Comparative in vitro interactions of ceftazidime, meropenem, and imipenem with amikacin on multiresistant Pseudomonas aeruginosa.

The myelodysplastic syndrome(s): a perspective and review highlighting current controversies

Fifty-seven patients in initial phase of acute promyelocytic leukemia (APL) were treated in the same department with heparin infusion, platelet transfusions, and two related induction regimens both including cytosine arabinoside and daunorubicin. Clinical and biological findings at presentation were studied. The complete remission (CR) rate was 53%. Twenty-seven patients (47%) died during the initial course of the disease, either before day 5 (early death [ED], n = 7) or after day 5 (death in aplasia [DA], n = 20). Most ED was due to intracerebral hemorrhage (6/7), especially when large hemorrhages had been seen on fundus oculi examination. Most DA was due to multivisceral failure (9/20). No correlation was found between initial disseminated intravascular coagulation (DIC) and death. However, the worsening of coagulation parameters during induction therapy, with or without initial DIC, significantly increased the occurrence of renal and respiratory failure which were particularly frequent during the first month. The median duration of survival was short (3.5 months) and the median duration of CR (11 months) was similar to that of other acute myeloid leukemias treated with the same regimens. The possible causes of the high mortality observed during the initial courses of APL and the possible benefit of a more graduate induction chemotherapy are discussed.

Acute promyelocytic leukemia in 57 previously untreated patients.

Acute monoblastic leukemia: a clinical and biologic study of 74 cases.

Methicillin-resistant Staphylococcus aureus versus the burn patient

We reviewed 213 consecutive adult pancytopenic patients to determine the frequency of underlying pathology, to analyze our diagnostic procedure, and to determine the value of peripheral blood data for diagnosis. Pancytopenia was defined as the association of hemoglobin level below 12 g/dl in males and 11.5 g/dl in females, leukopenia below 4 x 10(9)/L, and thrombocytopenia below 150 x 10(9)/L. The bone marrow aspirates were normo- or hypercellular in 140 cases (66%). Bone marrow biopsies, performed in 93 cases, documented the presence of myelofibrosis in 67 cases. Aplastic anemia was diagnosed in 10% of the cases. Malignant myeloid disorders (acute myeloid leukemias, myelodysplastic syndromes, acute myeloid disorders with myelofibrosis) represented 42% of the cases and various malignant lymphoid disorders 18%. Vitamin deficiencies accounted for 7.5% and nonhematological pathology 10% of the cases. The bone marrow aspirate was sufficient for the diagnosis in 55% of the cases, and the trephine biopsy was necessary in 30%. In the remaining cases, other complementary tests were necessary to achieve final diagnosis. A discriminant analysis, focused on the hemogram data, showed that parameters obtained by analysis of blood smears were helpful for the diagnosis, especially the presence or absence of blast cells and/or of abnormal lymphoid cells.

Adult patients presenting with pancytopenia: a reappraisal of underlying pathology and diagnostic procedures in 213 cases.

Evolution of bacterial susceptibility to antibiotics during a six-year period in a haematology unit

Two hundred bacterial septicemia occurring in neutropenic patients (PMN less than 1,000 microliter) were analyzed. Most of these patients had hematologic malignancies. The underlying disease, the degree of neutropenia the association of septic focus with the bacteremia, the responsive microorganisms and their evolution during hospitalization were studied as prognosis factors. The overall mortality was 32.5 p. 100. The mortality was higher in patients whose granulocyte count was lower than 500 microliter. The occurrence of major septic focus (pulmonary, perineal infection, diarrhea with abdominal distension, ORL, or cutaneous extensive focus) during bacteremia was a highly significant factor of bad prognosis. The mortality of bacteremias with and without major septic focus was respectively 62 p. 100 and 15 p. 100. A study of the distribution of the bacterias was performed in terms of mortality and duration of hospitalization. "Escherichia coli" and gram positive cocci were predominant during the two first days and mortality was then low. After that time, others Gram-negative bacterias appeared, especially "Pseudomonas aeruginosa" and the mortality was increasing until the twentieth day. Therefore, the authors raise the opportunity of antibiotic therapy according to the duration between the beginning of the hospitalization and the occurrence of sepsis in neutropenic patients. The role of the extensive use of a curative antibiotic association using colistine and nalidixic acid between 1974 and 1976 is discussed in the emergence of more gram positive cocci bacteremias between 1976 and 1978 than between 1974 and 1976 in the same intensive care unit.

Bacterial septicemia in neutropenia patients

Twenty cases of acute monoblastic leukemia are studied according to definite criterias: cytology, cytochemical staining, lysozyme production. The study points out the tumoral characters: hematodermy, gingivitis, central nervous system leukemia and the lack of important bone marrow incompetence. 47 per cent of complete remissions are obtained with daunorubicin, aracytin combination therapy. Other useful chemical agents, and prospects for maintenance therapy are discussed.

Acute monoblastic leukemia. Clinical and therapeutic aspects in 20 cases

Lactic acidosis during acute leukemia

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