Aszites - Klinische Untersuchung (Prüfung der Flankendämpfung) - AMBOSS Video

Introduction

This tutorial focuses on the clinical examination of the abdomen, specifically the assessment for ascites through the technique known as flank dullness during abdominal percussion. Understanding this procedure is essential for healthcare professionals and medical students as it aids in diagnosing conditions associated with fluid accumulation in the abdominal cavity.

Step 1: Positioning the Patient

• Ensure the patient is in a comfortable position, typically lying supine (on their back).
• Ask the patient to relax their abdominal muscles to facilitate accurate percussion.

Step 2: Understanding the Technique of Percussion

• Percussion involves tapping on the abdomen to produce sound waves that help determine the underlying structure.
• There are two main sounds to recognize:
  • Tympanic sound: Indicates the presence of gas in the intestines.
  • Dull sound: Suggests fluid or solid mass presence in the abdomen.

Step 3: Performing the Flank Dullness Test

• Begin by percussing the abdomen starting from the midline and moving toward the flank (side) of the body.
• Use your dominant hand to tap the non-dominant hand placed flat against the abdomen.
• Listen for changes in sound:
  • If the sound remains tympanic, it suggests no significant fluid.
  • If you hear a dull sound as you move towards the flank, it may indicate the presence of ascites.

Step 4: Confirming Flank Dullness

• To confirm flank dullness, ask the patient to shift their position (e.g., roll onto their side).
• Repeat the percussion on the side that is now up:
  • A change from tympanic to dull sound upon repositioning supports the diagnosis of ascites.

Common Pitfalls

• Ensure that the patient's bladder is empty, as a full bladder can produce a dull sound that may be misinterpreted.
• Be gentle while performing percussion to avoid causing discomfort to the patient.

Real-World Applications

• The flank dullness test is commonly used in clinical settings to assess for conditions such as cirrhosis, heart failure, or malignancies that may lead to fluid accumulation.
• It is a vital skill for practitioners in emergency medicine, internal medicine, and general practice.

Conclusion

The ability to accurately assess for ascites through flank dullness is a critical skill in clinical practice. By mastering patient positioning, percussion techniques, and understanding sound changes, healthcare professionals can effectively diagnose and manage conditions associated with abdominal fluid. For further learning, consider reviewing the broader context of ascites and its implications in various clinical scenarios.