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Kim J, Choi J, Hong Y, Han Y, Huynh T, Tran KM, Kwak HJ, Seo S, Heo C, Lee H. Indoor-Light-Activated Blue TiO 2-Molecule-WO 3 Visible Photocatalyst for Antibacterial Performance against Escherichia coli. ACS Infect Dis 2024. [PMID: 38738652 DOI: 10.1021/acsinfecdis.4c00126] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/14/2024]
Abstract
Currently used visible light catalysts either operate with high-power light sources or require prolonged periods of time for catalytic reactions. This presents a limitation regarding facile application in indoor environments and spaces frequented by the public. Furthermore, this gives rise to elevated power consumption. Here, we enhance photocatalytic performance with blue TiO2 and WO3 complexes covalently coupled through an organic molecule, 3-mercaptopropionic acid, under indoor light. Antibacterial experiments against 108 CFU/mL Escherichia coli (E. coli) suspensions were conducted under indoor light exposure conditions. They showed a sterilization effect of almost 90% within 70 min and nearly 100% after 110 min. The complex generates reactive oxygen species (ROS), such as •OH and O2•-, under natural air conditions. We also showed that h+ and •OH are important for sterilizing E. coli using common scavengers. This research highlights the potential of these complexes to generate ROS, effectively playing a crucial role in antibacterial effects under indoor light.
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Affiliation(s)
- Joosung Kim
- Department of Energy Science, Sungkyunkwan University, Suwon 16419, South Korea
- Centre for Integrated Nanostructure Physics (CINAP), Sungkyunkwan University, Suwon 16419, South Korea
| | - Jungsue Choi
- Department of Chemistry, Sungkyunkwan University, Suwon 16419, South Korea
| | - Yeseul Hong
- Department of Chemistry, Sungkyunkwan University, Suwon 16419, South Korea
- Centre for Integrated Nanostructure Physics (CINAP), Sungkyunkwan University, Suwon 16419, South Korea
| | - Yeonsu Han
- Department of Chemistry, Sungkyunkwan University, Suwon 16419, South Korea
| | - Thuy Huynh
- Department of Biophysics, Sungkyunkwan University, Suwon 16419, South Korea
- Institute of Quantum Biophysics (IQB), Suwon 16419, South Korea
| | - Kim My Tran
- Department of Chemistry, Sungkyunkwan University, Suwon 16419, South Korea
- Centre for Integrated Nanostructure Physics (CINAP), Sungkyunkwan University, Suwon 16419, South Korea
| | - Hee-Jin Kwak
- Centre for Integrated Nanostructure Physics (CINAP), Sungkyunkwan University, Suwon 16419, South Korea
- Institute of Basic Science (IBS), Suwon 16419, South Korea
| | - Sohyeon Seo
- Department of Chemistry, Sungkyunkwan University, Suwon 16419, South Korea
- Creative Research Institute (CRI), Sungkyunkwan University, Suwon 16419, South Korea
| | - Chaejeong Heo
- Department of Biophysics, Sungkyunkwan University, Suwon 16419, South Korea
- Centre for Integrated Nanostructure Physics (CINAP), Sungkyunkwan University, Suwon 16419, South Korea
- Institute of Basic Science (IBS), Suwon 16419, South Korea
- Institute of Quantum Biophysics (IQB), Suwon 16419, South Korea
| | - Hyoyoung Lee
- Department of Chemistry, Sungkyunkwan University, Suwon 16419, South Korea
- Centre for Integrated Nanostructure Physics (CINAP), Sungkyunkwan University, Suwon 16419, South Korea
- Institute of Basic Science (IBS), Suwon 16419, South Korea
- Institute of Quantum Biophysics (IQB), Suwon 16419, South Korea
- Creative Research Institute (CRI), Sungkyunkwan University, Suwon 16419, South Korea
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Tran KM, Shim J, Lee HK, Seo S, Haldar S, Lee H. Ultrasensitive Carbon Monoxide Gas Sensor at Room Temperature Using Fluorine-Graphdiyne. ACS Appl Mater Interfaces 2023; 15:56084-56094. [PMID: 38058106 DOI: 10.1021/acsami.3c11191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/08/2023]
Abstract
Currently, most carbon monoxide (CO) gas sensors work at high temperatures of over 150 °C. Developing CO gas sensors that operate at room temperature is challenging because of the sensitivity trade-offs. Here, we report an ultrasensitive CO gas sensor at room temperature using fluorine-graphdiyne (F-GDY) in which electrons are increased by light. The GDY films used as channels of field-effect transistors were prepared by using chemical vapor deposition and were characterized by using various spectroscopic techniques. With exposure to UV light, F-GDY showed a more efficient photodoping effect than hydrogen-graphdiyne (H-GDY), resulting in a larger negative shift in the charge neutral point (CNP) to form an n-type semiconductor and an increase in the Fermi level from -5.27 to -5.01 eV. Upon CO exposure, the negatively shifted CNP moved toward a positive shift, and the electrical current decreased, indicating electron transfer from photodoped GDYs to CO. Dynamic sensing experiments demonstrated that negatively charged F-GDY is remarkably sensitive to an electron-deficient CO gas, even with a low concentration of 200 parts per billion. This work provides a promising solution for enhancing the CO sensitivity at room temperature and expanding the application of GDYs in electronic devices.
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Affiliation(s)
- Kim My Tran
- Department of Chemistry, Sungkyunkwan University, Suwon 440-746, Republic of Korea
| | - Junoh Shim
- Department of Advanced Materials and Science Engineering, Sungkyunkwan University, Suwon 440-746, Republic of Korea
| | - Hyung-Kun Lee
- Electronics & Telecommunications Research Institute (ETRI), Daejeon 34129, Republic of Korea
| | - Sohyeon Seo
- Creative Research Institute (CRI), Sungkyunkwan University, Suwon 440-746, Republic of Korea
| | - Surajit Haldar
- Department of Chemistry, Sungkyunkwan University, Suwon 440-746, Republic of Korea
| | - Hyoyoung Lee
- Department of Chemistry, Sungkyunkwan University, Suwon 440-746, Republic of Korea
- Creative Research Institute (CRI), Sungkyunkwan University, Suwon 440-746, Republic of Korea
- Institute of Quantum Biophysics, Sungkyunkwan University, Suwon 440-746, Republic of Korea
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Do DP, Hong C, Bui VQ, Pham TH, Seo S, Do VD, Phan TL, Tran KM, Haldar S, Ahn B, Lim SC, Yu WJ, Kim S, Kim J, Lee H. Highly Efficient Van Der Waals Heterojunction on Graphdiyne toward the High-Performance Photodetector. Adv Sci (Weinh) 2023; 10:e2300925. [PMID: 37424035 PMCID: PMC10477878 DOI: 10.1002/advs.202300925] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 06/04/2023] [Indexed: 07/11/2023]
Abstract
Graphdiyne (GDY), a new 2D material, has recently proven excellent performance in photodetector applications due to its direct bandgap and high mobility. Different from the zero-gap of graphene, these preeminent properties made GDY emerge as a rising star for solving the bottleneck of graphene-based inefficient heterojunction. Herein, a highly effective graphdiyne/molybdenum (GDY/MoS2 ) type-II heterojunction in a charge separation is reported toward a high-performance photodetector. Characterized by robust electron repulsion of alkyne-rich skeleton, the GDY based junction facilitates the effective electron-hole pairs separation and transfer. This results in significant suppression of Auger recombination up to six times at the GDY/MoS2 interface compared with the pristine materials owing to an ultrafast hot hole transfer from MoS2 to GDY. GDY/MoS2 device demonstrates notable photovoltaic behavior with a short-circuit current of -1.3 × 10-5 A and a large open-circuit voltage of 0.23 V under visible irradiation. As a positive-charge-attracting magnet, under illumination, alkyne-rich framework induces positive photogating effect on the neighboring MoS2 , further enhancing photocurrent. Consequently, the device exhibits broadband detection (453-1064 nm) with a maximum responsivity of 78.5 A W-1 and a high speed of 50 µs. Results open up a new promising strategy using GDY toward effective junction for future optoelectronic applications.
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Affiliation(s)
- Dinh Phuc Do
- Department of ChemistrySungkyunkwan UniversitySuwon16419Republic of Korea
| | - Chengyun Hong
- Department of Energy ScienceSungkyunkwan UniversitySuwon16419Republic of Korea
| | - Viet Q Bui
- Advanced Institute of Science and TechnologyThe University of Danang41 Le DuanDanang92026Vietnam
| | - Thi Hue Pham
- Advanced Institute of Science and TechnologyThe University of Danang41 Le DuanDanang92026Vietnam
| | - Sohyeon Seo
- Department of ChemistrySungkyunkwan UniversitySuwon16419Republic of Korea
- Creative Research InstituteSungkyunkwan UniversitySuwon16419Republic of Korea
| | - Van Dam Do
- Department of Electrical and Computer EngineeringSungkyunkwan UniversitySuwon16419Republic of Korea
| | - Thanh Luan Phan
- Department of Electrical and Computer EngineeringSungkyunkwan UniversitySuwon16419Republic of Korea
| | - Kim My Tran
- Department of ChemistrySungkyunkwan UniversitySuwon16419Republic of Korea
| | - Surajit Haldar
- Department of ChemistrySungkyunkwan UniversitySuwon16419Republic of Korea
| | - Byung‐wook Ahn
- Department of Energy ScienceSungkyunkwan UniversitySuwon16419Republic of Korea
| | - Seong Chu Lim
- Department of Energy ScienceSungkyunkwan UniversitySuwon16419Republic of Korea
| | - Woo Jong Yu
- Department of Electrical and Computer EngineeringSungkyunkwan UniversitySuwon16419Republic of Korea
| | - Seong‐Gon Kim
- Department of Physics and Astronomy and Center for Computational SciencesMississippi State UniversityMississippi StateMS39762USA
| | - Ji‐Hee Kim
- Department of Energy ScienceSungkyunkwan UniversitySuwon16419Republic of Korea
| | - Hyoyoung Lee
- Department of ChemistrySungkyunkwan UniversitySuwon16419Republic of Korea
- Creative Research InstituteSungkyunkwan UniversitySuwon16419Republic of Korea
- Department of BiophysicsSungkyunkwan UniversitySuwon16419Republic of Korea
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Tran KM, Cook JD, Blair EE, Peppard PE, Plante DT. 0168 Effects of School Night Sleep Duration and Circadian Preference on Student Tardiness: An Investigation in a Middle-School Aged Sample. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Introduction
Sleep and circadian factors play an important role in school attendance, academic performance, and daytime behaviors among adolescents. This investigation assessed school night sleep duration (SNSD) and circadian preference (CP) association with first period tardies (FPT) using a middle-aged sample from the Madison (Wisconsin) Metropolitan School District (MMSD), prior to implementation of a planned district-wide delay in middle school start times.
Methods
4,175 middle-school aged students from 12 MMSD schools completed a sleep survey, which included SNSD and a validated 4-level measure of CP. Self-reported SNSD between 4-and-12 hours served as final sample inclusion criterion. Mixed effects modeling was employed with students nested within school. Linear regression determined SNSD and CP effect on student tardiness. Individual, year-long FPT served as outcome variable. Inclusion of SNSD quadratic term was not statistically indicated. Full model covariates included age, sex, race, parent educational level, homelessness, free and reduced lunch, and special education status.
Results
Final sample included 3,860 students. Univariate regression determined a significant CP association with FPT [β=1.20, 95% CI (0.54, 1.86), F(1,10.41)=13.7, p=0.004), but not SNSD [β=-0.31, 95% CI (-0.70, -0.09), F(1,10.21)=2.5, p=0.14]. SNSD and CP interaction was not significant. CP significance was maintained in the full model [β=1.24, 95% CI (-0.70, -0.09), F(1,11.21)=13.7, p=0.004]. Evening preference associated with 3.72 more FPT, relative to morning preference.
Conclusion
Results suggest evening preference is associated with increased risk of tardiness among middle school students. Future research that examines the relationships between delayed school start times, circadian preference, and impact on school tardiness is indicated.
Support
This research was generously supported by a grant from the Madison Education Partnership (MEP).
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Affiliation(s)
- K M Tran
- University of Wisconsin School of Medicine and Public Health, Department of Psychiatry, Madison, WI, Madison, WI
| | - J D Cook
- University of Wisconsin School of Medicine and Public Health, Department of Psychiatry, Madison, WI, Madison, WI
- University of Wisconsin, Department of Psychology, Madison, WI, Madison, WI
| | - E E Blair
- University of Wisconsin-Whitewater, Department of Educational Foundations, Whitewater, WI, Whitewater, WI
| | - P E Peppard
- University of Wisconsin School of Medicine and Public Health, Department of Population Health Sciences, Madison, WI, Madison, WI
| | - D T Plante
- University of Wisconsin School of Medicine and Public Health, Department of Psychiatry, Madison, WI, Madison, WI
- University of Wisconsin, Department of Psychology, Madison, WI, Madison, WI
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Cook JD, Peppard PE, Blair EE, Tran KM, Plante DT. 0267 School Night Sleep Duration Effect on Risk for In-and-Out of School Suspensions: An Investigation in a Middle-School Aged Sample. Sleep 2020. [DOI: 10.1093/sleep/zsaa056.265] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Introduction
Sleep plays an important role in adolescent education and development. Sleep impacts student school attendance, academic performance, and daytime behaviors. There has been limited investigation into the impact on sleep duration (SD) on school suspension risk. Given the growing public health and policy focus on altering school start times to increase SD, this study assessed SD association with school suspension risk using a middle-school aged sample from the Madison (Wisconsin) Metropolitan School District (MMSD), prior to implementation of a planned district-wide delay in middle school start times.
Methods
4,175 middle-school aged students from 12 MMSD schools completed a sleep survey, which included school-night SD (SNSD). Self-reported SNSD between 4-and-12 hours served as criterion for inclusion in final sample. Mixed effects modeling was employed with students nested within school. Logistic regression determined SNSD association with in-school (ISS) and out-of-school (OSS) suspensions. ISS and OSS were dichotomized (No ISS/OSS = 0; nonzero ISS/OSS = 1) to serve as outcome variables. Full model covariates included age, sex, race, circadian preference, parent educational level, homelessness, free and reduced lunch, and special education status.
Results
Final sample included 3,860 students. Shorter SNSD associated with greater likelihood of OSS [OR = 0.83, 95% CI (-0.28, -0.09), X2 = 16.1, p < 0.0001], but not ISS [OR = 0.97, 95% CI (-0.14, -0.070), X2 = 0.44, p = 0.51]. Significance between SNSD and OSS was maintained in the full model [OR = 0.84, 95% CI (-0.27, -0.08), X2 = 13.2, p = 0.0003]. Each additional hour of sleep associated with 16% lower risk of OSS.
Conclusion
These results suggest that students with shorter SD are at increased risk for OSS, which further highlights the potential deleterious impact of short SD on adolescent educational experience.
Support
This research was generously supported by a grant from the Madison Education Partnership (MEP).
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Affiliation(s)
- J D Cook
- University of Wisconsin School of Medicine and Public Health, Department of Psychiatry, Madison, WI
| | - P E Peppard
- University of Wisconsin School of Medicine and Public Health, Department of Population Health Sciences, Madison, WI
| | - E E Blair
- University of Wisconsin-Whitewater, Department of Educational Foundationscat, Whitewater, WY
| | - K M Tran
- University of Wisconsin School of Medicine and Public Health, Department of Psychiatry, Madison, WI
| | - D T Plante
- University of Wisconsin School of Medicine and Public Health, Department of Psychiatry, Madison, WI
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Cuamatzi-Castelan AS, Cheng P, Fellman-Couture C, Tallent G, Tran KM, Espie CA, Joseph C, Roehrs T, Drake CL. 0375 Long-term Efficacy of the Sleep to Prevent Evolving Affective Disorders (SPREAD) Trial as an Internet-based Treatment for Insomnia. Sleep 2018. [DOI: 10.1093/sleep/zsy061.374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
| | - P Cheng
- Henry Ford Health Systems, Novi, MI
| | | | | | - K M Tran
- Henry Ford Health Systems, Novi, MI
| | | | - C Joseph
- Henry Ford Health Systems, Novi, MI
| | - T Roehrs
- Henry Ford Health Systems, Detroit, MI
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Li X, Tran KM, Aziz KE, Sorokin AV, Chen J, Wang W. Defining the Protein-Protein Interaction Network of the Human Protein Tyrosine Phosphatase Family. Mol Cell Proteomics 2016; 15:3030-44. [PMID: 27432908 DOI: 10.1074/mcp.m116.060277] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2016] [Indexed: 12/25/2022] Open
Abstract
Protein tyrosine phosphorylation, which plays a vital role in a variety of human cellular processes, is coordinated by protein tyrosine kinases and protein tyrosine phosphatases (PTPs). Genomic studies provide compelling evidence that PTPs are frequently mutated in various human cancers, suggesting that they have important roles in tumor suppression. However, the cellular functions and regulatory machineries of most PTPs are still largely unknown. To gain a comprehensive understanding of the protein-protein interaction network of the human PTP family, we performed a global proteomic study. Using a Minkowski distance-based unified scoring environment (MUSE) for the data analysis, we identified 940 high confidence candidate-interacting proteins that comprise the interaction landscape of the human PTP family. Through a gene ontology analysis and functional validations, we connected the PTP family with several key signaling pathways or cellular functions whose associations were previously unclear, such as the RAS-RAF-MEK pathway, the Hippo-YAP pathway, and cytokinesis. Our study provides the first glimpse of a protein interaction network for the human PTP family, linking it to a number of crucial signaling events, and generating a useful resource for future studies of PTPs.
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Affiliation(s)
- Xu Li
- From the ‡Department of Experimental Radiation Oncology, The University of Texas M.D. Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, Texas 77030
| | - Kim My Tran
- From the ‡Department of Experimental Radiation Oncology, The University of Texas M.D. Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, Texas 77030
| | - Kathryn E Aziz
- From the ‡Department of Experimental Radiation Oncology, The University of Texas M.D. Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, Texas 77030
| | - Alexey V Sorokin
- From the ‡Department of Experimental Radiation Oncology, The University of Texas M.D. Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, Texas 77030
| | - Junjie Chen
- From the ‡Department of Experimental Radiation Oncology, The University of Texas M.D. Anderson Cancer Center, 1515 Holcombe Boulevard, Houston, Texas 77030;
| | - Wenqi Wang
- §Department of Developmental and Cell Biology, University of California, Irvine, California 92697
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Frank SM, El-Rahmany HK, Tran KM, Vu B, Raja SN. Comparison of lower extremity cutaneous temperature changes in patients receiving lumbar sympathetic ganglion blocks versus epidural anesthesia. J Clin Anesth 2000; 12:525-30. [PMID: 11137413 DOI: 10.1016/s0952-8180(00)00207-5] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
STUDY OBJECTIVE To investigate if paravertebral lumbar sympathetic ganglion block and lumbar epidural anesthesia result in comparable cutaneous temperature changes in the lower extremity. DESIGN Nonrandomized comparison study. SETTING Operating rooms and pain clinic procedure rooms in a tertiary care hospital. PATIENTS AND INTERVENTIONS 18 patients undergoing lumbar sympathetic ganglion blocks for the diagnosis and/or treatment of chronic pain, and 13 patients undergoing lumbar epidural anesthesia for radical prostatectomy. MEASUREMENTS Cutaneous temperatures were measured over the great toe, calf, and thigh in all patients. Mean maximum temperature (Tmax), rate of change of skin temperature (from 5% to 95% of maximum temperature change), and mean time to 1 degrees C increase, and 50% and 95% of maximum temperature change for each group were compared. Temperature changes for the epidural and lumbar sympathetic block patients were compared. MAIN RESULTS Epidural and lumbar sympathetic block resulted in similar Tmax (34.1 +/- 0.2 and 33.8 +/- 0.9 degrees C, respectively, mean +/- SEM; p = 0.18) and rate of temperature change (0.64 +/- 0.09 and 0.49 +/- 0.07 degrees C/min; p = 0.2) in the great toe. The onset of cutaneous temperature change after lumbar sympathetic block was slower than after epidural anesthesia (1 degrees C increase: 17 and 11 min, respectively, 50% of Tmax: 25 and 17 min, respectively, and 95% of Tmax: 40 and 31 min, respectively; p < 0.05 for each). CONCLUSIONS The similar rate and magnitude of cutaneous temperature change in the distal lower extremity suggests the degree of sympathetic blockade is similar with lumbar sympathetic blockade and epidural anesthesia. Either technique should provide adequate sympathectomy for treating sympathetically maintained pain once the diagnosis has been confirmed using selective sympathetic blockade.
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Affiliation(s)
- S M Frank
- Department of Anesthesiology and Critical Care Medicine, The Johns Hopkins Institutions, Baltimore, MD 21287, USA.
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Tran KM, Johnson RK, Soultanakis RP, Matthews DE. In-person vs telephone-administered multiple-pass 24-hour recalls in women: validation with doubly labeled water. J Am Diet Assoc 2000; 100:777-83. [PMID: 10916515 DOI: 10.1016/s0002-8223(00)00227-3] [Citation(s) in RCA: 145] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
OBJECTIVE To determine the accuracy of energy intakes estimated with the multiple-pass 24-hour recall method in women by conducting in-person and telephone interviews. Doubly labeled water measurements of total energy expenditure were used for validation. SUBJECTS Thirty-five weight-stable women (mean age = 30 years, range = 19 to 46 years) participated. DESIGN Total energy expenditure was measured over a 14-day period using the doubly labeled water method. During this time, 4 multiple-pass 24-hour recalls were obtained from the women (2 in-person, 2 by telephone) who were provided 2-dimensional food models to estimate portion sizes. The Food Intake Analysis System was used to analyze recall data. STATISTICAL ANALYSES Paired t tests were conducted to examine differences between energy intake estimated from the telephone and in-person interviews. Agreement between the energy intake estimates from the telephone recalls and the in-person recalls was assessed using the technique of Bland and Altman. Paired t tests were used to compare energy intake estimated from the telephone and in-person recalls to total energy expenditure. RESULTS No significant difference in mean daily energy intake was found between the telephone (2,253 +/- 688 kcal) and in-person (2,173 +/- 656 kcal) interviews (P = .36). However, the mean energy intake from each interview method was significantly lower than total energy expenditure (2,644 +/- 503 kcal) (P = .006 and .001, respectively). APPLICATIONS/CONCLUSIONS Underreporting of energy intake was widespread in the sample. Although the multiple-pass 24-hour recall method did not generate a group measure of energy intake that was accurate or unbiased, the telephone-administered multiple-pass 24-hour recall was just as effective in estimating energy intake as the recall administered in-person. Dietetics professionals should be aware of the pervasive and serious problem of under-reporting of self-reported food intakes.
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Affiliation(s)
- K M Tran
- Kaiser Permanente, St Albans, USA
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10
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Abstract
STUDY OBJECTIVE To investigate the efficacy of warmed, humidified inspired oxygen (O(2)) for the treatment of mildly hypothermic postoperative patients. DESIGN Prospective, randomized, unblinded clinical trial. SETTING Postanesthesia care unit in a tertiary care hospital. PATIENTS AND INTERVENTIONS 30 ASA physical status I, II, and III patients following intraabdominal surgical procedures were randomly assigned to receive either routine O(2) therapy (control group, n = 15), or warmed (42 degrees C) humidified O(2) (treatment group, n = 15) for the initial 90 postoperative minutes. MEASUREMENTS Core (tympanic) temperature, dry mouth score and shivering score. MAIN RESULTS Tympanic temperature was similar in both groups on admission ( approximately 35.8 degrees C). Rewarming rate in the first postoperative hour was greater in the treatment group (0.7 +/- 0.1 degrees C. hr(-1)) compared to the control group (0.4 +/- 0.1 degrees C. hr(-1)) (p = 0.03). Patients receiving the warmed, humidified O(2) had a lower incidence of dry mouth compared to the control group (p = 0.03). The incidence of shivering was low and similar in both groups. CONCLUSIONS Warming and humidifying inspired O(2) hastens recovery from hypothermia in postoperative patients.
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Affiliation(s)
- S M Frank
- Department of Anesthesiology and Critical Care Medicine, The Johns Hopkins Medical Institutions, Baltimore, MD 21287, USA.
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11
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Tran KM, Frank SM, Raja SN, El-Rahmany HK, Kim LJ, Vu B. Lumbar sympathetic block for sympathetically maintained pain: changes in cutaneous temperatures and pain perception. Anesth Analg 2000; 90:1396-401. [PMID: 10825327 DOI: 10.1097/00000539-200006000-00025] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
UNLABELLED Lumbar sympathetic block (LSB) is used in the management of sympathetically maintained pain states. We characterized cutaneous temperature changes over the lower extremities after LSB. Additionally, we examined the effects of iohexol, a radio-opaque contrast medium, on temperature changes and pain relief. After institutional review board approval and written, informed consent, 28 LSBs were studied in 17 patients. Iohexol or normal saline was injected in a randomized, double-blinded fashion before bupivacaine. Lower extremity cutaneous temperatures were measured. Pain, allodynia, interference with daily function, and perceived pain relief were reported in a subset of 15 LSBs for 1 wk after the block. The distal lower extremity ipsilateral to the LSB had the greatest magnitude (8.7 degrees +/- 0.8 degrees C) and rate (1.1 degrees +/- 0.2 degrees C/min) of temperature change. The great toe temperature was within 3 degrees C of core temperature within 35 min after LSB. There were no differences in temperature change between the groups. The iohexol group had greater relief of pain until the morning of the first postblock day (P = 0.002) and longer perceived relief of pain (P = 0.01). The maximum temperature of the great toe correlated with allodynia relief (P = 0.0007). Thus clinicians should expect ipsilateral toe temperatures to increase to within approximately 3 degrees C of core temperature. Iohexol does not alter the efficacy of LSB and may improve relief of symptoms. The magnitude of temperature change may predict relief of allodynia. IMPLICATIONS Cutaneous toe temperatures approaching core temperature provide a useful monitor of lumbar sympathetic block and may predict relief of sympathetically maintained pain. Iohexol will not compromise temperature changes or pain relief.
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Affiliation(s)
- K M Tran
- The Johns Hopkins University School of Medicine, Department of Anesthesiology and Critical Care Medicine, The Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
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Cattaneo CG, Frank SM, Hesel TW, El-Rahmany HK, Kim LJ, Tran KM. The accuracy and precision of body temperature monitoring methods during regional and general anesthesia. Anesth Analg 2000; 90:938-45. [PMID: 10735803 DOI: 10.1097/00000539-200004000-00030] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
UNLABELLED We tested the hypotheses that accuracy and precision of available temperature monitoring methods are different between spinal anesthesia (SA) and general anesthesia (GA), and that patients receiving SA are at equal risk for hypothermia as those receiving GA. Patients scheduled for radical retropubic prostatectomy were enrolled. Either GA (n = 16) or SA (n = 16) was given according to patient and clinician preference. Temperatures were monitored with thermocouple probes at the tympanic membrane, axilla, rectum, and forehead skin surface. Tympanic temperatures were also measured with an infrared device, and forehead skin temperatures were monitored with two brands of liquid crystal thermometer strips. Accuracy and precision of these monitoring methods were determined by using tympanic membrane temperature, measured by thermocouple, as the reference core temperature (T(c)). At the end of surgery, T(c) was similar between SA (35.0 +/- 0.1 degrees C) and GA (35.2 +/- 0.1 degrees C) (P = 0.44). Accuracy and precision of each temperature monitoring method were similar between SA and GA. Rectal temperature monitoring offered the greatest combination of accuracy and precision. All other methods underestimated T(c). These findings suggest that patients receiving SA or GA are at equal and significant risk for hypothermia, and should have their temperatures carefully monitored, recognizing that most monitoring methods underestimate T(c). IMPLICATIONS Body temperature should be monitored during spinal anesthesia because patients are at significant risk for hypothermia. Rectal temperature is a valid method of measuring core temperature, whereas other methods tend to underestimate true core temperature.
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Affiliation(s)
- C G Cattaneo
- Department of Anesthesiology and Critical Care Medicine, The Johns Hopkins Medical Institutions, Baltimore, Maryland 21287, USA.
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