Search Results - "Feiner, John R"

Factors Affecting the Performance of 5 Cerebral Oximeters During Hypoxia in Healthy Volunteers by Bickler, Philip E., Feiner, John R., Rollins, Mark D.

“…BACKGROUND:Cerebral oximetry is a noninvasive optical technology that measures frontal cortex blood hemoglobin-oxygen saturation. Commercially available…”
Get full text

Four Types of Pulse Oximeters Accurately Detect Hypoxia during Low Perfusion and Motion by Louie, Aaron, Feiner, John R, Bickler, Philip E, Rhodes, Laura, Bernstein, Michael, Lucero, Jennifer

“…BACKGROUND:Pulse oximeter performance is degraded by motion artifacts and low perfusion. Manufacturers developed algorithms to improve instrument performance…”
Get full text

Dark Skin Decreases the Accuracy of Pulse Oximeters at Low Oxygen Saturation: The Effects of Oximeter Probe Type and Gender by Feiner, John R., Severinghaus, John W., Bickler, Philip E.

“…Pulse oximetry may overestimate arterial oxyhemoglobin saturation (Sao2) at low Sao2 levels in individuals with darkly pigmented skin, but other factors, such…”
Get full text

Effects of skin pigmentation on pulse oximeter accuracy at low saturation by BICKLER, Philip E, FEINER, John R, SEVERINGHAUS, John W

“…It is uncertain whether skin pigmentation affects pulse oximeter accuracy at low HbO2 saturation. The accuracy of finger pulse oximeters during stable, plateau…”
Get full text

Comparison of Transcranial Doppler and Ultrasound-Tagged Near Infrared Spectroscopy for Measuring Relative Changes in Cerebral Blood Flow in Human Subjects by Lipnick, Michael S, Cahill, Elizabeth A, Feiner, John R, Bickler, Philip E

“…BACKGROUND:Currently, no reliable method exists for continuous, noninvasive measurements of absolute cerebral blood flow (CBF). We sought to determine how…”
Get full text

Improved Accuracy of Methemoglobin Detection by Pulse CO-Oximetry During Hypoxia by Feiner, John R., Bickler, Philip E.

“…Methemoglobin in the blood cannot be detected by conventional pulse oximetry and may bias the oximeter's estimate (Spo(2)) of the true arterial functional…”
Get full text

Accuracy of Methemoglobin Detection by Pulse CO-Oximetry During Hypoxia by Feiner, John R., Bickler, Philip E., Mannheimer, Paul D.

“…Methemoglobin in the blood cannot be detected by conventional pulse oximetry, although it can bias the oximeter's estimate (Spo2) of the true arterial…”
Get full text

Accuracy of Carboxyhemoglobin Detection by Pulse CO-Oximetry During Hypoxemia by Feiner, John R., Rollins, Mark D., Sall, Jeffrey W., Eilers, Helge, Au, Paul, Bickler, Philip E.

“…BACKGROUND:Carbon monoxide poisoning is a significant problem in most countries, and a reliable method of quick diagnosis would greatly improve patient care…”
Get full text

High Oxygen Partial Pressure Decreases Anemia-induced Heart Rate Increase Equivalent to Transfusion by FEINER, John R, FINLAY-MORREALE, Heather E, TOY, Pearl, LIEBERMAN, Jeremy A, VIELE, Maurene K, HOPF, Harriet W, WEISKOPF, Richard B

“…Anemia is associated with morbidity and mortality and frequently leads to transfusion of erythrocytes. The authors sought to directly compare the effect of…”
Get full text

“Silent” Presentation of Hypoxemia and Cardiorespiratory Compensation in COVID-19 by Bickler, Philip E., Feiner, John R., Lipnick, Michael S., McKleroy, William

“…Severe hypoxemia presents variably, and sometimes silently, without subjective complaints of dyspnea. The adequacy of cardiovascular compensation for oxygen…”
Get full text

Evaluating Pulmonary Function: An Assessment of PaO2/FIO2 by Feiner, John R, Weiskopf, Richard B

“…OBJECTIVES:PaO2/FIO2 is used commonly for diagnosis of lung injury (acute respiratory distress syndrome and transfusion-related acute lung injury), for…”
Get full text

Perioperative Mortality, 2010 to 2014: A Retrospective Cohort Study Using the National Anesthesia Clinical Outcomes Registry by Whitlock, Elizabeth L, Feiner, John R, Chen, Lee-Lynn

“…The National Anesthesia Clinical Outcomes Registry collects demographic and outcome data from anesthesia cases, with the goal of improving safety and quality…”
Get full text

Pediatric Distraction on Induction of Anesthesia With Virtual Reality and Perioperative Anxiolysis: A Randomized Controlled Trial by Jung, Michael J., Libaw, Justin S., Ma, Kevin, Whitlock, Elizabeth L., Feiner, John R., Sinskey, Jina L.

“…BACKGROUND:Perioperative pediatric anxiety is common and can have a negative psychological impact on children undergoing surgery and anesthesia. Studies have…”
Get full text

Pulse Oximeter Performance, Racial Inequity, and the Work Ahead by Okunlola, Olubunmi E, Lipnick, Michael S, Batchelder, Paul B, Bernstein, Michael, Feiner, John R, Bickler, Philip E

“…It has long been known that many pulse oximeters function less accurately in patients with darker skin. Reasons for this observation are incompletely…”
Get full text

Low Perfusion and Missed Diagnosis of Hypoxemia by Pulse Oximetry in Darkly Pigmented Skin: A Prospective Study by Gudelunas, M Koa, Lipnick, Michael, Hendrickson, Carolyn, Vanderburg, Sky, Okunlola, Bunmi, Auchus, Isabella, Feiner, John R, Bickler, Philip E

“…Retrospective clinical trials of pulse oximeter accuracy report more frequent missed diagnoses of hypoxemia in hospitalized Black patients than White patients,…”
Get full text

The Accuracy of 6 Inexpensive Pulse Oximeters Not Cleared by the Food and Drug Administration: The Possible Global Public Health Implications by Lipnick, Michael S., Feiner, John R., Au, Paul, Bernstein, Michael, Bickler, Philip E.

“…BACKGROUND:Universal access to pulse oximetry worldwide is often limited by cost and has substantial public health consequences. Low-cost pulse oximeters have…”
Get full text

Pupillary Effects of High-dose Opioid Quantified with Infrared Pupillometry by Rollins, Mark D, Feiner, John R, Lee, Jessica M, Shah, Sameer, Larson, Merlin

“…BACKGROUND:The pupillary light reflex is a critical component of the neurologic examination, yet whether it is present, depressed, or absent is unknown in…”
Get full text

Effects of Changes in Arterial Carbon Dioxide and Oxygen Partial Pressures on Cerebral Oximeter Performance by Schober, Andrew, Feiner, John R, Bickler, Philip E, Rollins, Mark D

“…BACKGROUND:Cerebral oximetry (cerebral oxygen saturation; ScO2) is used to noninvasively monitor cerebral oxygenation. ScO2 readings are based on the fraction…”
Get full text

Reducing Volatile Anesthetic Waste Using a Commercial Electronic Health Record Clinical Decision Support Tool to Lower Fresh Gas Flows by Olmos, Andrea V., Robinowitz, David, Feiner, John R., Chen, Catherine L., Gandhi, Seema

“…Volatile anesthetic consumption can be reduced by minimizing excessive fresh gas flows (FGFs). Currently, it is unknown whether decision support tools embedded…”
Get full text

Effects of Acute, Profound Hypoxia on Healthy Humans: Implications for Safety of Tests Evaluating Pulse Oximetry or Tissue Oximetry Performance by Bickler, Philip E, Feiner, John R, Lipnick, Michael S, Batchelder, Paul, MacLeod, David B, Severinghaus, John W

“…Extended periods of oxygen deprivation can produce acidosis, inflammation, energy failure, cell stress, or cell death. However, brief profound hypoxia (here…”
Get full text