-
Journal of Minimal Access Surgery Jan 2024Open, pure or hand-assisted laparoscopic, natural orifice transluminal endoscopic surgical (NOTES) and robotic approaches (Transperitoneal or retroperitoneal) are the...
Open, pure or hand-assisted laparoscopic, natural orifice transluminal endoscopic surgical (NOTES) and robotic approaches (Transperitoneal or retroperitoneal) are the described approaches for living donor nephrectomy. We describe the procedural steps of a robotic living donor nephrectomy (RLDN) retroperitoneal (RRLDN) technique using a da Vinci X surgical system and three robotic arms. This is the first reported case with the retroperitoneal robotic approach. The procedure in brief is as follows. First, with the patient placed in full flank position, the camera port is placed at the level of the Petit's triangle apex. Retroperitoneal space is created by turning the index finger in a 180° movement through this port and a gloves balloon. The second 8mm port was inserted, 8 cm far from the first port, The peritoneum is reflected medially and downward off of the transversus abdominis muscle laparoscopically, respectively along the anterior and posterior axillary line; 3-5 cm caudally to the last one, a 12 mm AirSeal® assistant port is placed in the same manner. Only then, the port is placed under direct vision. The robotic ports placement will result in a caudally convex arc. This technique, due to the extensive use of the surgeon index, implies fast access to the retroperitoneum, protects the underlying anatomical structures from damage, and, due to the trocar positioning along an arc, lowers the arm conflict risk.
PubMed: 37706411
DOI: 10.4103/jmas.jmas_29_23 -
Journal of Interventional Cardiac... Apr 2024Recent anatomic and electrophysiologic evidence has provided new insight into the anatomic substrate. Previous reports on electroanatomic mapping (EAM) of the circuit of...
BACKGROUND
Recent anatomic and electrophysiologic evidence has provided new insight into the anatomic substrate. Previous reports on electroanatomic mapping (EAM) of the circuit of atrioventricular nodal reentrant tachycardia (AVNRT) have been limited by mapping only the triangle of Koch on the right side of the septum and by the use of conventional mapping tools. The objectives are to obtain comprehensive high-resolution mapping of typical AVNRT and to investigate the role of the atrioventricular ring tissues in the circuit.
METHODS
We employed EAM with the use of novel modules and algorithms for studying typical AVNRT from the right and the left sides of the septum.
RESULTS
We performed extensive mapping of both the atrial septum and the septal vestibule of the tricuspid valve during typical AVNRT in 9 (6 females) patients, aged 49.6 ± 12.1 years. In two of these, left septal mapping was also obtained through the aorta. The earliest initial activation was variable, emanating from the superior or medial septum. The impulse consistently appeared below the orifice of the coronary sinus, at the site where its inferoanterior margin merged with the septal vestibule of the tricuspid valve at its entrance to the right atrium. It then returned to the initial activation site, presumably through the septal vestibular myocardium. The left septal activation area corresponded to that recorded on the right side.
CONCLUSIONS
Typical AVNRT uses a circuit confined within the pyramid of Koch from the AV node to the septal isthmus, involving the myocardial walls of the pyramidal space.
Topics: Female; Humans; Tachycardia, Atrioventricular Nodal Reentry; Atrioventricular Node; Heart Atria; Atrial Septum; Myocardium; Catheter Ablation; Electrocardiography
PubMed: 37691082
DOI: 10.1007/s10840-023-01632-7 -
Revista Brasileira de Ortopedia Aug 2023To evaluate the technical reproducibility of a block of the pericapsular nerve group (PENG) of the hip aided or not by ultrasound in cadavers. The present is a...
To evaluate the technical reproducibility of a block of the pericapsular nerve group (PENG) of the hip aided or not by ultrasound in cadavers. The present is a randomized, descriptive, and comparative anatomical study on 40 hips from 2 cadaver groups. We compared the PENG block technique with the method with no ultrasound guidance. After injecting a methylene blue dye, we verified the dispersion and topographical staining of the anterior hip capsule through dissection. In addition, we evaluated the injection orifice in both techniques. In the comparative analysis of the techniques, there were no puncture failures, damage to noble structures in the orifice path, or differences in the results. Only 1 hip from each group (5%) presented inadequate dye dispersion within the anterior capsule, and in 95% of the cases submitted to either technique, there was adequate dye dispersion at the target region. Hip PENG block with no ultrasound guidance is feasible, safe, effective, and highly reliable compared to its conventional counterpart. The present is a pioneer study that can help patients with hip pain from various causes in need of relief.
PubMed: 37663182
DOI: 10.1055/s-0042-1758367 -
Journal of the American Heart... Sep 2023Background Short-term effects on mitral valve (MV) anatomy after transcatheter edge-to-edge repair using the PASCAL system remain unknown. Precise quantification might...
Background Short-term effects on mitral valve (MV) anatomy after transcatheter edge-to-edge repair using the PASCAL system remain unknown. Precise quantification might allow for an advanced analysis of predictors for mean transmitral gradients. Methods and Results Consecutive patients undergoing transcatheter edge-to-edge repair for secondary mitral regurgitation using PASCAL or MitraClip systems were included. Quantification of short-term MV changes throughout the cardiac cycle was performed using peri-interventional 3-dimensional MV images. Predictors for mean transmitral gradients were identified in univariable and multivariable regression analysis. Long-term results were described during 1-year follow-up. A total of 100 patients undergoing transcatheter edge-to-edge repair using PASCAL (n=50) or MitraClip systems (n=50) were included. Significant reductions of anterior-posterior diameter, annular circumference, and area throughout the cardiac cycle were found in both cohorts (<0.05 for all). Anatomic MV orifice area remained larger in the PASCAL cohort in mid (2.8±1.0 versus 2.4±0.9 cm; =0.049) and late diastole (2.7±1.1 versus 2.2±0.8 cm; =0.036) compared with the MitraClip cohort. Besides a device-specific profile of independent predictor of mean transmitral gradients, reduction of middiastolic anatomic MV orifice area was identified as an independent predictor in both the PASCAL (=-0.410; =0.001) and MitraClip cohorts (=-0.318; =0.028). At follow-up, reduction of mitral regurgitation grade to mild or less was more durable in the PASCAL cohort (90% versus 72%; =0.035). Conclusions PASCAL and MitraClip showed comparable short-term effects on MV geometry. However, PASCAL might better preserve MV function and demonstrated more durable mitral regurgitation reduction during follow-up. Identification of independent predictors for mean transmitral gradients might potentially help to guide device selection in the future.
Topics: Humans; Heart Murmurs; Mitral Valve; Mitral Valve Insufficiency
PubMed: 37646220
DOI: 10.1161/JAHA.123.030333 -
Folia Morphologica Aug 2023A single left coronary artery with a single orifice in the left aortic sinus was observed during anatomical practice in an 81-year-old male Japanese cadaver. The single...
A single left coronary artery with a single orifice in the left aortic sinus was observed during anatomical practice in an 81-year-old male Japanese cadaver. The single left coronary artery bifurcated into the anterior interventricular branch (IVa) and circumflex (CXa) branches. The IVa descended into the anterior interventricular sulcus to supply the apex of the heart, leaving a branch that traversed the upper part of the infundibulum to supply the anterior upper region of the right ventricle. The CXa curved leftward in the atrioventricular sulcus to reach the posterior surface, after which it continued to emerge into the anterior surface. The vascular running pattern showed that CXa directly supplied blood to the upper right ventricle (but not the conus branch), with three branches connected to the apex. The atrial arteries showed no anomalous distribution patterns. These findings are useful during surgical procedures, including cardiac catheterization.
PubMed: 37622395
DOI: 10.5603/FM.a2023.0052 -
Europace : European Pacing,... Aug 2023Incomplete left atrial appendage occlusion (LAAO) due to peri-device leak (PDL) is a limitation of the therapy. The Amulet IDE trial is the largest randomized... (Randomized Controlled Trial)
Randomized Controlled Trial
AIMS
Incomplete left atrial appendage occlusion (LAAO) due to peri-device leak (PDL) is a limitation of the therapy. The Amulet IDE trial is the largest randomized head-to-head trial comparing the Amulet and Watchman 2.5 LAAO devices with fundamentally different designs. The predictors and mechanistic factors impacting differences in PDLs within the Amulet IDE trial are assessed in the current analysis.
METHODS AND RESULTS
An independent core lab analysed all images for the presence or absence of severe PDL (>5 mm). The incidence, mechanistic factors, predictors using propensity score-matched controls, and evolution of severe PDLs through 18 months were assessed. Of the 1878 patients randomized in the trial, the Amulet occluder had significantly fewer severe PDLs than the Watchman device at 45 days (1.1 vs. 3.2%, P < 0.001) and 12 months (0.1 vs. 1.1%, P < 0.001). Off-axis deployment or missed lobes were leading mechanistic PDL factors in each device group. Larger left atrial appendage (LAA) dimensions including orifice diameter, landing zone diameter, and depth predicted severe PDL with the Watchman device, with no significant anatomical limitations noted with the Amulet occluder. Procedural and device implant predictors were found with the Amulet occluder attributed to the learning curve with the device. A majority of Watchman device severe PDLs did not resolve over time through 18 months.
CONCLUSION
The dual-occlusive Amplatzer Amulet LAA occluder provided improved LAA closure compared with the Watchman 2.5 device. Predictors and temporal observations of severe PDLs were identified in the Amulet IDE trial.
CLINICAL TRIAL REGISTRATION
https://clinicaltrials.gov Unique identifier NCT02879448.
Topics: Humans; Atrial Appendage; Atrial Fibrillation; Cardiac Surgical Procedures; Treatment Outcome; Septal Occluder Device; Cardiac Catheterization; Stroke
PubMed: 37584233
DOI: 10.1093/europace/euad237 -
Journal of the Canadian Association of... Aug 2023Identification and photo-documentation of the ileocecal valve (ICV) and appendiceal orifice (AO) confirm completeness of colonoscopy examinations. We aimed to develop...
BACKGROUND AND AIMS
Identification and photo-documentation of the ileocecal valve (ICV) and appendiceal orifice (AO) confirm completeness of colonoscopy examinations. We aimed to develop and test a deep convolutional neural network (DCNN) model that can automatically identify ICV and AO, and differentiate these landmarks from normal mucosa and colorectal polyps.
METHODS
We prospectively collected annotated full-length colonoscopy videos of 318 patients undergoing outpatient colonoscopies. We created three nonoverlapping training, validation, and test data sets with 25,444 unaltered frames extracted from the colonoscopy videos showing four landmarks/image classes (AO, ICV, normal mucosa, and polyps). A DCNN classification model was developed, validated, and tested in separate data sets of images containing the four different landmarks.
RESULTS
After training and validation, the DCNN model could identify both AO and ICV in 18 out of 21 patients (85.7%). The accuracy of the model for differentiating AO from normal mucosa, and ICV from normal mucosa were 86.4% (95% CI 84.1% to 88.5%), and 86.4% (95% CI 84.1% to 88.6%), respectively. Furthermore, the accuracy of the model for differentiating polyps from normal mucosa was 88.6% (95% CI 86.6% to 90.3%).
CONCLUSION
This model offers a novel tool to assist endoscopists with automated identification of AO and ICV during colonoscopy. The model can reliably distinguish these anatomical landmarks from normal mucosa and colorectal polyps. It can be implemented into automated colonoscopy report generation, photo-documentation, and quality auditing solutions to improve colonoscopy reporting quality.
PubMed: 37538187
DOI: 10.1093/jcag/gwad017 -
International Forum of Allergy &... Mar 2024Eustachian tube dysfunction (ETD) may occur distinct from, or in conjunction with, chronic rhinosinusitis (CRS+ETD). Intranasal corticosteroid sprays are often...
Accessing the Eustachian tube: Conventional nasal spray vs. exhalation delivery system and the impact of targeted endoscopic sinus surgery on topical distribution patterns.
BACKGROUND
Eustachian tube dysfunction (ETD) may occur distinct from, or in conjunction with, chronic rhinosinusitis (CRS+ETD). Intranasal corticosteroid sprays are often prescribed for ETD, although ET distribution may be limited. To date, no anatomic studies compare nasopharynx (NP) distribution between conventional nasal sprays (NS) and exhalation delivery systems (EDS) after surgery. This study utilizes a cadaver model to examine topical NP delivery using EDS vs. NS before and after targeted endoscopic sinus surgery (ESS).
METHODS
Sixteen sinonasal cavities were administered fluorescein solution via NS and EDS before and after maxillary antrostomy and anterior ethmoidectomy, followed by nasal endoscopy of the NP and ET orifice. Seven blinded experts submitted staining ratings of endoscopy images on a 0- to 3-point scale, with ratings averaged for analysis.
RESULTS
Interrater reliability was excellent (intraclass correlation, 0.956). EDS was associated with significantly greater NP staining vs. NS in a pooled cohort of nonsurgical and ESS specimens (1.19 ± 0.81 vs. 0.78 ± 1.06; p = 0.043). Using a logistic regression model, EDS significantly outperformed NS in nonsurgical (odds ratio [OR], 3.49; 95% confidence interval [CI], 1.21-10.09; p = 0.021) and post-ESS (OR, 9.00; 95% CI, 1.95-41.5; p = 0.005) specimens, with the greatest relative staining observed for EDS after targeted ESS (OR, 18.99; 95% CI, 3.44-104.85; p = 0.001).
CONCLUSIONS
EDS is more effective than NS in topical delivery to the NP and ET orifices in cadavers. Targeted ESS may facilitate greater NP penetration by EDS compared with NS, with possible synergism after ESS for augmented delivery. These findings suggest a role for EDS delivery methods for ETD management and in CRS+ETD patients undergoing sinus surgery.
Topics: Humans; Nasal Sprays; Eustachian Tube; Exhalation; Reproducibility of Results; Endoscopy; Chronic Disease; Rhinitis; Nasal Polyps
PubMed: 37533194
DOI: 10.1002/alr.23248 -
World Journal of Surgery Oct 2023Transoral approaches in surgery are gaining global popularity. Transoral endoscopic and robotic thyroidectomies are well established due to the benefit of being truly...
OBJECTIVE
Transoral approaches in surgery are gaining global popularity. Transoral endoscopic and robotic thyroidectomies are well established due to the benefit of being truly scarless. Thyroid chondrolaryngoplasty reduces protrusion of the thyroid notch in transgender patients. The Sistrunk operation involves removal of the thyroglossal cyst and the central portion of the hyoid bone. In this cadaveric study, we developed a transoral thyroidectomy approach and assessed the feasibility of applying this technique to thyroid chondrolaryngoplasty and Sistrunk operation with the proper usage of a special endoscopic burr.
METHODS
We performed surgery using the transoral vestibular approach with 13 fresh-frozen human cadavers. Unlike transoral thyroid surgery, which requires high-resolution detailed anatomical view, this technique uses a 5-mm 30-degree endoscope with a 5-mm central port. A smaller central port can reduce the risk of mental nerve paresthesia. A special endoscopic burr for functional endoscopic sinus surgery is used to thin the thyroid notch cartilage and cut the central portion of the hyoid bone.
RESULTS
We successfully performed transoral thyroid chondrolaryngoplasty and transoral Sistrunk operation in 13 cadavers.
CONCLUSION
Transoral chondrolaryngoplasty and transoral Sistrunk operation are feasible for transgender or thyroglossal cyst patients. It offers the additional benefit of being a scarless surgery and could play a promising role in minimally invasive thyroid surgeries. Proper use of an endoscopic drilling burr to thin thyroid notch cartilage and cutting the central portion of the hyoid bone can make transoral thyroid chondrolaryngoplasty and transoral Sistrunk operation safe and feasible .
Topics: Humans; Thyroidectomy; Thyroid Gland; Thyroglossal Cyst; Endoscopy; Cadaver; Natural Orifice Endoscopic Surgery
PubMed: 37488333
DOI: 10.1007/s00268-023-07091-5