-
European Heart Journal. Case Reports Dec 2023Closure of the left atrial appendage (LAA) using a clip in at-risk patients reduces stroke risk. The rate of LAA closure procedures is increasing worldwide; however,...
BACKGROUND
Closure of the left atrial appendage (LAA) using a clip in at-risk patients reduces stroke risk. The rate of LAA closure procedures is increasing worldwide; however, complications have been reported, with coronary compression being one possible lethal complication associated with the anatomical structures around the LAA.
CASE SUMMARY
A 75-year-old man presented with a diagnosis of a φ50 mm saccular thoracic aortic aneurysm. He had a history of chronic atrial fibrillation and functional tricuspid regurgitation. We performed total arch replacement with an open stent graft, tricuspid ring annuloplasty, left atrium Maze procedure, left atrial plication, and LAA closure using a LAA clip. The blood pressure of the patient dropped after closing the pericardium post-operatively. Coronary artery angiography (CAG) confirmed 90% stenosis at the left coronary main trunk (LMT) origin. Percutaneous coronary intervention (PCI) was performed, and the haemodynamics settled.
DISCUSSION
The distance from the anterior wall of the LAA ostium to the LMT can be a risk for AtriClip-induced LMT compression. A different surgical strategy, such as internal sutures or surgical stapler for LAA closure, should be considered under such a condition. Selecting an appropriately sized AtriClip is essential while using the clip, placing it close to the orifice, and visually checking for compression after insertion to prevent LMT stenosis. When LMT compression by the clip was confirmed, levelling the endocardial adipose tissue with the LAA landing zone, cutting and removing the clip or coronary artery bypass grafting during operation, and PCI during CAG should be considered.
PubMed: 38089128
DOI: 10.1093/ehjcr/ytad595 -
Cirugia Espanola May 2023In this review, the advantages of the robotic platform in rTAPP are presented and discussed. Against the background of the unchanged results of conventional TAPP for... (Review)
Review
Laparoscopic TAPP to treat inguinal hernia. Is the robot preferable? A review and cohort-study on anatomical landmarks of robotic-assisted transabdominal preperitoneal groin hernia repair (r-TAPP).
In this review, the advantages of the robotic platform in rTAPP are presented and discussed. Against the background of the unchanged results of conventional TAPP for decades (approx. 10% chronic pain and approx. 3.5% recurrence), a new anatomy-guided concept for endoscopic inguinal hernia repair with the robot is presented. The focus is on the identification of Hesselbach's ligament. The current results give hope that the results of TAPP can be improved by rTAPP and that rTAPP is not just a more expensive version of conventional TAPP. To support the rationale presented here, we analyzed 132 video recordings of rTAPP's for the anatomical structures depicted therein. The main finding is, that in all cases (132/132 or 100%) Hesselbach's ligament was present and following its lateral continuity with the ileopubic tract offered a safe framework to develop all the critical anatomical structures for clearing the myopectineal orifice, repair the posterior wall of the groin and perform a flawless mesh fixation. Future studies are needed to integrate all the resources of the robotic platform into an rTAPP concept that will lead out of the stalemate of the indisputably high rate of chronic pain and recurrences.
Topics: Humans; Hernia, Inguinal; Groin; Chronic Pain; Robotic Surgical Procedures; Robotics; Herniorrhaphy; Laparoscopy
PubMed: 38042590
DOI: 10.1016/j.cireng.2023.01.010 -
Clinical Anatomy (New York, N.Y.) Mar 2024The left atrial appendage (LAA) is well known as a source of cardiac thrombus formation. Despite its clinical importance, the LAA neck is still anatomically poorly...
The left atrial appendage (LAA) is well known as a source of cardiac thrombus formation. Despite its clinical importance, the LAA neck is still anatomically poorly defined. Therefore, this study aimed to define the LAA neck and determine its morphometric characteristics. We performed three-dimensional reconstructions of the heart chambers based on contrast-enhanced electrocardiography-gated computed tomography scans of 200 patients (47% females, 66.5 ± 13.6 years old). The LAA neck was defined as a truncated cone-shaped canal bounded proximally by the LAA orifice and distally by the lobe origin and was present in 98.0% of cases. The central axis of the LAA neck was 14.7 ± 2.3 mm. The mean area of the LAA neck walls was 856.6 ± 316.7 mm . The LAA neck can be divided into aortic, arterial (the smallest), venous (the largest), and free surfaces. All areas have a trapezoidal shape with a broader proximal base. There were no statistically significant differences in the morphometric characteristics of the LAA neck between LAA types. Statistically significant differences between the sexes in the main morphometric parameters of the LAA neck were found in the central axis length and the LAA neck wall area. The LAA neck can be evaluated from computed tomography scans and their three-dimensional reconstructions. The current study provides a complex morphometric analysis of the LAA neck. The precise definition and morphometric details of the LAA neck presented in this study may influence the effectiveness and safety of LAA exclusion procedures.
Topics: Female; Humans; Middle Aged; Aged; Aged, 80 and over; Male; Atrial Fibrillation; Atrial Appendage; Tomography, X-Ray Computed; Arteries
PubMed: 38031393
DOI: 10.1002/ca.24125 -
MedRxiv : the Preprint Server For... Nov 2023TAVR has emerged as a standard approach for treating severe aortic stenosis patients. However, it is associated with several clinical complications, including...
PURPOSE
TAVR has emerged as a standard approach for treating severe aortic stenosis patients. However, it is associated with several clinical complications, including subclinical leaflet thrombosis characterized by Hypoattenuated Leaflet Thickening (HALT). A rigorous analysis of TAVR device thrombogenicity considering anatomical variations is essential for estimating this risk. Clinicians use the Sinotubular Junction (STJ) diameter for TAVR sizing, but there is a paucity of research on its influence on TAVR devices thrombogenicity.
METHODS
A Medtronic Evolut® TAVR device was deployed in three patient models with varying STJ diameters (26, 30, and 34mm) to evaluate its impact on post-deployment hemodynamics and thrombogenicity, employing a novel computational framework combining prosthesis deployment and fluid- structure interaction analysis.
RESULTS
The 30 mm STJ patient case exhibited the best hemodynamic performance: 5.94 mean transvalvular pressure gradient (TPG), 2.64 mean geometric orifice area (GOA), and the lowest mean residence time (T ) - indicating a reduced thrombogenic risk; 26 mm STJ exhibited a 10 % reduction in GOA and a 35% increase in mean TPG compared to the 30 mm STJ; 34 mm STJ depicted hemodynamics comparable to the 30 mm STJ, but with a 6% increase in T and elevated platelet stress accumulation.
CONCLUSION
A smaller STJ size impairs adequate expansion of the TAVR stent, which may lead to suboptimal hemodynamic performance. Conversely, a larger STJ size marginally enhances the hemodynamic performance but increases the risk of TAVR leaflet thrombosis. Such analysis can aid pre- procedural planning and minimize the risk of TAVR leaflet thrombosis.
PubMed: 38014278
DOI: 10.1101/2023.11.13.23298476 -
Acta Neurochirurgica Dec 2023The inferior petrosal sinus (IPS) is the transvenous access route for neurointerventional surgery that is occasionally undetectable on digital subtraction angiography...
Angiographic evaluation of the distance from the top of the jugular bulb to the inferior petrosal sinus-internal jugular vein junction: simple classification and identification method for the orifice of the non-visualized inferior petrosal sinus during neuroendovascular surgery.
BACKGROUND
The inferior petrosal sinus (IPS) is the transvenous access route for neurointerventional surgery that is occasionally undetectable on digital subtraction angiography (DSA) because of blockage by a clot or collapse. This study was aimed at analyzing the distance from the jugular bulb (JB) to the IPS-internal jugular vein (IJV) junction and proposing a new anatomical classification system for the IPS-IJV junction to identify the non-visualized IPS orifice.
METHODS
DSA of 708 IPSs of 375 consecutive patients were retrospectively investigated to calculate the distance from the top of the JB to the IPS-IJV junction, and a simple classification system based on this distance was proposed.
RESULTS
The median distance from the top of the JB to the IPS-IJV junction was 20.8 ± 14.7 mm. Based on the lower (10.9 mm) and upper (31.1 mm) quartiles, IPS-IJV junction variants were: type I, 0-10 mm (22.3%); type II, 11-30 mm (45.8%); type III, > 31 mm (23.9%); and type IV, no connection to the IJV (8.0%). Bilateral distances showed a positive interrelationship, with a correlation coefficient of 0.86. The bilateral symmetry type (visualized IPSs bilaterally) according to our classification occurred in 267 of 300 (89.0%) patients.
CONCLUSIONS
In this study, the IPS-IJV junction was located far from the JB (types II and III), with a higher probability (69.6%). This distance and the four-type classification demonstrated high degrees of homology with the contralateral side. These results would be useful for identifying the non-visualized IPS orifice.
Topics: Humans; Jugular Veins; Retrospective Studies; Cranial Sinuses; Angiography; Thrombosis
PubMed: 37945999
DOI: 10.1007/s00701-023-05887-x -
European Journal of Medical Research Nov 2023The hypoglossal canal is a dual bone canal at the cranial base near the occipital condyles. The filaments of the hypoglossal nerve pass through the canal. It also...
BACKGROUND
The hypoglossal canal is a dual bone canal at the cranial base near the occipital condyles. The filaments of the hypoglossal nerve pass through the canal. It also transmits the meningeal branch of the ascending pharyngeal artery, the venous plexus and meningeal branches of the hypoglossal nerve. The hypoglossal nerve innervates all the intrinsic and extrinsic muscles of the tongue except the palatoglossal and is fundamental in physiological functions as phonation and deglutition. A surgical approach to the canal requires knowledge of the main morphometric data by neurosurgeons.
METHODS
The present study was carried out on 50 adult dried skulls: 31 males: age range 18-85 years; 19 females: age range 26-79 years. The skulls came from the ''Leonetto Comparini'' Anatomical Museum. The skulls belonged to people from Siena (Italy) and its surroundings (1882-1932) and, therefore, of European ethnicity. The present study reports (a) the osteological variations in hypoglossal canal (b) the morphometry of hypoglossal canal and its relationship with occipital condyles. One skull had both the right and left hypoglossal canals occluded and, therefore, could not be evaluated. None of the skulls had undergone surgery.
RESULTS
We found a double canal in 16% of cases, unilaterally and bilaterally in 2% of cases. The mean length of the right and left hypoglossal canals was 8.46 mm. The mean diameter of the intracranial orifice and extracranial orifice of the right and left hypoglossal canals was 6.12 ± 1426 mm, and 6.39 ± 1495 mm. The mean distance from the intracranial end of the hypoglossal canal to the anterior and posterior ends of occipital condyles was 10,76 mm and 10,81 mm. The mean distance from the intracranial end of the hypoglossal canal to the inferior end of the occipital condyles was 7,65 mm.
CONCLUSIONS
The study on the hypoglossal canal adds new osteological and morphometric data to the previous literature, mostly based on studies conducted on different ethnic groups.The data presented is compatible with neuroradiological studies and it can be useful for radiologists and neurosurgeons in planning procedures such as transcondilar surgery. The last purpose of the study is to build an Italian anatomical data base of the dimensions of the hypoglossal canal in dried skulls..
Topics: Male; Adult; Female; Humans; Adolescent; Young Adult; Middle Aged; Aged; Aged, 80 and over; Cadaver; Occipital Bone; Hypoglossal Nerve; Heart; Italy
PubMed: 37941031
DOI: 10.1186/s40001-023-01489-6 -
Australian Endodontic Journal : the... Apr 2024This study investigated the prevalence of the middle mesial canal (MMC) and isthmus in a northern Chinese subpopulation using cone-beam computed tomography (CBCT). CBCT...
This study investigated the prevalence of the middle mesial canal (MMC) and isthmus in a northern Chinese subpopulation using cone-beam computed tomography (CBCT). CBCT images of 1060 mandibular first molars (MFMs) were analysed. Data analysis was performed using the chi-square test, t-test, and multiple logistic regression analysis (p < 0.05). The prevalence of MMC and isthmus was 15.2% and 40.6%, respectively. The average dentinal thickness in the danger zone was 1.61 ± 0.14 mm. Patients younger than 40 years were two times more likely to have MMC (odds ratio [OR] = 2.204). Additionally, for every 1 mm reduction in the MB-ML orifice distance, the likelihood of detection of MMC in MFM nearly doubled (OR = 1.738). Furthermore, MFMs with MB-ML isthmus were five times more likely to exhibit MMC than those without it (OR = 4.756). The findings revealed that the prevalence of MMC and isthmus in MFMs is high and suggested that anatomical and demographic variables can serve as valuable indicators for clinicians in anticipating their presence.
Topics: Humans; Prevalence; Spiral Cone-Beam Computed Tomography; Mandible; Tooth Root; Dental Pulp Cavity; Molar; Cone-Beam Computed Tomography; China
PubMed: 37902140
DOI: 10.1111/aej.12807 -
Archives of Oral Biology Dec 2023To evaluate and compare several anatomical parameters of mandibular first premolars from individuals from different Latin American countries using micro-computed...
OBJECTIVE
To evaluate and compare several anatomical parameters of mandibular first premolars from individuals from different Latin American countries using micro-computed tomography.
DESIGN
Five hundred extracted mandibular first premolars from Brazilian, Argentinian, Chilean, Colombian, and Ecuadorian individuals were scanned using micro-computed tomography (n = 100 teeth/country). Root canal configurations were classified according to established parameters. Analyses also included: canal volume and surface area, structure model index, distances from the apical foramen to the root apex or the cementoenamel junction, major/minor apical canal diameters, canal orifice shape, and prevalence of ramifications.
RESULTS
A single root was the most common anatomy in all countries (range, 97%-100%). Vertucci's type-I canal was the most frequent configuration (range, 36%-66%), followed by C-shaped and type-V canals. The oval-shaped canal orifice was the most predominant in all countries (range, 34%-58%), followed by the circular shape (range, 16%-47%). C-shaped canals occurred in all subpopulations (range, 14%-26%), always associated with radicular grooves. Ranges for canal ramifications were as follows: accessory canals, 36%-73%; lateral canals, 4%-12%; and apical delta, 4%-14% of the teeth. Many anatomic parameters differed significantly between countries (P < .05).
CONCLUSIONS
Vertucci's types-I and -V, and C-shaped canals were the most prevalent configurations in the subpopulations investigated. Accessory canals and several complex anatomies were found, with some significantly different frequencies between countries.
Topics: Humans; X-Ray Microtomography; Tooth Root; Bicuspid; Mandible; Dental Pulp Cavity; Brazil
PubMed: 37832245
DOI: 10.1016/j.archoralbio.2023.105809 -
Frontiers in Cardiovascular Medicine 2023The aim of the current study was to investigate the potential relationship between anatomical characteristics of pulmonary veins (PVs) and atrial fibrillation recurrence... (Review)
Review
Relationship between anatomical characteristics of pulmonary veins and atrial fibrillation recurrence after radiofrequency catheter ablation: a systematic review and meta-analysis.
BACKGROUND
The aim of the current study was to investigate the potential relationship between anatomical characteristics of pulmonary veins (PVs) and atrial fibrillation recurrence (AFR) following radiofrequency catheter ablation (RFCA), specifically focusing on PV diameter and cross-sectional orifices index (CSOA). The analysis was based on a comprehensive review of currently available literature, providing valuable insights for the prevention and treatment of AFR.
METHODS
Data was collected from five databases, including PubMed, MEDLINE, EMBASE, and Cochrane, spanning the period from 2004 to October 2022. The search strategy utilized Medical Subject Headings (MeSH) terms related to PV diameter, PV size, PV anatomy, and AFR. Indicators of PV diameter and CSOA from the included studies were collected and analyzed, with Weight mean difference (WMD) and 95% confidence intervals (CIs) representing continuous variables.
RESULTS
The meta-analysis included six studies. The results revealed that patients with AFR had a significant larger mean PV diameter compared to those without AFR (MD 0.33; 95% CI: 0.01, 0.66; = 0.04; = 33.80%). In a meta-analysis of two studies involving a total of 715 participants, we compared the diameters of the left superior pulmonary vein (LSPV), left inferior pulmonary vein (LIPV), right superior pulmonary vein (RSPV), right inferior pulmonary vein (RIPV) between patients with AFR and patients without AFR. The results showed that there were no statistically significant differences between the two groups in any of the four data items (all > 0.05). Additionally, the pooled estimate revealed that LSPV-CSOA, LIPV-COSA, RSPV-COSA, and RIPV-CSOA were greater in the AFR group compared to the non-AFR group, but the differences were not statistically significant (all > 0.05).
CONCLUSION
We found evidence supporting the notion that the PV diameter of patients who experienced AFR after RFCA was significantly larger than that of patients without AFR. The findings suggested that the PV diameter could serve as a potential predictor of the risk of AFR following RFCA.
PubMed: 37795484
DOI: 10.3389/fcvm.2023.1235433 -
International Journal of Surgery Case... Oct 2023The first clinical presentation of a hernia developing along the Spigelian line had been reported by Klinkosch. The Belgian anatomist Adriaan van der Spieghel (Adrianus...
INTRODUCTION & IMPORTANCE
The first clinical presentation of a hernia developing along the Spigelian line had been reported by Klinkosch. The Belgian anatomist Adriaan van der Spieghel (Adrianus Spigelius) was the first to describe the semilunar line now known as the linea Spigeli in 1645. Spigelian hernias are rare and account for 1 % to 2 % of all abdominal wall hernias. Most of these hernia occurs in the lower abdomen where posterior sheath is deficient. The hernia ring is well defined defect in the transverse aponeurosis.
CASE PRESENTATION
A 60 year old female, presented with a palpable lump at the right lower quadrant of the abdomen since 7 month before her presentation.
CLINICAL DISCUSSION
For the first time the swelling is small and painless then gradually increase in size and associated with dull aching pain. The swelling was reducible with a defect of size 4 × 4 cm palpable in right iliac fossa. There was a positive cough impulse. The swelling was non tender. Other hernial orifices were normal. No inguinal lymphadenopathy noted. Abdominal ultrasonography done revealed a defect in abdominal wall in right iliac fossa with reducible bowel content. Depending on basis of clinical and investigations, a diagnosis of Spigelian hernia was made. After preparation for surgery, exploration done. The defect measuring 4 cm in length was identified and anatomical repair was done with nylon- 0, by suturing medial border of internal oblique and transverse abdominus muscle to the lateral border of rectum abdominal wall followed by hernioplasty by mesh.
CONCLUSION
Spigelian hernias are rare multifactorial disorder leading to defect in the transversus abdominis muscle in anterior abdominal wall. Spigelian hernias carry a significant risk of incarceration and strangulation of sac content. The management of spigelian hernias is almost always surgical which can be done in a traditional open fashion or laparoscopically.
PubMed: 37757738
DOI: 10.1016/j.ijscr.2023.108785