I thought: If you can get enough blood through a small butterfly needle filling a small tube to do the necessary tests, why must we jab big needles into adults and fill comparatively huge tubes to do the same assessments?
— and, when I reached for an I.V. line, a butterfly needle, just the right size and calibre, appeared exactly when I needed it so that I could keep my eyes trained on the thin purplish vein in the crook of the elbow.
The knob of the oxygen turned effortlessly who would have noticed that it had just been oiled?—and, when I reached for an I.V. line, a butterfly needle, just the right size and calibre, appeared exactly when I needed it so that I could keep my eyes trained on the thin purplish vein in the crook of the elbow.
Mice were anesthetized with 1 3 % isoflurane, and the right femoral vein was isolated for placement of a catheter (27-g butterfly needle with 12-cm polyurethane tubing, Visualsonics, Toronto, Canada) to facilitate the injection of radiotracers and contrast medium.
Before injection of ICG, pre-contrast photoacoustic imaging was performed for 1 min. Next, ICG was injected via the tail vein using a 27-G butterfly needle attached to a disposable microsyringe at an initial rate of 0.02 ml/s using an automatic injector (Fusion Touch, ISIS, Osaka, Japan).
The right ventricle of the heart was punctured with a 25 gauge butterfly needle and syringe.
A butterfly needle was inserted into the left ventricle, and an incision was made in the right atrium.
The butterfly needle was held beside the heart as 10 ml of saline was expelled into the thoracic cavity.
A 25-gauge butterfly needle attached by tubing to a perfusion pump was placed in the left ventricle, and an incision made in the right atrium.
