Bibliographic record
Abstract
Insertion of urodynamic catheter is quite straightforward in most cases. However, in patients with previous transurethral resection of the prostate, high bladder neck, prostatic enlargement or urethral strictures, this catheterization can be challenging and sometimes impossible. Here is a simple procedure using a flexible cystoscope to overcome this problem. Cystometrogram, urodynamics or video-urodynamics are part of most urology units across Canada. These tests are performed in the urology suite as an outpatient procedure. The flexible cystoscopy is performed in the same suite in most places and is easily available. Occasionally, the urologist is called by the urology technician to help in difficult insertions of the urodynamics catheter. I use the flexible cystoscope and grasping forceps to overcome this problem. To my knowledge, this technique has not been previously described. The grasping forceps is passed through the working channel of the flexible cystoscope and the tip of the urodynamic catheter is grasped with the grasping forceps (Fig. 1, Fig. 2, Fig. 3). The scope with the catheter in the grasper is then inserted in the urethra and under direct vision threaded up to the bladder. The catheter is released from the grasper, which is then removed. The cystoscope is removed while holding the urodynamic catheter so that the catheter does not slide out with the scope. This technique has been helpful in difficult cases. Fig. 1. Left to right: Ends of cystoscope, urodynamic catheter, grasper. Fig. 2. Left to right: Cystoscope, urodynamic catheter, grasper. Fig. 3. Assembled instruments prior to insertion into urethra. If difficulty is encountered during catheterization with the urodynamic catheter, a flexible cystoscope and grasper are all that is required to overcome this problem in a very simple way.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.003 |
| Meta-epidemiology (narrow) | 0.002 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.002 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.002 | 0.001 |
| Scholarly communication | 0.001 | 0.004 |
| Open science | 0.001 | 0.002 |
| Research integrity | 0.003 | 0.004 |
| Insufficient payload (model declined to judge) | 0.019 | 0.022 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".