Full Text Journal Articles by
Author Inez Frerichs

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Bedside Evaluation of Pulmonary Embolism by Saline Contrast Electrical Impedance Tomography Method:A Prospective Observational Study.

Huaiwu He, Yi Chi, Yun Long, Siyi Yuan, Rui Zhang, Inéz Frerichs, Knut Möller, Feng Fu, Zhanqi Zhao,

Am. J. Respir. Crit. Care Med. (American journal of respiratory and critical care medicine)
[2020, :]

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COVID-19 pneumonia: phenotype assessment requires bedside tools.

Zhanqi Zhao, Wan-Hsuan Kung, Hou-Tai Chang, Yeong-Long Hsu, Inéz Frerichs,

Crit Care (Critical Care)
[2020, 24(1):272]

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Detection of Acute Pulmonary Embolism by Electrical Impedance Tomography and Saline Bolus Injection.

Huaiwu He, Yun Long, Inéz Frerichs, Zhanqi Zhao,

Am. J. Respir. Crit. Care Med. (American journal of respiratory and critical care medicine)
[2020, :]

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Monitoring Lung Volumes During Mechanical Ventilation.

Peter A. Dargaville, Inéz Frerichs, David Tingay,

Respiratory inductive plethysmography (RIP) is a non-invasive method of measuring change in lung volume which is well-established as a monitor of tidal ventilation and thus respiratory patterns in sleep medicine. As RIP is leak independent, can measure end-expiratory lung volume as well as tidal volume and is applicable to both ... Read more >>

(Pediatric and Neonatal Mechanical Ventilation)
[0, :441-471]

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Optimal mean airway pressure during high-frequency oscillatory ventilation in an experimental model of acute respiratory distress syndrome: EIT-based method.

Songqiao Liu, Zhanqi Zhao, Li Tan, Lihui Wang, Knut Möller, Inéz Frerichs, Tao Yu, Yingzi Huang, Chun Pan, Yi Yang, Haibo Qiu,

BACKGROUND:High-frequency oscillatory ventilation (HFOV) may theoretically provide lung protective ventilation. The negative clinical results may be due to inadequate mean airway pressure (mPaw) settings in HFOV. Our objective was to evaluate the air distribution, ventilatory and hemodynamic effects of individual mPaw titration during HFOV in ARDS animal based on oxygenation ... Read more >>

Ann Intensive Care (Annals of intensive care)
[2020, 10(1):31]

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Thoracic electrical impedance tomography in Chinese hospitals: a review of clinical research and daily applications.

Zhanqi Zhao, Feng Fu, Inéz Frerichs,

Chinese scientists and researchers have a long history with electrical impedance tomography (EIT), which can be dated back to the 1980s. No commercial EIT devices for chest imaging were available until the year 2014 when the first device received its approval from the China Food and Drug Administration. Ever since ... Read more >>

Physiol Meas (Physiological measurement)
[2020, 41(4):04TR01]

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The influence of an electrical impedance tomography belt on lung function determined by spirometry in sitting position.

Na Zhang, Hongying Jiang, Chenxi Zhang, Qing Li, Yi Li, Bin Zhang, Jia Deng, Guangyu Niu, Bo Yang, Inez Frerichs, Knut Moeller, Feng Fu, Zhanqi Zhao,

OBJECTIVE:The aim of the study was to examine whether an electrical impedance tomography (EIT) electrode belt changed the lung function in healthy volunteers and patients with respiratory muscle weakness (RMW) and chronic obstructive pulmonary disease (COPD). APPROACH:In total, thirty subjects were included (10 healthy volunteers, 10 subjects with RMW, maximum ... Read more >>

Physiol Meas (Physiological measurement)
[2020, 41(4):044002]

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Simple Electrical Impedance Tomography Measures for the Assessment of Ventilation Distribution.

Inéz Frerichs, Zhanqi Zhao, Tobias Becher,

Am. J. Respir. Crit. Care Med. (American journal of respiratory and critical care medicine)
[2020, 201(3):386-388]

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Multimodal remote chest monitoring system with wearable sensors: a validation study in healthy subjects.

Inéz Frerichs, Barbara Vogt, Josias Wacker, Rita Paradiso, Fabian Braun, Michael Rapin, Laura Caldani, Olivier Chételat, Norbert Weiler,

OBJECTIVE:Development of wearable medical technology for remote monitoring of patients suffering from chronic lung diseases may improve the care, therapy and outcome of these patients. APPROACH:A multimodal system using wearable sensors for the acquisition of multiple biosignals (electrical bioimpedance of the chest for electrical impedance tomography and respiratory rate assessment, ... Read more >>

Physiol Meas (Physiological measurement)
[2020, 41(1):015006]

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Towards a thoracic conductive phantom for EIT.

Serena de Gelidi, Nima Seifnaraghi, Andy Bardill, Yu Wu, Inéz Frerichs, Andreas Demosthenous, Andrew Tizzard, Richard Bayford,

Phantom experiments are a crucial step for testing new hardware or imaging algorithms for electrical impedance tomography (EIT) studies. However, constructing an accurate phantom for EIT research remains critical; some studies have attempted to model the skull and breasts, and even fewer, as yet, have considered the thorax. In this ... Read more >>

Med Eng Phys (Medical engineering & physics)
[2020, 77:88-94]

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PEEP guided by electrical impedance tomography during one-lung ventilation in elderly patients undergoing thoracoscopic surgery.

Kun Liu, Chengya Huang, Meiying Xu, Jingxiang Wu, Inez Frerichs, Knut Moeller, Zhanqi Zhao,

Background:To examine the influence of positive end-expiratory pressure (PEEP) settings on lung mechanics and oxygenation in elderly patients undergoing thoracoscopic surgery. Methods:One hundred patients aged >65 years were randomly allocated into either the PEEP5 or the electrical impedance tomography (EIT) group (PEEPEIT). Each group underwent volume-controlled ventilation (tidal volume 6 ... Read more >>

Ann Transl Med (Annals of translational medicine)
[2019, 7(23):757]

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Oxygen Therapy Delivery and Body Position Effects Measured With Electrical Impedance Tomography.

Zhiyong Yuan, Xiaoning Han, Lisha Wang, Ping Xue, Yunbo Sun, Inéz Frerichs, Knut Möller, Jinyan Xing, Zhanqi Zhao,

BACKGROUND:The aim of this prospective randomized crossover study was to compare the short-term effects of high-flow nasal cannula (HFNC) therapy and a 45° head-up tilt to the short-term effects of conventional oxygen (O2) therapy in post-abdominal surgery patients. METHODS:A total of 18 subjects who were successfully weaned from ventilator support ... Read more >>

Respir Care (Respiratory care)
[2020, 65(3):281-287]

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Regional air trapping in acute exacerbation of obstructive lung diseases measured with electrical impedance tomography: a feasibility study.

Zhanqi Zhao, Mei-Yun Chang, Inéz Frerichs, Jia-Hao Zhang, Hou-Tai Chang, Chien-Hung Gow, Knut Möller,

BACKGROUND:Since bronchial abnormalities often exhibit spatial non-uniformity which may be not correctly assessed by conventional global lung function measures, regional information may help to characterize the disease progress. We hypothesized that regional air trapping during mechanical ventilation could be characterized by regional end-expiratory flow (EEF) derived from electrical impedance tomography ... Read more >>

Minerva Anestesiol (Minerva anestesiologica)
[2020, 86(2):172-180]

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Electrical impedance tomography for chest imaging in acute respiratory failure.

Inéz Frerichs, Zhanqi Zhao,

Eur. Respir. J. (The European respiratory journal)
[2019, 54(4):]

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Noninvasive measurement of stroke volume changes in critically ill patients by means of electrical impedance tomography.

Fabian Braun, Martin Proença, Anna Wendler, Josep Solà, Mathieu Lemay, Jean-Phillipe Thiran, Norbert Weiler, Inéz Frerichs, Tobias Becher,

Previous animal experiments have suggested that electrical impedance tomography (EIT) has the ability to noninvasively track changes in cardiac stroke volume (SV). The present study intended to reproduce these findings in patients during a fluid challenge. In a prospective observational study including critically ill patients on mechanical ventilation, SV was ... Read more >>

J Clin Monit Comput (Journal of clinical monitoring and computing)
[2019, :]

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Adaptive mechanical ventilation with automated minimization of mechanical power-a pilot randomized cross-over study.

Tobias Becher, Anna Adelmeier, Inéz Frerichs, Norbert Weiler, Dirk Schädler,

BACKGROUND:Adaptive mechanical ventilation automatically adjusts respiratory rate (RR) and tidal volume (VT) to deliver the clinically desired minute ventilation, selecting RR and VT based on Otis' equation on least work of breathing. However, the resulting VT may be relatively high, especially in patients with more compliant lungs. Therefore, a new ... Read more >>

Crit Care (Critical care (London, England))
[2019, 23(1):338]

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Early Recognition of Pneumothorax in Neonatal Respiratory Distress Syndrome with Electrical Impedance Tomography.

Marika Rahtu, Inéz Frerichs, Andreas D Waldmann, Claas Strodthoff, Tobias Becher, Richard Bayford, Merja Kallio,

Am. J. Respir. Crit. Care Med. (American journal of respiratory and critical care medicine)
[2019, 200(8):1060-1061]

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The incidence and interpretation of large differences in EIT-based measures for PEEP titration in ARDS patients.

Zhanqi Zhao, Li-Chung Lee, Mei-Yun Chang, Inez Frerichs, Hou-Tai Chang, Chien-Hung Gow, Yeong-Long Hsu, Knut Möller,

Positive end-expiratory pressure (PEEP) can be titrated by electrical impedance tomography (EIT). The aim of the present study was to examine the performance of different EIT measures during PEEP trials with the aim of identifying "optimum" PEEP and to provide possible interpretations of largely diverging results. After recruitment (maximum plateau ... Read more >>

J Clin Monit Comput (Journal of clinical monitoring and computing)
[2019, :]

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Initial Observations on the Effect of Repeated Surfactant Dose on Lung Volume and Ventilation in Neonatal Respiratory Distress Syndrome.

Merja Kallio, Anne-Sea van der Zwaag, Andreas D Waldmann, Marika Rahtu, Martijn Miedema, Thalia Papadouri, Anton H van Kaam, Peter C Rimensberger, Richard Bayford, Inéz Frerichs,

BACKGROUND:Exogenous surfactant administration is an essential part of respiratory distress syndrome treatment in preterm infants. Current guidelines recommend the first dose to be given as early as possible, followed by an additional dose if symptoms persist. The effect of additional dosing on regional ventilation and lung volume has not been ... Read more >>

Neonatology (Neonatology)
[2019, 116(4):385-389]

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Respiratory muscle endurance training with normocapnic hyperpnoea for patients with chronic spinal cord injury: A pilot short-term randomized controlled trial.

Jianing Xi, Hongying Jiang, Na Zhang, Jianjun Wang, Bin Zhang, Hongli Cao, Bo Yang, Inez Frerichs, Knut Möller, Zhanqi Zhao,

OBJECTIVE:To investigate the effects of normocapnic hyperpnoea training on pulmonary function and patient-reported outcomes in chronic spinal cord injury. DESIGN:Single-centre randomized controlled trial. PATIENTS:Eighteen patients with spinal cord injury > 24 months post-injury and without regular respiratory muscle training prior to the study were included prospectively. METHODS:Patients were randomly assigned to ... Read more >>

J Rehabil Med (Journal of rehabilitation medicine)
[2019, 51(8):616-620]

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Regional lung function in nonsmokers and asymptomatic current and former smokers.

Barbara Vogt, Kathinka Deuß, Victoria Hennig, Zhanqi Zhao, Ingmar Lautenschläger, Norbert Weiler, Inéz Frerichs,

Electrical impedance tomography (EIT) is able to detect rapid lung volume changes during breathing. The aim of our observational study was to characterise the heterogeneity of regional ventilation distribution in lung-healthy adults by EIT and to detect the possible impact of tobacco consumption. A total of 219 nonsmokers, asymptomatic ex-smokers ... Read more >>

ERJ Open Res (ERJ open research)
[2019, 5(3):]

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Chest electrical impedance tomography measures in neonatology and paediatrics-a survey on clinical usefulness.

Inéz Frerichs, Tobias Becher,

OBJECTIVE:Chest electrical impedance tomography (EIT) is currently applied in neonatal and paediatric patients, mainly within clinical studies. The findings of these studies imply that lung monitoring using EIT provides valuable information on regional lung ventilation and aeration at the bedside that might improve the therapy and care of this fragile ... Read more >>

Physiol Meas (Physiological measurement)
[2019, 40(5):054001]

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Detection of pulmonary oedema by electrical impedance tomography: validation of previously proposed approaches in a clinical setting.

Zhanqi Zhao, Hongli He, Jingying Luo, Andy Adler, Xiaoqin Zhang, Rongan Liu, Yunping Lan, Sen Lu, Xiaoxiu Luo, Yu Lei, Inez Frerichs, Xiaobo Huang, Knut Möller,

OBJECTIVE:The aim of the present study was to evaluate two previously proposed approaches based on electrical impedance tomography (EIT) to assess pulmonary oedema at the bedside. APPROACH:Fourteen patients with acute respiratory distress syndrome were included and examined prospectively. Patients were rotated laterally along their longitudinal axis from supine to 45-degree ... Read more >>

Physiol Meas (Physiological measurement)
[2019, 40(5):054008]

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Changes in Electrical Impedance Tomography Findings of ICU Patients during Rapid Infusion of a Fluid Bolus: A Prospective Observational Study.

Tobias Becher, Anna Wendler, Christine Eimer, Norbert Weiler, Inéz Frerichs,

Am. J. Respir. Crit. Care Med. (American journal of respiratory and critical care medicine)
[2019, 199(12):1572-1575]

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Performance of new spirometry reference values in preoperative assessment of lung function.

Barbara Vogt, Victoria Hennig, Kathinka Deuß, Lorenz Balke, Norbert Weiler, Inéz Frerichs,

BACKGROUND:Pulmonary function is not routinely assessed in patients without respiratory disease and symptoms before surgery, even if they are smokers. We aimed to check whether the new spirometric reference values of the worldwide Global Lung Initiative (GLI) affected the preoperative assessment of lung function in allegedly lung-healthy patients compared with ... Read more >>

Clin Respir J (The clinical respiratory journal)
[2019, 13(4):239-246]

Cited: 1 time

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