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Ultrasound-Guided Drainage

Case Study

Ultrasound-Guided Drainage

Things To Do With A Needle & A Probe: Ultrasound-Guided Drainage

Things To Do With A Needle & A Probe: Ultrasound-Guided Drainage

Basically with sedation and avoidance of vital structures, any cavity or compartmentalized fluid filled or viscous structure may be drained and analyzed with cytology and culture. Pericardiocentesis, thoracocentesis, abdominocentesis, and cystocentesis are the traditional ultrasound guided drainage procedures that have been performed most historically. US guided abscess drainage and antibiotic injection into various organs has been a technique utilized frequently on our team with solid levels of success and is currently a subject of study. No evidence of complications has been observed. The reasoning lies in the fact that abscesses tend to have a granulation bed or organization of tissue that walls them off from the tissue circulation. The body’s own immune system attempts to sectorialize the abscessing pathology to minimize systemic affects. This causes reduced blood flow into the abscess or necrosis itself that may be evidenced on power Doppler assessment or the abscess and surrounding tissue. If there is no blood flow to the lesion then its reasonable to assume that even endovenous medications and even the body’s own immune elements will have difficulty reaching the sectorialized pathology. Therefore, a clinical sonographer armed with a 2 inch 14-16- IV catheter may drain an abscess or infected cyst in any organ and follow the drainage procedure with injection of a body weight dose of antibiotic directly into the lesion with a 22-gauge needle. (prostatic abscess injection.avi) This has been performed with success and without complication in our experience in the liver, pancreas, omental abscesses, lung, prostate, and spleen. We do not recommend this in the kidney for concern for renal toxicity. Enrofloxacin or other quinolones have been usually the antibiotic of choice in these procedures but cephalosporins and ampicillin have also been utilized. There is no way of knowing at the time of the drainage procedure whether the abscess is septic or not or if the injected antibiotic is actually specific for the potential bacteria involved. However, considering the spectrum of antibiotics that may be injected endovenously (criteria for selection of the antibiotic), we tend to utilize the antibiotic that likely would have an effective spectrum against the usual pathogens that may dwell in the affected organ.

Example of adbsess drainges are demonstrsated in the videos below:

Patient Information

Type of Imaging : Ultrasound
Status : Complete