Ultrasonically Detected Subpleural Lung Consolidations in The Emergency Room: A Case Report| Stephy Publishers
SOJ Complementary and Emergency Medicine - (SOJCEM)| Stephy publishers
Abstract
We report the clinical
case of a 76- year-old patient who was admitted to the emergency department due
to respiratory distress. He had a history of Systemic arterial hypertension,
type 2 diabetes mellitus and hypothyroidism. The patient reports symptoms that
began three days prior to admission, including dyspnea, fever, myalgia,
arthralgia, headache and respiratory distress that was exacerbated 1 day prior
to admission. Physical examination revealed a conscious patient with the
following vital signs: blood pressure 120/62mmHg, heart rate 109bpm,
respiratory rate 28rpm, temperature 38.8°C, arterial oxygen saturation 76%,
dyspnea, use of accessory muscles, tachycardia, tachypnea, which met the
operational definition for Covid-19. Upon admission to the service, a pulmonary
ultrasound was performed in which subpleural consolidations were identified,
predominantly in the right hemithorax, as well as an air bronchogram and little
pleural effusion. Based on these observations, the patient was admitted to the
unit, where management with supplemental oxygen was started using a face mask
with a reservoir bag. A chest X-ray was performed in which a diffuse
interstitial alveolar pattern was identified in both hemithoraxes. Later a
simple chest tomography was performed in which changes compatible with CO-RADS
5 were identified. He continued with established management and during his stay
in the service, he evolved to deterioration to need advanced management via
air. This study suggests that pulmonary ultrasound may be an effective and
reliable tool in the initial evaluation of patients with respiratory distress
in the context of Covid-19 pneumonia and that the identification of subpleural
consolidations represent a prognostic factor of the disease: identifying them
quickly after admission suggests a worse evolution of the disease, thus
prompting us to make correct and concrete decisions regarding the management
and treatment of these patients, without having to wait for complementary
studies such as chest radiography and even tomography.
Keywords: Pneumonia,
Covid 19, Pulmonary Ultrasound, Chest Tomography, subpleural consolidation
Introduction
Lung ultrasound has multiple advantages over computed tomography
and x-ray equipment. In particular, the 9-15 MHz high-frequency linear array
probe can clearly show the morphology and changes of subpleural lesions, and
changes in air and water content in consolidated peri pulmonary tissues.1
Pulmonary ultrasound in light of current evidence is mainly aimed at the
diagnostic orientation of the most frequent causes of acute respiratory failure
(90.5% of admission to the emergency room/Intensive Care Unit): pneumothorax,
pneumonia, pulmonary consolidations, pulmonary embolism, pulmonary congestion
and interstitial disorders, even with superior performance to chest radiography
and in this time of pandemic it is an indispensable, useful, easy-to-use tool
in the diagnosis, treatment and prognosis of the patient.
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