TheCVICU

TheCVICU

Cardiovascular Intensive Care Education

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  • Pressure Volume Loops

    Pressure Volume Loops

    Normal Pressure-Volume Loop A – Mitral Valve Closure B – Aortic Valve Open C – Aortic Valve Closure D – Mitral Valve Open E – Systolic Blood Pressure F – End Diastolic Volume G – End Systolic Volume B is also Diastolic Blood Pressure A -> B: Isovolumetric Contraction C -> D: Isovolumetric Relaxation G…

  • Shock Math

    Shock Math

    Cardiogenic Shock Math Goal values Cardiac index (CI): > 2.2 lpm/m2, Systemic vascular resistance (SVR): 800-1200 dynes/s/cm2, Central venous pressure (CVP): 8-12 mmHg. Fick CI/CO Derivation [math]CI = \frac{VO_2}{C_a-C_v}[/math], Where, [math]C_a and C_v[/math] are derrived from the Oxygen content equation: [math]CO_2 = \frac{1.34mLO_2}{gHb} * Hb * SaO_2 + 0.0031*PaO_2[/math], Hb is in g/dL; to convert…

  • Left Ventricular Chamber Quantification – Echocardiography

    Left Ventricular Chamber Quantification – Echocardiography

    Left Ventricular Linear Dimensions, Mass, and Ejection Fraction Normal Values Parameter Men Women Normal Mild Moderate Severe Normal Mild Moderate Severe LVIDD (cm) 4.2 – 5.8 5.9-6.3 6.4-6.8 > 6.8 3.8-5.2 53-5.6 5.7-6.1 >6.1 IVSD OR PWT (cm) 0.6-1.0 1.1-1.3 1.4-1.6 >1.6 0.6-0.9 1.0-1.2 1.3-1.5 >1.5 Indexed LV mass (g/m2) 49-115 116-131 132-148 >148 43-95…

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