Activity of imipenem/relebactam against carbapenemase-producing Enterobacteriaceae with high colistin resistance.

OBJECTIVES: Imipenem/relebactam, an investigational ß-lactam/ß-lactamase inhibitor combination for treatment of Gram-negative infections, and comparators including ceftazidime/avibactam, piperacillin/tazobactam and colistin were tested for activity against representative carbapenemase-producing Enterobacteriaceae (CPE) isolates. METHODS: MICs of the antimicrobial agents were determined using standard broth microdilution methodology for CPE isolates collected from Indiana patients, primarily during the time frame of 2013-17 (n = 199 of a total of 200 isolates). Inhibitors were tested at 4 mg/L in all combinations. RESULTS: Of the CPE in the study, 199 produced plasmid-encoded KPC class A carbapenemases; 1 Serratia marcescens isolate produced the SME-1 chromosomal class A carbapenemase. MIC50/MIC90 values of imipenem/relebactam were ≤0.25/0.5 mg/L, whereas MIC50/MIC90 values of ceftazidime/avibactam were 1/2 mg/L. Resistance to colistin was observed in 54% (n = 97) of 180 non-Serratia isolates tested (MIC50 of 4 mg/L). Colistin resistance mechanisms included production of a plasmid-encoded mcr-1-like gene (n = 2) or an inactivated mgrB gene. CONCLUSIONS: Imipenem/relebactam was the most potent agent tested against CPE in this study and may be a useful addition to the antimicrobial armamentarium to treat infections caused by these pathogens.

Resource utilization and outcome among patients with selective versus nonselective troponin testing.

OBJECTIVE: In patients with suspected acute coronary syndrome (ACS), troponin testing is effective for diagnosis and prognosis. Troponin testing has now expanded to include patients without suspected ACS. This nonselective troponin testing has unknown consequences for resource utilization and outcome. Therefore, we examined selective versus nonselective troponin testing with respect to patient characteristics, resource utilization, and outcome. METHODS: This retrospective 1-year study included all patients with troponin testing at a U.S. emergency department. Testing was classified as selective (ACS) or nonselective (non-ACS) based on admission ICD-9 codes. Troponin upper reference limit (URL) was ≥99th percentile. RESULTS: Among 47,053 patients, troponin was measured in 9109 (19%) of whom 5764 were hospitalized. Admission diagnosis was non-ACS in 4427 (77%) and ACS in 1337 (23%). Non-ACS patients were older, 71±17 versus 65±16 years, with longer hospital stay, 77 versus 32 h, and greater 1-year mortality 22% versus 6.7%; P<.001. In patients with troponin ≥URL, revascularization was performed in 64 (4.7%) of non-ACS versus 213 (48%) of ACS; P<.001. In patients with troponin 80% of the non-ACS population CONCLUSIONS: Contemporary troponin testing is frequently nonselective. The non-ACS and ACS populations differ significantly regarding clinical characteristics, revascularization rates, and outcomes. Troponin elevation is a powerful predictor of 1-year mortality in non-ACS, this association reveals an opportunity for risk stratification and targeted therapy. KEY QUESTIONS: In patients with suspected acute coronary syndrome (ACS), troponin testing is effective for diagnosis and prognosis. However, troponin testing has now expanded to include patients without suspected ACS. This nonselective troponin testing has unknown consequences for hospital resource utilization and patient outcome. Our findings demonstrate contemporary troponin testing is largely nonselective (77% of testing was performed in patients without acute coronary syndrome). In comparison to patients with acute coronary syndrome, those with non-acute coronary syndrome are older, with longer hospital stay, lower revascularization rates, and greater 1-year mortality. Troponin elevation identifies a high-risk population in both acute coronary syndrome and non-acute coronary syndrome populations, yet effective treatment for the latter is lacking.

Competency-Based Education in Low Resource Settings: Development of a Novel Surgical Training Program.

BACKGROUND: The unmet burden of surgical disease represents a major global health concern, and a lack of trained providers is a critical component of the inadequacy of surgical care worldwide. Competency-based training has been advanced in high-income countries, improving technical skills and decreasing training time, but it is poorly understood how this model might be applied to low- and middle-income countries. We describe the development of a competency-based program to accelerate specialty training of in-country providers in cleft surgery techniques. METHODS: The program was designed and piloted among eight trainees at five international cleft lip and palate surgical mission sites in Latin America and Africa. A competency-based evaluation form, designed for the program, was utilized to grade general technical and procedure-specific competencies, and pre- and post-training scores were analyzed using a paired t test. RESULTS: Trainees demonstrated improvement in average procedure-specific competency scores for both lip repairs (60.4-71.0%, p < 0.01) and palate (50.6-66.0%, p < 0.01). General technical competency scores also improved (63.6-72.0%, p < 0.01). Among the procedural competencies assessed, surgical markings showed the greatest improvement (19.0 and 22.8% for lip and palate, respectively), followed by nasal floor/mucosal approximation (15.0%) and hard palate dissection (17.1%). CONCLUSION: Surgical delivery models in LMICs are varied, and trade-offs often exist between goals of case throughput, quality and training. Pilot program results show that procedure-specific and general technical competencies can be improved over a relatively short time and demonstrate the feasibility of incorporating such a training program into surgical outreach missions.

Improved Early Cleft Lip and Palate Complications at a Surgery Specialty Center in the Developing World.

OBJECTIVE: To evaluate complication rates following cleft lip and cleft palate repairs during the transition from mission-based care to center-based care in a developing region. PATIENTS AND DESIGN: We performed a retrospective review of 3419 patients who underwent cleft lip repair and 1728 patients who underwent cleft palate repair in Guwahati, India between December 2010 and February 2014. Of those who underwent cleft lip repair, 654 were treated during a surgical mission and 2765 were treated at a permanent center. Of those who underwent cleft palate repair, 236 were treated during a surgical mission and 1491 were treated at a permanent center. SETTING: Two large surgical missions to Guwahati, India, and the Guwahati Comprehensive Cleft Care Center (GCCCC) in Assam, India. MAIN OUTCOME MEASURE: Overall complication rates following cleft lip and cleft palate repair. RESULTS: Overall complication rates following cleft lip repair were 13.2% for the first mission, 6.7% for the second mission, and 4.0% at GCCCC. Overall complication rates following cleft palate repair were 28.0% for the first mission, 30.0% for the second mission, and 15.8% at GCCCC. Complication rates following cleft palate repair by the subset of surgeons permanently based at GCCCC (7.2%) were lower than visiting surgeons ( P < .05). CONCLUSIONS: Our findings support the notion that transitioning from a mission-based model to a permanent facility-based model of cleft care delivery in the developing world can lead to decreased complication rates.

Primary Cleft Lip and Palate Repair in Assam, India: Does Preoperative Anthropometric Analysis Help Identify Patients With Increased Surgical Risk in a Clinically Prescreened Population?

OBJECTIVE: To compare anthropometric z-scores with incidence of post-operative complications for patients undergoing primary cleft lip or palate repair. DESIGN: This was a retrospective observational analysis of patients from a surgical center in Assam, India, and includes a cohort from a single surgical mission completed before the opening of the center. SETTING: Patients included in the study underwent surgery during an Operation Smile mission before the opening of Operation Smile's Guwahati Comprehensive Cleft Care Center in Guwahati, India. The remaining cohort received treatment at the center. All patients received preoperative assessment and screening; surgery; and postoperative care, education, and follow-up. PATIENTS, PARTICIPANTS: Our sample size included 1941 patients and consisted of all patients with complete information in the database who returned for follow-up after receiving primary cleft lip repair or primary cleft palate repair between January 2011 and April 2013. INTERVENTIONS: Preoperative anthropometric measurements. MAIN OUTCOME MEASURE(S): Postoperative complications. RESULTS: Anthropometric z-scores were not a significant predictor of adverse surgical outcomes in the group analyzed. Palate surgery had increased risk of complication versus lip repair, with an overall odds ratio of 5.66 (P < .001) for all patients aged 3 to 228 months. CONCLUSIONS: Anthropometric z-scores were not correlated with increased risk of surgical complications, possibly because patients were well screened for malnutrition before surgery at this center. Primary palate repair is associated with an approximate fivefold increased risk of developing postoperative complication(s) compared with primary lip repair.

Surgical Complications in 1408 Primary Cleft Palate Repairs Operated at a Single Center in Guwahati, Assam, India.

OBJECTIVE: To analyze surgical complications after primary cleft palate repair in a setting with limited resources. PATIENTS AND DESIGN: A total of 1608 consecutive cleft palate repairs with 1408 follow-ups, operated upon between 2011 and 2013, were reviewed retrospectively through medical records. Patients were 10 months to 50 years old at the time of surgery, with a median age of 9 years. SETTING: Guwahati Comprehensive Cleft Care Center, Guwahati, India. INTERVENTION: Primary cleft palate repair. MAIN OUTCOME MEASURES: Postoperative complications in terms of necrosis, dehiscence, fistula, infection, and "hanging palate" were assessed, as was perioperative bleeding. Logistic regression was used with complication (yes/no) as the binary dependent variable and with age, cleft type, and surgeon (visiting/long-term) as covariates. RESULTS: The overall incidence of postoperative complications was 16.9% with a fistula rate of 13.6%. The incidence of perioperative bleeding was 1.8%. Logistic regression analysis identified cleft severity (P ≤ .001) and visiting surgeon (P ≤ .01) as factors related to the incidence of postoperative complications. Age at surgery was related to both the incidence of postoperative complications (P ≤ .001) and perioperative bleeding (P < .05). CONCLUSION: Due to increased risks of surgical complications, older patients with complete clefts should only be operated upon after careful consideration. In addition, these patients should be assigned to surgeons experienced with this cleft type.

Limited Chances of Speech Improvement After Late Cleft Palate Repair.

Late primary palatal repair is a common phenomenon, and many patients across the world will be operated on at a far later age than is suggested for normal speech development. Nevertheless, little is known about the speech outcomes after these procedures and conflicting results exist among the few studies performed. In this study, blinded preoperative and postoperative speech recordings from 31 patients operated on at Guwahati Comprehensive Cleft Care Center in Assam, India, older than 7 years were evaluated. Six non-Indian speech and language pathologists evaluated hypernasal resonance and articulation, and 4 local laymen evaluated the speech intelligibility/acceptability of the samples. In 25 of 31 cases, the evaluators could not detect any speech improvement in the postoperative recordings. A clear trend of postoperative improvement was only found in 6 of the 31 patients. Among these 6 patients, lesser clefts were overrepresented. Our findings together with previous studies suggest that late palate repairs have the potential to improve speech, but the probability for improvement and degree of improvement is low, especially in older adolescents and adults with complete clefts.

Speech and Speech-Related Quality of Life After Late Palate Repair: A Patient's Perspective.

Many patients with cleft palate deformities worldwide receive treatment at a later age than is recommended for normal speech to develop. The outcomes after late palate repairs in terms of speech and quality of life (QOL) still remain largely unstudied. In the current study, questionnaires were used to assess the patients' perception of speech and QOL before and after primary palate repair. All of the patients were operated at a cleft center in northeast India and had a cleft palate with a normal lip or with a cleft lip that had been previously repaired. A total of 134 patients (7-35 years) were interviewed preoperatively and 46 patients (7-32 years) were assessed in the postoperative survey. The survey showed that scores based on the speech handicap index, concerning speech and speech-related QOL, did not improve postoperatively. In fact, the questionnaires indicated that the speech became more unpredictable (P < 0.01) and that nasal regurgitation became worse (P < 0.01) for some patients after surgery. A total of 78% of the patients were still satisfied with the surgery and all of the patients reported that their self-confidence had improved after the operation. Thus, the majority of interviewed patients who underwent late primary palate repair were satisfied with the surgery. At the same time, speech and speech-related QOL did not improve according to the speech handicap index-based survey. Speech predictability may even become worse and nasal regurgitation may increase after late palate repair, according to these results.

Early Surgical Complications After Primary Cleft Lip Repair: A Report of 3108 Consecutive Cases.

OBJECTIVE: To analyze short term surgical complications after primary cleft lip repair. PATIENTS AND DESIGN: A total of 3108 consecutive lip repairs with 2062 follow-ups were reviewed retrospectively through medical records. Patients were aged 3 months to 75 years at the time of surgery, with a median of 7 years. SETTING: Guwahati Comprehensive Cleft Care Center, Assam, India. INTERVENTION: Primary cleft lip repair. MAIN OUTCOME MEASURES: Documented complications in terms of dehiscence, necrosis, infection, and suture granuloma were compiled. Logistic regression was used with dehiscence (yes/no) or infection (yes/no) as binary dependant variables. Age, cleft type, and surgeon (visiting/long term) were used as covariates. RESULTS: Among the 2062 patients who returned for early follow-up, 90 (4.4%) had one or more complications. Dehiscence (3.2%) and infection (1.1%) were the most common types of complication. Visiting surgeon, complete cleft, and bilateral cleft were significantly associated with wound dehiscence, and complete cleft was associated with wound infection according to the logistic regression analysis. Of patients with bilateral complete clefts, 6.9% suffered from some degree of wound dehiscence. CONCLUSION: In a setting where presurgical molding is unavailable and patients present at all ages, lip wound dehiscence is a relatively common complication in patients with bilateral complete clefts. The risk of dehiscence, however, is reduced when these cases are assigned to surgeons with experience with these types of clefts. We also found that the incidence of wound infection can be kept relatively low, even without the use of postoperative antibiotics.

Long-term survival in patients with refractory angina.

AIMS: An increasing number of patients with severe coronary artery disease (CAD) are not candidates for traditional revascularization and experience angina in spite of excellent medical therapy. Despite limited data regarding the natural history and predictors of adverse outcome, these patients have been considered at high risk for early mortality. METHODS AND RESULTS: The OPtions In Myocardial Ischemic Syndrome Therapy (OPTIMIST) program at the Minneapolis Heart Institute offers traditional and investigational therapies for patients with refractory angina. A prospective clinical database includes detailed baseline and yearly follow-up information. Death status and cause were determined using the Social Security Death Index, clinical data, and death certificates. Time to death was analysed using survival analysis methods. For 1200 patients, the mean age was 63.5 years (77.5% male) with 72.4% having prior coronary artery bypass grafting, 74.4% prior percutaneous coronary intervention, 72.6% prior myocardial infarction, 78.3% 3-vessel CAD, 23.0% moderate-to-severe left-ventricular (LV) dysfunction, and 32.6% congestive heart failure (CHF). Overall, 241 patients died (20.1%: 71.8% cardiovascular) during a median follow-up 5.1 years (range 0-16, 14.7% over 9). By Kaplan-Meier analysis, mortality was 3.9% (95% CI 2.8-5.0) at 1 year and 28.4% (95% CI 24.9-32.0) at 9 years. Multivariate predictors of all-cause mortality were baseline age, diabetes, angina class, chronic kidney disease, LV dysfunction, and CHF. CONCLUSION: Long-term mortality in patients with refractory angina is lower than previously reported. Therapeutic options for this distinct and growing group of patients should focus on angina relief and improved quality of life.

Lessons learned from two consecutive cleft lip and palate missions and the impact of patient education.

Two consecutive cleft missions were conducted in Guwahati, northeastern India in December 2010 and January 2011. In the later mission, a standardized patient education program for postoperative care was introduced. The objective of this study was to retrospectively evaluate the impact of the patient education program on cleft lip complications in terms of wound infection and dehiscence. Two hundred ninety-eight cleft lip repairs were performed in the first mission and 220 (74%) returned for early follow-up. In the second mission, 356 patients were operated on and 252 (71%) returned for follow-up. From the first mission, 8 patients (3.7%) were diagnosed with lip wound infection and 21 patients (9.6%) with lip dehiscence. After the second mission, only 1 patient (0.4%) returned with a wound infection and 16 (6.4%) were diagnosed with dehiscence.Using binary logistic regression including age, cleft type, postoperative antibiotics, surgeon, and patient education program as covariates, the patient education program stood out as the only variable with a statistically significant impact on the incidence of postoperative wound infections. Even though the incidence of lip dehiscence was reduced by one third when the patient education program was utilized, our regression model singled out the surgeons as the only factor significantly related to this type of complication. Moreover, no benefits of postoperative antibiotic prophylaxis were found. Further analysis of the data also implied that the use of tissue adhesive as a compliment to sutures does not reduce the risk of dehiscence.

Improving patient follow-up in developing regions.

BACKGROUND: Cleft surgery follow-up in developing regions is challenging. This study evaluated rates, costs, and satisfaction of 2 follow-up programs at the Guwahati Comprehensive Cleft Care Centre (GC4) in Assam, India. METHODS: For this study, 10,582 postoperative visits were analyzed from May 2011 to November 2013. A questionnaire was administered to subsets of follow-up patients at both locations. Costs were calculated. RESULTS: Eighty-five percent of patients had follow-up at GC4, and 15% were seen in the patients' local districts. One hundred ninety-five questionnaires were completed (122 at GC4, 73 in local districts). Patients with local follow-up had fewer accompanying family members (mean, 1.95 vs 0.99; P = 0.00), fewer days off work (mean, 1.84 vs 1.15; P = 0.19), less lost income (Indian rupees 367 vs 143, P = 0.00), and lower direct costs (mean Rs, 911 vs 299; P = 0.00). The financial burden of local follow-up was significantly lower (P = 0.003). No significant differences were seen for convenience, likelihood of attending follow-up, or satisfaction. Follow-ups increased after revising programs from a mean of 139 monthly visits (follow-up to surgery ratio of 0.722) to a mean of 363 visits (ratio of 1.57). The center's mean cost for local follow-up was Rs 303 per patient, whereas the estimated costs would have been Rs 1100 for follow-up at the center. CONCLUSIONS: This study demonstrates potential improvements in costs and outcomes by changing the model of care. Despite significant follow-up challenges, much progress can be achieved through process changes and outreach follow-up programs. The results have important applications across the developing world.

Surgical education through video broadcasting.

Surgical training is facing new obstacles. As advancements in medicine are made, surgeons are expected to know more and to be able to perform more procedures. In the western world, increasing restrictions on residency work hours are adding a new hurdle to surgical training. In low-resource settings, a low attending-to-resident ratio results in limited operative experience for residents. Advances in telemedicine may offer new methods for surgical training. In this article, the authors share their unique experience using live video broadcasting of surgery for educational purposes at a comprehensive cleft care center in Guwahati, India.

Providing more than health care: the dynamics of humanitarian surgery efforts on the local microeconomy.

Humanitarian cleft surgery has long been provided by teams from resource-rich countries traveling for short-term missions to resource-poor countries. After identifying an area of durable unmet need through surgical missions, Operation Smile constructed a permanent center for cleft care in Northeast India. The Operation Smile Guwahati Comprehensive Cleft Care Center (GCCCC) uses a high-volume subspecialized institution to provide safe, quality, comprehensive, and cost-effective cleft care to a highly vulnerable patient population in Assam, India. The purpose of this study was to profile the expenses of several cleft missions carried out in Assam and to compare these to the expenditures of the permanent comprehensive cleft care center. We reviewed financial data from 4 Operation Smile missions in Assam between December 2009 and February 2011 and from the GCCCC for the 2012-2013 fiscal year. Expenses from the 2 models were categorized and compared. In the studied period, 33% of the mission expenses were spent locally compared to 94% of those of the center. The largest expenses in the mission model were air travel (48.8%) and hotel expenses (21.6%) for the team, whereas salaries (46.3%) and infrastructure costs (19.8%) made up the largest fractions of expenses in the center model. The evolution from mission-based care to a specialty hospital model in Guwahati incorporated a transition from vertical inputs to investments in infrastructure and human capital to create a sustainable local care delivery system.

Early complications after cleft palate repair: a multivariate statistical analysis of 709 patients.

This study presents a large consecutive institutional experience with primary cleft palate repairs. The purpose of this study was to determine the incidence of early complications after cleft palate surgery in a series of nonsyndromic children treated at the authors' comprehensive cleft center. This retrospective analysis includes 709 consecutive patients with cleft palate treated by 6 different staff surgeons at Guwahati Comprehensive Cleft Care Center between April 2011 and December 2012. Secondary cases were excluded from this study. The patients were initially followed up between 1 week and 1 month after surgery. The overall incidence of early complications was determined, and the effect of the extent of clefting, the type of repair, the age at repair, and the operating surgeon were analyzed. Early complications in this study include dehiscence of the wound, fistula formation, hanging palate, and total or partial flap necrosis. There was a 2.4% rate (17/709) of take-back to the operating room in the immediate postoperative period for control of bleeding, although no blood transfusions were required. The incidence of postoperative fistulas in this series was 3.9% (20/512). There was a statistically significant increase in the incidence of cleft palatal fistula for Veau IV clefts, but there were no significant differences with respect to operating surgeon, patient sex, patient age, and type of palatoplasty. The complication and fistula rate is consistent with other published reports from developed countries and provides evidence for the value of this model for surgical delivery in the developing world.

Scalable, sustainable cost-effective surgical care: a model for safety and quality in the developing world, part I: challenge and commitment.

BACKGROUND: With an estimated backlog of 4,000,000 patients worldwide, cleft lip and cleft palate remain a stark example of the global burden of surgical disease. The need for a new paradigm in global surgery has been increasingly recognized by governments, funding agencies, and professionals to exponentially expand care while emphasizing safety and quality. This three-part article examines the evolution of the Operation Smile Guwahati Comprehensive Cleft Care Center (GCCCC) as an innovative model for sustainable cleft care in the developing world. METHODS: The GCCCC is the result of a unique public-private partnership between government, charity, and private enterprise. In 2009, Operation Smile, the Government of Assam, the National Rural Health Mission, and the Tata Group joined together to work towards the common goal of creating a center of excellence in cleft care for the region. RESULTS: This partnership combined expertise in medical care and training, organizational structure and management, local health care infrastructure, and finance. A state-of-the-art surgical facility was constructed in Guwahati, Assam which includes a modern integrated operating suite with an open layout, advanced surgical equipment, sophisticated anesthesia and monitoring capabilities, central medical gases, and sterilization facilities. CONCLUSION: The combination of established leaders and dreamers from different arenas combined to create a synergy of ambitions, resources, and compassion that became the backbone of success in Guwahati.

Scalable, sustainable cost-effective surgical care: a model for safety and quality in the developing world, part II: program development and quality care.

BACKGROUND: The Guwahati Comprehensive Cleft Care Center (GCCCC) is committed to free medical and surgical care to patients afflicted with facial deformities in Assam, India. A needs-based approach was utilized to assemble numerous teams, processes of care, and systems aimed at providing world-class care to the most needy of patients, and to assist them with breaking through the barriers that prohibit them from obtaining services. METHODS: A team of international professionals from various disciplines served in Guwahati full time to implement and oversee patient care and training of local counterparts. Recruitment of local professionals in all disciplines began early in the scheme of the program and led to gradual expansion of all medical teams. Emphasis was placed on achieving optimal outcome for each patient treated, as opposed to treating the maximum number of patients. RESULTS: The center is open year round to offer full-time services and follow-up care. Along with surgery, GCCCC provides speech therapy, child life counseling, dental care, otolaryngology, orthodontics, and nutrition services for the cleft patients under one roof. Local medical providers participated in a model of graded responsibility commiserate with individualized skill and progress, and gradually assumed all leadership positions and now account for 92% of the workforce. Institutional infrastructure improvements positioned and empowered teams of skilled local providers while implementing systemized perioperative processes. CONCLUSION: This needs-based approach to program development in Guwahati was successful in optimization of quality and safety in all clinical divisions.

Scalable, sustainable cost-effective surgical care: a model for safety and quality in the developing world, part III: impact and sustainability.

BACKGROUND: The Guwahati Comprehensive Cleft Care Center (GCCCC) utilizes a high-volume, subspecialized institution to provide safe, quality, and comprehensive and cost-effective surgical care to a highly vulnerable patient population. METHODS: The GCCCC utilized a diagonal model of surgical care delivery, with vertical inputs of mission-based care transitioning to investments in infrastructure and human capital to create a sustainable, local care delivery system. Over the first 2.5 years of service (May 2011-November 2013), the GCCCC made significant advances in numerous areas. Progress was meticulously documented to evaluate performance and provide transparency to stakeholders including donors, government officials, medical oversight bodies, employees, and patients. RESULTS: During this time period, the GCCCC provided free operations to 7,034 patients, with improved safety, outcomes, and multidisciplinary services while dramatically decreasing costs and increasing investments in the local community. The center has become a regional referral cleft center, and governments of surrounding states have contracted the GCCCC to provide care for their citizens with cleft lip and cleft palate. Additional regional and global impact is anticipated through continued investments into education and training, comprehensive services, and research and outcomes. CONCLUSION: The success of this public private partnership demonstrates the value of this model of surgical care in the developing world, and offers a blueprint for reproduction. The GCCCC experience has been consistent with previous studies demonstrating a positive volume-outcomes relationship, and provides evidence for the value of the specialty hospital model for surgical delivery in the developing world.

Cardio-Obstetrics Team-Based Management of a Pregnant Patient With Severe Bioprosthetic Aortic Valve Disease.

A 38-year-old pregnant patient was managed by the cardio-obstetrics multidisciplinary team for severe degenerative bioprosthetic aortic valve failure. She was medically managed utilizing echocardiogram and brain natriuretic peptide until she demonstrated worsening heart failure. A valve and cardio-obstetrics team evaluation led to valve-in-valve transcatheter aortic valve replacement at 30 weeks' gestation.

Convolutional Neural Network Models for Automatic Preoperative Severity Assessment in Unilateral Cleft Lip.

BACKGROUND: Despite the wide range of cleft lip morphology, consistent scales to categorize preoperative severity do not exist. Machine learning has been used to increase accuracy and efficiency in detection and rating of multiple conditions, yet it has not been applied to cleft disease. The authors tested a machine learning approach to automatically detect and measure facial landmarks and assign severity grades using preoperative photographs. METHODS: Preoperative images were collected from 800 unilateral cleft lip patients, manually annotated for cleft-specific landmarks, and rated using a previously validated severity scale by eight expert reviewers. Five convolutional neural network models were trained for landmark detection and severity grade assignment. Mean squared error loss and Pearson correlation coefficient for cleft width ratio, nostril width ratio, and severity grade assignment were calculated. RESULTS: All five models performed well in landmark detection and severity grade assignment, with the largest and most complex model, Residual Network, performing best (mean squared error, 24.41; cleft width ratio correlation, 0.943; nostril width ratio correlation, 0.879; severity correlation, 0.892). The mobile device-compatible network, MobileNet, also showed a high degree of accuracy (mean squared error, 36.66; cleft width ratio correlation, 0.901; nostril width ratio correlation, 0.705; severity correlation, 0.860). CONCLUSIONS: Machine learning models demonstrate the ability to accurately measure facial features and assign severity grades according to validated scales. Such models hold promise for the creation of a simple, automated approach to classifying cleft lip morphology. Further potential exists for a mobile telephone-based application to provide real-time feedback to improve clinical decision making and patient counseling.