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Optoelectronic plethysmography method for evaluation of peripheral blood circulation
Published in Waldemar Wójcik, Sergii Pavlov, Maksat Kalimoldayev, Information Technology in Medical Diagnostics II, 2019
Y.O. Bezsmertnyi, H.V. Bezsmertna, A.S. Barylo, V.S. Pavlov, T.I. Kozlovska, A.M. Korobov, D. Harasim, D. Nuradilova
Various methods of optoelectronic diagnostics found their applications in many fields, eg medicine and industry processes (Kotyra 2014, Sawicki 2013). The method of optoelectronic plethysmography is based on the use of contactless sensors that do not compress the vessels and do not disturb the blood flow of the studied areas. The principle of the method is to the measure the reflected or passed through the biological object infrared radiation. It is used in most cases of vascular diseases for the objective assessment of the state and degree of violations of regional blood filling, vascular tone, to control the effectiveness of treatment used with subsequent laser and photon methods of vascular function recovery, for differential diagnosis of organic and functional vascular diseases. Particularly valuable information is given by symmetrical studies of the affected and unaffected vessels of the same patient and the dynamics of PPG under the influence of functional loads and during pharmacological tests (Romiti 2008, Soga 2012).
Chest wall volumes, diaphragmatic mobility, and functional capacity in patients with mucopolysaccharidoses
Published in Disability and Rehabilitation, 2023
Bárbara Bernardo Figueirêdo, Cyda Reinaux, Helen Fuzari, António Sarmento, Juliana Fernandes, Armèle Dornelas de Andrade
Although respiratory and cardiac complications are key drivers of mortality, and daily respiratory physiotherapy is recommended in these patients [3–6], current knowledge regarding respiratory function in MPS is based upon limited lung function and polysomnography data [5,6]. Although hepatosplenomegaly is suggested to elevate the diaphragm and alter its mechanical properties, diaphragm mobility is unkown in this population [6,11–14]. Therefore, we evaluated respiratory muscle strength, diaphragm mobility, functional capacity, and quality of life of MPS patients and compared them with healthy individuals paired by age and body mass index. Breathing pattern and chest wall and compartmental volumes (e.g., pulmonary ribcage, abdominal ribcage, and abdomen) were also assessed using optoelectronic plethysmography in two different positions.
Acute effects of expiratory positive airway pressure on exercise tolerance in patients with COPD
Published in Physiotherapy Theory and Practice, 2022
Hugo L. Pereira, Danielle S. Vieira, Raquel R. Britto, Lailane S. Da Silva, Giane A. Ribeiro-Samora, Bianca L. Carmona, Guilherme A. Fregonezi, Verônica F. Parreira
During all the three constant cycle ergometer exercise tests, the breathing pattern was registered by optoelectronic plethysmography (OEP). The OEP system (BTS Bioengineering, Italy) is used to measure changes in chest wall volumes at rest and during the exercise. It is a valid and reliable noninvasive system that allows continuous measurements of chest wall volumes and its three compartments (i.e. pulmonary rib cage, abdominal rib cage, and abdomen). Eighty-nine markers were placed on patient’s chest wall in the present study (Massaroni et al, 2017). Patients maintained the arms supported in a specific structure with comfortable shoulder and elbow angles during exercise to avoid excessive lifting of the upper limbs. Dyspnea and leg discomfort were assessed using the modified Borg scale before and at the end of the exercise (Borg, 1982).
Effects of daily inspiratory muscle training on respiratory muscle strength and chest wall regional volumes in haemodialysis patients: a randomised clinical trial
Published in Disability and Rehabilitation, 2019
Ana Irene Carlos de Medeiros, Daniella Cunha Brandão, Renata Janaína Pereira de Souza, Helen Kerlen Bastos Fuzari, Carlos Eduardo Santos Rêgo Barros, Jefferson Belarmino Nunes Barbosa, Jéssica Costa Leite, Frederico Castelo Branco Cavalcanti, Arméle Dornelas de Andrade, Patrícia Érika de Melo Marinho
Optoelectronic plethysmography (BTS Bioengineering®, Milan, Italy) was performed with participants sitting on a stretcher with their spine erect, knees flexed, and feet supported. Eighty-nine reflex markers were distributed and fixed in an anatomical position in the thoracoabdominal region [20], arranged as follows: 37 anterior markers, 10 lateral markers, and 42 posterior markers. Eight cameras arranged in front and behind the patient captured the markers’ reflexes as they moved. The images were transferred to a computer, where a thoracic surface model was developed separating pulmonary rib cage, abdominal rib cage, and abdomen. A 3-min breathing-at-rest period was recorded for current tidal volume, and three deep inspirations were then requested for evaluating inspiratory capacity.