Guy Elgar

Mr. Guy Elgar

New York Medical College, Valhalla, USA
+1
orcid

Research Focus & Metrics

Academic Career Length

7Years (2020-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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Guy ElgarGuy Elgar
Guy Elgar
Abbas SmileyAbbas Smiley
Abbas Smiley
RLRifat Latifi
Rifat Latifi
Background: Blunt thoracic trauma is responsible for 35% of trauma-related deaths in the United States and significantly contributes to morbidity and healthcare-related financial strain. The goal of this study was to evaluate factors influencing mortality in patients emergently admitted with the primary diagnosis of blunt chest wall trauma. Methods: Adults emergently admitted for blunt chest trauma were assessed using the National Inpatient Sample Database, 2004–2014. Data regarding demographics, comorbidities, and outcomes were collected. Relationships were determined using univariable and multivariable logistic regression models. Results: In total, 1120 adult and 1038 elderly patients emergently admitted with blunt chest trauma were assessed; 46.3% were female, and 53.6% were male. The average ages of adult and elderly patients were 46.6 and 78.9 years, respectively. Elderly and adult patients both displayed mortality rates of 1%. The regression model showed HLOS and several comorbidities as the main risk factors of mortality Every additional day of hospitalization increased the odds of mortality by 9% (OR = 1.09, 95% CI = 1.01–1.18, p = 0.033). Mortality and liver disease were significantly associated (OR = 8.36, 95% CI = 2.23–31.37, p = 0.002). Respiratory disease and mortality rates demonstrated robust correlations (OR = 7.46, 95% CI = 1.63–34.11, p = 0.010). Trauma, burns, and poisons were associated with increased mortality (OR = 3.72, 95% CI = 1.18–11.71, p = 0.025). The presence of platelet/white blood cell disease correlated to higher mortality. (OR = 4.42, 95% CI = 1.09–17.91, p = 0.038).

Guy ElgarGuy Elgar
Guy Elgar
PSParsa Smiley
Parsa Smiley
Abbas SmileyAbbas Smiley
Abbas Smiley
CFCailan Lindsay Feingold
Cailan Lindsay Feingold
RLRifat Latifi
Rifat Latifi
Background: In the United States, ileus accounts for USD 750 million of healthcare expenditures annually and significantly contributes to morbidity and mortality. Despite its significance, the complete picture of mortality risk factors for these patients have yet to be fully elucidated; therefore, the aim of this study is to identify mortality risk factors in patients emergently admitted with paralytic ileus. Methods: Adult and elderly patients emergently admitted with paralytic ileus between 2005–2014 were investigated using the National Inpatient Sample Database. Clinical outcomes, therapeutic management, demographics and comorbidities were collected. Associations between mortality and all other variables were established via univariable and multivariable logistic regression models. Results: A total of 81,674 patients were included, of which 45.2% were adults, 54.8% elderly patients, 45.8% male and 54.2% female. The average adult and elderly ages were 48.3 and 78.8 years, respectively. Elderly patients displayed a significantly (p < 0.01) higher mortality rate (3.0%) than adults (0.7%). The final multivariable logistic regression model showed that for every one-day delay in operation, the odds of mortality for adult and elderly patients increased by 4.1% (p = 0.002) and 3.2% (p = 0.014), respectively. Every additional year of age corresponded to 3.8% and 2.6% increases in mortality for operatively managed adult (p = 0.026) and elderly (p = 0.015) patients. Similarly, non-operatively treated adult and elderly patients displayed associations between mortality and advanced age (p = 0.001). The modified frailty index exhibited associations with mortality in operatively treated adults, conservatively managed adults and conservatively managed elderly patients (p = 0.001). Every additional day of hospitalization increased the odds of mortality in non-operative adult and elderly patients by 7.6% and 5.8%, respectively. Female sex correlated to lower mortality rates in non-operatively managed adult patients (odds ratio = 0.71, p = 0.028). Undergoing invasive diagnostic procedures in non-operatively managed elderly patients related to reduced mortality (odds ratio = 0.78, p = 0.026). Conclusions: Patients emergently admitted for paralytic ileus with increased hospital length of stay, longer time to operation, advanced age or higher modified frailty index displayed higher mortality rates. Female sex and invasive diagnostic procedures were negatively correlated with death in nonoperatively managed patients with paralytic ileus.

6 September 2024 in Artificial Organs
Verified
Journal Article
Closed access
VGVasiliki Gregory
Vasiliki Gregory
AIAmeesh Isath
Ameesh Isath
GLGregg M. Lanier
Gregg M. Lanier
ALAvi Levine
Avi Levine
SPStephen Pan
Stephen Pan
SOSuguru Ohira
Suguru Ohira

5 November 2020 in Blood
Verified
Journal Article
Open access
MGMoran Gotesman
Moran Gotesman
Guy ElgarGuy Elgar
Guy Elgar
YPYoungju Pak
Youngju Pak
LSLaura Hernandez Santiago
Laura Hernandez Santiago
AAAbigail Alvarez
Abigail Alvarez
EPEduard H. Panosyan
Eduard H. Panosyan
Background.Sickle cell disease (SCD) affects millions of people worldwide, including >100,000 Americans, and is often complicated by acute crises. Complex pathophysiology makes it challenging to ameliorate SCD severity, which can be influenced by hydration and disease-modifying agents such as hydroxyurea (HU). Due to the increased metabolic demands of chronic illness, optimal nutrition and presumably antioxidant L-glutamine (Gln) may further contribute to disease control. Thus, we hypothesized that better nutrition and Gln adherence may reduce occurrences of pain crises in SCD. Methods.An IRB-approved retrospective review of pediatric patients with SCD ≥1 y of age was conducted at our institution, along with voluntary nutrition surveys. Evaluations were carried out for associations between disease severity and clinical/laboratory variables representing nutrition, growth, hematologic parameters [fetal hemoglobin (HbF), mean corpuscular volume (MCV)], and treatment compliance (with HU and/or Gln). Results.Preliminary analyses included data from 50 SCD patients (25 F/25 M), with a mean age of 9.1 ±7 y and a mean BMI of 56.4 ±32.6% (±SDEV). Sixty percent of the patients had HbSS/Sß0 (32%-HbSC and 8%-HbSß+). The average number of annual pain crises (APC, 0.97 ±1.14) requiring hospital visits or admissions per patient rose with age. HbF expectedly dropped with age. HbF levels <10% in teenage and older patients were associated with a ≥2-fold higher APC, compared to younger patients (despite similar proportions of HbSS/Sß0). Proper hydration and nutrition were reported by 69% and 43% of 35 survey participants, respectively. APC values for 3 main groups were: - 0.87 ±1.1 for well hydrated/well nourished (n=14, 3.1 ±2.3 y) - 1.4 ±2 for well hydrated/poorly nourished (n=10, 11 ±6.4 y) - 1.97 ±2 for poorly hydrated/poorly nourished (n=8, 13 ±5.4 y). There were no correlations between caloric intake and BMI. However, 20% of surveyed patients (12 ±7.8 y) had Z-scores lower than -1 SD for both height and weight. Their mean APC was significantly higher (2.5 ±2.5vs.1 ±1.3,p=0.03 byt-test). Their prealbumin levels trended lower than normal for age, and were more diminished in older patients. Nearly 60% of our patients were on HU (80% with HbSS/Sß0, age 10.8 ±7.4 y). Good HU adherence was reported by 22 patients, typically ≥90%, which was associated with higher MCVs (92 ±9.6 vs. 74 ±10 f/L,p<0.01), a trend toward higher HbF levels, and younger ages (15 vs. 9% and 9.7 ±7 vs. 14 ±7.7 y,p=NS). The majority (83%) of our patients 5 y of age or older were prescribed Gln, and 70% of the prescriptions were dispensed. Some refused Gln due to abdominal pain or taste, and a quarter of patients reported <50% Gln intake while on both HU and Gln. Thus, overall Gln compliance in 23-months was ≥70% in 12 patients. Patients were excluded while on chronic transfusion. Of 10 evaluable patients, 6 (8.8 ±2.2 y) had a significantly lower APC with Gln (mean APC decrease 0.9 to 0.2,p=0.016 by pairedt-test) coupled with a 12% rise in prealbumin (14.1 to 15.8 mg/dL;p=0.1). Conclusions.Well-nourished/hydrated patients were younger and had a milder disease phenotype, whereas more severe disease was seen in poorly nourished older patients, often with suboptimal compliance. L-Glutamine can be a clinically meaningful addition to HU and should be further studied in pediatric SCD.

30 March 2022
Verified
Preprint
Open access
PDF file
MGMoran Gotesman
Moran Gotesman
Guy ElgarGuy Elgar
Guy Elgar
LHLaura Hernandez-Santiago
Laura Hernandez-Santiago
AAAbigail Alvarez
Abigail Alvarez
YPYoungju Pak
Youngju Pak
EPEduard Panosyan
Eduard Panosyan
Background. Hydration and hydroxyurea (HU) can modify sickle cell disease (SCD) severity. Optimal nutrition and L-glutamine (Gln) may provide further amelioration. Procedures. EMR reviews and nutrition surveys were used to investigate pediatric SCD severity in relation to nutrition, growth, hematologic parameters, and disease-modifying agents. Results. Among 25 females and 25 males, mean age was 9.1±7 years, and mean BMI percentile was 56.4±32.6. Hemoglobinopathies were: HbSS/Sß0, 60%; HbSC, 32%; HbSß+, 8%. Annual pain crises rose with age (APC mean, 0.97±1.1 hospital visits or admissions per patient). HbF dropped to <10% in teenagers, while APC increased ≥2-fold. Proper hydration and nutrition correlated with younger ages and fewer APCs. Height and weight Z-scores were ≤ -1SD in 20% of 35 surveyed patients (12±7.8 years) with more APCs (2.5±2.5 vs. 1±1.3, p=0.03). Prealbumin was low overall. Twenty-two of 28 patients on HU reported ≥90% adherence – with higher MCVs (92±9.6 vs. 74±10 f/L, p<0.01) and HbF%, and younger ages. Most children aged ≥5 years were prescribed Gln (70% dispensed). A quarter of patients reported <50% Gln intake due to abdominal pain or taste. Gln compliance over 23 months was ≥70% in 12 patients, including 2 on chronic transfusion. Of 10 evaluable patients, 6 (8.8 ±2.2 years) had fewer APCs on Gln (mean 0.2 vs. 0.9, p=0.016), with higher prealbumin (14.1 to 15.8 mg/dL, p=0.1). Conclusions. Young, well-nourished/hydrated patients have a milder clinic course. Severe disease occurred in undernourished teenagers with suboptimal compliance. L-Glutamine should be further evaluated in pediatric SCD along with prealbumin measurements.