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Biomedical subjects

C W Janssen

Publications and source records attributed to C W Janssen.

57 records · Page 4Linked to original sources

Central venous catheter with subcutaneous injection port (Port-A-Cath): 8 years clinical follow up with children.

Long-term intermittent venous access was established in 77 children by means of a central venous catheter (CVC) with a subcutaneous injection port (Port-A-Cath; PAC). Seventy of these children were included in this follow-up study. Sixty-three were treated for different malignant diseases, five for cystic fibrosis, one for severe hemophilia and one for central nervous system disease with seizures as the main problem. As of April, 1992, PACs had been in place for 3/12 to 8 3/12 years (cumulative 175 5/12 years) with 2,206 entries into the system. The PACs were used for blood sampling and administration of chemotherapy, antibiotics, fluids, total parenteral nutrition (TPN) and blood products. Portal infection was observed in four patients of which two patients had their PAC removed. Catheter dislocation was observed in two and catheter breakage in one. Portal occlusion, extravasation, thrombosis leading to removal of the PAC or other technical or psychological complications were not observed. The children continued normal activities, and the easy venous access decreased emotional stress during treatment. Local doctors were trained to use PACs, through which they administered maintenance chemotherapy. We conclude that long-time use of PACs in children is safe and has many advantages compared to traditional CVCs in use. Strict indications, meticulous implantation techniques and adequate handling are, however, mandatory.

Adolescent↗

Long term results after Nissen fundoplication and Belsey Mark IV operation in patients with reflux oesophagitis and stricture.

This retrospective study was undertaken to compare long term results of Nissen fundoplication and the Belsey Mark IV repair in patients with reflux oesophagitis and stricture between 1972 and 1987. 105 patients were operated on for reflux oesophagitis, and 43 of the patients had stricture. There was one postoperative death (after a Belsey Mark IV repair). The cumulative recurrence rate after the Nissen operation was 9%, all recurrences of oesophagitis occurring within the first two years. The cumulative recurrence after the Belsey repair was 37%. Only 15 of 32 patients treated with Nissen fundoplication for stricture needed dilatation after operation, and then only during the first two years. "Gas-bloat" occurred in 18% of the patients treated with Nissen fundoplication. We conclude that the Nissen fundoplication is a good operation for patients with severe reflux oesophagitis and for those with peptic strictures of the oesophagus. The Belsey Mark IV repair, however, cannot be recommended for patients with strictures.

Adult↗

The diagnostic potential of some routine laboratory tests. off.

The potential was tested of white blood cell count (WBC), haemoglobin concentration (Hb) and erythrocyte volume fraction (EVF) to differentiate between patients with acute mesenteric ischaemia (AMI), perforation of colon, perforation of peptic ulcer, and intestinal obstruction. The WBC in patients with AMI (18.95 +/- 6.88 10(3) ml-1) was significantly above the normal range (upper cut-off 11.0 10(3) ml-1; P < 0.0001). Other variables in the patient groups did not differ from those of healthy individuals. All variables were, however, different between patients with AMI and non-AMI (P < 0.001). Receiver operator characteristic (ROC) curves were constructed to define the optimal cut-off for each variable. Sensitivity and specificity of the variables were between 62% and 75%. Discriminant analysis of the variables classified 80% of the patients correctly into AMI and non-AMI groups.

Acute Disease↗