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R P Nenner

Publications and source records attributed to R P Nenner.

18 recordsLinked to original sources
PubMed1999

Concurrent improvements in ambulatory cardiac catheterization practices following inpatient interventions.

Questions have been increasingly raised about the value of performing right heart catheterization. A preliminary analysis done in 1992 revealed significant interhospital variation in the frequency of the procedure among Medicare Part A and Medicaid patients in New York State, and it also suggested that the procedure was being performed routinely in some hospitals. In 1993, IPRO initiated a cooperative health care quality improvement program involving the state's 53 catheterization laboratories. As a result of this educational intervention, the rate of bilateral catheterization among Medicare Part A patients fell from 89/100,000 beneficiaries in 1992 to 65/100,000 in 1996, and the overall percentage of catheterized Medicare patients undergoing bilateral catheterization fell from 30.5% in 1992 to 17.4%. A major question was whether a corresponding decrease had occurred among ambulatory patients (Medicare Part B). To determine the answer, the Medicare Part B database was analyzed for the identical period of time. It was found that the percentage of ambulatory Medicare patients who underwent bilateral catheterization at the 53 laboratories fell from 37.6% in 1992 to 17.0% in 1996, paralleling the decline observed among inpatients. The results of this quality improvement study show that an educational intervention directed at inpatient practice patterns can have a similar impact on outpatient patterns.

Ambulatory Surgical Procedures↗
PubMed1999

Laparoscopic and open cholecystectomy in New York State: mortality, complications, and choice of procedure.

BACKGROUND: With the advent of laparoscopic cholecystectomy patient outcomes and choice of procedure (laparoscopic vs open) are of vital interest. The purpose of this study was to examine the mortality and complication rates for patients undergoing laparoscopic and open cholecystectomy in New York State and to test for differences among hospital peer groups and regions of the state in the tendency to use the laparoscopic approach. METHODS: A population-based, retrospective cohort study of laparoscopic and open cholecystectomy was conducted in which data were analyzed on all 30,968 patients who underwent cholecystectomy as a principal procedure in New York State in 1996. RESULTS: A total of 78.7% of the 30,968 patients who underwent cholecystectomy as a principal procedure in New York State in 1996 underwent laparoscopic cholecystectomy. The mortality rate was lower for laparoscopic cholecystectomy than for the open procedure (0.23% vs 1.90%, P < .0001) and remained significantly lower after patient characteristics related to patient survival (odds ratio 0.34, P < .0001) were controlled for. The prevalence rate of the 8 most common complications among cholecystectomy patients was also much lower among patients undergoing laparoscopic cholecystectomy. Patients undergoing cholecystectomy in public hospitals, Bronx County, and Kings County were found to be significantly less likely to have laparoscopic procedures, and patients undergoing cholecystectomy on Long Island were found to be significantly more likely to have laparoscopic procedures than were other patients in the state. CONCLUSIONS: There are reasonably large differences among hospitals, hospital groups, and regions of the state in the type of cholecystectomy used, even after adjustment for differences in patient comorbidities and indications for type of procedure.

Adult↗
PubMed1998

Impact of an educational program on bilateral heart catheterization practice patterns.

The value and necessity of performing right heart catheterizations for coronary artery disease have been increasingly questioned. Preliminary analyses of the procedure among Medicare and Medicaid patients in New York State revealed significant inter-hospital variations in the frequencies with which such catheterizations were performed. These data suggested that right heart catheterizations (RHC) were being performed routinely. Medicare and Medicaid claims data for bilateral catheterizations were analyzed before and after an educational intervention program involving the state's 53 catheterization laboratories. The educational intervention was multifaceted and consisted of disseminating suggested guidelines established with the assistance of the New York State Chapter of the American College of Cardiology, the Committee on Cardiovascular Disease of the Medical Society of the State of New York, and the Cardiac Advisory Council of the New York State Department of Health. Posteducational intervention assessments were made over a 4-year period. The baseline data for 1992 demonstrated that 10 (18.4%) laboratories had performed RHC routinely (70-100%) on Medicare and Medicaid patients undergoing catheterization. In contrast, 34 (64.2%) laboratories performed RHC in less than 20% of their Medicare cases, whereas 39 (73.5%) did so among Medicaid cases. Eighteen (34%) laboratories performed RHC in less than 10% of Medicare cases. These data indicated that there was significant inter-hospital variation in the frequency with which RHC was performed. Beginning in 1993, ongoing educational meetings and conferences were held with all laboratories, but especially with the 10 that were at the high end of the RHC performance level. As a result of this ongoing intervention, the rate of RHC among Medicare patients fell from 89/100,000 in 1992 to 65/100,000 beneficiaries in 1996. From another perspective, the percentage of catheterized Medicare patients undergoing RHC fell from 30.5% in 1992 to 17.4% in 1996. The decline among the 10 laboratories was even more dramatic; the percentage of catheterized Medicare patients undergoing RHC fell from 89.1% in 1992 to 31.6% in 1996. The parallel drop for Medicaid patients over the same time period was from 92.8 to 32.7%. The results of the study indicate that many previously performed RHC in patients with coronary artery disease were routine and not medically indicated. The dramatic decreases in RHC documented in this study over a 4-year period demonstrate the success of quality improvement efforts jointly undertaken by providers and a peer review organization.

Age Distribution↗
PubMed1998

Radical prostatectomy specimens among Medicare patients in New York State: a review of pathologists' reports.

CONTEXT: Gross and microscopic pathologic examinations of radical prostatectomy specimens should result in reports that contain comprehensive information. Such information is important for facilitating adjuvant therapy decisions, assessing treatment interventions, providing patients and their families with estimates of prognosis, and in analyzing clinical outcomes. An important element of the information in radical prostatectomy specimen reports is the tumor status of margins, which is essential for staging. OBJECTIVES: The purposes of this study were to analyze the gross and microscopic examinations documented in a sample of radical prostatectomy reports and, by doing so, to determine the comprehensiveness of these reports. METHODS: The pathology reports from 414 charts of male Medicare patients aged 70 years and older who underwent radical prostatectomy in the 3-year period between 1991 and 1993 in New York State were examined. This group included all patients 75 years and older and a random sample of the 1266 patients aged 70 to 74 years who had undergone the procedure during the 3-year time frame. A protocol was used for recording general information from each pathology report as well as data relevant to gross and microscopic examinations. RESULTS: The results of this study demonstrated an absence of uniformity in reporting protocols, as well as documentation problems in those protocols used. Important information concerning both the gross and microscopic examinations was frequently absent. An important finding of the study was the high level (94.9%) of reporting on the microscopic status of prostate gland margins, which permitted an accurate assessment of margin positivity. Among those cases for which margin status was reported, 54% were found to be tumor positive. This is a significant finding in that it has implications for TNM staging. Such patients have an increased risk of disease progression and have been shown to have the same 5-year mortality rate as patients who have not been treated surgically. CONCLUSIONS: The study demonstrated a lack of uniformity in the pathology protocols used to describe radical prostatectomy specimens and the frequent absence of important gross and microscopic information. The results of this study also demonstrated a high rate (54%) of margin positivity among elderly men undergoing radical prostatectomy. Based on the results of this study, there is a need for closer attention to the issue of margin positivity. There is also a need for considering the usefulness of standardized reporting that includes elements with proven, putative, or prognostic value.

Adenocarcinoma↗
PubMed1996

The effects of regionalization on clinical outcomes for a high risk surgical procedure: a study of the Whipple procedure in New York State.

The purpose of this study was to analyze the effects on clinical outcomes of regionalization for a high risk surgical procedure, pancreaticoduodenectomy (the Whipple procedure). Claims data were examined for all Medicare patients undergoing the procedure in New York State for the 4-year period 1991-1994. Outcomes were analyzed for two regional hospitals and for 115 other hospitals that performed the procedure. In-hospital mortality and length of stay were significantly less at the two high volume regional hospitals when compared with the remaining low volume hospitals. In-hospital mortality rates at all hospitals generally decreased as the number of procedures increased. The results of this study demonstrate that there is significant value in regionalization for even relatively lower volume high risk surgical procedures.

Aged↗
PubMed1996

Trends in radical prostatectomy in New York State.

The purpose of this study was to examine trends in radical prostatectomy in New York State for the period 1991-1993. A retrospective analysis was conducted of all radical prostatectomies performed on hospitalized male Medicare beneficiaries in New York State for the period 1991-1993. Basic trend data were also analyzed for 1990. Pattern analysis was conducted on the 4,154 procedures performed between 1990-1993. In depth hospital chart review was conducted of the 220 cases of radical prostatectomy performed in patients 75 years of age and over between 1991 and 1993 and of a random sample of 263 of 1,266 patients 70-74 years of age. A total of 452 hospital charts were examined for a broad range of information, including family history and therapeutic preferences, preoperative work-up, staging, intraoperative and postoperative transfusions, postoperative complications, and mortality. The rate of radical prostatectomy dramatically rose among New York State male Medicare beneficiaries between 1990 and 1992 and remained at a high plateau in 1993. Pattern analysis revealed a tripling of the procedure rate among those 70-74 years of age and a doubling of the rate in those 75 years of age and older. It was also found that a high proportion of radical prostatectomies in men 70 years of age and older were performed by relatively few hospitals. Although rates of radical prostatectomy rose in New York State during the period under study, these rates were lower than those reported several years earlier in other parts of the country. This may reflect an overall conservative approach to the management of prostate cancer, especially among older men, on the part of New York's urologic community. The overall postoperative complication rate was 18.5% and the mortality rate 1.3%. These rates are similar to those found in other series. Prostate cancer in older men usually has a protracted course. Radical prostatectomy in such men is associated with operative risks, and significant immediate and long-term complications. In addition, the procedure provides only marginal benefit of 10 years because of competing mortality in older men. The results of this study show a need for provider and patient focused educational efforts to reduce the numbers of radical prostatectomies in older men where the benefits are marginal compared to operative risks and significant immediate and long term complications.

Aged↗
PubMed1996

Radical prostatectomy: lower rates among African-American men.

This study compares radical prostatectomy rates by race among male Medicare patients in New York. A retrospective analysis was conducted of all radical prostatectomies performed on hospitalized male Medicare beneficiaries for the period 1991 through 1993. Basic trend data also were analyzed for 1990. Pattern analysis was conducted on the 4154 procedures performed between 1990 and 1993. The rate of radical prostatectomy rose dramatically during the 3-year period from 1990 to 1992 among New York's 1.1 million male Medicare beneficiaries. The rates rose for both African Americans and whites. However, the annual rates of radical prostatectomy for African Americans were significantly below those for whites. Lower rates of radical prostatectomies were observed for African Americans in all age groups except the < 65-year-old group. However, the total number of radical prostatectomies in this age group were small in number. An important finding was the lower annual rates of radical prostatectomy for African Americans in the 65- to 69-year-old age group. During the period under study, prostate cancer among Medicare patients in New York rose by 33.8% for African Americans and 26.5% for whites. Significantly, local disease was found at the time of diagnosis in 70% of whites but in only 55% of African Americans. These data reflect later stage at diagnosis among African-American males. These results indicate that despite higher national rates for prostate cancer, male African-American Medicare patients in New York have reduced access to radical prostatectomy as a treatment modality. This is especially of importance in the < 70-year-old group in whom most authorities consider the procedure appropriate. The reasons for this reduced access are discussed as are the measures needed to remedy the underlying inequities in health care.

Black or African American↗
PubMed1995

IPRO's Health Care Quality Improvement Program.

IPRO is a peer-review organization in New York State that functions under a contract with the Health Care Financing Administration (HCFA) of the U.S. Department of Health and Human Services for assuring quality of care for Medicare patients. In 1993, IPRO initiated its Health Care Quality Improvement Program (HCQIP). The purpose of this program is to develop information on patterns of care and outcomes, to share this with health care providers, and in so doing effect measurable improvements in care and outcomes. In order to achieve improvements in the quality of care, IPRO has initiated a series of cooperative projects which combine pattern analysis and feedback. These cooperative projects cover a broad range of medical care issues and areas. They have demonstrated that IPRO, providers, and physicians can collaborate to establish and implement efforts to achieve the ultimate goal of improved quality of care for Medicare beneficiaries.

Aged↗
PubMed1994

The learning curve.

Explore the source record for details and available documents.

Cholecystectomy, Laparoscopic↗
PubMed1994

Increased cholecystectomy rates among Medicare patients after the introduction of laparoscopic cholecystectomy.

A study was undertaken of Medicare claims coded for cholecystectomy and those coded for laparoscopic cholecystectomy for the four year period 1990-1993 in New York State. During this time period there was a 28.12% increase in total cholecystectomies performed and an increase in the proportion of laparoscopic cholecystectomies from 15.86% to 50.0%. The increase in total cholecystectomies appears to be driven by a dramatic increase in laparoscopic procedures. Possible reasons for this increase include the performance of laparoscopy on patients previously assessed as too risky to undergo the conventional procedure, laparoscopy on mildly symptomatic patients who had previously put off a perceived higher risk open procedure and a possible broadening of indications for gallbladder surgery. The dramatic increase in the numbers of cholecystectomies performed in the early 1990s may be due in part to procedures performed on a large pool of procrastinating mildly symptomatic patients. If this is the case, then these increased rates should decline to baseline levels as soon as this pool of patients is exhausted. However, if surgeons are performing laparoscopy on asymptomatic patients with gallstones, then these rates may well be sustained. Such a broadening of indications for gallbladder surgery is of concern to many and has prompted the issuance of guidelines concerning the treatment of gallstones. Any broadening of indications for gallbladder surgery also has significant implications for health care costs and the use of health care resources.

Aged↗
PubMed1994

Quality of care problems among Medicare and Medicaid patients.

The purpose of this study was to characterize quality of care problems among Medicare and Medicaid inpatients in New York State. The patients selected for this study comprised 1991 and 1992 Medicare and all 1992 Medicaid inpatients in whom quality of care problems with actual or potential adverse effects were found. The patients in this study were drawn from public, proprietary, voluntary and teaching hospitals. A total of 1000 quality of care problems with either actual or potential adverse effects were found in 706 Medicare patients. Two hundred and seventy-five (275) quality of care problems with actual or potential adverse effects were found in 154 Medicaid patients. Premature death occurred in 53 (7.4%) of the 706 Medicare and in 42 (27.2%) of the 154 Medicaid patients. Treatment problems and monitoring failures accounted for the majority of quality of care problems with actual or potential adverse effects for both Medicare (63.0%) and Medicaid (75.7%) patients. Among Medicare patients, the treatment of infections and antibiotic use, fluid and electrolyte management, and inappropriate drug use were among the leading causes of quality of care problems. Attending physicians were associated with the majority of Medicare quality of care problems while house staff and attending physicians were associated with the majority of those among Medicaid patients. The results of this study indicate that there are several leading causes of quality of care problems among Medicare and Medicaid patients. Treatment problems and monitoring failures together comprise the majority of such problems. Among Medicare patients, it was found that most quality of care problems were associated with the treatment of infections and antibiotic use, fluid and electrolyte management, and inappropriate drug use. Most quality of care problems among Medicaid patients were associated with these categories as well as with labor and delivery problems, and poor discharge planning. The results of this study reflect the peer-review process in which providers are given an opportunity to respond to physician-reviewer decisions about the presence of actual or potential adverse effects. Such a process, which permits the presentation of additional data and information by providers, produces fewer final adverse outcome determinations than a process uniquely based on chart review. The quality of care problems observed in this study are amenable to focused educational interventions. Such remedial interventions could yield significant improvements in the quality of care for all patients.

Aged↗
PubMed1993

Hospital reported complications of laparoscopic cholecystectomy among Medicare and Medicaid patients.

The purpose of this study was to initiate a hospital-based case review of all laparoscopic cholecystectomies performed on Medicare and Medicaid patients in New York State in 1991 where there were one or more complications. Another purpose was to facilitate efforts by hospitals to monitor the performance of laparoscopic cholecystectomy through an educational process of data-sharing. There were 2,940 Medicare and 1,108 Medicaid cholecystectomies in New York State in 1991. Of these, 351 (11.9%) Medicare and 107 (9.7%) Medicaid patients were reported as having complications. The complication rate for Medicare patients was slightly lower than that observed (15.8%) in an epidemiologic study of Medicare patients in New York State who underwent laparoscopic cholecystectomy during the period January 1, 1990-June 30, 1991. Both of these observed rates for Medicare patients are higher than the mean 6.0% complication rate reported for open cholecystectomy in the literature. These increased rates may in part be due to age related risk factors present among Medicare patients. The absence of age related risk factors may also largely account for the lower laparoscopic cholecystectomy complication rate (9.7%) observed among Medicaid patients. The complication rate of 9.7% for Medicaid patients is similar to rates reported in other recent studies. The 11.9% complication rate for Medicare patients is higher than that reported in other recent studies. However, careful patient selection, the absence of age related risk factors, and greater surgical experience may account for the lower complication rates reported in some published series. Overall, the coding of complications was found to be accurate. The coding of laparoscopic cholecystectomy was found to be slightly flawed.(ABSTRACT TRUNCATED AT 250 WORDS)

Abstracting and Indexing↗
PubMed1993

Quality of care problems among Medicare patients in New York State.

The Island Peer Review Organization is the peer review organization in New York State and is under contract with the Health Care Financing Administration to monitor the quality of care rendered to Medicare patients. A severity level III is assigned when a confirmed quality problem with significant adverse effects for the patient is confirmed. A severity level II is assigned when a confirmed quality problem with the potential for significant adverse effects on the patient is found. The purpose of this study was to retrospectively analyze all 85 severity level III citations and a 12% (223) random sample of the 1,880 severity level II citations for 1991. Another objective was to characterize the providers involved in each of these two levels of quality of care problems. Among the 85 severity level III citations, 34 (40.0%) involved premature death and 33 (38.8%) readmission. Treatment (45.0%), diagnostic (16.9%), and monitoring (16.4%) problems accounted for 78.3% of the 189 problems identified in severity level III citations. The leading problem areas were the treatment of infections and the use of antibiotics (21.2%), fluid and electrolyte management (21.2%), drug use (9.4%), the use of endotracheal tubes (5.9%), the management of diabetes mellitus (5.9%), and the management of hematologic disorders (5.9%). Attending physicians (65.9%), nursing departments (16.5%), and resident physicians (7.1%) were involved in the vast majority (89.5%) of severity level III citations. Treatment problems comprised 60.5% of the 243 problems found in severity level II citations, followed by inadequate work-up (20.2%), and incomplete documentation (12.3%).(ABSTRACT TRUNCATED AT 250 WORDS)

Health Services Misuse↗
PubMed1992

Complications of laparoscopic cholecystectomy in a geriatric population group.

The purpose of this study was to assess the complications of laparoscopic cholecystectomy among geriatric patients in New York State who receive their medical care under the Federal Medicare Program. A 20% random sample survey (304 patients) of the 1,520 patients who underwent laparoscopic cholecystectomy between January 1, 1990, and June 30, 1991, was selected. Coded ICD-9 diagnoses and procedures were carefully reviewed for these patients. In some patients with complications, the medical charts were reviewed by a medical epidemiologist and a surgeon to more fully elucidate the reported complications. The patients in this study were randomly selected from public, proprietary, voluntary, and teaching hospitals. Seventy-two complications (23.68% of the 304 patients) were identified in 48 patients (15.78% of the 304 patients). Of these complications, 27 (8.88%) were surgical, and 43 (14.14%) were medical in character. There were two deaths (0.66% of the 304 patients). Individual chart review of 32 of the 48 cases with complications revealed physician-related surgical quality-of-care problems which directly contributed to complications in 10 patients (31.25%). The overall complication rate of 23.68% found in this study represents one of the highest so far reported among published studies of laparoscopic cholecystectomy. The results of this study indicate a significant level of morbidity when laparoscopic cholecystectomy is performed on a geriatric population group. Although age-associated risk factors contributed to this high complication rate, so too did errors of surgical judgment and technique.(ABSTRACT TRUNCATED AT 250 WORDS)

Aged↗
PubMed1992

Serious complications of laparoscopic cholecystectomy in New York State.

Serious surgical complications following laparoscopic cholecystectomy are described in a series of 17 patients who underwent the procedure in New York State in 1990 and 1991. Among the 17 cases, the most frequent complication (41.1%) was laceration of the common bile duct and/or right hepatic duct. Other serious surgical complications included perforation or laceration of the small bowel, laceration or injury of an intrahepatic bile duct, and post-operative bleeding. Some of the serious complications described here, such as laceration of the aorta and iatrogenic resection of portions of the extrahepatic biliary tree, have not been previously described. The results of this study point out the need for carefully designed retrospective and prospective studies to assess the prevalence of complications from this procedure.

Adult↗