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Creatinine Clearance Calculation
             Male:           (140 − age in years) x weight (kg)  Female:     (140 − age in years) x weight (kg) x 0.85
                                  72 x Serum Creatinine                              72 x Serum Creatinine




                                                       Child-Pugh Score

                    Component                                         Points Scored
                                                 1                         2                        3

                              a
                   Encephalopathy               None                   Grade 1–2                 Grade 3–4
                      Ascites                   None            Mild or controlled by diuretics  Moderate or refractory despite
                                                                                                 diuretics

                     Albumin                  >3.5 g/dL               2.8–3.5 g/dL               <2.8 g/dL
                   Total bilirubin or    <2 mg/dL (<34 μmol/L)    2–3 mg/dL (34 μmol/L to   >3 mg/dL (>50 μmol/L)
                                                                       50 μmol/L)

                Modified total bilirubin b    <4 mg/dL                 4–7 mg/dL                 >7 mg/dL
                  Prothrombin time               <4                       4–6                      >6
                (seconds prolonged) or
              International normalized ratio    <1.7                    1.7–2.3                    >2.3
                      (INR)
            a
             Encephalopathy Grades
                Grade 1: Mild confusion, anxiety, restlessness, fine tremor, slowed coordination
                Grade 2: Drowsiness, disorientation, asterixis
                Grade 3: Somnolent but rousable, marked confusion, incomprehensible speech, incontinence, hyperventilation
                Grade 4: Coma, decerebrate posturing, flaccidity
            b
             Modified total bilirubin used for patients who have Gilbert’s syndrome or who are taking indinavir or atazanavir


                           Child-Pugh Classification                          Total Child-Pugh Score c

                                  Class A                                           5–6 points

                                  Class B                                           7–9 points
                                  Class C                                           >9 points

            c
             Sum of points for each component















            Guidelines for the Use of Antiretroviral Agents in HIV-1-Infected Adults and Adolescents        O-17

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