Timothy D. Lyon

Survey of Applicant Experience and Cost in the Urology Match: Opportunities for Reform

PURPOSE The urology match is highly competitive but there is a paucity of published data regarding the costs and barriers that applicants face. We gathered data on contributors to cost in the 2014 urology residency match. MATERIALS AND METHODS A survey was sent to all applicants offered an interview at each of 18 participating institutions. Information on demographics, interview related costs, access to financial aid, frequency of away rotations and second look invitations was collected. RESULTS A total of 173 respondents spent a median of

Role of µ, κ, and δ Opioid Receptors in Tibial Inhibition of Bladder Overactivity in Cats

7,000 on the urology match. Applicants attended a mean of 14 interviews with an average per interview cost of

Pudendal but not tibial nerve stimulation inhibits bladder contractions induced by stimulation of pontine micturition center in cats

500. Overall 95% of respondents did at least 1 away rotation and 79% reported being asked to return for a second look interview at least once. Of the respondents 66% did not receive any financial aid for interviews and only 28% believed their financial aid departments provided adequate financial planning. Of those surveyed 20% indicated that their financial situation limited the number of interviews they attended. CONCLUSIONS We estimate that

Segmental testicular infarction due to minocycline-induced antineutrophil cytoplasmic antibody--positive vasculitis.

3,122,000 was spent by applicants on the 2014 urology match. One in 5 applicants reported limiting the number of interviews they attended due to financial concerns. Adequate financial planning resources were not widely available. Nearly all applicants went on an away rotation and encouragement to return for second look interviews was common. These factors may contribute to financial and regional bias in the match process, and are potential targets for reform.

Sympathetic β-adrenergic mechanism in pudendal inhibition of nociceptive and non-nociceptive reflex bladder activity

In α-chloralose anesthetized cats, we examined the role of opioid receptor (OR) subtypes (µ, κ, and δ) in tibial nerve stimulation (TNS)-induced inhibition of bladder overactivity elicited by intravesical infusion of 0.25% acetic acid (AA). The sensitivity of TNS inhibition to cumulative i.v. doses of selective OR antagonists (cyprodime for µ, nor-binaltorphimine for κ, or naltrindole for δ ORs) was tested. Naloxone (1 mg/kg, i.v., an antagonist for µ, κ, and δ ORs) was administered at the end of each experiment. AA caused bladder overactivity and significantly (P < 0.01) reduced bladder capacity to 21.1% ± 2.6% of the saline control. TNS at 2 or 4 times threshold (T) intensity for inducing toe movement significantly (P < 0.01) restored bladder capacity to 52.9% ± 3.6% or 57.4% ± 4.6% of control, respectively. Cyprodime (0.3–1.0 mg/kg) completely removed TNS inhibition without changing AA control capacity. Nor-binaltorphimine (3–10 mg/kg) also completely reversed TNS inhibition and significantly (P < 0.05) increased AA control capacity. Naltrindole (1–10 mg/kg) reduced (P < 0.05) TNS inhibition but significantly (P < 0.05) increased AA control capacity. Naloxone (1 mg/kg) had no effect in cyprodime pretreated cats, but it reversed the nor-binaltorphimine–induced increase in bladder capacity and eliminated the TNS inhibition remaining in naltrindole pretreated cats. These results indicate a major role of µ and κ ORs in TNS inhibition, whereas δ ORs play a minor role. Meanwhile, κ and δ ORs also have an excitatory role in irritation-induced bladder overactivity.

Effect of a concomitant urologic procedure on outcomes following cytoreductive surgery with hyperthermic intraperitoneal chemotherapy.

This study examined the possibility that pudendal nerve stimulation (PNS) or tibial nerve stimulation (TNS) inhibits the excitatory pathway from the pontine micturition center (PMC) to the urinary bladder. In decerebrate cats under α-chloralose anesthesia, electrical stimulation of the PMC (40 Hz frequency, 0.2-ms pulse width, 10-25 s duration) using a microelectrode induced bladder contractions >20 cmH2O amplitude when the bladder was filled to 60-70% capacity. PNS or TNS (5 Hz, 0.2 ms) at two and four times the threshold (2T and 4T) to induce anal or toe twitch was applied to inhibit the PMC stimulation-induced bladder contractions. Propranolol, a nonselective β-adrenergic receptor antagonist, was administered intravenously (1 mg/kg i.v.) to determine the role of sympathetic pathways in PNS/TNS inhibition. PNS at both 2T and 4T significantly (P < 0.05) reduced the amplitude and area under the curve of the bladder contractions induced by PMC stimulation, while TNS at 4T facilitated the bladder contractions. Propranolol completely eliminated PNS inhibition and TNS facilitation. This study indicates that PNS, but not TNS, inhibits PMC stimulation-induced bladder contractions via a β-adrenergic mechanism that may occur in the detrusor muscle as a result of reflex activity in lumbar sympathetic nerves. Neither PNS nor TNS activated a central inhibitory pathway with synaptic connections to the sacral parasympathetic neurons that innervate the bladder. Understanding the site of action involved in bladder neuromodulation is important for developing new therapies for bladder disorders.

Short-term Outcomes of Intraoperative Cell Saver Transfusion During Open Partial Nephrectomy.

Segmental testicular infarction is an uncommon clinical entity marked by acute scrotal pain and swelling. Classically, these appear as wedge-shaped, avascular, hypoechoic lesions on a testicular ultrasound. We present a unique case of testicular infarct caused by an antineutrophil cytoplasmic antibody-positive vasculitis secondary to the use of the antibiotic minocycline. The patients symptoms resolved with cessation of minocycline. We suggest that patients who present with otherwise unexplained testicular infarction undergo a careful review of medications to uncover a potential cause.

The Role of Prophylactic Antibiotics After Minimally Invasive Pyeloplasty With Ureteral Stent Placement in Children.

This study investigated the role of the hypogastric nerve and β-adrenergic mechanisms in the inhibition of nociceptive and non-nociceptive reflex bladder activity induced by pudendal nerve stimulation (PNS). In α-chloralose-anesthetized cats, non-nociceptive reflex bladder activity was induced by slowly infusing saline into the bladder, whereas nociceptive reflex bladder activity was induced by replacing saline with 0.25% acetic acid (AA) to irritate the bladder. PNS was applied at multiple threshold (T) intensities for inducing anal sphincter twitching. During saline infusion, PNS at 2T and 4T significantly (P < 0.01) increased bladder capacity to 184.7 ± 12.6% and 214.5 ± 10.4% of the control capacity. Propranolol (3 mg/kg iv) had no effect on PNS inhibition, but 3-[(2-methyl-4-thiazolyl)ethynyl]pyridine (MTEP; 1-3 mg/kg iv) significantly (P < 0.05) reduced the inhibition. During AA irritation, the control bladder capacity was significantly (P < 0.05) reduced to ∼22% of the saline control capacity. PNS at 2T and 4T significantly (P < 0.01) increased bladder capacity to 406.8 ± 47% and 415.8 ± 46% of the AA control capacity. Propranolol significantly (P < 0.05) reduced the bladder capacity to 276.3% ± 53.2% (at 2T PNS) and 266.5 ± 72.4% (at 4T PNS) of the AA control capacity, whereas MTEP (a metabotropic glutamate 5 receptor antagonist) removed the residual PNS inhibition. Bilateral transection of the hypogastric nerves produced an effect similar to that produced by propranolol. This study indicates that hypogastric nerves and a β-adrenergic mechanism in the detrusor play an important role in PNS inhibition of nociceptive but not non-nociceptive reflex bladder activity. In addition to this peripheral mechanism, a central nervous system mechanism involving metabotropic glutamate 5 receptors also has a role in PNS inhibition.

Bipolar Transurethral Incision of Bladder Neck Stenoses with Mitomycin C Injection.

To evaluate whether urologic procedures during cytoreductive surgery with hyperthermic intraperitoneal chemotherapy (CRS‐HIPEC) are associated with adverse postoperative outcomes.

Dorsal Lumbotomy Incision for Partial Nephrectomy in Patients With Small Posterior Renal Masses

OBJECTIVE To determine whether transfusion using the Cell Saver system is associated with inferior outcomes in patients undergoing open partial nephrectomy. METHODS All patients who underwent open partial nephrectomy by a single surgeon (BJD) from August 2008 to April 2015 were retrospectively identified. Operations were grouped and compared according to whether they included a transfusion using the Cell Saver intraoperative cell salvage system. RESULTS Sixty-nine open partial nephrectomies in 67 patients were identified. Thirty-three procedures (48%) included a Cell Saver transfusion. Most tumors were clear cell renal cell carcinoma (62%) and stage T1a (68%). There were no significant differences between groups for any measured clinical or pathologic characteristics. Operations including a Cell Saver transfusion were longer (141 vs 108 minutes, P <.001), had significantly greater blood loss (600 vs 200 mL, P <.001), and had longer median renal ischemia times (15 vs 10 minutes, P = .03). There were no significant differences in postoperative complication rate (21% vs 17%, P = .83) or median length of hospital stay (3 vs 3 days, P = .09). At a median follow-up of 23 months (interquartile range: 8-42 months), 1 patient in the non-Cell Saver transfusion group had cancer recurrence. There was no metastatic progression or cancer-specific mortality in either group. CONCLUSION Cell Saver transfusion during open partial nephrectomy was not associated with inferior outcomes with short-term follow-up, and no patients developed metastatic disease.