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Biomedical subjects

L B Stack

Publications and source records attributed to L B Stack.

7 recordsLinked to original sources

Emergency medicine in Ukraine: challenges in the post-Soviet era.

The practice of emergency medicine in Ukraine is markedly different from the practice in North America. The emergency physician counterpart in Ukraine attends 6 years of medical school then 18 months of prehospital physician training at an EMS base station. Once trained, prehospital physicians work 160 hours/month in 24-hour shifts at the base station as part of a physician-nurse team which answers ambulance requests. Most patients are seen and treated on site of the ambulance call. Patients are transported to the hospital only 20% of the time. Prehospital physicians can expect to earn $35 to $65 per month. Nearly all prehospital physicians are government employees. Since becoming an independent democratic republic, Ukraine's turbulent economy has negatively affected health care. Deaths from infectious diseases, including vaccine-preventable illnesses are 10-fold to that of Western countries. A 90% income tax discourages the private practice of medicine. Medical care is provided free of charge, however, if a patient wants a higher standard of care, they may have to pay an attending physician up to $200. Most medications used to treat emergencies are free, but if thrombolytics are required, the patient will have to pay for them before they are administered. Budgetary constraints limit equipment and technology. The disparity between urban and rural resources is striking as even the most basic equipment is antiquated and in need of repair. Despite the economic challenges facing Ukranian physicians, they are enthusiastic about the care and services they provide. EMS is well organized and offers services not seen in the United States. Prehospital physicians in Ukraine are viewed as an integral part of the health care system by their hospital-based colleagues.

Education, Medical↗

Foreign bodies in the gastrointestinal tract.

Management of foreign bodies of the gastrointestinal tract is not standardized among the various specialties and subspecialties of physicians who care for these patients. This article gives a true emergency department approach to the patient with an ingested or inserted gastrointestinal foreign body. Evaluation and management of the foreign body by location are presented. Controversial issues such as Foley catheter removal of esophageal foreign bodies, management of sharp objects in the stomach, and management of body packers and body stuffers are discussed. Examples of foreign bodies encountered by the typical emergency physician are demonstrated.

Catheterization↗

Acute bilateral blindness.

Acute bilateral blindness is an emergent condition that may signal life-threatening disease. This article details an emergency medicine approach to the patient with acute bilateral blindness, and reports a case of an elderly woman whose sole presenting complaint was acute loss of vision. She was ultimately diagnosed as having pulmonary embolism. The approach focuses on identification of life-threatening disease processes, while differentiating between ocular, psychogenic, and cortical etiologies.

Acute Disease↗

Advances in the use of ancillary diagnostic testing in the emergency department evaluation of chest pain.

This article discusses the advances of ancillary studies used to evaluate the emergency department patient with chest pain caused by acute myocardial infarction (AMI) or ischemia. This article examines how these studies have improved the early detection of patients with AMI, improved differentiation of acute ischemic coronary events from nonischemic causes of chest pain, more accurately stratified patients for adverse outcome, and decreased the number of patients with AMI inadvertently discharged from the emergency department. Ancillary studies discussed include nonstandard ECGs, nuclear imaging, serum markers, and emergency department observation units. Emergency department echocardiography is discussed elsewhere in the issue.

Chest Pain↗

Efficacy of military antishock trousers in compensatory and decompensatory hemorrhagic hypotension.

The compensatory cardiovascular response to hemorrhage includes a baroreceptor-induced activation of the sympathetic nervous system resulting in an attempt to reestablish MAP through peripheral vasoconstriction. If the hypotension is not reversed this compensatory vasoconstriction will progress to a loss of vascular tone known as vascular decompensation. The primary purpose of the present study was to compare the effectiveness of military antishock trousers (MAST) applied during the compensatory and decompensatory stages of hemorrhagic hypotension. MAST pressures of 30, 50, 70, and 90 mm Hg were applied during control, compensation, and decompensation. The results showed that MAST pressures up to 90 mm Hg were ineffective at raising mean arterial blood pressure (MAP) when applied to normotensive dogs; MAP increased 62% when MAST were applied during compensation as the result of a significant augmentation of cardiac output (stroke volume and heart rate) with no change in TPR; and a modest increase in MAP from 40 to 55 mm Hg occurred when MAST pressure was increased to 70 mm Hg during decompensation, which was accounted for entirely on the basis of an increased total peripheral resistance with no significant change in CO.

Animals↗

An approach to emergency department photography.

In the emergency department, photography requires an expedient, portable, adaptable, and relatively simple camera system to take advantage of fleeting opportunities for recording visually educational material. These prerequisites are different from those for traditional medical photography, for which relatively plentiful time and advanced equipment are routinely available. Medical photography departments provide an invaluable service, but are rarely convenient for immediate or spontaneous emergency department photographs. Although no single system or technique is optimal in all these areas, the authors find certain components and approaches work well. They review photographic equipment, paying attention to speed, ease of use, and quality of output. They also review simple techniques such as film choice, lighting, close-up photography, standardization, copy work, and radiographs. Attention to these details can help the inexperienced photographer obtain a system and begin to enjoy the rewards of effective photography in the emergency department.

Emergency Medicine↗