Biomedical subjects
P S Treweeke
Publications and source records attributed to P S Treweeke.
Direct percutaneous embolisation of a false aneurysm with steel coils.
A false aneurysm of the peroneal artery was catheterised directly through the calf and embolised with steel coils and gel foam. This technique has not been previously described.
The assessment of deep vein valve incompetence by ascending phlebography with a Valsalva manoeuvre: a comparison with descending phlebography.
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Intravenous digital subtraction arteriography: a comparison of peripheral versus central contrast injection.
The diagnostic quality of intravenous digital arteriograms using peripheral and central injections in 50 patients were compared. No significant difference in diagnostic quality was noted. It is concluded that a peripheral injection is the most convenient method of performing an intravenous digital arteriogram.
The incidence of cardiac arrhythmias during intravenous digital subtraction angiography: a comparison of peripheral and central injections.
Intravenous digital subtraction arteriography (IV-DSA) was carried out in 204 patients with arteriosclerotic peripheral vascular disease using the non-ionic contrast medium iopamidol 370. In 124 patients the injection was made into an antecubital vein and in 80 into the right atrium. Rhythm strip electrocardiograms showed no significant difference in incidence or type of arrhythmias between either injection method (p greater than 0.95).
A comparative trial of the diagnostic quality of and tolerance for two low concentration low osmolality contrast media for phlebography.
We report a prospective randomised double blind study comparing the diagnostic quality of and tolerance for ascending phlebography in 100 patients using two different low osmolality contrast media, ioxaglate and iohexol, at a concentration of 200 mg I/ml. The immediate and delayed side effects were minimal in both groups and the difference between the two media was not statistically significant. All the phlebograms were of diagnostic quality. We conclude that both ioxaglate and iohexol are suitable agents for leg phlebography in low concentrations.
Contrast agent-induced thrombophlebitis following leg phlebography: lohexol compared with meglumine iothalamate.
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A comparative trial of the diagnostic quality of and tolerance for two concentrations of ioxaglate when used for phlebography.
We report a prospective, randomised, double blind study comparing the diagnostic quality of and tolerance for ascending phlebography in 100 patients using two different concentrations of ioxaglate, 320 mg/ml and 200 mg/ml. The immediate and delayed side effects were minimal in both groups and the difference between the two concentrations was not statistically significant. All the phlebograms were of diagnostic quality. We conclude that, with its lower osmolality, lower viscosity and lower cost, ioxaglate 200 mg/ml is a suitable medium for routine use in ascending phlebography of lower limbs.
Contrast agent induced thrombophlebitis following leg phlebography: iopamidol versus meglumine iothalamate.
A comparison was made of the incidence of venous thrombophlebitis resulting from the use of a high-osmolality contrast medium (Conray 60%, meglumine iothalamate), and a low-osmolality contrast medium (Niopam 61%, iopamidol). In 20 patients Conray was injected into one leg and Niopam into the other. The incidence of thrombophlebitis was then determined using the iodine-125 fibrinogen uptake test in a prospective, randomised, double-blind study. There was significantly less thrombophlebitis with Niopam than with Conray and it is concluded that Niopam is a safer contrast medium for phlebography.