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Dive into the research topics where Sinziana Dumitra is active.

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Featured researches published by Sinziana Dumitra.


JAMA Surgery | 2017

Development and Validation of a Prognostic Score for Intrahepatic Cholangiocarcinoma

Mustafa Raoof; Sinziana Dumitra; Philip H. G. Ituarte; Laleh G. Melstrom; Susanne G. Warner; Yuman Fong; Gagandeep Singh

Importance In patients with intrahepatic cholangiocarcinoma (ICC), the oncologic benefit of surgery and perioperative outcomes for large multifocal tumors or tumors with contiguous organ involvement remain to be defined. Objectives To develop and externally validate a simplified prognostic score for ICC and to determine perioperative outcomes for large multifocal ICCs or tumors with contiguous organ involvement. Design, Setting, and Participants This study of a contemporary cohort merged data from the California Cancer Registry (January 1, 2004, through December 31, 2011) and the Office of Statewide Health Planning and Development inpatient database. Clinicopathologic variables were compared between tumors that were intrahepatic, small (<7 cm), and solitary (ISS) and those that had extrahepatic extension and were large (≥7 cm) and multifocal (ELM). External validation of the prognostic model was performed using an independent data set from the National Cancer Institute’s Surveillance, Epidemiology, and End Results database from January 1, 2004, through December 31, 2013. Main Outcomes and Measures Patient overall survival after hepatectomy. Results A total of 275 patients (123 men [44.7%] and 152 women [55.3%]; median [interquartile range] age, 65 [55-72] years) met the inclusion criteria. No significant differences in overall complication rate (ISS, 48 [34.5%]; ELM, 37 [27.2%]; P = .19) and mortality rate (ISS, 10 [7.2%]; ELM, 6 [4.4%]; P = .32) were found. A multivariate Cox proportional hazards model demonstrated that multifocality, extrahepatic extension, grade, node positivity, and age greater than 60 years are independently associated with worse overall survival. These variables were used to develop the MEGNA prognostic score. The prognostic separation/discrimination index was improved with the MEGNA prognostic score (0.21; 95% CI, 0.11-0.33) compared with the staging systems of the American Joint Committee on Cancer sixth (0.17; 95% CI, 0.09-0.29) and seventh (0.18; 95% CI, 0.08-0.30) editions. Conclusions and Relevance The MEGNA prognostic score allows more accurate and superior estimation of patient survival after hepatectomy compared with current staging systems.


JAMA Surgery | 2017

Wireless Monitoring Program of Patient-Centered Outcomes and Recovery Before and After Major Abdominal Cancer Surgery

Virginia Sun; Sinziana Dumitra; Nora Ruel; Byrne Lee; Laleh G. Melstrom; Kurt Melstrom; Yanghee Woo; Stephen Sentovich; Gagandeep Singh; Yuman Fong

Importance A combined subjective and objective wireless monitoring program of patient-centered outcomes can be carried out in patients before and after major abdominal cancer surgery. Objective To conduct a proof-of-concept pilot study of a wireless, patient-centered outcomes monitoring program before and after major abdominal cancer surgery. Design, Setting, and Participants In this proof-of-concept pilot study, patients wore wristband pedometers and completed online patient-reported outcome surveys (symptoms and quality of life) 3 to 7 days before surgery, during hospitalization, and up to 2 weeks after discharge. Reminders via email were generated for all moderate to severe scores for symptoms and quality of life. Surgery-related data were collected via electronic medical records, and complications were calculated using the Clavien-Dindo classification. The study was carried out in the inpatient and outpatient surgical oncology unit of one National Cancer Institute–designated comprehensive cancer center. Eligible patients were scheduled to undergo curative resection for hepatobiliary and gastrointestinal cancers, were English speaking, and were 18 years or older. Twenty participants were enrolled over 4 months. The study dates were April 1, 2015, to July 31, 2016. Main Outcomes and Measures Outcomes included adherence to wearing the pedometer, adherence to completing the surveys (MD Anderson Symptom Inventory and EuroQol 5-dimensional descriptive system), and satisfaction with the monitoring program. Results This study included a final sample of 20 patients (median age, 55.5 years [range, 22-74 years]; 15 [75%] female) with evaluable data. Pedometer adherence (88% [17 of 20] before surgery vs 83% [16 of 20] after discharge) was higher than survey adherence (65% to 75% [13 of 20 and 15 of 20] completed). The median number of daily steps at day 7 was 1689 (19% of daily steps at baseline), which correlated with the Comprehensive Complication Index, for which the median was 15 of 100 (r = −0.64, P < .05). Postdischarge overall symptom severity (2.3 of 10) and symptom interference with activities (3.5 of 10) were mild. Pain (4.4 of 10), fatigue (4.7 of 10), and appetite loss (4.0 of 10) were moderate after surgery. Quality-of-life scores were lowest at discharge (66.6 of 100) but improved at week 2 (73.9 of 100). While patient-reported outcomes returned to baseline at 2 weeks, the number of daily steps was only one-third of preoperative baseline. Conclusions and Relevance Wireless monitoring of combined subjective and objective patient-centered outcomes can be carried out in the surgical oncology setting. Preoperative and postoperative patient-centered outcomes have the potential of identifying high-risk populations who may need additional interventions to support postoperative functional and symptom recovery.


Surgery | 2018

Disparities in managing emotions when facing a diagnosis of breast cancer: Results of screening program of couples distress

Sinziana Dumitra; Veronica Jones; Jennifer Rodriguez; Courtney Bitz; Ellen Polamero; Matthew Loscalzo; Laura Kruper; Susanne G. Warner

Introduction: Distress screening is now required for cancer center accreditation. Understanding patient and caregiver stress is critical to successful cancer care. This study examines the perceived emotional impact of breast cancer on both patients and partners. Methods: From March 2011‐February 2016, patients and partners undertook an electronic, 48‐point distress screen during their first visit at a surgical breast clinic. Distress was measured via self‐reported concerns on a five point Likert scale. Respondents were also asked about preferred interventions. The ability of the patient and partner to manage emotions was assessed in relation to education, ethnicity, fatigue, anxiety, and depression using ordered logistic regression. Results: Of the 665 individuals screened, 51.7%(n = 344) were patients, while 48.3%(n = 321) were partners. Patients were more distressed than partners regarding fatigue, anxiety, depression, and worrying about the future (p < 0.005). Only 19.7% of partners requested information with regards to “managing emotions” compared to 46.3% of patients. In the univariate analysis, being a partner was protective (OR 0.49 (95%CI 0.34–0.70, p < 0.000) as was holding an advanced educational degree (OR 0.36 (95%CI 0.14–0.93) p = 0.035). In the multivariate regression, having more education remained protective, while being a partner was no longer protective (OR 0.93(95%CI 0.62–1.39, p = 0.789). Financial concerns, anxiety, depression, and worrying about the future remained statistically significant. Partners asked for help less than patients (OR 0.28 (95%CI 0.17–0.48), p < 0.000). Conclusion: While partners have similar concerns as patients, they do not seek information or help in managing emotions as often as do patients. Both patient and partners with less education and increased financial distress were likely to report difficulty in managing emotions. This study identifies groups who would benefit from supportive measures even in the absence of a request for help.


JAMA Surgery | 2017

Association of Fluid Administration With Morbidity in Cytoreductive Surgery With Hyperthermic Intraperitoneal Chemotherapy

Oliver S. Eng; Sinziana Dumitra; Michael P. O’Leary; Mustafa Raoof; Mark T. Wakabayashi; Thanh H. Dellinger; Ernest S. Han; Stephen J. Lee; I. Benjamin Paz; Byrne Lee

Importance Cytoreductive surgery (CRS) with hyperthermic intraperitoneal chemotherapy (HIPEC) for peritoneal cancers can be associated with significant complications. Randomized trials have demonstrated increased morbidity with liberal fluid regimens in abdominal surgery. Objective To investigate the association of intraoperative fluid administration and morbidity in patients undergoing CRS/HIPEC. Design, Setting, and Participants A retrospective analysis of information from a prospectively collected institutional database was conducted at a National Cancer Institute–designated comprehensive cancer center. A total of 133 patients from April 15, 2009, to June 23, 2016, with primary or secondary peritoneal cancers were included. Exposures Cytoreductive surgery with hyperthermic intraperitoneal chemotherapy. Main Outcomes and Measures Morbidity associated with intraoperative fluid management calculated by the comprehensive complication index, which uses a formula combining all perioperative complications and their severities into a continuous variable from 0 to 100 in each patient. Results Of the 133 patients identified, 38% and 37% had diagnoses of metastatic appendiceal and colorectal cancers, respectively. Mean age was 54 (interquartile range [IQR], 47-64) years, and mean peritoneal cancer index was 13 (IQR, 7-18). Mitomycin and platinum-based chemotherapeutic agents were used in 96 (72.2%) and 37 (27.8%) of the patients, respectively. Mean intraoperative fluid (IOF) rate was 15.7 (IQR, 11.3-18.7) mL/kg/h. Mean comprehensive complication index (CCI) was 26.0 (IQR, 8.7-36.2). On multivariate analysis, age (coefficient, 0.32; 95% CI, 0.01-0.64; P = .04), IOF rate (coefficient, 0.97; 95% CI, 0.19-1.75; P = .02), and estimated blood loss (coefficient, 0.02; 95% CI, 0.01-0.03; P = .002) were independent predictors of increased CCI. In particular, patients who received greater than the mean IOF rate experienced a 43% increase in the CCI compared with patients who received less than the mean IOF rate (31.5 vs 22.0; P = .02). Conclusions and Relevance Intraoperative fluid administration is associated with a significant increase in perioperative morbidity in patients undergoing CRS/HIPEC. Fluid administration protocols that include standardized restrictive fluid rates can potentially help to mitigate morbidity in patients undergoing CRS/HIPEC.


Bone | 2018

Divergence from osteoporosis screening guidelines in older breast cancer patients treated with anti-estrogen therapy: A population-based cohort study

David Henault; Tracy Westley; Sinziana Dumitra; Sue-Ling Chang; Richard Kremer; Nancy E. Mayo; Ari N. Meguerditchian

PURPOSE Older Breast Cancer (BC) survivors are an increased risk of osteoporosis due to natural aging and long-term cancer treatment-related toxicity. It is well known that anti-estrogen therapy (AET), especially aromatase inhibitors (AI), is associated with rapid bone loss and thus increases the risk of osteoporosis. This study characterizes patterns and predictors of receiving guideline-recommended bone densitometry (BD) screening at AET initiation. METHODS A retrospective cohort study (1998-2012) of all women ≥65 years of age initiating AET was designed using claims data from Quebecs universal health care. Associations with BD screening were estimated using a generalized estimating equations regression model, adjusting for clustering of patients within physicians. RESULTS Among 16,480 women initiating AET, 36.1% received a baseline BD. Among AI users, the rate was 58.4%. In the multivariate analysis, age, lower socioeconomic status, tamoxifen use, lack of periodic health exam and having a general practitioner as the AET prescriber were associated with lower odds of BD screening. In terms of quality of care-related variables, lack of guideline-appropriate radiotherapy (OR: 0.69 (95% CI, 0.57-0.83), or chemotherapy consideration (0.82 (95% CI, 0.71-0.94)) and non-adherence to AET (0.76 (95% CI, 0.68-0.84)) were associated with lower odds of receiving BD screening. Women diagnosed with BC after 2003 had significantly better odds of being screened. CONCLUSION Despite an increase in rates since 2003, BD screening remains suboptimal, especially for women at higher risk of osteoporosis. Coordination of health care and service-delivery monitoring can potentially optimize long-term management of treatment-related toxicity in older BC survivors.


Archive | 2017

Emergencies After Cytoreductive Surgery and Hyperthermic Intraperitoneal Chemotherapy (HIPEC)

Sinziana Dumitra; Byrne Lee

Since its first description by Spratt in 1980 (Cancer Res 40:253–255, 1980) and further refinement by Sugarbaker, cytoreductive surgery complemented by hyperthermic intraperitoneal chemotherapy (HIPEC) (Ann Surg 221:29–42, 1995) has gained popularity and has entered mainstream care for multiple peritoneal surface malignancies including pseudomyxoma peritonei, primary peritoneal carcinomatosis, mesothelioma, peritoneal colorectal carcinomatosis (Int J Colorectal Dis 29:895–898, 2014), peritoneal gastric carcinomatosis (Vet Anaesth Analg 41:386–392, 2014), and more recently ovarian cancer. As the number of HIPEC procedures increases, surgeons are now increasingly facing complications, often in an emergency setting.


Annals of Surgical Oncology | 2017

Erratum to: Is Fecal Diversion Needed in Pelvic Anastomoses During Hyperthermic Intraperitoneal Chemotherapy (HIPEC)?

Matthew D. Whealon; John V. Gahagan; Sarath Sujatha-Bhaskar; Michael P. O’Leary; Matthew J. Selleck; Sinziana Dumitra; Byrne Lee; Maheswari Senthil; Alessio Pigazzi

Background The role of fecal diversion with pelvic anastomosis during cytoreductive surgery (CRS) with hyperthermic intraperitoneal chemotherapy (HIPEC) is not well defined.


Hpb | 2017

Timing and severity of post-discharge morbidity after hepatectomy

Mustafa Raoof; Aaron Lewis; Leanne Goldstein; Sinziana Dumitra; Susanne G. Warner; Gagandeep Singh; Yuman Fong; Laleh G. Melstrom


Annals of Surgical Oncology | 2018

The Comprehensive Complication Index: a New Measure of the Burden of Complications After Hyperthermic Intraperitoneal Chemotherapy

Sinziana Dumitra; Michael P. O’Leary; Mustafa Raoof; Mark T. Wakabayashi; Thanh H. Dellinger; Ernest S. Han; Stephen J. Lee; Byrne Lee


Annals of Surgical Oncology | 2017

Base Excess as a Predictor of Complications in Cytoreductive Surgery with Hyperthermic Intraperitoneal Chemotherapy

Oliver S. Eng; Sinziana Dumitra; Michael P. O’Leary; Mark T. Wakabayashi; Thanh H. Dellinger; Ernest S. Han; Stephen J. Lee; I. Benjamin Paz; Gagandeep Singh; Byrne Lee

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Byrne Lee

City of Hope National Medical Center

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Gagandeep Singh

City of Hope National Medical Center

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Laleh G. Melstrom

City of Hope National Medical Center

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Mustafa Raoof

City of Hope National Medical Center

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Yuman Fong

City of Hope National Medical Center

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Michael P. O’Leary

City of Hope National Medical Center

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Susanne G. Warner

City of Hope National Medical Center

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Ernest S. Han

City of Hope National Medical Center

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Mark T. Wakabayashi

City of Hope National Medical Center

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Stephen J. Lee

City of Hope National Medical Center

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