![]() Or extremely dull sounds are normally heard over solid areas such Sounds are low pitched, hollow sounds heard over normal lung tissue. Look at the following diagram that shows percussion notes on the posterior chest: Visualize the structures underneath as you proceed. Work from the top part of the chest downward, comparing sounds heard on both the right and left sides of the chest. Then, strike the finger placed on the patient's skin with the end of the middle finger of your dominant hand. Place the first part of the middle finger of your nondominant hand firmly on the patient's skin. Percussing the anterior chest is most easily done with the patient lying supine the patient should sit when percussing the posterior chest. Percussion helps to determine whether the underlying tissues are filled with air, fluid, or solid material. Percussion sets the chest wall and underlying tissues into motion, producing audible sounds and palpable vibrations. Just as lightly tapping on a container with your hands produces various sounds, so tapping on the chest wall produces sounds based on the amount of air in the lungs. "We believe, that using the know-how of different areas one can achieve greater results," say KTU researchers about interinstitutional and interdisciplinary cooperation.Percussion is an assessment technique which produces sounds by the examiner tapping on the patient's chest wall. For example, just recently, the researchers of KTU Institute of Mechatronics have created the frame for immobilising the Gamma Knife radiosurgery patients at the Clinics of the Lithuanian University of Health Sciences. The technology used in the above-described study is only one illustration of many successful working partnerships between engineers and physicians. Or, to alleviate the delivery of antibiotics to the inflamed areas?" says Prof J?r?nas. Maybe ultrasound can be used to activate certain medications. "For example, focused ultrasonic waves are used to break kidney stones, and to kill cancer cells. There are numerous applications for ultrasound in medical settings. Low-frequency ultrasound acoustic waves, penetrate deeper into the internal organs with a more uniform sound pressure distribution," explains Prof Jurenas. ![]() "Acoustic waves emitted by high-frequency ultrasound have a limited penetration depth into the body, so external tissues are more affected by high-frequency ultrasound than internal organs. In medicine, high-frequency ultrasound from 2 to 12 MHz is used for both diagnostic and therapeutic purposes. Partnership between medical and engineering scientists Keeping in mind the recent COVID-19 pandemic, we see a huge potential in exploring the possibilities of our technology further," says Prof Ostasevicius. "This means that low-frequency ultrasound can be potentially used for improving oxygen saturation in lungs for pulmonary hypertension patients. Their findings have been supported by an additional analysis made at the LSMU Laboratory of Molecular Cardiology. The scientists claim that the effect of ultrasound on the haemoglobin in RBCs was higher than its impact on platelet aggregation, which is responsible for blood clotting. The number of dissociated single RBCs per unit volume of blood decreases due to the spaces between them, compared to aggregates, which reduces blood viscosity and affects blood pressure," explains Prof Ostasevicius, the Head of KTU Institute of Mechatronics. "During exposure to low-frequency ultrasound, aggregated RBCs are dissociated into single RBCs, whose haemoglobin molecules interact with oxygen over the entire surface area of RBCs, which is larger than that of aggregated RBCs and improves oxygen saturation in blood. The research of the KTU team revealed that the ultrasound's impact on blood parameters is not limited to the platelet count - it also affects red blood cells (RBC), which can result in better oxygen circulation and lowered blood pressure. KTU professors Vytautas Ostasevicius and Vytautas Jurenas say that the ongoing research papers are related to blood platelet aggregation. The use of non-pharmaceutical treatment improves oxygen circulation and reduces blood pressure The calculations were made at the KTU Artificial Intelligence Centre. analysis of variance (ANOVA), non-parametric Kruskal-Wallis method and machine learning algorithms were applied. ![]() For the prediction of ultrasound exposure, artificial intelligence, i.e. The changes in 20 blood parameters were registered using the blood analysing equipment at the laboratories of the Lithuanian University of Health Sciences (LSMU). The samples were exposed to six different low-frequency ultrasound modes at the Institute of Mechatronics of Kaunas University of Technology (KTU). The research was undertaken on 300 blood samples collected from 42 pulmonary patients. ![]()
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