S3 transducer

Manufactured by Hewlett-Packard

Sourced in Japan

The S3 transducer is a precision measurement device designed by Hewlett-Packard. It is capable of converting physical quantities, such as pressure or temperature, into electrical signals for further analysis and monitoring.

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Lab products found in correlation

5500 ultrasound system, by Hewlett-Packard (3 mentions) Sonos 5500 ultrasound system, by Hewlett-Packard (2 mentions) N latex cystatin c, by Siemens (1 mentions) Bn 2, by Siemens (1 mentions)

5 protocols using s3 transducer

Cardiovascular Biomarkers in Aldosteronism

Cited 1 time

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The aldosterone concentration was measured by radioimmunoassay using a commercial kit (Aldosterone Maia Kit, Adaltis Italia S.P.A., Bologna, Italy)22 (link) and PRA was measured by the generation of angiotensin I in vitro using a commercially available radioimmunoassay kit (DiaSorin, Stillwater, MN, USA)19 (link). The amount of daily protein loss was defined as the urinary microalbumin-to-creatinine ratio (mg/mg); the cardiovascular marker cystatin C11 (link) was measured using a particle-enhanced immunonephelometric assay (N Latex Cystatin C; Siemens, Berlin, Germany) with a nephelometer (BNII; Siemens)23 (link). The pulse wave velocity (PWV) was measured with the subject in a supine position after a 15-min rest using an automatic waveform analyzer (Colin VP-2000, Omeron Inc., Japan), as previously reported24 (link).
A Hewlett-Packard Sonos 5500 ultrasound system equipped with an S3 transducer was used for Echocardiography, including two-dimensional, M-mode and Doppler ultrasound recordings. Left atrial diameter and left ventricular ejection fraction (M-mode) were measured via the parasternal long-axis view, as in our previous report25 (link). Left ventricular mass (LVM) index (LVMI) was calculated according to the method of Devereux et al.26 (link).

Wu V.C., Huang K.H., Peng K.Y., Tsai Y.C., Wu C.H., Wang S.M., Yang S.Y., Lin L.Y., Chang C.C., Lin Y.H., Lin S.L., Chu T.S, & Wu K.D. (2015). Prevalence and clinical correlates of somatic mutation in aldosterone producing adenoma-Taiwanese population. Scientific Reports, 5, 11396.

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Echocardiographic Measurement of Left Ventricular Mass

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All echocardiography was performed using a Hewlett-Packard 5500 ultrasound system with an S3 transducer (1.0-3.0 MHz). Transthoracic echocardiographic images were obtained in fundamental imaging modes. Two-dimensional, M-mode, Doppler and tissue Doppler ultrasonography were performed in each patient, and the dimensions of the chamber, wall thickness and left ventricular ejection fraction (M-mode) were measured according to the guidelines of the American Society of Echocardiography [25 (link)].
LVMI was derived from echocardiography according to the formula reported by Devereux and Reichek: [ LV mass = 1.04 x [(septal thickness + LV end-diastolic diameter + posterior wall thickness)³ - (LV end-diastolic diameter)³]-13.6] [26 (link)]. Predicted LVMI was estimated using a previously derived equation: predicted LVM = 55.37+ 6.64 x height ^2.7+ 0.64 x stroke work-18.07 x gender (where gender was scored as male=1 and female=2) [27 (link)]. Left ventricle volume was calculated using Tericholz's formula, and stroke work was calculated as systolic blood pressure (in mmHg) x stroke volume x 0.0144 [8 (link)]. Inappropriate LVMI or excessive LV mass compared to the predicted LVMI, was defined as: measured LVMI – predicted LVMI. LVH was defined according to Devereux's criteria: LVMI ≥ 134 g/m² in men and 110 g/m² in women [28 (link)].

Hung C.S., Wu X.M., Chen C.W., Chen Y.H., Wu V.C., Liao C.W., Chang Y.Y., Yen R.F., Lu C.C., Su M.Y., Liu K.L., Chang C.C., Liu L.Y., Wu K.D, & Lin Y.H. (2017). The relationship among cardiac structure, dietary salt and aldosterone in patients with primary aldosteronism. Oncotarget, 8(42), 73187-73197.

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Echocardiographic Evaluation of Cardiac Structure

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A Hewlett-Packard Sonos 5500 ultrasound system equipped with a S3 transducer was used. Echocardiography including two-dimensional, M-mode and Doppler ultrasound recordings were performed. Left ventricular dimension, interventricular septum and posterior wall thicknesses, and left ventricular ejection fraction (M-mode) were measured via a parasternal long axis view. Left ventricular mass index was calculated according to the method of Devereux et al.46 (link).

Lin Y.H., Wu V.C., Lo M.T., Wu X.M., Hung C.S., Wu K.D., Lin C., Ho Y.L., Stowasser M, & Peng C.K. (2015). Reversible heart rhythm complexity impairment in patients with primary aldosteronism. Scientific Reports, 5, 11249.

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Adrenalectomy Impact on Kidney Function

Cited 2 times

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General information about age, sex, body weight, BMI, systolic blood pressure
(SBP) and diastolic blood pressure (DBP) were recorded. We collected
biochemistry data about serum creatinine, potassium and osmolality, and urine
creatinine, potassium, albumin and osmolality. The estimated glomerular
filtration rate was calculated via the Chronic Kidney Disease
Epidemiology Collaboration formula. Transtubular potassium gradient was
calculated by using the formula: urine K/plasma K ÷ urine osmolality/plasma
osmolality. Cardiac echo was conducted before surgical treatment. All echocardiography^{36 (link)} was performed using a Hewlett-Packard 5500 ultrasound system with an S3
transducer (1.0–3.0 MHz). Two-dimensional, M-mode, Doppler and tissue Doppler
ultrasonography were performed in each patient, and the dimensions of the
chamber, wall thickness and left ventricular ejection fraction (M-mode) were
measured according to the guidelines of the American Society of Echocardiography.^{37 (link)}An eGFR of less than 60 ml/min/1.73 m² was defined as kidney function
impairment.^{7 (link),38 (link),39 (link)} Since declining eGFR became steady 6–12 months after
adrenalectomy was reported,^{7 (link),16 (link),40 (link)} we assessed post-operative
eGFR at 12 months after adrenalectomy as the primary endpoint.

Liao H.W., Wang S.M., Chan C.K., Lin Y.H., Lin P.C., Ho C.H., Liu Y.C., Chueh J.S, & Wu V.C. (2020). Transtubular potassium gradient predicts kidney function impairment after adrenalectomy in primary aldosteronism. Therapeutic Advances in Chronic Disease, 11, 2040622320944792.

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Echocardiographic Assessment of Diastolic Function

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Transthoracic echocardiography was performed using a Hewlett-Packard 5500 ultrasound system with an S3 transducer (1.0-3.0 MHz). Chamber dimension, wall thickness, left ventricular (LV) ejection fraction (M-mode), and peak mitral inflow velocity (E) were measured according to the guidelines of the American Society of Echocardiography. The peak mitral annular velocities (E′) were obtained by tissue Doppler imaging at the medial margins of the mitral annulus. The LV diastolic function was assessed using the E/E′ ratio, 23 and the LV mass was measured by echocardiography according to the formula of Devereux and Reichek. 24 The study complied with the Declaration of Helsinki and was approved by the Institutional Review Board of National Taiwan University Hospital (Taipei, Taiwan). Informed consent was obtained from all patients before inclusion in the study.

Hung C.S., Chou C.H., Liao C.W., Lin Y.T., Wu X.M., Chang Y.Y., Chen Y.H., Wu V.C., Su M.J., Ho Y.L., Chen M.F., Wu K.D, & Lin Y.H. (2016). Aldosterone Induces Tissue Inhibitor of Metalloproteinases-1 Expression and Further Contributes to Collagen Accumulation: From Clinical to Bench Studies. Hypertension (Dallas, Tex. : 1979), 67(6).

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