Search Results - "Shelley, Kirk H."

Photoplethysmography: Beyond the Calculation of Arterial Oxygen Saturation and Heart Rate by Shelley, Kirk H.

“…In this article, I examine the source of the photoplethysmograph (PPG), as well as methods of investigation, with an emphasize on amplitude, rhythm, and pulse…”
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Photoplethysmography by Alian, Aymen A., M.D, Shelley, Kirk H., M.D., Ph.D

“…The photoplethysmographic (PPG) waveform, also known as the pulse oximeter waveform, is one of the most commonly displayed clinical waveforms. First described…”
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What Is the Best Site for Measuring the Effect of Ventilation on the Pulse Oximeter Waveform? by Shelley, Kirk H., Jablonka, Denis H., Awad, Aymen A., Stout, Robert G., Rezkanna, Hoda, Silverman, David G.

“…The cardiac pulse is the predominant feature of the pulse oximeter (plethysmographic) waveform. Less obvious is the effect of ventilation on the waveform…”
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Respiratory physiology and the impact of different modes of ventilation on the photoplethysmographic waveform by Alian, Aymen A, Shelley, Kirk H

“…The photoplethysmographic waveform sits at the core of the most used, and arguably the most important, clinical monitor, the pulse oximeter. Interestingly, the…”
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The Effect of Venous Pulsation on the Forehead Pulse Oximeter Wave Form as a Possible Source of Error in Spo2 Calculation by Shelley, Kirk H., Tamai, Doris, Jablonka, Denis, Gesquiere, Michael, Stout, Robert G., Silverman, David G.

“…Reflective forehead pulse oximeter sensors have recently been introduced into clinical practice. They reportedly have the advantage of faster response times…”
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Inaccuracy of pulse oximetry with dark skin pigmentation: clinical implications and need for improvement by Kyriacou, Panicos A, Charlton, Peter H, Al-Halawani, Raghda, Shelley, Kirk H

“…Recent reports highlight potential inaccuracies of pulse oximetry in patients with various degrees of skin pigmentation. We summarise the literature, provide…”
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Impact of central hypovolemia on photoplethysmographic waveform parameters in healthy volunteers part 2: frequency domain analysis by Alian, Aymen A., Galante, Nicholas J., Stachenfeld, Nina S., Silverman, David G., Shelley, Kirk H.

“…Objective The photoplethysmographic (PPG) waveforms are modulated by the respiratory, cardiac and autonomic nervous system. Lower body negative pressure (LBNP)…”
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The relationship between the photoplethysmographic waveform and systemic vascular resistance by AWAD, Aymen A, HADDADIN, Ala S, TANTAWY, Hossam, BADR, Tarek M, STOUT, Robert G, SILVERMAN, David G, SHELLEY, Kirk H

“…The objective of this study was to determine the relationship between systemic vascular resistance (SVR), finger & ear photoplethysmographic measurements in 14…”
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Using the ear photoplethysmographic waveform as an early indicator of central hypovolemia in healthy volunteers utilizing LBNP induced hypovolemia model by Eid, Anna-Maria, Elgamal, Mohamed, Gonzalez-Fiol, Antonio, Shelley, Kirk H, Wu, Hau-Tieng, Alian, Aymen Awad

“… To study the photoplethysmographic (PPG) waveforms of different locations (ear and finger) during lower body negative pressure (LBNP) induced hypovolemia…”
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Signal quality assessment of peripheral venous pressure by Chiu, Neng-Tai, Chuang, Beau, Anakmeteeprugsa, Suthawan, Shelley, Kirk H., Alian, Aymen Awad, Wu, Hau-Tieng

“…Develop a signal quality index (SQI) for the widely available peripheral venous pressure waveform (PVP). We focus on the quality of the cardiac component in…”
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Trends and Challenges in Clinical Monitoring: Papers From the 2015 IAMPOV Symposium by Bickler, Philip E, Cannesson, Maxime, Shelley, Kirk H

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Disclosures, What Is Necessary and Sufficient? by Shelley, Kirk H., Barker, Steven J.

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Estimation of Respiratory Rate From ECG, Photoplethysmogram, and Piezoelectric Pulse Transducer Signals: A Comparative Study of Time-Frequency Methods by Dash, Shishir, Shelley, Kirk H., Silverman, David G., Chon, Ki H.

“…We compare the performance of two different time-frequency-based breathing rate (BR) detection algorithms when used on three different physiological signals:…”
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Is pulse oximetry an essential tool or just another distraction? The role of the pulse oximeter in modern anesthesia care by Shah, Amit, Shelley, Kirk H.

“…Since the discovery of anesthetic agents, patient monitoring has been considered one of the core responsibilities of the anesthesiologist. As depicted in…”
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Patients and jargon: are we speaking the same language? by Fields, Aaron M., MD, Freiberg, Craig S., MD, Fickenscher, Alexandra, MPH, Shelley, Kirk H., MD, PhD

“…Abstract Study Objective To assess the ability of surgical patients to understand words commonly used during the anesthetic preoperative visit. Design…”
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Comparing the effect of arginine vasopressin on ear and finger photoplethysmography by Jablonka, Denis H., MD, Awad, Aymen A., MD, Stout, Robert G., MD, Silverman, David G., MD, Shelley, Kirk H., MD, PhD

“…Abstract Study Objective To test whether the relative insensitivity of craniofacial vessels to catecholamines differs in response to arginine vasopressin…”
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Role of the Photoplethysmographic Waveform in the Care of High-risk Surgical Patients by Shelley, Kirk H, Alian, Aymen A, Shelley, Adam J

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Impact of lower body negative pressure induced hypovolemia on peripheral venous pressure waveform parameters in healthy volunteers by Alian, Aymen A, Galante, Nicholas J, Stachenfeld, Nina S, Silverman, David G, Shelley, Kirk H

“…Lower body negative pressure (LBNP) creates a reversible hypovolemia by sequestrating blood volume in the lower extremities. This study sought to examine the…”
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A Novel Approach Using Time-Frequency Analysis of Pulse-Oximeter Data to Detect Progressive Hypovolemia in Spontaneously Breathing Healthy Subjects by Selvaraj, Nandakumar, Shelley, Kirk H., Silverman, David G., Stachenfeld, Nina, Galante, Nicholas, Florian, John P., Mendelson, Yitzhak, Chon, Ki H.

“…Accurate and early detection of blood volume loss would greatly improve intraoperative and trauma care. This study has attempted to determine early diagnostic…”
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Using Time-Frequency Analysis of the Photoplethysmographic Waveform to Detect the Withdrawal of 900 mL of Blood by Scully, Christopher G., Selvaraj, Nandakumar, Romberg, Frederick W., Wardhan, Richa, Ryan, John, Florian, John P., Silverman, David G., Shelley, Kirk H., Chon, Ki H.

“…We designed this study to determine if 900 mL of blood withdrawal during spontaneous breathing in healthy volunteers could be detected by examining the…”
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