A 55-year-old man on ICU has septic shock. Cardiac output monitoring shows SVV of 16% during controlled mechanical ventilation at TV 8 mL/kg in sinus ...

Question

A 55-year-old man on ICU has septic shock. Cardiac output monitoring shows SVV of 16% during controlled mechanical ventilation at TV 8 mL/kg in sinus rhythm. He also has right ventricular dysfunction on echocardiography. Is SVV reliable in this patient?

Accepted Answer

No - right ventricular dysfunction is a condition where SVV may overestimate fluid responsiveness because cyclic RV impedance changes from positive pressure ventilation are exaggerated by the failing RV

Answer

Yes - SVV is always reliable if the patient is ventilated in sinus rhythm

Answer

SVV is only reliable in spontaneously breathing patients

Answer

SVV requires a pulmonary artery catheter

Answer

SVV is not affected by any cardiac condition

uk-fficm MCQ (SBA): SVV Limitations

A 55-year-old man on ICU has septic shock. Cardiac output monitoring shows SVV of 16% during controlled mechanical ventilation at TV 8 mL/kg in sinus rhythm. He also has right ventricular dysfunction on echocardiography. Is SVV reliable in this patient?