The figure below shows the progression of findings from normal A-line profile to a B-profile and eventually consolidation in a patient with COVID-19. Weinberg B, Diakoumakis EE, Kass EG, Seife B, Zvi ZB: The air bronchogram: sonographic demonstration. Am J Rontgenol 1986, 147: 593–595. 10.2214/ajr.147.3.593

BAT Careers. Be the change. Do Something Brilliant. BAT Careers. Be the change. Do Something Brilliant.

McGonigal MD, Schwab CW, Kauder DR, Miller WT, Grumbach K: Supplemented emergent chest CT in the management of blunt torso trauma. J Trauma 1990, 30: 1431–1435. 10.1097/00005373-199012000-00001 Slater A, Goodwin M, Anderson KE, Gleeson FV. COPD can mimic the appearance of pneumothorax on thoracic ultrasound. (2006) Chest. 129 (3): 545-50. doi:10.1378/chest.129.3.545 - Pubmed The absence of either or both of these features results in the abnormal curtain sign which is commonly seen in pleural effusion. Bats are harmless and pose no damage to your property. They eat only insects and would not damage any cables, wood or insulation. (in comparison with mouse or rats). The risk of infestation is lower also because in most cases they will have only one baby per year and they don’t build nests.

Lichtenstein D, Mezière G: Relevance of lung ultrasound in the diagnosis of acute respiratory failure. The BLUE-protocol. Chest 2008, 134: 117–125. 10.1378/chest.07-2800 In the 2012 film The Dark Knight Rises, the rusted remains of the destroyed Bat-Signal are still atop police headquarters. However, at the end of the film, with Batman declared dead, Gordon sees a restored Bat-Signal, providing hope that Batman has survived. (The signal itself is never used once in the film, however, making it the only live-action film about Batman where this occurs.) Grey scale ultrasound image depicting the curtain sign – the aerated lung in the costophrenic recess overlaps part of liver and diaphragm creating a demarcated leading edge of the lung air artefact, giving the appearance of curtain (of air). Both images are in different part of the respiratory cycle. CS – curtain sign; L – liver; D – diaphragm It has been reported that the positive predictive value of absent lung sliding for the detection of pneumothorax is only 87% in the general population, falls to 56% in the critically ill, and to 27% in patients with respiratory failure ( 3, 5, 17, 18).

Sonographic diagnosis of pneumothorax - PMC

Soldati G, Testa A, Sher S, Pignataro G, La Sala M, Gentiloni Silveri N: Occult traumatic pneumothorax: diagnostic accuracy of lung ultrasonography in the emergency department. Chest 2008, 133: 204–211. 10.1378/chest.07-1595 Lichtenstein D, Courret JP: Feasibility of ultrasound in the helicopter. Intensive Care Med 1998, 24: 1119. 10.1007/s001340050730 In the Elseworlds Batman & Dracula trilogy novel Batman: Crimson Mist, Gordon and Alfred use the Signal to summon the vampire Batman after he has killed Penguin's gang, wanting to establish the situation now that Batman has surrendered to his vampire instincts. Later, Two-Face and Killer Croc use the signal to draw Gordon and Alfred to the roof so that the two sides can discuss a possible alliance against the vampire Batman and his new assault on Gotham's criminals. Bouhemad B, Zhang M, Lu Q, Rouby JJ: Clinical review : bedside lung ultrasound in critical care practice. Crit Care 2007, 11: 205. 10.1186/cc5668

These free printable bat templates available in multiple sizes are perfect for creative crafts and decorations this Halloween season.

POCUS Lung – Introduction to A-lines and B-lines

The Bat-Signal made its first on-screen appearance in the Batman and Robin serial by Columbia. In its first incarnation, it was simply a high-powered projector that was kept in Commissioner Gordon's office. When needed, he would simply wheel the Bat-Signal over to his office window and shine it directly to the sky. Though small, it was powerful enough to cast an image of the Bat symbol against the clouds. Lichtenstein D, Mezière G, Biderman P, Gepner A: The lung point: an ultrasound sign specific to pneumothorax. Intensive Care Med 2000, 26: 1434–1440. 10.1007/s001340000627 Gargani L, Lionetti V, Di Cristofano C, et al.: Early detection of acute lung injury uncoupled to hypoxemia in pigs using ultrasound lung comets. Crit Care Med 2007, 35: 2769–2774. 10.1097/01.CCM.0000287525.03140.3F The BLUE-protocol combines signs, associates them with a location, resulting in seven profiles (Figure 8).Jardin F, Farcot JC, Boisante L, Curien N, Margairaz A, Bourdarias JP: Influence of positive end-expiratory pressure on left ventricle performance. New Engl J Med 1981, 304(7):387–392. 10.1056/NEJM198102123040703 In Tim Burton's 1989 film Batman, Batman gives the signal to the police as a gift so that they can summon him when he is needed after he defeats The Joker. The Bat-Signal as it appears in the 1989 film Batman Weinberger SE, Drazen JM. Harrison’s principles of internal medicine. 16. New York: McGraw-Hill; 2005. Diagnostic procedures in respiratory diseases; pp. 1505–1508.