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Biomedical subjects

M Pietro

Publications and source records attributed to M Pietro.

5 recordsLinked to original sources
PubMed1994

Localization of colonic lesions with endoscopic tattoo.

PURPOSE: Intraoperative localization of small tumors or polypectomy sites is frequently a difficult problem. In addition, the distance measured from the anus to the lesion by the endoscopist can be inaccurate. The purpose of our study was to evaluate the utility of India ink tattoo injection as a preoperative marking technique before colon surgery. METHODS: Colonic lesions were marked at preoperative colonoscopy, by multiple, small-volume injections of sterile India ink using a sclerotherapy needle, adjacent to the lesion. RESULTS: This technique was used in 14 patients with colonic carcinoma or villous adenoma not amenable to polypectomy. There was excellent intraoperative localization of the lesion in 11 patients. The complication rate was 7 percent. CONCLUSION: Colon tattoo allows precise localization of lesions with minimal risk at the time of resection.

Adenoma, Villous↗
PubMed1993

Analysis of phosphate kinetics in hemofiltration and hemodiafiltration: formulation of an efficiency index.

The kinetics of phosphate (P) during a treatment of hemofiltration or hemodiafiltration follows a simple exponential law, and P in 90 min reaches a stationary level that remains constant until the end of the treatment. The theoretical compartmental model cannot be estimated by a dialytic treatment, but a simpler diffusive model may be considered. Once the stationary level is reached, the net flux of P from the inaccessible compartments to the accessible compartment may be estimated via the parameters obtained in the exponential model. Hemodiafiltration seems more efficient than hemofiltration in determining P clearance. Thus an efficiency index that accounts for the period in which P is eliminated from the accessible compartment has been formulated.

Hemofiltration↗