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Biomedical subjects

C Högman

Publications and source records attributed to C Högman.

At least 19 recordsLinked to original sources
PubMed1991

Physiological response to phlebotomies for autologous transfusion at elective hip-joint surgery.

In order to study the physiological response to phlebotomies for autotransfusion, an autotransfusion program was designed for 10 patients undergoing hip-joint replacement surgery for arthrosis. 4 phlebotomies of 450 ml each were performed within 12 days. Blood samples were taken immediately before phlebotomy for blood hemoglobin (Hb), serum erythropoietin (Epo), reticulocyte count (ret) and erythrocyte 2,3-diphosphoglycerate (DPG). All 4 phlebotomies could be performed in 9/10 patients, and only 1 patient had significant symptoms (fatigue). The operation was performed 2 weeks after the last phlebotomy. None of the patients had recovered the initial Hb level at operation (24.8 +/- 9 per liter lower than initially), and they were all even more anemic after the operation (36.8 +/- 16.9 g/l lower than initially). Serum Epo increased from 13.6 +/- 7.2 IU to 30.6 +/- 12.2 (SD) IU per liter, and reticulocyte counts increased to a maximum of 3.68 +/- 1.69%. DPG increased in all patients except the one who had significant fatigue. It is concluded that the patients tolerated the phlebotomy program well but that a significant anemia developed. The compensatory increase in erythropoietin and reticulocyte count, adequate for this degree of anemia, was small compared to the increase seen at more severe anemia, indicating that there may be a role for pharmacological stimulation of erythropoiesis in blood predeposit programs.

Adult↗
PubMed1991

[Scandinavian recommendations for transfusion medicine].

A central issue at the 13th Scandinavian Congress on Blood Transfusion Medicine was national self-sufficiency in plasma and plasma products, as outlined in the resolution adopted by the Council of Europe in 1990. Delegates also discussed the serological screening of donors to prevent the transmission of infection, new developments in the production of blood components, leukocyte filtration and serological technology.

Blood Banks↗
PubMed1987

Postoperative complications after blood replacement with or without plasma. A trial in elective surgery.

A prospective, controlled and randomized study of 275 patients undergoing major surgery was performed to investigate if postoperative complications were influenced by restrictive use of plasma to replace operative blood loss. All patients were given 6% dextran (Macrodex) for thromboprophylaxis and haemodilution. The "Dextran Group" received equal amounts of 6% dextran and electrolyte solution as substitution for plasma loss. The need for red-cell transfusion (60% suspension in saline-adenine-glucose-mannitol storage medium) averaged 5.8 units in this group and 5.2 in the "Plasma Group". The respective mean totals of infused plasma and dextran were 400 ml and 1,383 ml in the Dextran Group, compared with 1,099 and 619 ml in the Plasma Group. The mean total electrolyte infusion in the first postoperative week was c. 7,500 ml in both groups. Serum albumin decreased considerably in both groups, but significantly more in the Dextran Group. The incidence and pattern of postoperative complications were similar in both groups. When blood loss is up to 50-60% of the total volume, Macrodex can be used in preference to plasma, unless administration of plasma protein is specifically indicated.

Dextrans↗
PubMed1987

A comparison between concentrations of free erythrocyte protoporphyrin and serum ferritin during development of iron deficiency by phlebotomy in polycythaemia vera patients.

Therapeutic venesection for polycythaemia vera (PV) produces iron deficiency. If iron supplementation is avoided, the frequency of venesections can be kept lower than if iron is given. This is the standard treatment for PV in our department, and this model for iron deficiency was used to compare serum ferritin, free erythrocyte protoporphyrin (FEP), serum iron and transferrin as indicators of iron deficiency. Eleven patients with PV were studied on a total of 90 occasions. Five patients were followed from normal iron status to iron deficiency, the other six were iron deficient at the start of the study. Serum ferritin and FEP became abnormal approximately simultaneously during the development of iron deficiency, serum ferritin in all patients, FEP in 8 out of 11 patients. There was a correlation between the two in all specimens (r = 0.75, p less than 0.001), but serum ferritin showed fewer false negative results. Serum transferrin alone was elevated only in 25% of the patients, and serum iron, although mostly subnormal, was rather inconsistent. It is concluded that serum ferritin and FEP can both be used to diagnose iron deficiency during venesection treatment of PV, whereas serum iron and transferrin are of little value.

Bloodletting↗
PubMed1979

Treatment of acute nonlymphoblastic leukemia in adults with daunorubicin-DNA complex: a preliminary report.

Forty-four adult patients under 60 years of age with acute nonlymphoblastic leukemia were randomized for induction treatment with one of the following three regimens: R 1 = courses of daunorubicin on day 1 + ARA-C on days 1--5; R 2 = courses of daunorubicin on days 1 and 2 + ARA-C on days 4--8; R 3 = courses of daunorubicin-DNA complex on days 1--2 + ARA-C on days 4--8. Out of 14 patients, 9 went into remission on R 1, 6 out of 14 on R 2, and 8 out of 16 on R 3. The preliminary results suggest that daunorubicin-DNA complex has the same efficacy for inducing remission as daunorubicin alone, if the same time intervals and dosages are used.

Acute Disease↗
PubMed1978

Serum ferritin levels in male blood donors: relation to number of phlebotomies and iron supplementation.

Serum ferritin estimation has been shown to be a reliable test to reveal iron deficiency. Such estimations have been made in groups of male blood donors with a varying number of previous phlebotomies and a mean interval between donations of 9.9 +/- 1.7 SD weeks. It was found that the mean ferritin level was significantly (p less than 0.001) lower in the blood donors than in nondonors. After 6-8 phlebotomies it was about 40% lower. Subnormal ferritin values were found in 10% of the donors, almost exclusively among those who had taken less than 1,000 mg of iron supplementation since the last donation. It is concluded that with a donation interval of about 10 weeks, there is a considerable risk for iron deficiency after about 6 donations. This risk is far less if more than 1,000 mg of iron supplementation is taken between phlebotomies. A role for serum ferritin estimation in monitoring donation intervals and/or iron therapy is suggested.

Anemia, Hypochromic↗