Morbidity and long-term outcome of surgery for renal hyperparathyroidism: results from a prospective cohort.

PURPOSES: Surgery remains an important treatment option for renal hyperparathyroidism (rHPT). The number of long-term outcome studies of parathyroidectomy is limited. METHODS: All consecutive patients with a parathyroidectomy for rHPT between 09/2009 and 04/2021 in a Belgian tertiary referral hospital were prospectively enrolled. The main outcomes were (long-term) cured proportion and postoperative morbidity (hypocalcemia, recurrent laryngeal nerve (RLN) palsy, re-intervention for bleeding, and wound morbidity). RESULTS: Sixty patients with a median age of 57 years were analyzed, including 23 patients before kidney transplantation, 23 patients without kidney transplantation, and 14 patients after kidney transplantation. Median time to transplant was 15 (6-24) months after parathyroidectomy. Morbidity was low with only two non-urgent returns to theatre (wound infection and non-compressive hematoma), two temporary RLN paralyses, and no 30-day mortality. Length of hospital stay was longer in patients with parathyroidectomy before kidney transplant, due to a more severe and prolonged need for calcium supplementation. After a median follow-up of 63 months, 37 patients (62%) were still alive, and 11 patients (18%) developed a recurrence. CONCLUSIONS: This single-surgeon, single-center cohort with long-term follow-up confirms the safety and excellent 'cure' proportions of surgery for rHPT but stretches the importance of long-term follow-up.

Long COVID and return to work: a qualitative study.

BACKGROUND: The COVID-19 pandemic has given rise to an increasing number of patients with 'long COVID'. Long COVID is the persistence of symptoms for weeks or months after an infection by SARS-CoV-2. It often impacts on the professional life of affected people. AIMS: The aim of this study is to understand the experiences and needs of people with long COVID in relation to their return to work. METHODS: A qualitative study, combining individual interviews and online forum discussions, was performed early 2021, as part of a larger mixed method study on the needs of long COVID patients in Belgium. RESULTS: One hundred and thirty-four people participated in the study. Participants described various clinical symptoms precluding their return to work. They also face sceptical reactions from employers and colleagues and a lack of support from the social welfare system to facilitate their return to work. These barriers have various impacts, including psychological ones, likely to compromise the professional future of long COVID patients. CONCLUSIONS: While the analysis of patients' experiences shows variation in long COVID patients' experiences with return to work, it may help occupational physicians and healthcare practitioners to better take up their crucial role in the return to work of long COVID patients, including raising employers' and colleagues' awareness of the specific difficulties related to long COVID.

Pathophysiology and mechanism of long COVID: a comprehensive review.

BACKGROUND: After almost 2 years of fighting against SARS-CoV-2 pandemic, the number of patients enduring persistent symptoms long after acute infection is a matter of concern. This set of symptoms was referred to as "long COVID", and it was defined more recently as "Post COVID-19 condition" by the World health Organization (WHO). Although studies have revealed that long COVID can manifest whatever the severity of inaugural illness, the underlying pathophysiology is still enigmatic. AIM: To conduct a comprehensive review to address the putative pathophysiology underlying the persisting symptoms of long COVID. METHOD: We searched 11 bibliographic databases (Cochrane Library, JBI EBP Database, Medline, Embase, PsycInfo, CINHAL, Ovid Nursing Database, Journals@Ovid, SciLit, EuropePMC, and CoronaCentral). We selected studies that put forward hypotheses on the pathophysiology, as well as those that encompassed long COVID patients in their research investigation. RESULTS: A total of 98 articles were included in the systematic review, 54 of which exclusively addressed hypotheses on pathophysiology, while 44 involved COVID patients. Studies that included patients displayed heterogeneity with respect to the severity of initial illness, timing of analysis, or presence of a control group. Although long COVID likely results from long-term organ damage due to acute-phase infection, specific mechanisms following the initial illness could contribute to the later symptoms possibly affecting many organs. As such, autonomic nervous system damage could account for many symptoms without clear evidence of organ damage. Immune dysregulation, auto-immunity, endothelial dysfunction, occult viral persistence, as well as coagulation activation are the main underlying pathophysiological mechanisms so far. CONCLUSION: Evidence on why persistent symptoms occur is still limited, and available studies are heterogeneous. Apart from long-term organ damage, many hints suggest that specific mechanisms following acute illness could be involved in long COVID symptoms. KEY MESSAGESLong-COVID is a multisystem disease that develops regardless of the initial disease severity. Its clinical spectrum comprises a wide range of symptoms.The mechanisms underlying its pathophysiology are still unclear. Although organ damage from the acute infection phase likely accounts for symptoms, specific long-lasting inflammatory mechanisms have been proposed, as well.Existing studies involving Long-COVID patients are highly heterogeneous, as they include patients with various COVID-19 severity levels and different time frame analysis, as well.

To block, or not to block is it still the question? Effectiveness of alpha- and beta-blockade in phaeochromocytoma surgery: an institutional analysis.

INTRODUCTION: Phaeochromocytomas/paraganglioma (PPGL) surgery was historically associated with significant risks of perioperative complications. The decreased mortality (<3.0%) had been attributed in part to optimal preoperative alpha-blockade. The value of alpha-blockade in decreasing morbidity is being challenged. The aim of our study is to present an institutional experience of preoperative alpha-blocking of PPGL and its effect on cardiovascular stability and postoperative morbidity. METHODS: A retrospective study using data from our institutional database was conducted. All patients undergoing adrenalectomy for PPGL from October 2011 to September 2020 were included. All patients were routinely alpha-blocked. Intraoperative cardiovascular instability (ICI) was assessed through number of systolic blood pressure (SBP) episodes >160mmHg, SBP <90mmHg, the need for vasoactive drugs and volume of intraoperative crystalloids administered. Morbidity was also evaluated. RESULTS: A total of 100 consecutive patients undergoing surgery were identified of whom 53 patients had complete anaesthetic records available for analysis. Thirty-two patients (60%) had at least one episode with an SBP >160mmHg. Nine (17%) cases had no intraoperative hypotensive episodes, while 3 (6%) patients had >10 intraoperative episodes of an SBP <90mmHg. Twenty-one (40%) patients received vasoactive drugs during surgery. The median volume of intraoperative crystalloids was 2 litres (1-4). Postoperatively, no patient experienced cardiovascular complications, including arrhythmia or myocardial ischaemia. Only two were admitted to an intensive care unit (ICU) and one 30-day readmission occurred. CONCLUSIONS: Cardiac instability remained significant in PPGL surgery despite optimal alpha- and beta-blockade. While omitting blockade would appear empirically questionable, a randomised controlled trial (RCT) of surgery with and without alpha-blockade will provide an answer.

To block, or not to block is it still the question? Effectiveness of alpha- and beta-blockade in phaeochromocytoma surgery: an institutional analysis.

INTRODUCTION: Phaeochromocytomas/paraganglioma (PPGL) surgery was historically associated with significant risks of perioperative complications. The decreased mortality (<3.0%) had been attributed in part to optimal preoperative alpha-blockade. The value of alpha-blockade in decreasing morbidity is being challenged. The aim of our study is to present an institutional experience of preoperative alpha-blocking of PPGL and its effect on cardiovascular stability and postoperative morbidity. METHODS: A retrospective study using data from our institutional database was conducted. All patients undergoing adrenalectomy for PPGL from October 2011 to September 2020 were included. All patients were routinely alpha-blocked. Intraoperative cardiovascular instability (ICI) was assessed through number of systolic blood pressure (SBP) episodes >160mmHg, SBP <90mmHg, the need for vasoactive drugs and volume of intraoperative crystalloids administered. Morbidity was also evaluated. RESULTS: A total of 100 consecutive patients undergoing surgery were identified of whom 53 patients had complete anaesthetic records available for analysis. Thirty-two patients (60%) had at least one episode with an SBP >160mmHg. Nine (17%) cases had no intraoperative hypotensive episodes, while 3 (6%) patients had >10 intraoperative episodes of an SBP <90mmHg. Twenty-one (40%) patients received vasoactive drugs during surgery. The median volume of intraoperative crystalloids was 2 litres (1-4). Postoperatively, no patient experienced cardiovascular complications, including arrhythmia or myocardial ischaemia. Only two were admitted to an intensive care unit (ICU) and one 30-day readmission occurred. CONCLUSIONS: Cardiac instability remained significant in PPGL surgery despite optimal alpha- and beta-blockade. While omitting blockade would appear empirically questionable, a randomised controlled trial (RCT) of surgery with and without alpha-blockade will provide an answer.

The PanSurg-PREDICT Study: Endocrine Surgery During the COVID-19 Pandemic.

BACKGROUND: In the midst of the COVID-19 pandemic, patients have continued to present with endocrine (surgical) pathology in an environment depleted of resources. This study investigated how the pandemic affected endocrine surgery practice. METHODS: PanSurg-PREDICT is an international, multicentre, prospective, observational cohort study of emergency and elective surgical patients in secondary/tertiary care during the pandemic. PREDICT-Endocrine collected endocrine-specific data alongside demographics, COVID-19 and outcome data from 11-3-2020 to 13-9-2020. RESULTS: A total of 380 endocrine surgery patients (19 centres, 12 countries) were analysed (224 thyroidectomies, 116 parathyroidectomies, 40 adrenalectomies). Ninety-seven percent were elective, and 63% needed surgery within 4 weeks. Eight percent were initially deferred but had surgery during the pandemic; less than 1% percent was deferred for more than 6 months. Decision-making was affected by capacity, COVID-19 status or the pandemic in 17%, 5% and 7% of cases. Indication was cancer/worrying lesion in 61% of thyroidectomies and 73% of adrenalectomies and calcium 2.80 mmol/l or greater in 50% of parathyroidectomies. COVID-19 status was unknown at presentation in 92% and remained unknown before surgery in 30%. Two-thirds were asked to self-isolate before surgery. There was one COVID-19-related ICU admission and no mortalities. Consultant-delivered care occurred in a majority (anaesthetist 96%, primary surgeon 76%). Post-operative vocal cord check was reported in only 14% of neck endocrine operations. Both of these observations are likely to reflect modification of practice due to the pandemic. CONCLUSION: The COVID-19 pandemic has affected endocrine surgical decision-making, case mix and personnel delivering care. Significant variation was seen in COVID-19 risk mitigation measures. COVID-19-related complications were uncommon. This analysis demonstrates the safety of endocrine surgery during this pandemic.

Combined cervicosternotomy and cervicotomy for true retrosternal goiters: a surgical cohort study.

OBJECTIVE: Intrathoracic goiters are a heterogeneous group characterized by limited or extensive substernal extension. Whereas the former can be treated through cervicotomy, the latter sometimes requires a cervicosternotomy. Whether cervicosternotomy leads to more morbidity remains unclear. This study aimed to compare intra- and postoperative morbidity in patients treated by cervicotomy or cervicosternotomy for intrathoracic goiters and standard thyroidectomy. METHODS: In a prospectively gathered cohort undergoing thyroid surgery (2010-2019) intra- and postoperative morbidity of cervicotomy (N = 80) and cervicosternotomy (N = 15) for intrathoracic goiters was compared to each other and to a 'standard' thyroidectomy (N = 1500). RESULTS: An intrathoracic extension prior to surgery was found in 95 (6%) of all thyroidectomies. Eighty patients (84%) were operated by cervicotomy and 15 (16%) by cervicosternotomy. The risk of temporary recurrent laryngeal nerve palsy was much higher in the cervicosternotomy group (21%) compared to cervicotomy (4%) and standard thyroidectomy (3%). The risk of temporary hypocalcemia after cervicotomy (28%) was comparable to a standard thyroidectomy (32%) but higher after cervicosternotomy (20%). No cases of permanent hypocalcemia or laryngeal nerve palsy were observed in both groups with substernal extension. The need for surgical reintervention was significantly higher in the cervicotomy group (6%) compared to cervicosternotomy (0%) and standard thyroidectomy (3%). CONCLUSION: In patients undergoing thyroid surgery for an intrathoracic goiter, cervicosternotomy was associated with more temporary laryngeal nerve palsy, but none of the interventions resulted in higher risks of permanent nerve damage, permanent hypocalcemia, or reintervention for bleeding. Reintervention was even more common after cervicotomy compared to cervicosternotomy. LEVEL OF EVIDENCE: IV.

Intra-operative vagal neuromonitoring predicts non-recurrent laryngeal nerves: technical notes and review of the recent literature.

BACKGROUND: During thyroid surgery, extreme caution must be taken not to harm the recurrent laryngeal nerve to avoid vocal cord palsy. A non-recurrent laryngeal nerve (NRLN) is a rare anatomical variation that is extremely vulnerable during thyroid surgery. METHODS: Description of two NRLN during thyroid surgery discovered early by using continuous intra-operative vagal nerve neuromonitoring and review of the literature. RESULTS: During thyroid surgery, we use continuous intra-operative vagal nerve neuromonitoring starting with checking vagal nerve signals. It is essential to start stimulation in the most proximal portion of the carotid sheath. An absent pre-dissection signal on the right vagal nerve with a positive signal on the left vagal nerve indicates a non-recurrent course of the right laryngeal nerve. Post-operatively computed tomography scan (CT-scan) was performed and showed an associated extra-anatomical course of the subclavian artery also known as an arteria lusoria. CONCLUSION: The NRLN is an important surgical challenge because unilateral palsy can lead to permanent hoarseness. This anomaly emphasizes the importance of a thorough surgical dissection and the use of intra-operative vagal nerve neuromonitoring. Our method of continuous intra-operative vagal nerve monitoring makes it possible to predict a non-recurrent laryngeal nerve in an early stage during surgery.

Robotic-assisted parathyroidectomy through lateral cervical approach: first results in Belgium.

OBJECTIVE: A parathyroidectomy has been the treatment of choice for primary hyperparathyroidism. Especially the improved imaging techniques have led to minimally invasive techniques. Aim of this study was to evaluate our experience with robot-assisted parathyroidectomy through lateral cervical approach. STUDY DESIGN: Prospective clinical cohort. METHODS: All consecutive patients who underwent a robotic-assisted parathyroidectomy for primary hyperparathyroidism since 2011 were enrolled in this study. Demographic data, biometrics, imaging data and surgery data were collected. Main outcomes were postoperative hypocalcemia, recurrent laryngeal nerve paralysis and other postoperative complications. RESULTS: Twenty-two patients were enrolled. When patients with conversion were excluded (39%) mean operating time was 69 min. In all patients a normal value of serum PTH-levels was achieved 4 h postoperatively. Mean value of serum calcium was 2.92mmol/L preoperative and 2.33mmol/L postoperative. There was no persistent hypocalcemia in any of our patients. 87% was discharged on the first postoperative day. Esthetic results were excellent. CONCLUSIONS: Robotic-assisted parathyroidectomy through lateral cervical approach is a safe and feasible procedure in patients with posteriorly localized parathyroid adenomas. Preoperative imaging techniques are crucial to detect the exact location.

New placement of recording electrodes on the thyroid cartilage in intra-operative neuromonitoring during thyroid surgery.

OBJECTIVE: During thyroid surgery, extreme caution is needed not to harm the recurrent laryngeal nerve and to avoid vocal cord palsy. Intra-operative neuromonitoring became increasingly popular as an adjunct to the gold standard of visual identification of the recurrent laryngeal nerve (RLN). Electromyographic (EMG) responses are normally recorded by electrodes attached to the endotracheal tube. Alteration in position can lead to false loss of signal. We developed thyroid cartilage electrodes that can be fixed directly onto the thyroid cartilage. STUDY DESIGN: Prospective clinical cohort METHODS: Thyroid surgery with intra-operative neuromonitoring using both endotracheal tube-based electrodes and thyroid cartilage electrodes was performed in 25 patients undergoing thyroid surgery. EMG data were collected and reported as median and interquartile ranges (IQR), and the results were compared with the x Wilcoxon signed-rank test for paired measurements. RESULTS: After stimulating vagal nerve (VN), recurrent laryngeal nerve (RLN) and external branch of the superior laryngeal nerve (EBSLN), significantly higher EMG amplitudes were measured before and after thyroid resection for the thyroid cartilage (TC) electrodes, in all comparisons except for the right VN. At the level of the left EBSLN, median amplitude of 560 mV (IQR 190-1050) before and 785 mV (IQR 405-3670) after resection was noted. At the level of the right EBSLN, median amplitude of 425 µV (IQR 257-698) before and 668 mV (IQR 310-1425) after resection was noted. Median amplitudes of 760 mV (IQR 440-1180) and 830 mV (IQR 480-1490) were noted at the left RLN, median amplitudes of 695 mV (IQR 405-1592) and 1078 mV (IQR 434-1895) were noted at the right RLN. CONCLUSION: Thyroid cartilage electrodes appear to be a feasible and reliable alternative for endotracheal electrodes.

Potent and efficacious inhibition of CXCR2 signaling by biparatopic nanobodies combining two distinct modes of action.

Chemokines and chemokine receptors are key modulators in inflammatory diseases and malignancies. Here, we describe the identification and pharmacologic characterization of nanobodies selectively blocking CXCR2, the most promiscuous of all chemokine receptors. Two classes of selective monovalent nanobodies were identified, and detailed epitope mapping showed that these bind to distinct, nonoverlapping epitopes on the CXCR2 receptor. The N-terminal-binding or class 1 monovalent nanobodies possessed potencies in the single-digit nanomolar range but lacked complete efficacy at high agonist concentrations. In contrast, the extracellular loop-binding or class 2 monovalent nanobodies were of lower potency but were more efficacious and competitively inhibited the CXCR2-mediated functional response in both recombinant and neutrophil in vitro assays. In addition to blocking CXCR2 signaling mediated by CXCL1 (growth-related oncogene α) and CXCL8 (interleukin-8), both classes of nanobodies displayed inverse agonist behavior. Bivalent and biparatopic nanobodies were generated, respectively combining nanobodies from the same or different classes via glycine/serine linkers. Interestingly, receptor mutation and competition studies demonstrated that the biparatopic nanobodies were able to avidly bind epitopes within one or across two CXCR2 receptor molecules. Most importantly, the biparatopic nanobodies were superior over their monovalent and bivalent counterparts in terms of potency and efficacy.

The Chilaiditi Syndrome : Another Greek Tragedy ? Case report and short review of literature.

The Chilaiditi syndrome is a rare disorder, characterized by a broad spectrum of (gastro-intestinal) symptoms due to an interposition of a segment of bowel between the liver and the diaphragm. This anatomical variation is diagnosed through abdominal x-ray and is known as the Chilaiditi sign. Since the syndrome can lead to severe complications, such as perforation, intestinal obstruction or bowel ischemia, awareness of this syndrome is essential for every general surgeon. Knowledge of predisposing factors is necessary to treat possible complications accordingly. Conservative -management often is sufficient. Surgical intervention is reserved for those who do not respond to conservative line of management or those with severe complications.

Establishing the relationship between nurse staffing and hospital mortality using a clustered discrete-time logistic model.

Studies based on aggregated hospital outcome data have established that there is a relationship between nurse staffing and adverse events. However, this result could not be confirmed in Belgium where 96 per cent of the variability of nurse staffing levels over nursing units (belonging to different hospitals) is explained by within-hospital variability. To better appreciate the possible impact of nurse staffing levels on adverse events, we propose a multilevel approach reflecting the complex nature of the data. In particular we suggest a clustered discrete-time logistic model that captures the risks associated with a given unit in the patient's trajectory through the hospital. The model also allows for nurse staffing levels to affect the current and subsequent nursing unit (carry-over effect). In the model 'time' is represented by the sequential number of the nursing unit that the patient is passing through. The model incorporates hospital and nursing unit random effects to express that patients treated in the same hospital and taken care of by nurses of the same unit share a common environment. In this study we used Belgian national administrative databases for the year 2003 to assess the relationship between nurse staffing levels and nurse education variables with in-hospital mortality. The analysis was restricted to elective cardiac surgery patients. Lower nursing unit staffing levels in the general nursing units were associated with high in-hospital mortality in units past the traditional cardiac surgery nursing units.

Updating the Belgian Nursing Minimum Data Set: framework and methodology.

The Belgium Nursing Minimum Data Set (BNMDS) started nationally in 1988. It has to be updated to reflect the current evolution of health care. This document describes the framework and methodology for this updating project. The main preoccupation of the research project is to update the existing instrument while avoiding an overload of additional items. A wide range and in-depth analysis of the existing data sets (BNMDS and related data sets) is prerequisite with a view to the development of relevant and effective nursing care indicators. New items and their registration are only acceptable when existing data are insufficient for the required indicators. Indicators relate to clinical nursing care as well as the management of nursing care, e.g. nursing care, nurse staffing, variability of nursing care in view of hospitalization types. While the current indicators make the nursing care process visible only, the updated BNMDS and its indicators should pilot the appropriateness of hospital admissions and their modus, e.g. in-patient versus one-day, and length of stay, the quality of nursing care and the adequacy of nurse staffing. The project focuses on six care programs or clinical pathways: care of the elderly, intensive care, chronic care, pediatrics, cardiology and oncology. A first work package includes the development of new indicators and updating of existing ones, based on secondary data analysis of the existing BNMDS and related data sets. The second work package involves the establishment of workgroups for each care program. The workgroups will review, evaluate and fine-tune the proposals of the researchers. Finally, in work package three, the updated BNMDS will be tested in the hospital setting.