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quiz!",[215,221],{"type":216,"data":217},"free_text",{"readDurationInSeconds":218,"title":219,"text":220},10.666666666666666,"Pop Quiz: January 9, 2025","\u003Cdiv>\u003Cdiv>\u003Cdiv>\u003Cp>\u003Cstrong>Compared to a healthy person, what changes in mixed venous oxygen saturation (SvO\u003Csub>2\u003C\u002Fsub>) and cardiac output (CO) would you expect in a patient with cardiogenic shock?\u003C\u002Fstrong>\u003Cbr>\u003Cbr>A. \u003Cspan>Increased SvO\u003C\u002Fspan>\u003Csub>2\u003C\u002Fsub>\u003Cspan>, decreased CO\u003C\u002Fspan>\u003C\u002Fp>\u003Cp>B. Decreased SvO\u003Csub>2\u003C\u002Fsub>, decreased CO\u003C\u002Fp>\u003Cp>C. \u003Cspan>Increased SvO\u003C\u002Fspan>\u003Csub>2\u003C\u002Fsub>\u003Cspan>, increased CO\u003C\u002Fspan>\u003C\u002Fp>\u003Cp>D. \u003Cspan>Decreased SvO\u003C\u002Fspan>\u003Csub>2\u003C\u002Fsub>\u003Cspan>, increased CO\u003C\u002Fspan>\u003C\u002Fp>\u003C\u002Fdiv>\u003Cdiv>\u003Cp>\u003Cspan lang=\"EN-US\">\u003C\u002Fspan>\u003Cspan> \u003C\u002Fspan>\u003C\u002Fp>\u003C\u002Fdiv>\u003C\u002Fdiv>\u003C\u002Fdiv>",{"type":216,"data":222},{"readDurationInSeconds":223,"title":224,"text":225},22.400000000000002,"Check your answer!","\u003Cp>\u003Cstrong>The correct answer is B. Decreased SvO\u003Csub>2\u003C\u002Fsub>, decreased CO\u003C\u002Fstrong>\u003Cbr>\u003Cbr> \u003Cstrong>Explanation:\u003C\u002Fstrong>\u003Cbr>\u003Cbr>\u003Cspan>Remember that low cardiac output is the primary insult in cardiogenic shock.\u003C\u002Fspan>\u003Cbr>\u003Cbr>\u003Cspan>Mixed venous O\u003Csub>2\u003C\u002Fsub> saturation is a measure of tissue oxygen extraction, which is a surrogate measure of cardiac output.\u003C\u002Fspan>\u003C\u002Fp>\u003Cp>\u003Cspan>When the cardiac output is low as in cardiogenic shock, the blood has longer to circulate around the body, giving the tissues more time to extract oxygen. Plus, the tissues are hungry for oxygen. \u003C\u002Fspan>\u003C\u002Fp>\u003Cp>\u003Cspan>So SvO\u003C\u002Fspan>\u003Csub>2\u003C\u002Fsub>\u003Cspan> and CO must go in the same direction. 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