Publications by authors named "Smita De"

Medical management of recurrent kidney stones utilizes 24-hour urine testing to guide counseling and therapy. Poor socioeconomic status is a well-established risk factor for urolithiasis; however, associations are often based on complex statistics not readily accessible in clinical practice. Area Deprivation Index (ADI) is a quantitative measure of socioeconomic status based on United States census variables reflecting neighborhood disadvantage and is reportable in the electronic medical record.

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Objective: To measure patient knowledge about Benign prostatic hyperplasia (BPH) and identify factors associated with knowledge deficiencies among those newly presenting to our urology clinic.

Methods: Adult men presenting as new patients to our institution's urology clinic, regardless of chief complaint, were invited to complete a 26-item multiple choice questionnaire to assess basic knowledge about BPH, related symptomatology, and treatment options prior to their initial consultation. Responses were correlated to demographic variables using Analysis of Variance (ANOVA) and multivariable linear modeling.

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Objective: To compare neonatal outcomes following URS, stent, or PCN in pregnant women presenting with suspected renal colic.

Methods: Women undergoing a procedure for suspected renal colic during pregnancy at a large multi-center institution between 2008 and 2022 were retrospectively reviewed and categorized by initial intervention. Neonatal outcomes were recorded and linked to maternal and obstetric data.

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Introduction: Anesthesia choice during the procedural management of suspected renal colic during pregnancy may vary based on available resources and patient or provider preferences, as there are no specific recommendations. Our objective was to evaluate whether preterm birth (<37 weeks) was associated with anesthesia type, anesthesia timing by trimester, or procedure type.

Methods: We retrospectively identified pregnant patients who required procedural management with ureteral stent, percutaneous nephrostomy (PCN), or ureteroscopy (URS) for suspected renal colic based on laboratory and imaging findings from 2009-2021 at our center.

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Objective: To compare post-operative outcomes in patients who underwent holmium laser enucleation of the prostate (HoLEP) for benign prostatic hyperplasia (BPH) and had urodynamic evidence of bladder hypocontractility versus those with normocontractile bladders.

Methods: We retrospectively reviewed HoLEP patients with pre-operative urodynamic studies at a single institution, categorizing them into normocontractile and hypocontractile groups based on the bladder contractility index (BCI) (hypocontractile defined as BCI < 100). Post-void residual (PVR) volume was measured at 6 weeks and 6 months.

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Article Synopsis
  • There is a lack of guidelines for antibiotic use in patients with benign prostatic hyperplasia undergoing HoLEP, particularly for high-risk individuals who are catheter-dependent or have positive urine cultures.
  • A study was conducted analyzing the impact of preoperative antibiotic duration on infectious complications in these high-risk patients, involving a review of 407 cases from five institutions between 2018 and 2023.
  • Results showed that patients on a long course of antibiotics (>3 days) had significantly fewer infectious complications (1.9%) compared to those on a short course (≤3 days) at 7.6%, suggesting a longer duration may be beneficial in preventing infections.
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Proof-of-concept of photonic lithotripsy in an in vitro setting and its ability to fragment the most common stone types is demonstrated. Effectiveness of different classes of photonic nanoparticles in fragmenting human stones is assessed. De-identified human stones were collected after institutional approval.

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Background: Female urologists report higher rates of work-related physical discomfort compared to male urologists. We compared ergonomics during simulated ureteroscopy, the most common surgery for kidney stones, between male and female urologists.

Methods: Surface electromyography was used to measure muscle activation during common ureteroscopic tasks in urology trainees and staff with different surgeon positions and ureteroscopes.

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National guidelines recommend periprocedural antibiotics before percutaneous nephrolithotomy (PCNL), yet it is not clear which is superior. We conducted a randomized trial to compare two guideline-recommended antibiotics: ciprofloxacin (cipro) cefazolin, on PCNL outcomes, focusing on the development of systemic inflammatory response syndrome (SIRS) criteria. Adult patients who were not considered high risk for surgical or infectious complications and undergoing PCNL were randomized to receive either cipro or cefazolin perioperatively.

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Objective: To evaluate if videos during laser lithotripsy increase accuracy and confidence of stone identification by urologists compared to still pictures.

Methods: We obtained representative pictures and videos of 4 major stone types from 8 different patients during ureteroscopy with holmium laser lithotripsy. A REDCap survey was created and emailed to members of the Endourological Society.

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Article Synopsis
  • * Out of 100 reviewed patients, 78 were analyzed, revealing that those who underwent PCN had the highest total mean radiation exposure (286.9 mGy) and required significantly more procedures compared to the other two interventions.
  • * The results indicated that PCN not only led to higher radiation exposure but also resulted in more complications, with over 40% of PCNs experiencing dysfunction and an average exchange period of 16.5 days.
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Objective: To evaluate peri-operative outcomes in patients on chronic aspirin therapy undergoing percutaneous nephrolithotomy (PCNL), with and without discontinuation of aspirin. Anti-coagulation and anti-platelet therapy are contraindications for PCNL per American Urological Association guidelines due to bleeding risk. However, there is potentially increased cardiovascular risk with peri-procedural aspirin withdrawal.

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Objective: To describe the current demographics, needs, and challenges of women in Urology throughout the United States, including active Urologists as well as urologic trainees.

Methods: An electronic survey was distributed via email and social media sites to all members of the Society of Women in Urology, including residents, fellows, and female urologists practicing in the US and its territories, between February 2022 and May 2022. The survey collected information on demographics, practice type, workplace, personal, family issues, barriers, and career plans from all respondents.

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Objective: To compare the perioperative outcomes of transvesical single-port robotic simple prostatectomy (SP-RASP) and holmium laser enucleation of the prostate (HoLEP).

Materials And Methods: A retrospective review was performed of patients undergoing SP-RASP and HoLEP from 2019 to 2022 with preoperative prostatic volume (PPV) >80 cm. Percent of prostate adenoma removed (%PAR) was estimated by specimen weight normalized by PPV.

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Near-infrared activated nanomaterials have been reported for biomedical applications ranging from photothermal tumor destruction to biofilm eradication and energy-gated drug delivery. However, the focus so far has been on soft tissues, and little is known about energy delivery to hard tissues, which have thousand-fold higher mechanical strength. We present photonic lithotripsy with carbon and gold nanomaterials for fragmenting human kidney stones.

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Purpose: We sought to determine microbe-metabolite composition and interactions within indwelling ureteral stent biofilms, determine their association with patient factors including infection, and reconstitute biofilm formation on relevant surface materials in vitro.

Materials And Methods: Upon ureteral stent removal from patients, proximal and distal ends were swabbed. Samples were analyzed by 16S next-generation sequencing and metabolomics.

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Kidney stone cultures can be beneficial in identifying bacteria not detected in urine, yet how stone cultures are performed among endourologists, under what conditions, and by what laboratory methods remain largely unknown. Stone cultures are not addressed by current clinical guidelines. A comprehensive REDCap electronic survey sought responses from directed (n = 20) and listserv elicited (n = 108) endourologists specializing in kidney stone disease.

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Objective: To assess the effects of different surgeon positions and ureteroscope types on muscle activation as measured by surface electromyography (sEMG) during simulated ureteroscopy in an endourology box-trainer model and the kidney phantom.

Methods: For this exploratory study, sEMG was used to quantify muscle activation of 3 endourology fellows during various ureteroscopic tasks. Electrodes were placed on the ureteroscope-holding side of the following muscles: thenar, forearm flexor, forearm extensor, biceps, triceps, deltoid, and trapezius.

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Introduction: Ureteral stent-related symptoms are common after stent placement. Various characteristics of stent design have been previously investigated to mitigate this issue. Our review summarizes available literature on stent design parameters (diameter, material, position, length, distal loop modifications) and their effect on stent-related symptoms, including pain.

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Synopsis of recent research by authors named "Smita De"

  • Smita De's recent research primarily focuses on the management of renal colic during pregnancy, exploring the implications of various interventions and anesthesia types on neonatal outcomes and preterm births.
  • Another significant area of her work examines clinical outcomes of different surgical techniques, specifically holmium laser enucleation of the prostate, comparing effectiveness and complications in patients with varying bladder contractility.
  • De is also investigating innovative approaches to treat urolithiasis through nanotechnology and photonic treatments, contributing to advancements in minimally invasive procedures for kidney stones.

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