Assessment of distribution of ventilation and regional lung compliance by electrical impedance tomography in anaesthetized horses undergoing alveolar recruitment manoeuvres

Ambriskó, Tamás Dezső; Schramel, Johannes P.; Hopster, Klaus; Kästner, Sabine; Moens, Yves

doi:10.1016/j.vaa.2016.03.001

Cited by 29 publications

(46 citation statements)

References 24 publications

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Section: Discussionmentioning

confidence: 99%

“…Such a factor would then have to be prospectively tested in healthy horses and horses with diseased lungs as well as under conditions of controlled and spontaneous breathing. EIT-based monitoring of tidal volume would add clinical value to the scientifically well-described assessment of the distribution of such tidal volumes in horses [2,3,21,22]. VT 4 9 NICO , tidal volume measured by spirometry; EIT ROI , impedance change measured within the two lung regions of interest; EIT thorax , impedance change measured within the whole EIT image; RR, respiratory rate; PIP, peak inspiratory pressure.…”

Section: Discussionmentioning

confidence: 99%

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Monitoring of tidal ventilation by electrical impedance tomography in anaesthetised horses

Mosing

Waldmann

Raisis

et al. 2018

Equine Veterinary Journal

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Monitoring of tidal ventilation by electrical impedance tomography in anaesthetised horses

Mosing

Waldmann

Raisis

et al. 2018

Equine Veterinary Journal

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“…This can either be achieved by applying continuous positive airway pressure (CPAP) in spontaneously breathing patients or positive end‐expiratory pressure (PEEP) during mechanical ventilation . Furthermore CMV can be used to open up collapsed alveoli by application of high peak inspiratory pressures and performing a recruitment manoeuvre .…”

Section: Part 2: Pulmonary Ventilation and Controlled Ventilationmentioning

confidence: 99%

“…In 2006, the first paper in equine patients was published on this concept . Since then, the use of high peak inspiratory pressures to open up atelectatic lung areas has been extensively tested in horses .…”

Section: Mechanical Ventilation During Anaesthesiamentioning

confidence: 99%

“…During RM peak inspiratory pressures, up to 80 cmH 2 O and PEEP of 10–30 cmH 2 O are used to open up collapsed airways and adjacent alveolar structures. A stepwise approach by increasing and decreasing PEEP levels over a certain time period has a better effect on oxygenation compared with a single sustained high‐pressure manoeuvre over 50 s . Furthermore, the positive response is superior in dorsally recumbent horses compared with laterally recumbent ones .…”

Section: Mechanical Ventilation During Anaesthesiamentioning

confidence: 99%

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Maintenance of equine anaesthesia over the last 50 years: Controlled inhalation of volatile anaesthetics and pulmonary ventilation

Mosing

Senior

2018

Equine Veterinary Journal

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SummaryIn the first edition of this journal, Barbara Weaver wrote a review titled 'Equine Anaesthesia', stating that, at that time, it was quickly becoming accepted practice that many horses were being anaesthetised 'by essentially similar procedures, i.e. premedication, induction and then maintenance by controlled inhalation'. To celebrate the 50th anniversary of the first edition of this journal, this review covers the development of understanding and practice of inhalational anaesthesia and controlled ventilation in horses over the last 50 years. We review how the perceived benefits of halothane led to its widespread use, but subsequently better understanding of halothane's effects led to changes in equine anaesthetic practice and the utilisation of different inhalation agents (e.g. isoflurane and sevoflurane). We discuss how more recently, better understanding of the effects of the 'newer' inhalation agents' effects has led to yet more changes in equine anaesthetic practice, and while, further new inhalation agents are unlikely to appear in the near future, further enhancements to anaesthetic practice may still lead to improved outcomes. We review advances in our understanding of the anatomy and pathophysiology of the equine lung as well of the effects of anaesthesia on lung function and how these predispose to some of the common problems of gas exchange and ventilation during anaesthesia. We identify the aims of optimal mechanical ventilation for anaesthetic management and whether the various methods of ventilatory support during equine anaesthesia achieve them. We also highlight that further developments in equipment and optimal ventilator modes are likely in the near future.

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Successful management of hypoxaemia in a mule during general anaesthesia

Hoeberg

Levionnois

Andreis

2021

Vet Record Case Reports

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An 8-year-old, 167 kg mule was scheduled for surgical treatment of a hip luxation in lateral recumbency. During general anaesthesia, after a short phase of spontaneous breathing followed by mechanical ventilation at standard settings, the mule developed hypoxaemia (arterial oxygen partial pressure (PaO 2 ) 8.3 kPa). First, respiratory rate, tidal volume and fraction of inspired oxygen (FiO 2 ) were increased; 5 cmH 2 0 of positive end-expiratory pressure (PEEP) and nebulized salbutamol were administered. Second, three vital capacity manoeuvres were executed (tidal volume of 20 ml kg −1 ). No immediate improvement in PaO 2 (8.0 kPa) was observed. A further recruitment manoeuvre with increased peak inspiratory pressure (up to 44 cmH 2 O) and PEEP (25 cmH 2 O) was performed. Over the following 120 min, PaO 2 increased progressively. The mule recovered without complications. This case reports that mules can develop hypoxaemia during general anaesthesia that can be treated with recruitment manoeuvres. However, the effect may not be immediate.This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made.

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Assessment of distribution of ventilation and regional lung compliance by electrical impedance tomography in anaesthetized horses undergoing alveolar recruitment manoeuvres

Cited by 29 publications

References 24 publications

Monitoring of tidal ventilation by electrical impedance tomography in anaesthetised horses

Monitoring of tidal ventilation by electrical impedance tomography in anaesthetised horses

Maintenance of equine anaesthesia over the last 50 years: Controlled inhalation of volatile anaesthetics and pulmonary ventilation

Successful management of hypoxaemia in a mule during general anaesthesia

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