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Biomedical subjects

G Bourne

Publications and source records attributed to G Bourne.

4 recordsLinked to original sources

Sitting up post angioplasty: a new sheath technology.

A new angioplasty sheath has been developed which permits a patient to sit up to a 60 degree Semi-Fowler position post angioplasty with the sheath in place. To determine the safety of this device, we studied eleven (11) patients undergoing Percutaneous Transluminal Coronary Angioplasty (PTCA) compared with 11 PTCA patients treated in a standard fashion. The patients were evaluated for the length of time the sheath remained in place (study 17 +/- 6 hours versus control 19 +/- 5 hours), the time required to achieve hemostasis upon sheath removal (66 +/- 52 minutes versus 81 +/- 89 minutes), and the need for analgesics (frequency of 1.9 times versus frequency of 6.4 times per patient). Complications in the study group were 0 episodes of severe bleeding at the insertion site versus 1 episode in the control group, slight oozing in 8 study patients versus 7 control patients, small hematoma in 2 study patients versus 1 control patient, and large hematoma formation in 1 study patient versus 0 control patients. In summary, the use of a soft, flexible sheath allows the patient to safely site up in the Semi-Fowler position post PTCA with significant improvement of discomfort.

Angioplasty, Balloon, Coronary

Suicide.

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Humans

Use of pharmacokinetics to predict the distribution of pantothenate in dogs.

On the basis of plasma concentrations of pantothen[14C]ate, after its intravenous administration, a three compartment open model was proposed to predict the pharmacokinetics of pantothenate in dogs. The model assumed a central compartment comprising the plasma and other extracellular fluids, and distribution into two other peripheral compartments, one of which included the liver. Elimination of unchanged pantothenate was assumed to occur by metabolism from the compartment which included the liver. Distribution of pantothen[14C]ate from the plasma compartment into the liver compartment was shown to be very rapid; during 10 min after intravenous administration about 80 per cent of the dose had been cleared from the plasma compartment. The model successfully predicted the influence (first pass effect) of the liver on the fraction of an oral dose which reached the peripheral plasma unchanged.

Administration, Oral