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Biomedical subjects

H David Reines

Publications and source records attributed to H David Reines.

7 recordsLinked to original sources

Integrating midlevel practitioners into a teaching service.

Meeting the educational needs and requirements of surgical resident physicians while achieving optimal patient care is a challenge for program directors. Midlevel practitioners (MLPs) were employed by a large community teaching hospital to augment the surgical teaching service, to improve continuity of patient care, and to provide resident physicians with greater flexibility to participate in classroom, operative, and clinical educational experiences. The MLPs were carefully integrated into the surgical program by creating the necessary buy-in, developing positive relationships, decreasing resistance, and reinforcing acceptance when demonstrated. MLPs function at the level of junior resident physicians and are active participants in the teaching and evaluation process. Structurally, MLPs receive their assignments from and report to the chief resident physician, but are ultimately responsible to the program director. Instituting the program required providing financial justification to administration and flexibility in meeting the diverse needs of the four teams. As a result, surgical resident physicians have been sufficiently freed from service activities to be able to capitalize on learning activities that range from surgeries to conferences. MLPs can be integrated into a surgical teaching program and become a positive force in the education of resident physicians.

Education, Professional↗

Patient safety: latex allergy.

Reactions to latex rubber products are a growing problem. The danger of latex allergy has been noted for many years, but it has gained significantly more attention since the institution of so-called"universal precautions" following the identification of AIDS and other transmitted viral diseases. Recognition of the various latex reactions ranging from contact dermatitis to true latex allergy is required to prevent unnecessary morbidity and mortality among health-care workers and patients. Several approaches to the problem of latex allergy are reviewed and guidelines for minimizing exposure are recommended.

Female↗

Predictors of nonalcoholic steatohepatitis and advanced fibrosis in morbidly obese patients.

BACKGROUND: Nonalcoholic fatty liver disease (NAFLD) is a common form of chronic liver disease in the United States. It is commonly associated with the components of the metabolic syndrome including obesity. From the spectrum of NAFLD, only patients with nonalcoholic steatohepatitis (NASH) have been convincingly shown to have a potential for progression to cirrhosis. We report the prevalence of NAFLD and NASH as well as predictors of NASH and advanced fibrosis in morbidly obese patients. METHODS: 212 consecutive patients who underwent bariatric surgery were enrolled in the study. A liver biopsy was performed at the time of the surgery. Causes of chronic liver disease other than NAFLD were excluded by clinical and laboratory evaluation. RESULTS: The prevalence of NAFLD was 93%. Of those with NAFLD, 26% had NASH. 17 patients (9%) had advanced fibrosis (i.e., bridging fibrosis or cirrhosis). Male gender, AST, and type 2 diabetes mellitus were independently associated with NASH. Waistto-hip ratio, AST, and focal hepatocyte necrosis on liver biopsy were independently associated with advanced fibrosis. Interestingly, while AST was associated with NASH and advanced fibrosis, the majority of the patients with either NASH or advanced fibrosis had normal AST. CONCLUSIONS: NAFLD and NASH are very common in morbidly obese patients undergoing bariatric surgery. Features associated with the metabolic syndrome and liver cell injury are independently associated with either NASH or advanced fibrosis.

Adult↗

Clinical review: hemorrhagic shock.

This review addresses the pathophysiology and treatment of hemorrhagic shock - a condition produced by rapid and significant loss of intravascular volume, which may lead sequentially to hemodynamic instability, decreases in oxygen delivery, decreased tissue perfusion, cellular hypoxia, organ damage, and death. Hemorrhagic shock can be rapidly fatal. The primary goals are to stop the bleeding and to restore circulating blood volume. Resuscitation may well depend on the estimated severity of hemorrhage. It now appears that patients with moderate hypotension from bleeding may benefit by delaying massive fluid resuscitation until they reach a definitive care facility. On the other hand, the use of intravenous fluids, crystalloids or colloids, and blood products can be life saving in those patients who are in severe hemorrhagic shock. The optimal method of resuscitation has not been clearly established. A hemoglobin level of 7-8 g/dl appears to be an appropriate threshold for transfusion in critically ill patients with no evidence of tissue hypoxia. However, maintaining a higher hemoglobin level of 10 g/dl is a reasonable goal in actively bleeding patients, the elderly, or individuals who are at risk for myocardial infarction. Moreover, hemoglobin concentration should not be the only therapeutic guide in actively bleeding patients. Instead, therapy should be aimed at restoring intravascular volume and adequate hemodynamic parameters.

Blood Transfusion↗

Monitoring oxygen transport and tissue oxygenation.

PURPOSE OF REVIEW: To review recent publications in the field of oxygen delivery and tissue oxygenation. With few exceptions, we restricted our selection to clinical studies published in the English literature. RECENT FINDINGS: No major breakthroughs have occurred in the past decade in the diagnosis or treatment of tissue hypoxia. There is renewed interest in goal-directed resuscitation when applied early in the course of treatment. Monitoring metabolic markers of tissue hypoxia continues to hold great clinical interest, in particular, tissue PCO2, near infrared spectroscopy, base deficit and blood lactate concentration. Technical issues, however, seem to restrict the widespread use of many of these techniques. SUMMARY: There is an urgent need to develop methods to accurately and rapidly identify patients with tissue hypoxia. Perhaps the combination of gastric tonometry, near-infrared spectroscopy, urinary PO2 and continuous measures of mixed (or central) venous O2 saturation may provide the answer. An even more formidable task is that of developing effective therapy to correct tissue hypoxia while avoiding harm to the patient.

Journal Article↗

The impact of technology on the analgesic gap and quality of acute pain management.

National surveys continue to document the undertreatment of acute postoperative pain, despite the availability of evidence-based, clinical practice guidelines and the Joint Commission on Accreditation of Healthcare Organizations standards. This article surveys factors that contribute to persistent gaps during the acute pain management process, including deficiencies in providing continuous analgesia, disparities in access to medical care, the acute pain medicine culture itself, a lack of adequate pain assessment, health care provider biases, and limited health care resources. The role of technology in increasing patients' control over their own pain management and narrowing these gaps is discussed. Patient-controlled analgesia delivery systems are an example of such technology, and they play a key role in improving the quality of acute pain management and increasing the patient's involvement in this process. However, the use of these systems may be limited because of the amount of health care resources necessary for their administration and limitations in payment for professional services. Therefore, there exists a need for additional technologies that will simplify the pain management process and reduce the amount of health care resources necessary to provide patients with quality acute pain management.

Acute Disease↗