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Biomedical subjects

A R Watson

Publications and source records attributed to A R Watson.

At least 55 records · Page 3Linked to original sources

Urinary tract infection in early childhood.

The infantile kidney is most vulnerable to damage from vesicoureteric reflux combined with urinary tract infection. A UTI, as well as giving rise to significant morbidity, may provide the clue to an underlying congenital abnormality such as obstructive uropathy. Urinary tract infection is less prevalent in circumcised boys and infants who are breastfed. Often the diagnosis of UTI is not thought of because of the non-specific nature of the symptoms in this age group and the difficulties of obtaining and interpreting urine cultures. Too little use and attention is paid to proper collecting bags and clean catch specimens. Suprapubic aspiration should always be considered in the septicaemic infant where UTI is high on the list of differential diagnoses. Escherichia coli is responsible for most UTIs although in very young infants, kidneys may be involved secondary to septicaemic infection. Antibiotic therapy should be prompt and investigations comprehensive in young infants. Most children with vesicoureteric reflux are managed conservatively with long term prophylactic antibiotics.

Anti-Bacterial Agents↗

Outcome of antenatally detected cystic dysplastic kidney disease.

Forty four fetuses with multicystic dysplastic kidney (MCDK) disease recognised on antenatal ultrasound were studied prospectively. In nine aborted fetuses and in five who died in the neonatal period the MCDK disease was bilateral or there were associated lethal abnormalities or syndromes. All surviving infants had unilateral disease and in six (20%) there was significant reflux into the normal contralateral kidney. Since 1988 the management of unilateral MCDK disease has been conservative with no child developing sepsis, hypertension, or malignancy. Serial ultrasound examinations suggest that MCDK lesions involute with time and conservative rather than operative management is favoured.

Female↗

Hypertensive adolescents detected by a school surveillance programme: a problem of obesity.

BP has been measured in secondary school children in Nottingham as part of a routine health appraisal since 1988. School nurses who have received appropriate training refer children with a BP greater than the 95th centile for age and sex (Task Force USA 1987) initially to a community paediatrician or general practitioner. Of 14,570 children checked, only 23 patients (14 female) with a mean age of 13.9 years (range 10-15.8 years) were referred to a paediatric nephrology clinic to be seen in consultation with a dietitian. In 12 of 23 children there was a family history of hypertension and in seven a family history of other cardiovascular disease. No patient with secondary hypertension was identified; 14 patients (61%) were overweight or obese (nine) on the basis of percentage weight for height at the time of referral. BP values have tended to normalise on follow-up. Although six of 22 patients lost weight with dietetic support, eight patients gained weight. The school surveillance programme for BP is felt by the school nurses to be a valuable health educational tool and has resulted in few hospital referrals. Although initial dietetic advice may be of value, obesity remains a significant problem for the majority of adolescents in this group.

Adolescent↗

Gastrostomy buttons for feeding children on continuous cycling peritoneal dialysis.

The promotion of growth in infants and young children with chronic renal failure (CRF) requires an aggressive approach to feeding, often in combination with early dialysis. Supplementary feeding has usually involved the use of nasogastric tubes, but these can have many problems. We report our experience with a gastrostomy button device (Bard Ltd.) for long term feeding. Ten children (7 male) had an initial gastrostomy catheter inserted at a median age of 2.0 years (range 0.25-8.5 years). None of the children required an operation for gastrooesophageal reflux and 6 had placement of the gastrostomy catheter at the time of insertion of the Tenckhoff catheter for continuous cycling peritoneal dialysis (CCPD). The catheter is usually exchanged for a similar sized (18 gauge) button device after 4 weeks. All ten children received CCPD in addition to overnight feeding using an enteral feeding pump. The buttons have been in use for a mean of 12 months (range 2-33 months) and are only changed if the anti-reflux valves fail. Nutritional goals have been achieved and growth parameters maintained or improved in 9 children. The button has many advantages over nasogastric tubes or gastrostomy catheters. It has been welcomed by our families in reducing the stress of feeding these young children.

Catheters, Indwelling↗

Micronutrient supplementation in children on continuous cycling peritoneal dialysis (CCPD).

Data on the micronutrient (vitamin and trace mineral) requirements of children on chronic peritoneal dialysis is limited. Few preparations are of suitable content and palatability. In a prospective study we have assessed and compared the serum levels and dietary intakes of micronutrients (vitamins A, E, B12, folate and zinc, copper, iron) in 7 children on CCPD who were receiving either Ketovite tablets (vitamins C, E and B complex) and Cholecalciferol or a more comprehensive supplement, Paediatric Renal Seravit (vitamins A, E, D, C and B complex with trace minerals). All children received nutritional supplements orally or via a gastrostomy button. These supplements contributed significantly to their nutritional intakes. The mean dietary intakes of the studied micronutrients, with the exception of vitamins A, E, B12 and folate, were below RDA (USA) values. The Renal Seravit was tolerated by only 5 of the 7 patients. There was no significant difference in serum levels of the micronutrients while on the Paediatric Renal Seravit compared to Ketovite. Serum iron levels remained low on both supplements. A comprehensive micronutrient supplement may still be required in children on prolonged dialysis.

Child↗

Intussusception nephrosis and Drash syndrome.

A 6-month-old female infant presented with intussusception. Post-operatively she was noted to have nephrotic syndrome. The oedematous bowel wall may have been the cause of the intussusception and this has not been previously described. In addition her karyotype was XY suggesting her nephropathy was associated with Drash syndrome.

Female↗

Should school nurses measure blood pressure?

The inclusion of blood pressure measurements in the routine health appraisal of junior school children was acceptable to children and staff and did not create undue anxiety. Of 677 children only 9 (1.33%) required follow up, 2 being referred to hospital out patients. With appropriate support school nurses should be encouraged to measure blood pressure.

Blood Pressure Determination↗

Organ donation.

Explore the source record for details and available documents.

Brain Death↗

Haematuria in an adolescent due to bladder carcinoma.

A 14-year-old boy had a 6 month history of recurrent macroscopic haematuria. A papillary non-invasive transitional cell carcinoma of the bladder was found at cystoscopy and treated by transurethral resection. In comparison to adults, bladder carcinoma is a rare cause of haematuria in children who appear to have a favourable prognosis.

Adolescent↗

Dilemmas associated with antenatally detected urinary tract abnormalities.

Over a five year period 55 fetuses had abnormalities of the urinary tract detected by antenatal ultrasound scan. The incidence was 1:935 total births during a one year prospective study. Intrauterine intervention was undertaken in five for suspected obstructive uropathy, which was confirmed in only two. Of 51 live born infants, five died (two with renal failure), and only 18 (35%) had a clinically detectable abnormality at birth. Twenty seven patients underwent postnatal operations, the remainder being treated conservatively. Antenatal counseling was seldom undertaken by those responsible for the postnatal care. There were many instances of prospective parents receiving little or inappropriate information. Greater cooperation is required between all the staff concerned particularly as the natural history and appropriate postnatal management of some urinary tract abnormalities are still not known.

Female↗

Familial spastic paraplegia, bilateral sensorineural deafness, and intellectual retardation associated with a progressive nephropathy.

We present a family in which at least four persons have evidence of an inherited disorder comprising a variable spastic paraplegia, bilateral sensorineural deafness, intellectual retardation, and a progressive nephropathy. Focal segmental proliferative lesions with sclerosis suggestive of mesangial IgA nephropathy (Berger's disease) were found on renal renal biopsy in two affected persons. The glomerular basement membrane showed none of the changes characteristic of Alport's syndrome. Males and females are affected and the segregation of the disease is consistent with dominant transmission.

Adult↗

The WBW jugular catheter as long term vascular access for hemodialysis.

Single-lumen silastic catheters were placed in the jugular veins of 12 patients to provide vascular access for hemodialysis. In all cases construction of arteriovenous fistulas had been difficult or impossible. The catheters have provided adequate dialysis with a single needle system for periods up to 32 months. Only one case of blood stream infection occurred, in a confused patient who damaged his catheter. There has been no evidence of venous thrombosis or other complications. Jugular vein catheters should be considered as long-term alternatives when A-V fistula construction is not possible.

Adult↗

Topical anaesthesia for fistula cannulation in haemodialysis patients.

The use of a local anaesthetic cream (EMLA; Astra) for arteriovenous fistula cannulation was compared to placebo in a double-blind randomised manner in 26 patients undergoing chronic haemodialysis who were currently using injections of lignocaine. The EMLA cream was highly effective compared to placebo (P less than 0.001) on visual analogue and verbal rating scales as well as ease of venepuncture (P less than 0.01). It also gave more pain relief and improved the ease of venepuncture compared to lignocaine injections. Patients expressed a strong preference for the EMLA cream, which has advantages that outweigh the cost and convenience factors.

Adult↗