A 52-year-old male with history of dilated cardiomyopathy was admitted with progressive dizziness and worsening dyspnea. His blood pressure was 100/60 with a regular pulse of 70 per minute. Jugular vein wave showed a prominent pulse like regular cannon waves. Cannon wave occurs in conditions with atrioventricular dissociation and right atrial contraction against a closed tricuspid valve. Large A waves are associated with reduced right ventricular compliance or elevated right ventricular end-diastolic pressure.

The present paper aims to develop a simple direct colorimetric method for the determination of cerberin in rat plasma without any previous chemical separation of the cerberin from Cerbera odollam. The method is based on reaction of the cardenolide group of cerberin with 3,5-dinitro salicylic acid [DNS] in alkaline medium which yields a bright orange-yellow complex that exhibits absorption maxima at 370nm.Beer's law obeyed in the concentration range of 50-250µg/mL. The result of the method was validated statistically and by recovery studies.

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