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394 citation(s) found for "Iyer, P G".

International Validation of a Novel PEACE Scale to Improve the Quality of Upper Gastrointestinal Mucosal Inspection During Endoscopy
Romańczyk, Marcin , Desai, Madhav , Abe, Seiichiro , Alkandari, Asma , Beyna, Torsten , Bisschops, Raf , Budzyń, Krzysztof , Grover, Samir C. , Gyawali, C. Prakash, Inoue, Haruhiro , Iyer, Prasad G. , Srinivasan, Sachin , Gyawali, C. Prakash , Hassan, Cesare , Gyawali, C P , Hassan, Cesare , Bisschops, Raf , Grover, Samir C , Kaminski, Michal Filip , Bugdol, Monika Natalia , Messmann, Helmut , Ragunath, Krish , Saito, Yutaka , Teshima, Christopher , Yadlapati, Rena , Sharma, Prateek

Clinical and Translational Gastroenterology | November 14, 2024 | Volume: 16 | Issue: 1 | Pages: e00786

10.14309/ctg.0000000000000786 | PMID 39853720 Get It

INTRODUCTION: The performance of a high quality esophagogastroduodenoscopy (EGD) is dependent on the mucosal cleanliness. Recently, the Polprep: Effective Assessment of Cleanliness in EGD (PEACE) scale was created to assess the degree of mucosal cleanliness during EGD. The aim of this study was to validate this scoring system in a cohort of international endoscopists. METHODS: In total, 39 EGD videos, with different degrees of mucosal cleanliness were retrieved from a previously conducted prospective trial. All experts rated the cleanliness of the mucosa on each video using the PEACE scale. To evaluate agreement of all scores (0–3), intraclass correlation coefficient 2.1 was used. The agreement on adequate (scores 2 and 3) and inadequate (scores 0 and 1) cleanliness was assessed using kappa values. RESULTS: Videos evaluating esophagus, stomach, and duodenum cleanliness were reviewed by 16 endoscopists. The PEACE scores demonstrated good agreement (intraclass correlation coefficient 0.82, 95% CI 0.75–0.89), especially for esophagus (0.84; 95% CI 0.71–0.95) and stomach (0.81; 95% CI 0.69–0.91), while agreement was moderate for the duodenum (0.69; 95% CI 0.51–0.87). The agreement was similar between Eastern (0.86; 95% CI 0.79–0.92) and Western experts (0.80; 95% CI 0.72–0.88). Similarly, agreement regarding adequate cleanliness was comparable between Eastern (0.70; 95% CI 0.55–0.85) and Western (0.74; 95% CI 0.64–0.84) endoscopists being overall 0.75 (95% CI 0.65–0.85). DISCUSSION: The PEACE scoring system is a simple and reliable scale to assess the cleanliness during EGD. The score is now validated among international experts with high concordance, justifying its use in clinical practice.
Mosaic Copy Number Variation in a Patient with Cerebral and Pulmonary Arteriovenous Malformations and Recurrent Epistaxis
Cyrus, Sharri , Kluge, Michelle L. , Marcou, Cherisse A. , Thorland, Erik C., Baudhuin, Linnea M. , Cyrus, Sharri S, Iyer, Vivek

Clinical Chemistry | November 4, 2024 | Volume: 70 | Issue: 11 | Pages: 1315-1319

10.1093/clinchem/hvae101 | PMID 39489484 Get It

Safety, tolerability and blood pressure lowering of the innovative guanylyl cyclase a-receptor activator MANP in an ethnically diverse resistant hypertension population: a phase 1B clinical trial
Chen, Hao , Smith, David H.G., Neutel, J M, Moroni, D, Sangaralingham, S. Jeson , Burnett, John C. , Chen, H, Neutel, Joel M., Iyer, Seethalakshmi , Crown, John , Sangaralingham, S. Jeson

European Heart Journal | October 28, 2024 | Volume: 45 | Issue: Supplement_1 | Pages: No page available

10.1093/eurheartj/ehae666.2582 Get It

Abstract Background/Introduction MANP is a novel atrial natriuretic peptide (ANP) analog bioengineered as a particulate guanylyl cyclase A receptor (GC-A) activator with superior receptor binding, resistance to neprilysin degradation, natriuretic, aldosterone suppressing and blood pressure (BP) lowering properties than native ANP. MANP is now under clinical development for resistant hypertension (RH). The rationale for its design was the fundamental role of the ANP/GC-A system in BP homeostasis through which GC-A activation with MANP leads to BP reduction through renal, vascular, and hormonal mechanisms mediated by the second messenger cGMP. Purpose We investigated the safety, tolerability, cGMP activation and BP reductions of MANP compared to placebo in subjects with RH. Methods We performed a double-blind, placebo controlled randomized trial in 36 RH patients comprised of approximately 50% non-African Americans (NAA) and 50% AA. MANP was administered in 6 cohorts receiving ascending subcutaneous (SQ) doses of MANP once daily from 3 ug/kg to a maximal dose of 7 ug/kg or placebo for 5 days and then followed for 21 days after dosing. Endpoints included safety, cGMP activation and changes in systolic BP (SBP), aldosterone (Aldo) levels and glomerular filtration rate (GFR). Results MANP was safe and well tolerated. One patient in the 7 ug/kg cohort was discontinued due to symptomatic hypotension. Compared to baseline, plasma cGMP increased in all MANP groups on Day 1 and Day 5 with no change in the placebo group. The maximal SBP reduction in the MANP group on Days 1 (D1) and 5 (D5) was -17.5 (D1) and -16 mmHg (D5) with 3 ug/kg (lowest dose) and -39.5 (D1) and -36.3 mmHg (D5) with 7 ug/kg (highest dose); Changes in the Placebo group were -6.3 (D1) and -16.7 mmHg (D5). Notably, the SBP reductions in AA were greater than NAA in the 4 and 7 ug/kg cohorts. After the 1-hour timepoint on both the first and fifth days, Aldo and percentage of Aldo reduction generally remained suppressed compared to baseline. Twenty-one days after MANP dosing, SBP remained lower in three groups receiving SQ MANP (4, 4.5 and 7 ug/kg) compared to placebo in association with a preservation of GFR. There were no reported drug related serious adverse events. Conclusions This clinical trial demonstrates that once a day SQ administration of MANP in RH subjects activates cGMP, without attenuation over 5 days, and reduces SBP and preserves GFR. At higher doses of MANP, SBP reductions were greater in AA compared to NAA. MANP also demonstrated Aldo inhibiting actions compared to placebo. Importantly, MANP was overall safe and well-tolerated. Our findings support the continued clinical development of MANP as a novel GC-A activating peptide for the treatment of RH.
S647 Balloon Cryotherapy is Highly Effective in Patients With Poor Response to Radiofrequency Ablation Therapy for Dysplastic Barrett’s Esophagus: Preliminary Results from the NO FEAR-BE Study
Shaheen, Nicholas J. , Iyer, Prasad G. , Khara, Harshit S. , Elias, Puja S., Chak, Amitabh , Shafa, Shervin , Peter, Shajan, Smith, Michael S. , Moist, Susan E., Walker, Kacie B, Kim, Julia , Jones, Carson, Canto, Marcia Irene , Cotton, Cary C. , Abrams, Julian A , Thosani, Nirav C , Cortright, Lindsay M. , Walker, Kacie B., Jones, Carson, Trindade, Arvind J.

American Journal of Gastroenterology | October 24, 2024 | Volume: 119 | Issue: 10S | Pages: S448-S448

10.14309/01.ajg.0001031956.24377.ea Get It

S681 Identifying Predictors of On-Time Surveillance in Patients With Barrett’s Esophagus Post-Endoscopic Eradication Therapy
Chandi, Paras Singh , Sileno, Sean, Zhang, Han , Verma, Anjul, Bach, Laura, Iyer, Prasad G. , Wang, Fangfang, Bach, Laura E., Kahn, Allon

American Journal of Gastroenterology | October 24, 2024 | Volume: 119 | Issue: 10S | Pages: S470-S471

10.14309/01.ajg.0001032092.58395.ec Get It

S562 Incidence of Young-Onset Barrett’s Esophagus is Increasing: A Population-Based Study From a Multi-Institutional National Database
Vasireddy, Anila , Chandar, Apoorva K., Maravillas, Mart Andrew , Pérez, Jaime A. , Perneth, Sandra Algarin, Leggett, Cadman, Iyer, Prasad G. , Gaddam, Srinivas , Kamboj, Amrit K. , Leggett, Cadman L.

American Journal of Gastroenterology | October 24, 2024 | Volume: 119 | Issue: 10S | Pages: S389-S390

10.14309/01.ajg.0001031616.24587.11 Get It

Comparing recurrence rates between endoscopic mucosal resection and endoscopic submucosal dissection in Barrett’s endoscopic therapy: timing and definitions matter!
Vantanasiri, Kornpong , Iyer, Prasad G.

Endoscopy | October 16, 2024 | Volume: 57 | Issue: 01 | Pages: 14-16

10.1055/a-2427-7128 | PMID 39413839 Get It

Spinal Anesthesia for Multilevel Awake Minimally Invasive Transforaminal Lumbar Interbody Fusion: Single-Center Experience
Llano, Juan P Navarro-Garcia de , Cueto, Macarena Fuentes-Fernandez, Sánchez-Garavito, Jesús E. , Shah, Siddharth , Iyer, Harshvandan, Ariwodo, Ogechuku, Michaelides, Loizos , Patterson, Jennifer S., White, Kate E., Bojaxhi, Elird , Navarro-Ramírez, Rodrigo , Buchanan, Ian A. , Iyer, Harshvardhan , Navarro-Garcia de Llano, Juan P, Fuentes-Fernandez Cueto, Macarena, Roberts, Andrew P, Iyer, Harshvardhan G , Roberts, Andrew P., Biase, Gaetano De , ReFaey, Karim , Abode-Iyamah, Kingsley

Operative Neurosurgery | September 27, 2024 | Volume: 28 | Issue: 6 | Pages: 855-861

10.1227/ons.0000000000001380 | PMID 39329514 Get It

BACKGROUND AND OBJECTIVES: Awake minimally invasive transforaminal lumbar interbody fusion (MIS-TLIF) generates minimal surrounding tissue damage and has been shown to be a safe, time-effective, and cost-reductive technique in single-level procedures. The purpose of this study was to advocate for the utilization of multilevel MIS-TLIF even in challenging cases as it has demonstrated positive outcomes. METHODS: Chart review was conducted for consecutive patients undergoing awake multilevel MIS-TLIF from 2020 to 2023. Various demographic, preoperative, and postoperative variables were collected and descriptively analyzed. RESULTS: Sixteen patients underwent multilevel awake MIS-TLIF at our institution during the specified period. Among them, 87.5% underwent a two-level procedure and 12.5% a three-level procedure. The median age ± IQR was 69.5 ± 11 years, with a slight male predominance (56.25%). Common comorbidities included hypertension (56.25%), obesity (37.5%), sleep apnea (25%), and type 2 diabetes (18.75%). The American Society of Anesthesiologists risk was 2 in 43.75% of patients and 3 in 56.25%. All patients presented pain, and 12.5% showed motor deficit. Intraoperative data showed a median of 196 minutes in the operating room where 156 ± 27.75 minutes corresponded to actual procedure time. The median estimated blood loss was 50 ± 70 cc. In the immediate postoperative period, 1 patient had nausea and emesis, and 1 reported fatigue. The median pain score during this period was 4.6 ± 2.03. Pain control medications were required for various patients, with methocarbamol (50%), hydromorphone (37.5%), and oxycodone (25%) being the most commonly prescribed in the postanesthesia care unit. No patient had new neurological deficits after the surgical intervention. The median length of stay was 2 days ±1.25. All patients were discharged with no complications. CONCLUSION: Multilevel awake MIS-TLIF emerges as a safe and effective technique for complex cases, enhancing patient quality of life with minimal blood loss and postoperative pain.