التفاصيل البيبلوغرافية
| العنوان: |
MEASUREMENT OF BASIC HEMODYNAMICS DURING MULTIPOST TRANSCUTANEOUS EXTERNAL EAR STIMULATION: A TWO-CASE STUDY. |
| Alternate Title: |
MERITEV OSNOVNE HEMODINAMIKE MED VEČTOČKOVNO TRANSKUTANO STIMULACIJO ZUNANJEGA UŠESA: ŠTUDIJA NA DVEH OSEBAH. (Slovenian) |
| المؤلفون: |
Rozman, Janez, Miklavec, Katarina, Rozman, Ingrid, Emri, Anja, Mirkovič, Tomislav, Ribarič, Samo |
| المصدر: |
Materials & Technologies / Materiali in Tehnologije; May/Jun2024, Vol. 58 Issue 3, p309-319, 11p |
| مصطلحات موضوعية: |
HEMODYNAMICS, TRANSCUTANEOUS blood gas monitoring, PULSE oximeters, ULTRASONIC imaging, STETHOSCOPES |
| Abstract (English): |
The objectives of the investigation were to assess the short-term responses of the cardio-vascular system on the multipost transcutaneous stimulation (tANS) of the external ear (EE). The scope was to measure the forefinger photopleths (FPPG), toe photopleths (TPPG), aortic phonocardiogram (APCG), mitral phonocardiogram (MPCG) and brachial arterial blood pressure (BABP), assuming that they could be altered with the tANS. For the tANS, stimulator, two silicone ear plugs with four platinum electrodes each, and a large common electrode (CE), were used. Trials were carried out with two female volunteers, aged 25 years and 28 years. To capture the heart sounds, two customized electronic stethoscopes (transducers) were used. BABP was measured using a pressure transducer and blood-pressure appliance. To measure the FPPGs, a pulse oximeter and SpO2 finger clip were used. To measure the TPPGs, another pulse oximeter and customized SpO2 foot clip was used. Signals were gathered using a high-performance data-acquisition system. An offline analysis was made just before and just after the start of the tANS. To record the pulsations in the right brachial artery, the 2D ultrasound mode (B) of the ultrasound device was used before and during the tANS. Then, diagrams showing the vein cross-sectional area overtime were constructed. The results show that vascular time intervals between heart sounds SI and S2, captured as APCG and systolic peaks of the FPPG in the second volunteer, were slightly larger during the separate tANS of the left white (LW) and (RW) EE post than before the tANS. Furthermore, vascular time intervals between the heart sounds SI and S2, captured as MPCG and systolic peaks of the TPPG in the second volunteer, were slightly smaller during the separate tANS of LW and RW EE post than before the tANS. Finally, tANS of the LW post elicited a slightly lower heart rate than the one measured when LW was not stimulated. In contrast, the tANS of the RW post elicited a slightly higher heart rate than the one measured when RW was not stimulated. It was also shown that the pattern of the vein cross-sectional area over time with tANS was different compared to both the FPPG and TPPG. [ABSTRACT FROM AUTHOR] |
| Abstract (Slovenian): |
Cilj raziskave je bil ovrednotiti kratkoročne odzive srčno-žilnega sistema na večtočkovno transkutano stimulacijo (tANS) zunanjega ušesa (EE). Raziskava je obsegala meritve fotopletismogramov na palcu desne roke (FPPG), fotopletismogramov na palcu leve noge (TPPG), aortnih fonokardiogramov (APCG), mitralnih fonokardiogramov (MPCG) in brahialnega arterijskaga krvnega tlaka (BABP) predpostavljajoč, da se bodo spremenili vsled tANS. Za tANS so bili uporabljeni stimulator, dva ušesna čepka iz silikona s po štirimi platinastimi ektrodami in velika skupna elektroda (CE). Meritve so bile opravljene na dveh prostovoljkah starih 25 let in 28 let. Za zajemanje zvokov srca sta bila uporabljena dva posebej izdelana elektronska stetoskopa (transducer). BABP pa je bil merjen s pretvornikom tlaka in merilcem krvnega tlaka. Za meritve FPPG je bil uporabljen pulzni oksimeter z naprstnim SpO2 senzorjem. Za meritve TPPG pa je bil uporabljen drugi pulzni oksimeter s posebnim SpO2 senzorjem na nožnem palcu. Signali so bili digitalizirani z zmogljivim sistemom za zajemanje podatkov. Kasnejša analiza podatkov je bila narejena tik pred začetkom in takoj po končani tANS. Za beleženje pulziranja desne brahijalne arterije je bil uporabljen 2D ultrazvočni način (B) ultrazvočne naprave in sicer pred in med tANS. Nato sta bila konstruirana diagrama, ki sta prikazovala presek arterije v odvisnosti od časa. Rezultati so pokazali, da so bili časovni intervali med zvoki srca Sl in S2 zajeti kot APCG in sistoličnimi vrhi pri drugi prostovoljki, rahlo daljši tako med tANS levega belega (LW) kot tudi desnega (RW) mesta na EE, kot pred tANS. Nadalje so bili časovni intervali med zvoki srca Sl in S2 zajeti kot MPCG in sistoličnimi vrhi pri isti prostovoljki, rahlo krajši tako med tANS levega belega (LW) kot tudi desnega (RW) mesta na EE, kot pred tANS. Razen navedenega je prišlo v času tANS mesta LW do rahlega zmanjšanja frekvenc srčnega utripa kot je bil v času brez tANS. Nasprotno pa je prišlo v času tANS mesta RW do rahlega povečanja ritma srca kot je bil v času brez tANS. Rezultati so tudi pokazali, daje bil časovni potek sprememb površine prereza arterije v odvisnosti od časa med tANS različen tako od poteka FPPG kot tudi od poteka TPPG. [ABSTRACT FROM AUTHOR] |
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