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Accuracy of clinical manoeuvres in detection of minimal ascites.

A study was conducted to assess the clinical accuracy of various clinical manoeuvres and signs used routinely for detection of ascites. Sixty-six patients admitted in medical ward of a teaching hospital after initial screening by a consultant were selected. Exclusion criteria were; cases with previous history of ascites, who had undergone paracentesis in the recent past or with evidence of ascites from history. Another clinician blind to history and clinical details assessed the presence of ascites by the selected methods a sonographer blind of clinical and historical details assessed the cases for presence of ascitic fluid. The clinical findings were compared using ultrasonographic (USG) findings as gold standard. Ascites was detected in 35 patients by USG. the mean weight and abdominal girth of study subjects with or without ascites were comparable (p > 0.05). Sensitivity of auscultatory percussion was highest (65.7%) followed by flank dullness (57.1%) and least for fluid wave sign (20.0%). Fluid wave sign had the highest specificity (100%). We found that none of the manoeuvres studied for detection of ascites was both highly sensitive and specific. However, auscultatory percussion could be useful for initial screening of patients to detect ascites.