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Biomedical subjects

D C Cattran

Publications and source records attributed to D C Cattran.

65 records · Page 4Linked to original sources
PubMed1977

Home peritoneal dialysis: 3 years' experience in Toronto.

From November 1972 to November 1975, 52 males and 39 females aged 11 to 71 years were trained for home peritoneal dialysis. Dialysis was performed through a permanent catheter 4 nights a week. The first 11 patients used the manual system, exchanging 2 / of dialysate solution every 50 to 60 minutes. Subsequently 73 patients used the automatic cycler and commercially available dialysate and 7 patients used Tenckhoff's reverse osmosis peritoneal dialysis machine. The average duration of training was 15, 11.6 and 15 dialysis days, respectively, for the three methods. For the 83 patients followed up, the average duration of home dialysis was 8.3 months (range, 0.5 to 33 months); the total number of dialyses at home was 10 571. Ten received a transplant, 20 were transferred to hospital peritoneal dialysis or hemodialysis, 8 died and 48 continued with home dialysis. Twenty-three patients had a total of 33 episodes of peritonitis, an incidence of 27.7% among the patients in the program for up to 3 years or 0.3% among all the dialyses. By November 1975, 46 patients had returned to their predialysis lifestyle, 18 were working part-time, 10 were able to work but were not doing so, and 9 were unable to work or care for themselves.

Adolescent↗
PubMed1977

A controlled trial of nondrolone decanoate in the treatment of uremic anemia.

Thirty-seven male dialysis patients, from three university hospital centers known to have adequate iron B12, and folate stores, were entered into a controlled trial to study the effects of nandrolone decanoate (200 mg i.m. weekly) on their anemia. An initial six-month stabilization period was followed by a randomized 12-month study, with crossover between treatment and control groups occurring at six months. Patients received parenteral iron therapy plus oral folate throughout the trial. All serious illnesses or major blood losses excluded the patients from analysis. The 24 patients with remnant kidneys showed an increase in hemoglobin and hematocrit of 24% by the end of six months of treatment (P less than 0.005), with a corresponding decrement during the six months of control, but the five anephric patients showed no statistically significant change compared to those patients whose kidneys were in place during the study. Complications of treatment were minimal, with injection site hematoma the only significant local effect and a rise in triglyceride the only significant systemic disturbance. Despite the improvement in anemia, the disadvantages, including the high cost of treatment, the apparent plateauing of benefits by five months, the minimal subjective improvement in life style, the risk of i.m. injection, plus the long term effects of increased lipids, should limit this therapy to patients with remnant kidneys who have severe symptomatic anemia or frequent transfusion requirements.

Adult↗
PubMed1977

Home peritoneal dialysis. A major advance in promoting home dialysis.

The institution of a home peritoneal dialysis program has allowed us to increase the number of patients with end-stage renal failure entering our home dialysis program from 42.5% to 67.5% of the total population. This represents a 56.5% increase over the rate achieved by home hemodialysis alone. Twenty-four percent of the home peritoneal dialysis patients could have managed home hemodialysis, but 38 could not and this represents 48% of the total patients who entered our home dialysis program, for the period of the study. These patients would have required institutional dialysis which would not have been practical for 52.6% of them because of the distance they live from Toronto. The results of home peritoneal dialysis have compared favorably with home hemodialysis in the 2 concurrent but unmatched series in respect of training time, failure rate, need for in-hospital back-up and patient survival. A long-term study of matched patients randomized to either treatment group such as that described by Blumenkrantz will finally answer the question as to how valid is our contention that peritoneal dialysis compares favourably to hemodialysis for the treatment of end-stage renal failure.

Adolescent↗
PubMed1977

Urine fibrin degradation products in detection and management of acute and chronic renal transplant rejection.

Detection of rejection by serial determinations of urine FDP using the latex agglutination slide test proved to be a reliable, simple and inexpensive method. In the absence of infection, clinical and biochemical acute rejection was preceded by a two-titer rise in excretion of urine FDP in 80% of 26 patients studied. It was not useful in predicting rejection in 44 stable long-term allograft recipients, although persistent elevation of urine FDP after anti-rejection therapy in these patients or those in the immediate post-transplant period implies ongoing rejection. Maintenance immunosuppression should be continued in these patients, but repeated high-dose steroid therapy should be limited because of their poor-term prognosis. Persistent increase in urine FDP may allow selection of those patients who would benefit from a trial of anticoagulant or antiplatelet therapy.

Creatinine↗
PubMed1976

Defective triglyceride removal in lipemia associated with peritoneal dialysis and haemodialysis.

Plasma lipids were measured in 78 uremic patients receiving either chronic peritoneal dialysis or haemodialysis. Type IV hyperlipemia was found in 60% of patients. The lipid level was not influenced by dietary habits or patient's age. Patients on chronic peritoneal dialysis had a significantly higher and more sustained hyperlipemia than the patients on haemodialysis. Triglyceride turnover studies showed that all patients, regardless of the type of dialysis or lipid level, had impaired triglyceride removal as the cause of this lipemia. This defect in triglyceride metabolism was only partially corrected by increasing the efficiency of the dialysis.

Adult↗
PubMed1975

Inhibition of lipoprotein lipase by uremic plasma, a possible cause of hypertriglyceridemia.

In an attempt to define pathogenesis of the previously described impaired triglyceride (TG) removal in uremia, the effects of the addition of normal and uremic plasma on the activity of lipoprotein lipase (LPL) from rat epididymal adipose tissue were examined. Six uremic patients on chronic dialysis and 13 normals were studied. Adding increments of normal and uremic plasma increased the LPL activity to maximal levels when 0.1 ml of plasma was added. Larger aliquots of uremic plasma produced marked inhibition of LPL activity. This inhibition was not observed with the normal plasma. When increasing amounts of uremic plasma were added to an incubation mixture already maximally activated by 0.1 ml of normal plasma, inhibition of LPL was again observed. This inhibition was still present in uremic plasma which had been dialysed against cold saline. The inhibitor was in the lipoprotein-free (d greater than 1.225) fraction of the plasma. The results indicate that uremic plasma has an LPL inhibitor which is probably a protein and may play a role in the pathogenesis of uremic hypertriglyceridemia.

Adipose Tissue↗
PubMedDate not supplied

Nutritional assessment of continuous ambulatory peritoneal dialysis patients.

This study revealed the following. Malnutrition was frequent (41.6%) in patients on CAPD for less than three months and was present in 18.1% of patients on CAPD for longer than 3 months. Fifty percent of these malnourished patients returned to normal on conventional nutritional management within 2 to 6 months, but 10% remained malnourished throughout the study period. There was increased mortality among malnourished patients, but we were unable to demonstrate that the state of nutrition was an independent risk factor, because of the increased prevalence of other co-morbid risk factors known to influence survival and because of the limitation of a small sample size. The influence, if any, of nutritional state as an independent risk factor on the survival of CAPD patients should be answered, because malnutrition is potentially reversible with aggressive nutritional interventions, such as enteral, parenteral, or intraperitoneal supplementation.

Humans↗