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At least 325 records · Page 18Linked to original sources
PubMed1998

Tissue extraction and high-performance liquid chromatographic determination of ketoprofen entantiomers.

Local transcutaneous delivery of non-steroidal anti-inflammatory drugs avoids gastrointestinal side effects and concentrates drugs in the intended tissues. An extraction and HPLC method was developed for ketoprofen in skin, fascia and muscle. Tissue samples were homogenized in NaHCO3. After methylene chloride removal of lipids, the aqueous layer was acidified with HCl and back extracted into isooctane/isopropanol. Ketoprofen was derivatized with ethylchloroformate/S-(-)-alpha-phenylethylamine in triethylamine, then detected by HPLC. Ketoprofen recovery was linear (1-33 microg/g) and was detected in these tissues following in vivo cathodic iontophoresis (160 mA*min). This represents the first non-radioactive method for determination of ketoprofen in tissues following transcutaneous iontophoresis.

Administration, Cutaneous↗
PubMed1995

[Oxygen delivery and tissue extraction in septic shock].

UNLABELLED: Hemodynamic and oxygen transport variables were evaluated in 34 patients with septic shock during fluid repletion and infusion of vasoconstricting and inotropic catecholamines (dopamine, dobutamine). Hypovolemia, increased cardiac output (CO), low pulmonary and systemic vascular resistance dominated in initial hypotensive status. Oxygen consumption (VO2) decreased despite increased oxygen delivery (DO2). Hypotension and hypovolemia were successfully corrected by therapeutic intervention and significantly higher values of CO and DO2 were obtained. However, VO2 remained low and oxygen extraction index declined from the initial level. THE CONCLUSION: The underlying pathophysiological defect in septic shock is not altered hemodynamics or low DO2 but impaired tissue oxygen extraction. The usual hemodynamic resuscitation does not improve tissue oxygen utilization and the results in the treatment of septic shock remain poor.

Female↗