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How Good is Ultrasound at Diagnosing PTA?

RebelEM

Background: The increased utility and accessibility of point-of-care ultrasound (POCUS) has allowed clinicians the freedom to rethink their diagnostic approach for many common diseases, including peritonsillar abscess (PTA). Test characteristics of ultrasound for the diagnosis of peritonsillar abscess: A systematic review and meta-analysis.

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Best Of EAST #5: How Good Is Lung Ultrasound For Pneumothorax?

The Trauma Pro

They advise that the chest ultrasound should be used alone with caution. However, it is at odds with a paper published in 2021 from George Washington University. References: Lung ultrasound underdiagnoses clinically significant pneumothorax. 2021 Nov;49:393-398. false negative rate. EAST 2024, Podium paper 21.

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The Ultrasound-Guided Genicular Nerve Block

ACEP Now

The innervation of the knee is complex, but much of its sensory innervation is supplied by the genicular nerves, which are easy targets for ultrasound-guided nerve blocks. Step 2 Place the ultrasound system contralateral to the affected knee so that you have a clear line of sight of the ultrasound screen when performing the block.

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emDOCs Podcast – Episode 110: Primary Spontaneous Bacterial Peritonitis

EMDocs

Ultrasound can assist: confirm ascites, evaluate for best site, abdominal wall thickness, blood vessels along needle track. Diagnosis, Evaluation, and Management of Ascites, Spontaneous Bacterial Peritonitis and Hepatorenal Syndrome: 2021 Practice Guidance by the American Association for the Study of Liver Diseases. Hepatology.

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Superior Mesenteric Artery Syndrome (SMA Syndrome) in Children

Pediatric EM Morsels

England, 2021) The third portion of the duodenum courses between the SMA and the aorta, which can lead to external compression of the duodenum. England, 2021) In SMA syndrome the angle is decreased to < 22 o and the normal distance <8 mm. England, 2021) This condition is often attributed to rapid weight loss.

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Chest Pain in Children: ReBaked Morsel

Pediatric EM Morsels

Ultrasound diagnosis of occult pneumothorax. The role of point-of-care ultrasound in the diagnosis of pericardial effusion: a single academic center retrospective study. Ultrasound J. Published 2021 Feb 4. Pediatr Clin North Am. 2010 Dec;57(6):1221-34. PMID: 21111115. Crit Care Med. 2005 Jun;33(6):1231-8. 2021;13(1):2.

EKG/ECG 271
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Trick of the Trade: Gel-free ultrasound-guided peripheral IV technique

ALiEM

You set up everything, have the patient positioned, and then notice there is no sterile ultrasound gel. The trick is to eliminate anything of poor acoustic impedance between the ultrasound probe and the patient’s skin. Note that some ultrasound manufacturers do not recommend the use of isopropyl alcohol on their transducers.