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N J Everitt

Publications and source records attributed to N J Everitt.

25 records · Page 2Linked to original sources
PubMed1993

Fine bore silicone rubber and polyurethane catheters for the delivery of complete intravenous nutrition via a peripheral vein.

The aim of the study was to evaluate two fine bore catheters for the delivery of complete intravenous nutrition (IVN), of osmolality 1250 mosm/kg, via a peripheral vein. 50 patients were randomised to receive either a 23G silicone rubber catheter or 22G polyurethane catheter. The median duration of feeding was 9 days for silicone rubber catheters and 10 days for polyurethane catheters. Silicone rubber catheters developed complications significantly more frequently (44%) than polyurethane catheters (22%, p < 0.05). There was no significant difference in the median life span of the catheters removed because of complications, nor in the daily risk of thrombophlebitis. 92% of patients who were fed through a polyurethane catheter required only a single catheter for the duration of IVN. The peripheral venous route should be the first choice when the administration of IVN is considered for a period of less than 2 weeks.

Journal Article↗
PubMed1993

Evaluation of current practices in routine preoperative crossmatching for transurethral resection of the prostate.

Increasing demand for blood during elective surgery has led to attempts to rationalize routine preoperative crossmatching to those operations when there is a reasonable (greater than 30%) chance of it being required. Results of a questionnaire returned by 86% of the urology units in Great Britain show that 41% continue to crossmatch 2 units of blood before transurethral prostatectomy. A review of 301 transurethral prostatectomies performed with preoperative grouping and saving of blood showed that only 11% of the patients required transfusion. The need for transfusion was significantly associated with presentation in chronic or acute on chronic retention (p < 0.01), and the operative factors of weight of resection (p < 0.0001) and degree of hemostasis (p < 0.001). Therefore, a policy of routine preoperative blood grouping and saving is safe, and could be widely adopted, leading to financial saving and a decrease in wastage of blood that becomes too old to use.

Aged↗
PubMed1991

Gallstone ileus.

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Aged↗
PubMedDate not supplied

Ultrasonic investigation of the effect of topical glyceryl trinitrate on peripheral arm vein diameter: implications for intravenous nutrition.

BACKGROUND: It has been suggested that topical glyceryl trinitrate (GTN) ointment may cause venodilatation and hence deter thrombophlebitis. However, objective evidence of an increase in vein diameter has not been demonstrated. METHODS: B mode ultrasonography was used to measure arm vein diameter. In a prospective study, measurements were taken before and after 24 hours of exposure to topical GTN. RESULTS: Reproducibility of vein diameter measurement was demonstrated. Basilic veins were larger than cephalic veins, but exposure to GTN ointment for 24 hours was not associated with measurable venodilatation. CONCLUSIONS: Ultrasonography enabled noninvasive measurement of intraluminal vein diameter. It is unlikely that GTN prevents thrombophlebitis in superficial arm veins by causing venodilatation.

Arm↗