The study investigates the case of a total thyroidectomy, where after dissection multiple nodules showed two malignant patterns by immunohistochemistry. Molecular analysis based on DNA methylation profile was used to further inspect the origin of the coexisting neoplasms. We confirmed the presence of malignant skin melanoma involving medullary thyroid cancer.

Aim: Wildlife and their interaction human or human-wildlife conflict, though reported throughout human prehistory, its severity and complexity have increased in recent years. The Hindu Kush Himalaya region, rich and biodiversity and known as roof of the world have gained recognition for many conservation success but also with increasing trends of human-wildlife conflict. But, they are sparsely documented and the severity of its impacts are not known for the region. Hence, we present a systematic review on human-wildlife conflict from the roof of the world. Methods: We followed the systematic literature review (SLR) approach of qualitative content analysis, using Search, Appraisal, Synthesis, and Analysis (SALSA) framework and also used VOSViewer for spatial and network analysis.. Results: Our results based on 240 peer-reviewed articles till 2019 showed 57% increase of publications in the last decades but with disproportionate geographical and thematic focus. About 82% of the research reported cases are from protected area with large carnivores and mega-herbivores as major causes of the conflict. About 53% of the studies were questionnaire-based household and the results highlight habitat disturbance through land cover change, urbanization, and human population increase as major drivers of human-wildlife conflict. Traditional management techniques like guarding and fencing along with improvement in plans and policies have been reported. Our analysis of 681 keywords revealed prominent focus on ‘human-wildlife conflict’, ‘Nepal’, ‘Bhutan’, ‘Snow Leopard’ and ‘Leopard’ indicating the issue are linked with these species and countries. The involvement of 640 authors from 36 countries indicates increasing interest and Nepal and India are playing key role from the region. Main conclusions: There is spatial variation in research with limited regional and transboundary focus. Attention is needed on understanding the pattern of interactions including meso animals along with improved management interventions through integrated and transboundary cooperation for tackling the issue.

Point 1: Camera traps have become an extensively utilized tool in ecological research, but the processing of images created by a network of camera traps rapidly becomes an overwhelming task, even for small networks. Point 2: We used transfer training to create convolutional neural network (CNN) models for identification and classification. By utilizing a small dataset with less than 10,000 labeled images the model was able to distinguish between species and remove false triggers. Point 3: We trained the model to detect 17 object classes with individual species identification, reaching an accuracy of 92%. Previous studies have suggested the need for thousands of images of each object class to reach results comparable to those achieved by human observers; however, we show that such accuracy can be achieved with fewer images. Point 4: Additionally, we suggest several alternative metrics common to computer science studies to accurately evaluate the performance of such camera trap image processing models, as well as methods to adapt the model building process to two targeted purposes.

1. The receiver operating characteristic (ROC) and precision-recall (PR) plots have been widely used to evaluate the performances of species distribution models. Plotting ROC/PR curves requires a traditional test set with both presence and absence data (namely PA approach), but species absence data are usually not available in reality. Plotting ROC/PR curves from presence-only data while treating background data as pseudo absence data (namely PO approach) may provide misleading results. 2. In this study we propose a new approach to calibrate the ROC/PR curves from presence and background data with user-provided information on a constant c, namely PB approach. An estimate of c can also be derived from the PB-based ROC/PR plots given that a model with good ability of discrimination is available. We used three virtual species and a real aerial photography to test the effectiveness of the proposed PB-based ROC/PR plots. Different models (or classifiers) were trained from presence and background data with various samples sizes. The ROC/PR curves plotted by PA approach were used to benchmark the curves plotted by PO and PB approaches. 3. Experimental results show that the curves and areas under curves by PB approach are more similar to that by PA approach as compared with PO approach. The PB-based ROC/PR plots also provide highly accurate estimations of c in our experiment. 4. We conclude that the proposed PB-based ROC/PR plots can provide valuable complements to existing model assessment methods, and they also provide an additional way to estimate the constant c (or species prevalence) from presence and background data.

Amphibian skin secretions (substances produced by the amphibian plus microbiota) plausibly act as a first line of defense against pathogen attack, but may also provide chemical cues for pathogens. To clarify the role of skin secretions in host-parasite interactions, we conducted experiments using cane toads (Rhinella marina) and their lungworms (Rhabdias pseudosphaerocephala) from the range-core and invasion-front of the introduced anurans’ range in Australia. Depending on the geographic area, toad skin secretions can reduce the longevity and infection success of parasite larvae, or attract lungworm larvae and enhance their infection success. These striking differences between the two regions were due both to differential responses of the larvae, and differential effects of the skin secretions. Our data suggest that skin secretions play an important role in host-parasite interactions in anurans, and that the arms race between a host and parasite can rapidly generate spatial variation in critical features of that interaction.

Many large rivers worldwide are enriched with high levels of suspended solids (SS), which are known to be hotspots of many nitrogen (N) transformation processes (e.g., denitrification, nitrification). However, the influence of SS on microbial ammonium (NH4+) recycling remains unclear. Water column NH4+ regeneration rates (REGs) and potential uptake rates (Upots) as well as community biological NH4+ demand (CBAD) was measured in the river-estuary continuum of the third longest river in the world—Yangtze River, where shows dramatic SS gradients. We found that, REGs, Upots, and CBAD all showed increasing trends along the river flow, with higher REGs, Upots, and CBAD in the estuary than in the river sections. The regeneration and uptake of NH4+ were nearly balanced in the river sections, while the positive CBAD in the estuary indicated obvious NH4+ demand of microbes. Concentrations of SS, which also controls the content of chemical oxygen demand and particulate N, were the main factor influencing NH4+ recycling rates and CBAD. SS induced regenerated NH4+ in the river-estuary continuum of Yangtze River was estimated to be 21.81 × 108 kg N yr−1 and accounted for about 25% of total N inputs, suggesting that regenerated NH4+ is an important N source for microbes and may influence nutrient dynamics in lower coasts. To our knowledge, this is the first to report NH4+ recycling in Yangtze River with an emphasis on its influencing factors and contribution to N budgets.

The Antarctic alga Chlamydomonas sp. UWO241 is an obligate psychrophile that thrives in the cold but is unable to survive at moderate, seemingly innocuous temperatures. We dissect the responses of UWO241 to temperature stress using global metabolomic approaches. UWO241 exhibits slow growth at 4°C, a temperature closest to its natural habitat, and faster growth at higher temperatures of 10-15°C. We demonstrate that the slower growth-rate characteristic of UWO241 at 4⁰C is not necessarily a hallmark of stress. UWO241 constitutively accumulates high levels of protective metabolites including soluble sugars, polyamines and antioxidants at a range of steady-state temperatures. In contrast, the mesophile Chlamydomonas reinhardtii accumulates these metabolites only during cold stress. Despite low growth rates, 4°C-grown UWO241 cultures had a higher capacity to respond to heat stress (24°C) and accumulated increased amounts of antioxidants, lipids and soluble sugars, when compared to cultures grown at 10-15°C. We conclude that the slower growth rate and the unique psychrophilic physiological characteristic of UWO241 grown at 4⁰C result in a permanently re-routed steady-state metabolism, which contributes to its increased resistance to heat stress. Our work adds to the growing body of research on temperature stress in psychrophiles, many of which are threatened by climate change.

The era of "big data'' promises to provide new hydrologic insights, and open web-based platforms are being developed and adopted by the hydrologic science community to harness these datasets and data services. This shift accompanies advances in hydrology education and the growth of web-based hydrology learning modules, but their capacity to utilize emerging open platforms and data services to enhance student learning through data-driven activities remains largely untapped. Given that generic equations may not easily translate into local or regional solutions, teaching students to explore how well models or equations work in particular settings or to answer specific problems using real data is essential. This paper introduces an open web-based learning module developed to advance data-driven hydrologic process learning, targeting upper level undergraduate and early graduate students in hydrology and engineering. The module was developed and deployed on the HydroLearn open educational platform, which provides a formal pedagogical structure for developing effective problem-based learning activities. We found that data-driven learning activities utilizing collaborative open web platforms like HydroShare and CUAHSI JupyterHub computational notebooks allowed students to access and work with datasets for systems of personal interest and promoted critical evaluation of results and assumptions. Initial student feedback was generally positive, but also highlights challenges including trouble-shooting and future-proofing difficulties and some resistance to open-source software and programming. Opportunities to further enhance hydrology learning include better articulating the myriad benefits of open web platforms upfront, incorporating additional user-support tools, and focusing methods and questions on implementing and adapting notebooks to explore fundamental processes rather than tools and syntax. The profound shift in the field of hydrology toward big data, open data services and reproducible research practices requires hydrology instructors to rethink traditional content delivery and focus instruction on harnessing these datasets and practices in the preparation of future hydrologists and engineers.

We aimed to investigate the relationship between COVID-19 and Erectile Dysfunction (ED) and the effect of serum testosterone level on the disease prognosis. Between April-December 2020, 70 patients who admitted with a complaint of ED after having COVID-19 and whose serum testosterone level was checked for any reason before COVID-19. The patients filled the International Index of Erectile Function (IIEF-5) and their testosterone level was checked. This questionnaire was arranged to present the first month before COVID-19 and after COVID-19. The patients were registered as 20-40 age group 1, 40-60 age group 2 and 60 years and above group 3. Testosterone levels of the patients before and after COVID-19 were compared. The relationship between testosterone levels and hospitalization in the intensive care was evaluated. It was revealed that testosterone levels and IIEF-5 scores after COVID-19 in all three groups were statisticaly and significantly different compared to the period before COVID-19 (p <0.05). Testosterone levels of patients in need of intensive care were significantly higher than those without any need of intensive care (p <0.05). Our study has presented that COVID-19 may cause ED and high testosterone levels increase the rate of hospitalization in the intensive care by intensifying the disease. Keywords COVID-19, erectile dysfunction, testosterone What’s already known about this topic? The relationship between Erectile Dysfunction (ED) and COVID-19 develops due to vasculogenic and hormonal causes which were caused by the primary disease. What does this article add? We showed with this study that COVID-19 causes ED in all age groups, reduces testosterone levels seriously. Moreover, we also presented that the higher the testosterone levels during COVID-19, the more severe the disease progresses.

Background and objectives Breast cancer is one of the most common malignant tumors in women. Herein, we compared the analgesic efficacy of ultrasound-guided rhomboid intercostal nerve block , erector spinae plane block and serratus plane block after modified radical mastectomy of unilateral breast cancer. Methods: A total of 90 patients who underwent modified radical mastectomy for unilateral breast cancer were selected. patients were randomly allocated into three groups receiving ultrasound-guided serratus plane block, erector spinae plane block, and the rhomboid intercostal block group. All groups received 20 mL 0.5% ropivacaine. Within 24 hours after operation, the patient received intravenous injection of tramadol 1-2 mg/kg to relieve pain in the surgical ward. Results: The dosage of tramadol 24-hours postoperatively in the rhomboid intercostal block and erector spinae plane block groups was significantly lower than that in serratus plane block group (P < 0.001). There was no statistical difference in tramadol consumption between the erector spinae plane block and rhomboid intercostal block groups within 24 hours (P = 0.676). The numerical rating scale scores in the erector spinae plane block and rhomboid intercostal block groups at 0.5, 1, 3, 6, 12, 18, and 24 hours postoperatively once patients were active were significantly lower than in the serratus plane block group (P < 0.05 for all comparisons); however, The numerical rating scale scores between rhomboid intercostal block and erector spinae plane block groups did not differ significatively within 24 hours after surgery when patients were active. Conclusions: Ultrasound-guided rhomboid intercostal block and erector spinae plane block can reduce the dosage of tramadol and NRS score compared with serratus plane block after modified radical mastectomy.

Background: Primary and secondary malignant tumors of the spine are relatively uncommon in the pediatric population but are associated with high morbidity and significantly decreased quality of life due to pain. Local management of these tumors is often challenging due to the importance of maintaining vertebral mechanical integrity as well as the spinal growth potential. Typically, surgery and/or radiation therapy have been used in the primary management of these tumors. However, treatment options become more limited when there is relapse or refractory disease, with re-resection or additional radiotherapy often not being viable therapies. The purpose of this study was to assess the feasibility of percutaneous vertebroplasty as a palliative treatment for intractable pain secondary to malignant tumors affecting the spine. Procedure: A retrospective review of all cases of vertebroplasty performed at a single institution between 2003 and 2020. Results: A total of 11 vertebral levels were treated in 3 children with relapsed cancers (two with alveolar rhabdomyosarcoma, and one with Wilms tumor). All three had clinical benefit with sustained significant improvement in their pain. Conclusions: Vertebroplasty is a currently underutilized modality that might provide excellent pain palliation in cases of relapsed cancer in the spine. Future prospective studies of its use in pediatric oncology are needed.

Background: In times of antibiotic resistance, Antimicrobial Stewardship Programs (ASP) emerge as a strategy to improve clinical outcomes and hospital resource management. Methods: The study was conducted on a single-center retrospective cohort of adult inpatients admitted to a public hospital in Brazil’s capital and submitted to ASP from September 2018 to April 2019, aiming to assess the clinical and economic impact of following ASP instructions. Results: The medical records of 449 patients were included. Mean age was 54.92 years, with a predominance of male sex 273 (60.93%), and 374 (83.48%) had comorbidities. Only 52.56% of the prescriptions followed the guidelines of ASP. The study demonstrated a significant improvement in clinical outcomes, such as a reduction of mortality (p=0.01), of hospital length of stay (p<0.01) and of ICU admissions (p<0.01). We also detected potential savings per patient provided by compliance with ASP’s recommendations. Conclusion: The present study was able to demonstrate positive clinical outcomes associated with the implementation of an ASP in a real-world scenario.

The Short Synacthen Test is the way that we most often determine whether people's adrenal glands are working. We here have shown that an extra blood sample taken at 60 minutes post Synacthen vs a 30 minute sample alone, may make the test more effective at excluding those people who do not need to go on hydrocortisone supplementation or need further evaluation.

Physics and Chemistry are fundamental composites of medicine. Concepts and theories from these fields continuously influence modern day medicine, including the development of novel diagnostic methods, pharmacological and surgical interventions and inadvertently, patient care. The use of scientific approaches to improve existing clinical practices is important to understand. This includes the exploration of key innovators that were ahead of their time when inventions were developed to support “the collateral sciences”. Two such innovators are Golding Bird and Nikola Tesla; 2 unique and incredibly versatile scientists. Electrotherapeutics has had a remarkable history. The use of Torpedo Fish (Torpedo mamorata, Malopterurus electricus) to provide analgesia was reported by Scribonius Largus in AD 47 in his monumental work Compositiones Medicae

Purpose : Rocuronium bromide is a painful agent while general anesthesia induction. The aim of the study is to investigate the effects of cox inhibitors as a resque agent against the rocuronium pain Methodology : Sixty patients enrolled for the general anesthesia enrolled in this study. Patients were allocated into two groups (Group 1: Dexkethoprofen group, Group 2: Control group) .Pain was evaluated by during rocuronium injection, patients were scored by a scale showed below. 0;No movement response to injection 1;Mild movement response to injection 2;Hand withdrawal response to injection 3;Arm withdrawal response to injection We also evaluated the pain with 2 questions when the patient was in the recovery room.Question 1.What was the last feeling before you fall into sleep? and question 2. Did you feel any pain on your hand during medication injection for anesthesia? Results:There were differences between the groups in terms of total pain score for example in group 1 there were 16 (53%) patients who did not make any movement during rocuronium injection while there were 22 (73%) patients in group 2.There was significant difference in injection rocuronium bromide pain between group 1: dexkethoprofen group, Group 2: control group in terms of the answer to the second question.Patients felt less pain than the control group. Conclusion:The effect of cox inhibitors on rocuronium pain was seen in our study but check is also effective in reducing pain in vascular width.

Objectives: Literature has shown a high prevalence of poor inhaler technique amongst COPD patients throughout the past several decades. We aim to study the patients’ perspective on the use of inhalers to understand how inhaler therapy can be better approached. Methods: COPD patients who were regularly using pressurized metered-dose inhaler(s) (pMDI) with or without spacers were recruited to complete a survey regarding their perception of inhaler use. Results: One hundred and one patients participated in the study. 91 (90.1%) reported that they use their inhaler correctly and 80 (79.2%) indicated that using their inhaler is easy. 35 (34.7%) indicated that they prefer to consolidate all of their inhalers. When asked about previous training, 25 (24.8%) reported that they have not been shown how to use inhalers before. Conclusions: Despite high prevalence of poor inhaler technique, COPD patients may not be aware of their poor technique—patients are confident in their use of inhalers and find its use easy. This discrepancy has not been discussed in literature before. Increasing patient awareness regarding poor inhaler technique and the importance of correct use of the device may be the key next step to address poor inhaler technique amongst COPD patients.

Abstract Objective: To demonstrate evidence from available clinical studies to clarify the scientific points that have been achieved in relation to thyroid disorders and ejaculatory dysfunction. Data sources: Clinical trial articles published in English on Medline. Eligibility criteria: Clinical studies that investigated the association of thyroid disorders with the ejaculatory function of subjects and the trials evaluating the effect of thyroid dysfunction treatment on the ejaculatory function of the subjects were eligible. Synthesis methods: We searched Medline with “ejaculation” and different combinations of “thyroid,” “serum TSH,” “serum T3,” “serum T4” keywords in PubMed. Results: Standardized mean serum thyroid-stimulating hormone (TSH) levels in premature ejaculation (PE) sufferers differed from non-PE control subjects (p=.05). Hyperthyroidism was associated with increased odds among PE subjects (OR=2.0, p=.03). Delayed ejaculation was seen with increased odds in hypothyroid patients compared with hyperthyroidism patients (OR=57, p=.0001). Serum TSH and mean intra-vaginal ejaculation latency time (IELT) of the subjects showed a correlation both before and after treatment for thyroid disorder. Treatment of thyroid disorders improved the mean IELT measures of the subjects. The overall estimate of the effect of hyperthyroidism treatment on mean IELT was .64 (p=.0001) in the random-effects model. Limitations: The low quality and quantity of evidence from available studies limited the interpretation of our study findings. Conclusions: The causal relationship between ejaculatory dysfunction and thyroid disorders remains to be clarified. Sufferers of delayed ejaculation acquired PE subjects, and PE sufferers who have accompanying erectile dysfunction and/or anxiety may benefit from thyroid disorder investigation.

During the COVID-19 pandemic, many specialists doctors found themselves in a situation that they had not faced for a long time: treating patients out of their subarea of expertise. The possibilities of teaching and learning through the modalities of webinars brought to these days the urgent necessity for teamwork and interdisciplinary approach, taking advantage of different areas of expertise to the same patient. With the amount of papers published and the speed at which data are accessed, and analyzed it is impossible to be aware of new findings in all medical areas. The lesson that the COVID-19 pandemic brought to us was the urgent need for the interdisciplinary approach to treating better our patients, and not only each disease they present with. We must review our traditional approach to medical students, residents, colleagues, and patients in which we became stuck to distance and time obstacles. We must use the technology on our behalf to offer the best treatment and follow-up for patients. We live now in the Medicine 4.0 era. As Darwin a long time ago proved: we must evolve!

ABSTRACT (195 words) Pharmacological cardioversion using intravenous antiarrhythmic agents is commonly indicated in symptomatic patients with recent-onset atrial fibrillation (AF). Except in hemodynamically unstable patients who require emergency direct current electrical cardioversion, for the majority of hemodynamically stable patients, pharmacological cardioversion represents a valid option and requires the clinician to be familiar with the properties and use of antiarrhythmic agents. The main characteristics of selected intravenous antiarrhythmic agents for conversion of recent-onset AF, the reported success rates and possible adverse events are discussed. Among intravenous antiarrhythmics, flecainide, propafenone, amiodarone, sotalol, dofetilide, ibutilide and vernakalant are commonly used. Antazoline, an old antihistaminic agent with antiarrhythmic properties was also reported to give encouraging results. Intravenous flecainide and propafenone are the only class I agents still recommended by recent guidelines. Intravenous new class III agents as dofetilide and ibutilide have high and rapid efficacy in converting AF to sinus rhythm but require strict surveillance with ECG monitoring during and after intravenous administration because the potential risk of QT prolongation and Torsades de Pointes which can be prevented and properly managed. Vernakalant, a partial atrial selective was shown to have a high success rate and to be safe in real life use.

Ecological research is often hampered by the inability to quantify animal diets. Diet composition can be tracked through DNA metabarcoding of faecal samples, but whether (complex) diets can be quantitatively determined with metabarcoding is still debated and needs validation using free-living animals. This study validates that DNA metabarcoding of faeces can retrieve actual ingested taxa, and most importantly, that read numbers retrieved from sequencing can also be used to quantify relative abundances of dietary taxa. Validation was done with the hole-nesting insectivorous Pied Flycatcher whose diet was quantified using camera footage. Size-adjusted counts of food items delivered to nestlings were used to approximate provided biomass of prey orders and families and subsequently nestling faeces were assessed through DNA metabarcoding. To explore potential effects of digestion, stomach and lower intestine samples of freshly collected birds were subjected to DNA metabarcoding. For metabarcoding with Cytochrome Oxidase subunit I (COI), we modified published invertebrate COI primers LCO1490 and HCO1777, which reduced host reads to 0.03%, and amplified Arachnida DNA without significant changing the recovery of other arthropod taxa. DNA metabarcoding retrieved all commonly camera-recorded taxa. Overall, and in each replicate year (N = 3), the relative abundances of size-adjusted prey counts and COI read numbers correlated at R=0.85 (CI:0.68-0.94) at order level and at R=0.75 (CI:0.67-0.82) at family level. Similarity in arthropod community composition between stomach and intestines suggested limited digestive bias. This DNA metabarcoding validation demonstrates that quantitative analyses of arthropod diet is possible. We discuss the ecological applications for insectivorous birds.

Objective To assess if delivery mode and duration of labour in a first labour of spontaneous onset is associated with gestational length, delivery mode 3and neonatal outcome in the subsequent pregnancy. Study Design Retrospective analysis of prospectively collected data. Setting 15 Maternity units in North West London (1988 to 2000). Population 30,840 women with spontaneous onset of labour in pregnancy 1 and a subsequent birth reported in the same database. Methods Assessment of outcomes by mode of delivery in pregnancy 1, restricting the analysis to the difference in the gestational length between pregnancy 1 and 2. Main Outcome Measures Gestational length, mode of delivery and neonatal unit admission in pregnancy 2. Results Caesarean section (CS) in the first or second stage of labour in pregnancy 1 was associated with pregnancy 2 being a median of 5 and 8 days shorter and a preterm birth rate of 6.0% and 10.1% respectively, whereas following a spontaneous or instrumental birth in pregnancy 1 the median duration was similar, with preterm delivery rates of 4.5% and 3.9%. 56.2% of women with a CS in pregnancy 1 had a repeat CS and 12.5% of their babies were admitted to neonatal unit, compared with 5.3% of women with vaginal birth. Longer labours were associated with shorter gestations in pregnancy 2. Conclusions Compared to vaginal birth, an emergency CS in the first term pregnancy is associated with a shorter gestational length, increased rate of repeat CS and increased risk of NNU admission in the next pregnancy.

Objective To test the hypothesis that there is seasonal variation in the rates of gestational diabetes (GDM) diagnosed using a 2 hour oral glucose tolerance test. Design Monthly assessment of the percentage of women screened from 1st April 2016 to the 31st December 2020 who were diagnosed as having gestational diabetes Setting London Teaching Hospital Population 28,128 women receiving antenatal care between April 1st 2016 and 31 December 2020. Methods Retrospective study of prospectively collected data. Main Outcome Measures Proportion of women screened diagnosed as having gestational diabetes. Results The mean (SD) percentage of women diagnosed with GDM was 14.78 (2.24) in summer (June, July, August) compared with 11.23 (1.62) in winter (p < 0.001), 12.13 (1.94) in spring (p = 0.002), and 11.88 (2.67) in autumn (p = 0.003). There was a highly significant positive correlation of the percentage testing positive for GDM with the mean maximum monthly temperature (R2 = 0.248, p < 0.001). There was a statistically significant 33.8% increase in the proportion of GDM diagnoses from June 2020 onwards, possibly related to a reduction in exercise secondary to the Covid-19 pandemic. Conclusions There is a 23.3% higher rate of GDM diagnoses in the warmer summer months. There has been a 33.8% rise in GDM diagnoses associated with the Covid-19 pandemic.

Gardner syndrome (GS) with odontogenic sinusitis is rare but should be suspected in patients with multiple osteomas of the skull and facial bones, excess teeth, impacted teeth, and odontomas. Early diagnosis of GS and treatment for familial adenomatous polyposis may improve prognosis.

Risk models were developed to provide clinicians and hospitals with a tool to evaluate risk-adjusted outcomes and to guide quality improvement. The Society of Thoracic Surgeons (STS) Predicted Risk of Mortality (PROM) is the most commonly used risk algorithm, others being the EuroSCORE logistic and additive algorithm and the Ambler Risk Score. These models utilize pre-operative patient characteristics to predict operative risk and early outcomes. Although a great deal of effort has gone into models to predict short-term patient outcomes after common cardiac operations, there has been relatively little effort to develop a statistical algorithm to predict long-term outcomes. Moreover, no risk model takes into account early post-operative complications to construct an algorithm to predict long-term outcomes. The formulation of a risk stratification score based on post-operative complications following common cardiac surgical procedures may be used to estimate the likelihood of long-term survival for individual complications, as well as various permutations and combinations of complications. This may have profound implications in devising strategies to prevent the most devastating combination of complications. Also, this may assist in informing patients and families of the predicted survival after a particular complication or a combination of complications. As Dokollari et all pointed out, there is impetus towards the direction of formulating a risk stratification score, and this may indeed be the need of the hour.