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Biomedical subjects

M R Nair

Publications and source records attributed to M R Nair.

13 recordsLinked to original sources
PubMed2001

Rapid non-destructive quantitative estimation of urania/thoria in mixed thorium uranium di-oxide pellets by high-resolution gamma-ray spectrometry.

A non-destructive technique using high-resolution gamma-ray spectrometry has been standardised for quantitative estimation of uranium/thorium in mixed (ThO2-UO2) fuel pellets of varying composition. Four gamma energies were selected; two each from the uranium and thorium series and the time of counting has been optimised. This technique can be used for rapid estimation of U/Th percentage in a large number of mixed fuel pellets from a production campaign.

Radiation Monitoring↗
PubMed1990

Coronary artery spasm induced by anesthesia: a case report and review of the literature.

Anesthesia-induced coronary vasospasm has been reported only rarely. We report a case, without previous cardiac history, in which immediately after anesthesia induction a marked ST elevation was noted on the EKG monitor. Premature ventricular contractions as well as non-sustained ventricular tachycardia were noted. These changes resolved immediately after nitroglycerin infusion and 75 mg of lidocaine were given. A coronary angiogram revealed normal coronary arteries and left ventriculogram. Ergonovine stimulation was not performed. The patient was discharged home on calcium entry blockers and nitrates. Exercise stress test two weeks after discharge was negative for ischemia. Induction of anesthesia triggering coronary spasm has been reported rarely, and to our knowledge never in the presence of angiographically normal coronary anatomy. Coronary vasospasm with typical EKG changes--namely, ST elevation and ventricular arrhythmias--has to be included as a possible complication of general anesthesia. Recognition of this syndrome allows prompt treatment and prevention of future episodes.

Anesthesia, General↗
PubMedDate not supplied

Severe leukopenia and thrombocytopenia secondary to quinidine.

A case of severe thrombocytopenia and leukopenia secondary to quinidine is presented. The white cell count and platelet count returned to normal within five days after initiation of corticosteroid therapy and cessation of quinidine. Of interest is the fact that the patient had developed a purpuric rash twelve months earlier after drinking gin and tonic.

Drug Hypersensitivity↗