Biomedical subjects

J C Hackethorn

Publications and source records attributed to J C Hackethorn.

2 recordsLinked to original sources

PubMed1985

Caveats in the sonographic determination of fetal femur length for estimation of gestational age.

Alterations from the standard conditions under which measurements of fetal femurs are made may alter the estimate of gestational age by up to four weeks. We describe and quantify the errors induced by variations in depth, gain settings, and angle of the femur relative to the US beam. We describe a simple phantom that may be used to help eliminate these sources of possible error.

Female↗

PubMed1985

Antegrade internal ureteral stenting: a technical refinement.

A pliable, easy to place, double pigtail, internal ureteral stent made of elastomeric polyurethane is described. The tapered distal pigtail end minimizes bladder irritation and the combination of a pusher and absorbable suture enables optimal placement of the proximal pigtail end in the renal pelvis. Ten stents used in eight patients remained functional without bladder irritation for a mean period of 8 months (range, 2-14 months).

Adolescent↗