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Using Tegaderm™ during ocular ultrasound was associated with poorer image quality and had no effect on patient comfort. If you’re using ocular ultrasound as a modality, consider if using a Tegaderm™ will get in the way of a good diagnosis.

Source
Covered or uncovered: A randomized control trial of Tegaderm versus no Tegaderm for ocular ultrasound. Am J Emerg Med. 2022 Aug 28;61:87-89. doi: 10.1016/j.ajem.2022.08.044. Online ahead of print.

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This is an EM-focused review of pericardial tamponade, including the bedside echo.

Source
Pericardial tamponade: A comprehensive emergency medicine and echocardiography review. Am J Emerg Med. 2022 Aug;58:159-174. doi: 10.1016/j.ajem.2022.05.001. Epub 2022 May 6.

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Point-of-care ultrasound carotid artery compression was quicker than manual palpation in determining return of spontaneous circulation.

Source
Point-of-care ultrasound compression of the carotid artery for pulse determination in cardiopulmonary resuscitation. Resuscitation. 2022 Jul 2;S0300-9572(22)00590-1. doi: 10.1016/j.resuscitation.2022.06.025. Online ahead of print.

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POCUS in the ED can lead to clinically useful information, although research has not yet demonstrated patient-centered improvements in care. While this modality shouldn’t be used for routine screening in the ED, it performs well with a focused clinical question.

Sources
- PoCUS: Just because we can doesn't mean we should. Acad Emerg Med. 2022 Apr;29(4):515-517. doi: 10.1111/acem.14474. Epub 2022 Mar 22.
- Risk-Benefit Analysis of PoCUS for Suspected, Ruptured Abdominal Aortic Aneurysm. Acad Emerg Med. 2022 Apr 14. doi: 10.1111/acem.14506. Online ahead of print.

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Upper airway ultrasound (UA-US) may eventually help us predict if a patient will have a difficult laryngoscopy. However, this is not ready for ED use, and more studies are needed.

Source
Airway Ultrasound as Predictor of Difficult Direct Laryngoscopy: A Systematic Review and Meta-analysis. Anesth Analg. 2022 Apr 1;134(4):740-750. doi: 10.1213/ANE.0000000000005839.

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Among patients with symptomatic PE who are low risk by sPESI, the addition of right ventricular assessment predictors (echo, CT, troponin, and BNP) significantly improved prognostication for clinical deterioration within 5 days. 

Source
Can right ventricular assessments improve triaging of low risk pulmonary embolism? Acad Emerg Med. 2022 Mar 15. doi: 10.1111/acem.14484. Online ahead of print.

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Use of pulsed-wave Doppler ultrasound by a trained emergency medicine physician to detect any femoral pulse was more accurate than manual palpation but did not necessarily confer an adequate blood pressure (i.e. SBP ≥ 60 mmHg).  Calculation of peak systolic velocity of ≥20 cm/s had a stronger correlation with a SBP ≥ 60 mmHg.

Source
Femoral artery Doppler ultrasound is more accurate than manual palpation for pulse detection in cardiac arrest. Resuscitation. 2022 Feb 4;S0300-9572(22)00032-6. doi: 10.1016/j.resuscitation.2022.01.030. Online ahead of print.

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A recent publication, cheekily titled Not so FAST-Chest ultrasound underdiagnoses traumatic pneumothorax, concluded ultrasound for traumatic pneumothorax should be considered with caution. This response letter breaks down the main reasons why this article is likely a red herring.

Source
Daniel J Kim, Nik Theyyunni, Rachel B Liu Ultrasound is superior to supine chest x-ray for the diagnosis of clinically relevant traumatic pneumothorax. J Trauma Acute Care Surg. 2022 Mar 14. doi: 10.1097/TA.0000000000003575. Online ahead of print.