Computer-assisted surgery in medical and dental applications.

INTRODUCTION: Computer-assisted surgery (CAS) is a broad surgical methodology that utilizes computer technology to both plan and execute surgical intervention. CAS is widespread in both medicine and dentistry as it allows for minimally invasive and precise surgical procedures. Key innovations in volumetric imaging, virtual surgical planning software, instrument tracking, and robotics have assisted in facilitating the transfer of surgical plans to precise execution of surgical procedures. CAS has long been used in certain medical specialties including neurosurgery, cardiology, orthopedic surgery, otolaryngology, and interventional radiology, and has since expanded to oral and maxillofacial application, particularly for computer-assisted implant surgery. AREAS COVERED: This review provides an updated overview of the most current research for CAS in medicine and dentistry, with a focus on neurosurgery and dental implant surgery. The MEDLINE electronic database was searched and relevant original and review articles from 2005 to 2020 were included. EXPERT OPINION: Recent literature suggests that CAS performs favorably in both neurosurgical and dental implant applications. Computer-guided surgical navigation is well entrenched as standard of care in neurosurgery. Whereas static computer-assisted implant surgery has become established in dentistry, dynamic computer-assisted navigation is newly poised to trend upward in dental implant surgery.

Rosacea Treatment Satisfaction: Matching Adjusted Indirect Treatment Comparison Analysis of Metronidazole Gel or Cream vs Azelaic Acid Foam.

OBJECTIVE: To assess differences in patient-reported treatment side effects and concerns associated with azelaic acid 15% foam (AAF) vs metronidazole cream (MC) and metronidazole gel (MG). METHODS: This study used matching-adjusted indirect comparison (MAIC) to compare patient-reported outcomes from survey data evaluating rosacea treatments. Outcomes of interest included percentages of patients reporting concerns and side effects and measures of importance of the concerns and tolerability of the side effects. Patients in each analysis (MG vs AAF and MC vs AAF) were matched using stabilized inverse propensity scores. RESULTS: When compared to AAF, MG-treated patients more frequently reported concerns with treatment efficacy (54% vs 4%), application (7% vs 3%), and treatment side effects. MC-treated patients more frequently reported concerns with treatment efficacy (61% vs 5%) and dryness (8% vs 5%). AAF-treated patients more frequently reported concerns with cost of treatment compared with MG (7% vs 1%) and MC (9% vs 4%). Among patients reporting concerns, level of importance associated with these concerns was similar for AAF-treated patients compared with MG- and MC-treated patients. When compared to AAF-treated patients, MG-treated patients more frequently reported side effects of dryness (26% vs 15%) and uneven skin tone (3% vs 0%), and MC-treated patients more frequently reported side effects of burning (7% vs 3%), itching (7% vs 5%), and redness (7% vs 5%). MG- and MC-treated patients indicated greater intolerance for reported side effects than AAF-treated patients. CONCLUSIONS: MG- and MC-treated patients more frequently reported treatment concerns and side effects than AAF-treated patients, and tolerability of those side effects was higher for patients treated with AAF. While treatment cost is a more frequent concern in patients treated with AAF, these patients less frequently reported concerns with treatment efficacy and reported similar or greater tolerance to side effects than patients treated with either MC or MG. J Drugs Dermatol. 2020;19(3): doi:10.36849/JDD.2020.3679.

COPD exacerbation costs in the IMPACT study: a within-trial analysis.

OBJECTIVES: Exacerbations account for the greatest proportion of costs associated with chronic obstructive pulmonary disease (COPD). Here we aimed to evaluate, from the US payer perspective, the costs associated with moderate and severe COPD exacerbation events for patients treated with fluticasone furoate/umeclidinium/vilanterol (FF/UMEC/VI) compared with FF/VI or UMEC/VI. STUDY DESIGN: This post hoc, within-trial economic analysis used data derived from the InforMing the PAthway of COPD Treatment (IMPACT) study (NCT02164513). METHODS: Treatment groups within the IMPACT trial received either triple therapy with FF/UMEC/VI (100/62.5/25 mcg) or dual therapy (FF/VI [100/25 mcg] or UMEC/VI [62.5/25 mcg]). The primary end point for this IMPACT post hoc analysis was cost differences between the treatment arms related to 1-year on-treatment combined moderate and severe COPD exacerbation events. RESULTS: The final study sample for this within-trial analysis consisted of 10,355 patients, 49% of whom experienced an on-treatment moderate or severe exacerbation during the study. The mean 1-year on-treatment cost estimate associated with combined moderate and severe exacerbations was highest with UMEC/VI and lowest with FF/UMEC/VI ($6205 vs $4913, respectively). Mean cost differences were statistically significant for all pairwise comparisons of FF/UMEC/VI with FF/VI or UMEC/VI (-$549 [95% CI, -$565 to -$533] and -$1292 [95% CI, -$1313 to -$1272], respectively; both P <.0001). CONCLUSIONS: Treatment with FF/UMEC/VI compared with FF/VI or UMEC/VI in the US healthcare system resulted in lower exacerbation-related costs for combined moderate/severe exacerbation events, as well as moderate and severe exacerbations separately.

Economic Burden of Patients Treated for Higher-Risk Myelodysplastic Syndromes (HR-MDS) in Routine Clinical Care in the United States.

BACKGROUND AND OBJECTIVE: Significant clinical burden is associated with higher-risk myelodysplastic syndromes (HR-MDS); however, the economic burden has not been fully examined. We examined cost of care and healthcare utilization (HCU) in HR-MDS patients engaged in routine care in the United States (US). METHODS: Adult US patients diagnosed with HR-MDS from 1/1/2008 to 10/31/2015 were identified from the Optum database. Patients were followed until death, progression to acute myeloid leukemia (AML), end of enrollment, or end of study (12/31/2015). Myelodysplastic syndrome (MDS)-related costs/HCU (including medical/pharmacy claims with a primary diagnosis of MDS, MDS-related treatment, or supportive care) and non-MDS-related costs/HCU were evaluated. Costs were calculated as per-patient per-month (PPPM) costs adjusted to 2015 US dollars. RESULTS: Of the 209 HR-MDS patients included, median follow-up was 9.9 months (interquartile range 4.6-17.9), and 69.4% had at least one inpatient admission, 56.9% had at least one emergency department visit, and nearly all patients had at least one outpatient visit. Average PPPM costs over follow-up were $17,361; year 1 versus year 2 costs were higher ($17,337 vs $12,976) following HR-MDS diagnosis. The majority of costs were for MDS-related medical services ($10,327 PPPM). MDS-related medical PPPM costs decreased from $10,557 (year 1) to $6530 (year 2). The main drivers of MDS-related medical costs and the decrease in year 2 were chemotherapy and supportive care costs. CONCLUSIONS: The economic burden of HR-MDS is considerable, particularly within the first year of diagnosis. Treatment/supportive care costs accounted for a significant portion of MDS-related costs. As HR-MDS treatment evolves, the economic impact and HCU need to be further investigated.

Economic burden of patients with diffuse large B-cell and follicular lymphoma treated in the USA.

AIM: Evaluate healthcare costs and utilization of treated diffuse large B-cell lymphoma (DLBCL) and follicular lymphoma (FL) patients. MATERIALS & METHODS: Adults with newly diagnosed DLBCL and FL between 1 January 2008 and 31 October 2015 were identified in the Optum™ claims database. Healthcare costs and utilization were assessed from diagnosis date until end of follow-up. RESULTS: A total of 1267 DLBCL- and 1595 FL-treated patients were identified. Mean per-patient, per-month cost during follow-up was US$11,890 for DLBCL and US$10,460 for FL. Healthcare costs and utilization decreased from year 1 to 2 following diagnosis, due to a decrease in chemotherapy services, inpatient admissions and other outpatient services. CONCLUSION: The economic burden of treated DLBCL and FL is considerable, especially in the first year following diagnosis.

Comparative evaluation of treatment patterns and healthcare utilization of newly-diagnosed rheumatoid arthritis patients by anti-cyclic citrullinated peptide antibody status.

BACKGROUND: Anti-cyclic citrullinated peptide (CCP) antibody positivity is an established diagnostic factor for severe disease activity and joint damage and a prognostic factor for aggressive disease in rheumatoid arthritis (RA). OBJECTIVE: To compare RA-related treatment, healthcare utilization, and joint erosion between anti-CCP-positive and anti-CCP-negative RA patients. METHODS: Newly-diagnosed RA patients were identified from the Henry Ford Health System database between January 1, 2009 and December 31, 2014; the date of the first RA diagnosis within the study period was the index date. Baseline anti-CCP test was used to categorize patients as anti-CCP-positive or anti-CCP-negative, and outcomes were evaluated in the 6 months post-index. RESULTS: There were 217 anti-CCP-positive and 191 anti-CCP-negative RA patients included in the study. A higher proportion of anti-CCP-positive patients were initiated on RA treatment than anti-CCP-negative patients (70.5% vs 23.0%; p < .0001). More anti-CCP-positive patients received methotrexate (73.2% vs 56.8%; p = .0374), while more anti-CCP-negative patients received hydroxychloroquine (31.8% vs 13.1%; p = .0037) in first-line therapy. A higher proportion of anti-CCP-negative patients were tested for rheumatoid factor (RF) and erythrocyte sedimentation rate (ESR). Of those tested, there were more positive test results in the anti-CCP-positive cohort compared to the anti-CCP-negative cohort (RF: 84.4% vs 18.2%, p < .0001; C-reactive protein [CRP]: 69.7% vs 48.3%, p = .0008; and ESR: 89.5% vs 53.9%, p < .0001). Outpatient utilization predominated, with more anti-CCP-positive patients having any outpatient physician office visit (96.3% vs 77.5%, p < .0001) and a higher mean number of visits (5.3 vs 2.5, p < .0001) than anti-CCP-negative patients. Among anti-CCP-positive (n = 113) and anti-CCP-negative (n = 58) patients with imaging results, more anti-CCP-positive patients had joint erosion compared to anti-CCP-negative patients (18.6% vs 8.6%; p = .0858); however, statistical significance was not reached. CONCLUSION: RA patients with positive anti-CCP antibodies had higher degrees of inflammation and disease activity as indicated by laboratory results, which likely contributed to their higher rates of healthcare utilization, joint erosion, and proportions of RA treatment.

Fall-related healthcare use and costs in neurogenic orthostatic hypotension with Parkinson's disease.

AIMS: To compare patient characteristics, rates, and costs of medically attended falls among patients with Parkinson's disease (PD) and probable PD plus neurogenic orthostatic hypotension (PD + nOH). MATERIALS AND METHODS: MarketScan Commercial and Medicare Supplemental databases (January 1, 2009-December 31, 2013) were used to identify PD and probable PD + nOH patients. The first medical or prescription claim suggesting these diagnoses served as the index date. Baseline characteristics and post-index all-cause and fall-related healthcare utilization and costs were compared between patient groups. RESULTS: A total of 17,421 PD and 281 PD + nOH patients were identified. Compared with PD patients, PD + nOH patients were older (77 vs 74 years; p < .0001) and had more comorbidities. Pre- and post-index date, more PD + nOH patients had a medically attended fall than PD patients (25% vs 20% [p = .0159] and 30% vs 21% [p = 0.0002], respectively). Fallers in both groups had similar numbers of medically attended falls 12-months pre-index (mean =1.9), but PD + nOH fallers had more falls post-index (2.5 vs 2.0; p = .0176). Compared with PD patients, more PD + nOH patients (all p < .01) had fall-related emergency department (ED) visits (18% vs 10%), hospitalizations (7% vs 3%), and non-office visit outpatient services (15% vs 10%). Adjusted total post-index medical costs for falls ($2,260 vs $1,049; p = .0002) and total all-cause costs ($31,260 vs $20,910; p < .0001) were higher for PD + nOH vs PD patients. LIMITATIONS: This study had some limitations. There is no ICD-9-CM diagnosis code for nOH, so a combination of PD and OH diagnoses (with confounding conditions excluded) served as a proxy for an nOH diagnosis. Also, the rate of falls and associated costs in these cohorts might be under-reported because only medically attended falls were evaluated. CONCLUSIONS: PD + nOH patients had a higher prevalence of pre-existing comorbidities and a higher rate of medically attended falls than those with PD alone, leading to increased costs of care.

Socioeconomic Status of Counties Where Dialysis Clinics Are Located Is an Important Factor in Comparing Dialysis Providers.

This study assessed the hypothesis that the clinic site of service socioeconomic status (SES) represents an unmeasured confounder for clinical outcome comparisons between dialysis clinics and provider types, using data from the federal pay-for-performance program for end-stage renal disease. A total of 6506 dialysis facilities were categorized by clinic SES status (rurality and poverty status). Clinics were then grouped by provider type (chain size and tax status). Lastly, performance penalties were determined by each of these classifications. Findings were that 7.4% of dialysis clinics could be classified as being in rural locations, and 20.6% could be classified as being in high-poverty locations. Large dialysis organizations served more rural (65%) and high-poverty areas (metropolitan, 69%; micropolitan, 75%; rural, 75%) compared to other providers (medium, small, hospital/university). For-profit providers accounted for a majority of dialysis clinics in rural areas (78%) and high poverty areas (metropolitan, 84%; micropolitan, 85%; rural, 90%). This study found that dialysis clinic performance penalties did vary by SES, with poorer outcomes observed for clinic locations with lower SES. This finding, along with the nonrandom distribution of provider types by SES status, suggests that clinic and provider location SES may need to be considered when comparing providers.

Medicare home health care patient case-mix before and after the Balanced Budget Act of 1997: effect on dual eligible beneficiaries.

The Balanced Budget Act (BBA) of 1997 changed the payment system for Medicare home health care (HHC) from cost-based to prospective reimbursement. We used Medical Expenditure Panel Survey data to assess the impact of the BBA on Medicare HHC patient case-mix measured by the Centers for Medicare and Medicaid Services Hierarchical Condition Categories (CMS-HCC) model. There was a significant increase in Medicare HHC patient case-mix between the pre-BBA and Prospective Payment System (PPS) periods. The increase in the standardized-predicted risk score from the Interim Payment System period to PPS was nearly 4 times greater for the dual eligibles (Medicare-Medicaid) than for the Medicare-only population. This significantly greater rise in the HHC resources required by dual eligibles as compared to nonduals could be due to a shift in HHC payers from Medicare only to Medicaid rather than be an actual increase in case-mix per se.

Comparisons of health care-associated infections identification using two mechanisms for public reporting.

BACKGROUND: Many states have or are in process of legislating hospitals to report health care-associated infections (HAI). The purpose of this article is to compare two methods currently in use by different states: 1) selected infections due to medical care Patient Safety Indicator (PSI-7); and 2) Centers for Disease and Prevention Control (CDC) protocols for central line-associated bloodstream infections (CLA-BSI). METHODS: Data came from a multihospital study. Site coordinators provided lists of elderly Medicare patients admitted in an enrolled intensive care unit in 2002 cross referenced with patient specific data on CLA-BSI following CDC protocols. PSI-7 was identified using Medicare data and the Agency for Healthcare Research and Quality PSI software version 2.1. RESULTS: The full sample comprised records from 14,637 patients from 41 intensive care units in 24 hospitals. Patients were excluded if they did not meet the PSI-7 denominator criteria. In a sample of 9,948 patients, both methods identified infections in 89 (0.89%) patients. The methods had little concordance with only 8 patients identified using both methods. CONCLUSIONS: Inconsistencies that we identified in this study are concerning given the fact that reports of HAI generated by different methods vary widely. Mandatory reporting mechanisms should be standardized and their accuracy confirmed.