4 results on '"Ankur Dhar"'
Search Results
2. Basic evaluation for sacroneuromodulation with the novel use of an in-line camera to guide lead insertion
- Author
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Henry Wang, Ankur Dhar, Apisara Kulapvirat, and Audrey Wang
- Subjects
Basic Evaluation ,Sacroneuromodulation ,In-line camera ,Surgery ,RD1-811 ,Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
Background: Sacroneuromodulation (SNM) is a technique that simulates sacral spinal nerve roots with the goal of modulating afferent neural pathways. While the exact mechanism of effect is incompletely understood, it is an effective treatment in several pelvic floor disorders including Overactive Bladder (OAB), voiding dysfunction and non-obstructive urinary retention. The placement of SNM leads is guided by fluoroscopy or anatomical landmarks. The preferred target is the S3 sacral nerve. Correct placement is confirmed through obtaining the desired motor responses of anal bellows and toe dorsiflexion. Objective: To demonstrate our operative technique for SNM lead placement, including theatre set-up, use of fluoroscopy, identification of relevant anatomical landmarks and the novel use of an in-line camera to guide lead placement. Additionally, we demonstrate the motor findings associated with the target S3, and inadvertent S2 nerve stimulation. Patient and Surgical Procedure: We routinely perform basic evaluation trials for confirmation of symptomatic improvement (50% or greater), prior to single stage system implantation. We utilise the Medtronic Interstim device (Minneapolis, MN). Fluoroscopy and an additional in-line camera are used to guide all lead insertions. Confirmation of correct lead placement is achieved through visualisation of the desired motor responses. Additionally, stimulus amplitudes of less than 2 Vs are desired. Results: The use of an in-line camera acts as an additional reference point, allowing the operator to maintain an optimal craniocaudal angle during needle insertion. This is particularly useful in patients with a high BMI, where operator vision is limited, and early in the learning curve for trainees. Motor findings associated with both inadvertent S2, and the target S3 nerve stimulation are also demonstrated in a real-time case. Conclusion: Fluoroscopy and the use of an in-line camera allows for efficient SNM lead placement into the S3 sacral foramen.
- Published
- 2023
- Full Text
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3. The perils of penile enhancement: case report of a fulminant penile infection
- Author
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Alistair Cameron-Strange, Ankur Dhar, and Nicole Wen Mun Khor
- Subjects
Adult ,Male ,medicine.medical_specialty ,Streptococcus pyogenes ,Urology ,Hyaluronic acid ,Necrotising fasciitis ,Context (language use) ,Case Report ,Penile diseases ,Urologic diseases ,Infections ,law.invention ,Injections ,law ,Intensive care ,Dermal Fillers ,Streptococcal Infections ,medicine ,Humans ,Abscess ,business.industry ,General Medicine ,medicine.disease ,Intensive care unit ,Diseases of the genitourinary system. Urology ,Surgery ,Anti-Bacterial Agents ,medicine.anatomical_structure ,Reproductive Medicine ,Anuria ,RC870-923 ,medicine.symptom ,Penile Infection ,business ,Penis - Abstract
Background Penile enhancement with injectable agents is a rising trend and yet has received little scientific attention despite the potential for serious complications. These include cosmetic, functional and systemic complications that may require complex penile reconstructive surgery. We report a case of delayed severe infection following penile filler insertion leading to multi-organ failure and intensive care support. Case presentation A 31-year-old man presented with fevers and progressive pain and swelling of the penile shaft, 3 days after unprotected sexual intercourse. The patient received subcutaneous hyaluronic filler injections at a cosmetic clinic for penile enlargement two months prior to presentation. Relevant social history include polysubstance abuse and multiple sexual partners. Physical examination revealed gross penile oedema and erythema, with a ventral curvature of the penile shaft and a superficial abrasion on the distal ventral penile shaft. Within 24 h the patient developed septic shock with anuria, hypotension and fevers to 40 °C, requiring transfer to the Intensive Care Unit (ICU) for vasopressor and inotropic support. Intraoperative penile exploration revealed multiple pus stained fillers which were drained and grew Streptococcus Pyogenes on cultures. There was no abscess or evidence of necrotising fasciitis intraoperatively. The patient improved with intravenous antibiotics and was stepped down from the ICU after four days and discharged on day eight. One month post admission there was significant superficial skin loss to both ventral and lateral aspect of the penis, with healthy granulation tissue at the base. The patient opted for conservative management with regular dressings. He reported normal sexual and urinary function three months post admission. Conclusion This is the first published case of sepsis from a penile infection in the context of hyaluronic acid penile fillers. In an era of escalating demand for penile cosmetic procedures, there is an increasing need for early recognition and appropriate management of penile filler infections. We report an unusual case of a localised penile infection rapidly progressing to sepsis with multi-organ failure requiring intensive care support. The case demonstrates early surgical intervention with targeted antimicrobials can result in successful eradication of infection, with satisfactory cosmetic and functional outcomes for patients.
- Published
- 2021
4. The utility of preoperative and intraoperative cultures for guiding urosepsis empirical treatment
- Author
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Brielle E Wood, David Habashy, Claire Purvis, Timothy Skyring, Darren J Mayne, and Ankur Dhar
- Subjects
medicine.medical_specialty ,medicine.diagnostic_test ,business.industry ,Urology ,General surgery ,030232 urology & nephrology ,medicine.disease ,Sepsis ,Empirical treatment ,03 medical and health sciences ,0302 clinical medicine ,030220 oncology & carcinogenesis ,medicine ,Surgery ,Instrumentation (computer programming) ,Ureteroscopy ,business ,Upper urinary tract - Abstract
Objective: Endoscopic upper urinary tract instrumentation is a common urological procedure; often associated with prior ureteric stenting and postoperative urosepsis. This study aimed to explore the clinical utility of preoperative urine and intraoperative urine and ureteric stent cultures in the management of urosepsis post upper urinary tract instrumentation. Methods: Prospective study involving pre-stented patients whose upper urinary tract was instrumented at a single centre between 2017 and 2018. Five cultures were collected per patient. Patients were tracked for development of postoperative urosepsis. Results: The study included 227 patients, with a 5.7% postoperative urosepsis rate. Risk of urosepsis was significantly associated with female gender, steroid use and having a colonized preoperative urine culture, intraoperative bladder urine or stent-end culture, or kidney urine culture. Patients with a colonized intraoperative bladder urine were 11 times more likely to develop urosepsis and were colonized with the same organism isolated from urosepsis cultures for 50% of cases. Conclusions: To our knowledge this is the largest cohort study which analyses five different urinary tract cultures and the relationship with postoperative urosepsis. A positive intraoperative bladder urine culture is an independent predictor of postoperative urosepsis development and causative organism, which could guide antibiotic management for these patients. Level of Evidence 3-b
- Published
- 2019
- Full Text
- View/download PDF
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