukemia and was receiving chemotherapy. After the transfusion of apheresis platelets from a group O donor, back pain, hemoglobinuria, and hemoglobinemia developed, and her Hb dropped by 2.3 g per dL, despite the transfusion of 2 units of RBCs. RESULTS: Investigation revealed acute intravascular hemolysis with a positive DAT due to anti-A(1) on her RBCs. The donor's titer of anti-A(1) was greater than 16,000. CONCLUSION: review of published cases raises the possibility that hemolytic reactions to out-of-group platelets may be more frequent since the use of apheresis platelets has increased.- - - - - - - - - - ranking = 6keywords = intravascular (Clic here for more details about this article) |
7/119. Acute intravascular hemolysis in two patients transfused with dry-platelet units obtained from the same ABO incompatible donor.Since 1989 we have been collecting dry-platelets on a routine basis. Dry-platelets are those collected along with 25-30 ml of contaminating plasma cell with separators such as the Amicus, AS 104 and the Excel Pro. Platelets are resuspended in non plasma media for storage and for at least 60 hours their viability and functionality are not impaired. In this article we report on two hemolytic crises determined by two O Rh D units of single donor platelets (SPD) taken from the same donor in a double-apheresis session. The two split units were administered to two A Rh D patients suffering from metastatic breast cancer and severe aplastic anemia (SAA) respectively. In both cases the hemolytic reaction was of the intravascular type, with a drop in hemoglobin (Hgb) level from 8.6 to 5.4 and from 8.8 down to 5.3 g/dl respectively. From the patients' RBC only alpha agglutinins were eluted and donor's indirect antiglobulin test (IAT) was negative with extended panel RBCs. In the first case the clinical course after erythroexchange (Erex) was uneventful whereas in the second one, that suffering from SAA, after Erex, acute renal failure and shock did complicate the clinical course and the patient died seven days after the incriminated platelet transfusion.- - - - - - - - - - ranking = 5keywords = intravascular (Clic here for more details about this article) |
8/119. Serious side effects of rifampin on the course of WHO/MDT: a case report.A male born in 1935 was diagnosed as having lepromatous leprosy when he was 17 years old. In addition to dapsone (DDS) monotherapy, he had been treated with rifampin (RMP) for 2 terms: first with 450 mg a day for 2 years when he was 39 years old; second with 150 mg a day for 2 months after a 1-year interval from the first regimen. During these entire courses with RMP, no complication was noted. When he was 64 years old in 1999, a diagnosis of relapsed borderline tuberculoid (BT) leprosy was made, and he was started on the multibacillary (MB) regimen of the world health organization multidrug therapy (WHO/MDT). After the third dose of monthly RMP, he developed a flu-like syndrome and went into shock. A few hours later, intravascular hemolysis occurred followed by acute renal failure. He was placed on hemodialysis for 7 series and recovered almost completely about 2 months later. The immune complexes with anti-RMP antibody followed by complement binding may have accounted for these symptoms. Twenty-four reported cases of leprosy who had developed side effects of RMP under an intermittent regimen were analyzed; 9 of the cases had had prior treatment with RMP but 15 had not. Adverse effects were more likely to occur in MB cases and were more frequent during the first 6 doses of intermittent regimens. The cases with prior treatment with RMP had had a higher incidence of serious complications such as marked hypotension, hemolysis and acute renal failure. However, many exceptions were also found, and we could not verify any fully dependable factor(s) to predict the side effects of RMP. More field investigation is desirable, and monthly administration of RMP must be conducted under direct observation through the course of WHO/MDT.- - - - - - - - - - ranking = 1keywords = intravascular (Clic here for more details about this article) |
9/119. Intravascular hemolysis by IgA red cell autoantibodies.A 66-year-old male patient with severe intravascular hemolysis is presented. Laboratory investigation revealed initially a negative direct antiglobulin test (DAT), suggesting a Coombs-negative hemolytic anemia. Additional testing with monospecific anti-IgA was strongly positive. IgA autoantibodies with anti-e specificity and nonspecific IgA autoantibodies were identified. A diagnosis of IgA-only-associated warm AIHA was made. Treatment included transfusion of multiple e-negative typed red cell concentrates and administration of high-dose prednisone. The pathophysiologic mechanism of the rare IgA-induced warm AIHA is discussed.- - - - - - - - - - ranking = 1keywords = intravascular (Clic here for more details about this article) |
10/119. Severe intravascular hemolysis after transcatheter closure of a large patent ductus arteriosus using the Amplatzer duct occluder: successful resolution by intradevice coil deployment.A 21-year-old female developed severe unremitting intravascular hemolysis following closure of a large patent ductus arteriosus using an Amplatzer duct occluder. Percutaneous deployment of fibered platinum coils within the nitinol wire cage of the Amplatzer duct occluder abolished the residual shunt through the device and resulted in cessation of intravascular hemolysis and reversal of its adverse sequelae.- - - - - - - - - - ranking = 6keywords = intravascular (Clic here for more details about this article) |
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