Publications by authors named "Renata Ramos Rodrigues"
Effects of a stepwise alveolar recruitment maneuver on lung volume distribution in dogs assessed by computed tomography.
Front Vet Sci
January 2024
Article Synopsis
- - Pulmonary atelectasis is a common issue during anesthesia, and mechanical ventilation along with alveolar recruitment maneuvers (ARMs) and positive end-expiratory pressure (PEEP) can help improve lung function, despite the risk of lung injuries like volutrauma and barotrauma.
- - The study aimed to assess how lung volume distribution changes with different levels of PEEP during ARMs in 12 anesthetized dogs, using CT scans for detailed monitoring.
- - Results showed that ARMs significantly improved lung ventilation and static compliance, especially at specific PEEP levels (10 and 5 cmHO), while also affecting cardiovascular measures like heart rate and mean arterial blood pressure.
Background: Electrical impedance tomography (EIT) has been an essential tool for assessing pulmonary ventilation in several situations, such as the alveolar recruitment maneuver (ARM) in PEEP titration to maintain the lungs open after atelectasis reversion. In the same way as in humans and dogs, in horses, this tool has been widely used to assess pulmonary aeration undergoing anesthesia, mechanical ventilation, recruitment maneuver, standing horses, or specific procedures.
Objectives: The present study aimed to evaluate the distribution of regional ventilation during ARM based on lung monitoring assessment by EIT, with a focus on better recruitment associated with less or no overdistention.
Background: During protective mechanical ventilation, electrical impedance tomography (EIT) is used to monitor alveolar recruitment maneuvers as well as the distribution of regional ventilation. This technique can infer atelectasis and lung overdistention during mechanical ventilation in anesthetized patients or in the ICU. Changes in lung tissue stretching are evaluated by monitoring the electrical impedance of lung tissue with each respiratory cycle.
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