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Tetralogy of Fallot is the most common cyanotic CHD and is ideally repaired during infancy. However, delayed diagnosis and limited access to congenital cardiac care may result in presentation during adolescence or adulthood. This study evaluated outcomes of tetralogy of Fallot repair in patients aged ≥ 13 years.
Patients and Methods:
This retrospective cohort study included patients aged ≥ 13 years undergoing primary tetralogy of Fallot repair between June 2016 and June 2025. Demographic, operative, and post-operative data, including early mortality and reintervention, were analysed.
Results:
Ninety-four patients underwent repair at a median age of 15 years (interquartile range: 3) and weight of 36.5 kg (interquartile range: 12.2). Pre-operative coil embolisation of aortopulmonary collaterals was required in 26.6%. Mean cardiopulmonary bypass and aortic cross-clamp times were 114.8 ± 49.8 and 82.4 ± 35.6 minutes, respectively. Mean ventilation duration was 7.7 ± 7.1 hours, ICU stay 3.9 ± 1.0 days, and post-operative hospital stay 4.6 ± 1.3 days. Transannular patch repair was performed in 65 patients (69%), while 29 (31%) underwent pulmonary valve-preserving repair, with comparable early outcomes. Thirty-day mortality was 1.06%, and reintervention occurred in 2.1% during a mean follow-up of 38.4 months.
Conclusions:
Primary repair of tetralogy of Fallot in late-presenting adolescents and adults can be performed with low early mortality and acceptable morbidity. Careful pre-operative assessment, including identification and management of significant aortopulmonary collaterals, and individualised right ventricular outflow tract reconstruction are important components of management. These findings support definitive repair in appropriately selected late-presenting patients.
Lung cancer patients have a higher risk of suicide, but the long-term patterns and how they differ by treatment type have not been fully characterized. To investigate longitudinal suicide risk among lung cancer patients who underwent surgery compared to matched controls and to examine variations over time by treatment modality and patient characteristics.
Methods
We identified 37,215 individuals newly diagnosed with lung cancer between 2010 and 2017 who underwent lung resection within 1 year of diagnosis, along with 1:3 age- and sex-matched controls. Subdistribution hazard ratios (sHRs) and 95% confidence intervals (CIs) for suicide were estimated using a competing risk analysis.
Results
The cohort (mean age 64.0 years; 62.5% male) was followed for a mean of 7.6 years. There were 154 suicides among lung cancer patients (incidence rate 0.6 per 1,000 person-years). Suicide risk peaked during the first year after surgery (sHR 1.88, 95% CI 1.23–2.87) and declined in subsequent years. Patients who underwent surgery alone had a higher risk in the first year (sHR 1.66, 95% CI 1.02–2.69), which gradually decreased over time. In contrast, patients treated with adjuvant chemotherapy or radiotherapy experienced a substantially higher initial risk (e.g., sHR 7.00, 95% CI 3.00–16.37 for surgery + radiotherapy) and maintained a moderate increase in suicide risk even beyond 5 years. Subgroup analyses showed an especially elevated first-year suicide risk among younger adults aged 20–49 years, males, and never smokers.
Conclusions
Suicide risk for lung cancer patients is highest during the first postoperative year, particularly for those who receive multimodal therapy, or are younger adults, males, or never smokers. These findings emphasize the need to prioritize early, tailored psychosocial support in survivorship care to help mitigate long-term suicide risk.
Drawing on extensive research in dozens of town and state archives, this Element offers the first comprehensive study of the (mostly itinerant) surgeons or 'operators' who specialized in couching cataracts, extracting bladder stones, and fixing hernias and 'harelips' in the Holy Roman Empire in the period between 1500 and 1750. It highlights their unique place in the medical market, outlines the considerable differences in their training, expertise, and reputation, and describes the various operations they performed. It studies their interactions and financial arrangements with the patients and their families, analyses conflicts arising from bad outcomes and insufficient warnings about the risks involved and looks at the ways in which local and territorial authorities sought to keep inexperienced and incompetent operators from practicing, while securing access to the skilled ones, whom they sometimes even employed against a salary.
To evaluate medications, surgical procedures, demographics and co-morbidities in Ménière’s disease using TriNetX.
Method
Retrospective cohort analysis.
Results
Among 117,059 Ménière’s disease patients, common medications were corticosteroids benzodiazepines, diuretics and antacids. Surgical procedures were rare: cochlear implantation (1 percent), endolymphatic sac surgery (1 percent), labyrinthectomy (0.3 percent) and vestibular nerve section (0.1 percent). Surgical patients were older (mean 68.4 vs 66 years, p < 0.001), more often male (44.3 percent vs 34.6 percent) and less likely to be Asian (1.6 percent vs 8.3 percent) or African American (2.0 percent vs 4.4 per cent). Co-morbidities included musculoskeletal diseases, metabolic disorders, hypertension, anxiety and/or depression, gastro-oesophageal reflux disease, thyroid disordersand migraine. Melanoma prevalence (6 percent) was 12–15 times higher than in the US population.
Conclusion
Ménière’s disease treatment is dominated by corticosteroids, benzodiazepines and diuretics, with rare surgical procedures. Surgical patients are older, more often male and less likely to be Asian or African American. Co-morbidities include musculoskeletal diseases, hypertension, gastroesophageal reflux disease, thyroid disorders, migraine and higher melanoma prevalence, warranting further research.
Adults with repaired tetralogy of Fallot represent a growing clinical population at risk for long-term cardiovascular complications. Characterising their postoperative course and late outcomes is essential to guide surveillance and management.
Objectives:
To describe the clinical characteristics and long-term outcomes of adult patients (≥18 years) with repaired tetralogy of Fallot who received care at a quaternary-care institution between January 2000 and December 2024.
Methods:
We performed a retrospective cohort study. Adult patients with a diagnosis of repaired tetralogy of Fallot who had undergone complete surgical repair either during the study period or before it were included. Clinical and sociodemographic data were obtained.Variables related to prior palliative procedures, type of surgical repair, reinterventions (surgical or catheter-based), and long-term outcomes were analysed.
Results:
A total of 56 patients were included; 31 (55.4%) were women. The median duration of follow-up after repair was 23 years; twenty patients (35.7%) had undergone a palliative or prior intervention before complete repair. The most common type of outflow tract reconstruction was a transannular patch (37.5%), followed by homograft implantation (25.0%). Reinterventions occurred in 29 patients (51.8%), most commonly pulmonary valve replacement (23 patients, 41.0%), mainly due to progressive pulmonary regurgitation and right ventricular dilation. Arrhythmic complications included premature ventricular contractions in 35.7% of patients. Long-term mortality was 3.6%.
Conclusions:
Adults with repaired tetralogy of Fallot demonstrate high long-term survival; however, late complications are common and frequently require surgical or catheter-based reintervention. These findings underscore the need for lifelong specialised follow-up in adult CHD programmes.
Echocardiography and computed tomographic angiography in a three-month-old boy confirmed a right coronary artery fistula and a right coronary artery aneurysm. The patient was successfully operated via right axillary thoracotomy approach.
Myasthenia gravis (MG) is an autoimmune neuromuscular disorder characterized by fatigable weakness and increased perioperative vulnerability. Postoperative myasthenic crisis, defined as respiratory failure requiring prolonged ventilation or re-intubation, remains a feared complication after surgical procedures such as thymectomy. The efficacy of preoperative interventions such as intravenous immunoglobulin (IVIg) and plasmapheresis remains uncertain. This review examines the evidence supporting risk stratification tools and immunomodulatory strategies to prevent postoperative myasthenic crisis. A comprehensive literature review was conducted focusing on studies evaluating the incidence, risk factors and preventive strategies for postoperative myasthenic crisis in MG patients. Particular emphasis was placed on clinical predictive models and randomized trials assessing preoperative IVIg and plasmapheresis. Recent data suggest the incidence of postoperative myasthenic crisis has declined to below 10%, largely due to advances in surgical technique and perioperative care. Established risk factors include bulbar involvement, reduced pulmonary function and prior crises. Risk prediction models such as the Leuzzi and Kanai scores offer clinically useful stratification. While older retrospective studies favored preoperative plasmapheresis, meta-analyses and randomized trials have yielded mixed results. Randomized trials of IVIg have shown no significant benefit in well-controlled patients, and both interventions carry notable risks and costs. Current evidence does not support the routine use of IVIg or plasmapheresis prior to surgery in all MG patients. A targeted, risk-based approach guided by validated predictive models is recommended to minimize unnecessary interventions and health care system costs.
We introduce the notion of adjacency in three-manifolds. A three-manifold Y is n-adjacent to another three-manifold Z if there exists an n-component link in Y and surgery slopes for that link such that performing Dehn surgery along any nonempty sublink yields Z. We characterize adjacencies from three-manifolds to the three-sphere, providing an analogy to Askitas and Kalfagianni’s results on n-adjacency in knots.
Spinal CSF leaks are a known cause of spontaneous intracranial hypotension, often presenting with orthostatic headaches and other neurological symptoms. While epidural blood patches are commonly used as initial treatment, many patients require surgery due to persistent symptoms. This study integrates a retrospective institutional cohort and a systematic literature review to evaluate the safety and efficacy of surgical dural repair for spontaneous spinal CSF leaks.
Methods:
A retrospective chart review included all patients who underwent surgery for spontaneous spinal CSF leak at a Canadian center between June 2017 and December 2023. Clinical presentation, imaging findings, surgical approach and postoperative outcomes were assessed. A PRISMA-compliant systematic review identified studies reporting surgical management and outcomes for spinal CSF leaks.
Results:
Forty patients (21 females, 19 males; mean age 50.48 ± 11.88 years) were included. Type 1 ventral dural CSF leaks predominated (72.5%), most commonly in the thoracic spine. Spinal longitudinal extradural collection and cranial stigmata were present in 70% and 75%, respectively. Microscopic direct dural repair led to clinical improvement in 82.5%, with headache resolution or improvement in 85.72%. The complication rate was 7.5% with all complications being transient. The systematic review included 20 studies (483 patients), reporting an 84.06% pooled surgical success rate, with transient complications most common in direct suturing techniques.
Conclusion:
Surgical repair is a safe and effective treatment for spontaneous spinal CSF leaks, particularly in patients with failed conservative treatment. Favorable outcomes support early, anatomically guided surgical intervention.
Cerebrospinal fluid diversion via ventriculoperitoneal (VP) shunting is the mainstay treatment for hydrocephalus. Traditionally, neurosurgeons place the abdominal catheter through abdominal incision, which has become an efficient and standardized technique. This approach carries a 10–30% complication rate, including infection, catheter obstruction, misplacement, hemorrhage and post-operative pain. Laparoscopic assistance (LA) is an emerging alternative to mini-laparotomy, with potential benefits including reduced distal catheter malplacement and shorter operative times. Most investigations on LA are limited to single centers, with no data from Canada. This study aims to identify practice patterns in VP shunting within a Canadian context.
Methods:
Practicing Canadian neurosurgeons were surveyed using a modified Delphi methodology. The survey was distributed to practicing neurosurgeons via the Canadian Neurosurgical Society and the Canadian Neurosurgery Research Collaborative.
Results:
Across two rounds, 36 neurosurgeons participated, representing all provinces with academic neurosurgical centers. Consensus was reached on five out of eight topics. Findings revealed that 65.5% of respondents had experience with LA, and 93% believed it reduced distal catheter malposition. Infection (77.8%), distal catheter obstruction (82.9%) and proximal obstruction (69.4%) were identified as the most common complications, each occurring in up to 10% of cases. In total, 71% anticipated eventual reduced operative times with increased LA experience.
Conclusion:
Canadian neurosurgeons did not identify major barriers to LA beyond personal preference. LA is expected to improve distal catheter placement, though its broader benefits remain uncertain. Patient comorbidities were considered a greater risk factor for complications than surgical technique alone.
Contemporary management of aortic coarctation in adults is primarily by percutaneous intervention; however, this is not always possible. Intrapericardial ascending-to-descending aortic grafting is an alternative approach in adults with complex aortic coarctation. It can be performed off-pump and allows for a simultaneous treatment of concomitant cardiac lesions. Our aim was to examine the indications and the clinical long-term outcomes of intrapericardial ascending-to-descending aortic grafting in adults with aortic coarctation.
Methods:
We retrospectively reviewed demographic, clinical, surgical, and follow-up data of patients who underwent intrapericardial ascending-to-descending aortic grafting at a single tertiary centre between September 1994 and November 2016.
Results:
Ten patients were identified. Indications were primary intervention (n = 4), re-coarctation (n = 5), and iatrogenic coarctation of aorta after stent grafting (n = 1). There were no peri-operative deaths. During a mean follow-up of 13.6 ± 9.4 years, one patient died 11 years after surgery, unrelated to intrapericardial ascending-to-descending aortic grafting. All grafts remained patent with no anastomotic pseudoaneurysms at latest follow-up.
The mean systolic blood pressure decreased from 154 ± 24 mmHg at baseline to 134 ± 20 mmHg at latest follow-up (p = 0.05), with the mean number of prescribed antihypertensive medications decreasing from 2.8 ± 1.5 preoperatively to 1.6 ± 0.5 (p = 0.11).
Conclusion:
Intrapericardial ascending-to-descending aortic grafting is a safe and effective approach for adults with complex coarctation of aorta or re-coarctation not suitable for a percutaneous or conventional surgical approach. Improved blood pressure control and reduced anti-hypertensive use were observed long-term.
The chapter explores the evolution and future of invasive monitoring in epilepsy surgery, emphasizing the impact of technological advancements and conceptual shifts. The goal of epilepsy neurosurgery is to enhance brain function by precisely targeting and removing malfunctioning brain areas. Due to the brain’s complexity, detailed and accurate information about each patient’s condition is vital. Invasive monitoring, a diagnostic procedure involving the placement of recording electrodes in the brain, provides critical data for crafting tailored surgical strategies. Historically, the use of invasive monitoring evolved with the development of electrocorticography (ECoG) and stereotactic electroencephalography (sEEG). Early implementations relied on ictal symptoms and non-invasive techniques such as EEG, but advancements in electrode placement, notably by Jean Talairach and subsequent pioneers, enabled precise localization of seizure onset zones (SOZ). The regional divide saw North America favoring subdural grids, while Europe preferred sEEG, leading to a revolution in epilepsy surgery practice. Currently, sEEG dominates due to its ability to record deep brain structures and offer comprehensive network analysis. This shift is bolstered by innovations such as robot-assisted stereotaxy and MRI-guided laser therapy. The chapter concludes by highlighting the potential future directions, including enhanced computational analysis, Bayesian approaches, and artificial intelligence, which promise to refine surgical planning and improve patient outcomes.
This chapter provides an overview of minimally invasive approaches in neurosurgery. It explores the history of minimally invasive techniques and their current state and discusses the authors’ beliefs regarding future advancements. We highlight the transformative impact of minimally invasive approaches, including improved patient outcomes, quality of life, and reduced morbidity.
Congenitally corrected transposition of the great arteries is a rare congenital cardiac condition with varied presentations, complicating treatment decisions. This study evaluates the impact of medical management, physiologic repair, and anatomic repair on health-related quality of life.
Methods:
A cross-sectional follow-up was conducted on 50 congenitally corrected transposition of the great arteries patients from a cohort of 240 at Cleveland Clinic (1995-2020). Health-related quality of life was assessed using MacNew and PROMIS-10 questionnaires. Echocardiographic data on systemic atrioventricular valvular regurgitation and systemic ventricular dysfunction were analysed. A time-varying coefficient model evaluated these factors’ impact on health-related quality of life.
Results:
Anatomic repair had significantly higher PROMIS-10 Physical T-scores compared to physiologic repair (median 50.9 vs 41.6, p = 0.04). MacNew Social scores were significantly higher for medical management compared to physiologic repair (median 6.8 vs 6.0, p = 0.02). Echocardiographic analysis revealed that systemic ventricular dysfunction had a stronger immediate impact on health-related quality of life. Systemic atrioventricular valve regurgitation showed a delayed negative effect, significant at 6-10 years after echo, although this effect gradually decreased over time. Anatomic repair patients had better systemic ventricular function (84.6% normal), and less systemic atrioventricular valve regurgitation (69.2% had none) compared to medical management and physiologic repair groups.
Conclusions:
Anatomic repair improves health-related quality of life in congenitally corrected transposition of the great arteries patients, with physiologic repair showing some gains over time. Health-related quality of life data should provide important guidance regarding treatment decisions, especially in well-balanced congenitally corrected transposition of the great arteries patients.
Using bi-contact geometry, we define a new type of Dehn surgery on an Anosov flow with orientable weak invariant foliations. The Anosovity of the new flow is strictly connected to contact geometry and the Reeb dynamics of the defining bi-contact structure. This approach gives new insights into the properties of the flows produced by Goodman surgery and clarifies under which conditions Goodman’s construction yields an Anosov flow. Our main application gives a necessary and sufficient condition to generate a contact Anosov flow by Foulon–Hasselblatt Legendrian surgery on a geodesic flow. In particular, we show that this is possible if and only if the surgery is performed along a simple closed geodesic. As a corollary, we have that any positive skewed $\mathbb {R}$-covered Anosov flow obtained by a single surgery on a closed orbit of a geodesic flow is orbit equivalent to a positive contact Anosov flow.
Few studies have investigated stapedotomy using 1470 nm diode laser, and the present article contributes with clinical experience.
Methods
A retrospective analysis was conducted to investigate hearing performance of 22 patients undergoing 1470 nm diode laser-assisted primary stapedotomy.
Results
In 8/22 cases, accidental breaches to the inner ear by the laser and in 14/22 cases the stapedotomy was performed as planned only by drill. Air–bone gap and loss of sensorineural hearing were low and with no significant differences for groups at follow-up. No patients with breaches by laser reported new or worse tinnitus.
Conclusion
Accidental breaches in the stapes footplate using this diode laser did not appear to equate with inner ear damage within this limited cohort. Hearing outcomes were not significantly affected. These findings should be interpreted with caution. Further studies evaluating this laser wavelength in stapedotomy is required.
The virtues of the scapular tip free flap for reconstruction of complex midface oncologic defects have been claimed by many. To obtain optimal functional and aesthetic results, precise positioning of the free flap used for reconstruction is paramount.
Methods
Four cases illustrate our approach to midface reconstruction with angular branch-based scapular tip flaps. A standard surgical navigation device was used both to plan bone cuts for the oncologic resection and to optimise the positioning of the flap.
Results
Case 1 illustrates the usefulness of navigation for reconstruction of total palato-septectomy defects, using a horizontally positioned flap. Optimal neo-palate height, alignment of the anterior nasal spine and nasal projection were obtained. For cases 2–4, vertical inset of the flap yielded optimal midface projection and orbital floor position.
Conclusion
Surgical navigation systems are useful adjuncts for midface reconstruction.
In this chapter of Complex Ethics Consultations: Cases that Haunt Us, the author encounters a 50-year-old woman who is requesting her arm be amputated to alleviate her complex regional pain syndrome. This is not a usual indication for an amputation, but a surgeon is willing to offer the procedure. The author attempts to bring about clarity even in the face of uncertainty. Moral distress played a substantial role in the consultation.
In this chapter of Complex Ethics Consultations: Cases that Haunt Us, the authors discuss a circumstance of a request by a family to withdraw life-sustaining surgery only three days after open-heart surgery. The surgeon both wanted to respect family and to advocate for life for the patient. Although chances of recovery were slim, the surgeon struggled with the timing. The family had experienced a rocky postoperative course and were convinced that continuing was not what patient would want.
In this chapter of Complex Ethics Consultations: Cases that Haunt Us, the authors describe a patient in her twenties who had a left ventricular assist device implanted in an acute circumstance to save her life before completing a heart transplant evaluation. After being delayed for being placed on the transplant list because of nonadherence to appointment, the patient asked for the device to be shut off, which would result in her death. The authors reflect on better ways to support patients in these circumstances.