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Rural motor vehicle crash mortality: the role of crash severity and medical resources.

We did a retrospective case control study to examine the relationship between the risk of dying for Michigan motor vehicle crash (MVC) drivers and the type of county (rural/nonrural) of crash occurrence, while adjusting for crash characteristics, age, sex, and the medical resources in the county of crash occurrence. The 1987 Michigan Accident Census was used to obtain data regarding all MVC driver nonsurvivors (733) and a random sample of all surviving drivers (2,483). County of crash occurrence was defined as rural or nonrural. The crash characteristics analyzed were vehicle deformity, seat belt use, and drivability of the vehicle from the scene. Age and sex of the driver were also analyzed. Medical resource characteristics for the county of crash occurrence were measured as the number of resources per square mile for each of the following: ambulances, emergency medical technicians (EMT), acute care hospital beds, and operating rooms, surgeons and emergency physicians. Also considered were the number and level of emergency rooms in the county of crash occurrence along with the maximum level of prehospital care available (basic life support versus advanced life support) in a county. Before adjusting, the relative risk (RR) for rural MVC drivers dying, compared to their nonrural counterparts, was 1.96. Adjustment for crash characteristics, age, and sex (using logistic regression) decreased the RR to 1.51. An attempt to add medical resource variables to the model resulted in high correlation with the rural/nonrural variable, as well as with each other. This multi-collinearity prevented us from providing a simple explanation of the role of medical resource variables as predictors of survival.(ABSTRACT TRUNCATED AT 250 WORDS)

Accidents, Traffic↗

The interventional neuroradiology suite as an operating room.

The evolution of new neurointerventional techniques, along with improved imaging and catheter developments, has changed the interventional suite into a subspecialized operating room. This article discusses this operating room as a combination of neuroanesthesia, neuromonitoring, nursing, and technician support coordinated by the neruointerventionalist. The coordination of elective and emergent intervention is also discussed, from conception to completion of the plan, including arteriovenous emoblization, endovascular aneurysm obliteration, intra-arterial thrombolysis, extracranial and intracranial carotid angioplasty, and stenting. Specific examples are illustrated, including pharmacologic intervention complementing these techniques.

Cerebrovascular Disorders↗

Complications of endotracheal intubation.

Tracheal intubation for airway control, once done only by anesthesiologists during surgical procedures, is now being done by physicians in other specialties and by nurses, technicians, and paramedics in areas other than the operating room. Intubation, however, does not always assure a patent airway. Unrecognized esophageal placement of endotracheal tubes is the major cause of cardiac arrest and brain damage associated with intubation. Though auscultation for breath sounds is the universally accepted method of verifying proper tube placement, recent studies indicate that it is reliable only approximately two thirds of the time in situations in which verification of proper placement is needed most and is least obvious. The usefulness of this technique merits reassessment. Identification of carbon dioxide in end-expired air is the most reliable method for verification, but instruments to detect carbon dioxide are usually immediately available only in special care and surgical suites. Mouth-to-tube insufflation with a two-way disposable microbial filter differentiates immediately between esophageal and tracheal placement and can be used in any area. Malpositioned and malfunctioning tubes cause partial or complete obstruction accompanied by varying degrees of hypoxemia and hypercapnia. Respiratory and circulatory derangements and brain damage ensue if the problem is not promptly recognized and corrected. We discuss the most common causes of tube malfunction.

Airway Obstruction↗

Fetal death and work in pregnancy.

The relation between spontaneous abortion (n = 5010), stillbirth without congenital defect (n = 210), and working conditions was analysed in 22,613 previous pregnancies of 56,067 women interviewed, 1982-4, immediately after termination of their most recent (current) pregnancy. The 22,613 previous pregnancies were those in which at time of conception the women were employed 30 or more hours a week. Ratios of observed (O) to expected (E) fetal deaths after allowance by logistic regression for seven non-occupational confounding variables were calculated at four stages of pregnancy in 60 occupational groups and six main sectors for women whose work entailed various physical demands, environmental conditions, and exposure to chemicals. The O/E ratios for abortion were raised in the sales sector (1.13, p less than 0.05) and services sector (1.11, p less than 0.01) and for stillbirth in the sales sector (1.50, p less than 0.1). Substantially increased O/E ratios for late but not early abortion were found in operating room nurses (2.92, p less than 0.05), radiology technicians (3.82, p less than 0.01), and employees in agriculture and horticulture (2.40, p less than 0.05); in all categories the O/E ratio for stillbirth were also raised but only significantly (5.55, p less than 0.01) in the latter group. The O/E ratio for stillbirth was also raised in leather manufacture (3.09, p less than 0.01). In both individual and grouped analysis (the latter undertaken to minimise the possible effect of recall bias) significantly increased O/E ratios for abortion were found in women exposed to various high levels of physical stress, particularly weight lifting, other physical effort, and standing (p less than 0.01). Increased ratios for stillbirth at this level of significance (p less than 0.01) were found for other physical effort and vibration. Noteworthy chemical exposure was identified only in the health, services, and manufacturing sectors; the O/E ratio for stillbirth approached two in women exposed to solvents, almost all in manufacturing (p less than 0.01). In the latter sector exposed to solvents was also associated with an approximately 20% increase in abortion ratio at similar probability level.

Abortion, Spontaneous↗

Cost containment via expense rationalization in open-heart surgery.

Hospital costs and the fees of the surgeon, assistant, anesthesiologist, and cardiologist were reviewed in a community hospital doing 425 cardiac operations in the year 1977. Each item of the bill was analyzed and discussed with each department of the hospital. Changes made in the routine saved approximately $1000 per patient--16% for patients having mitral valves replacement (MVR), 15% for those having aortic valve replacement (AVR), 21% for those having saphenous vein bypass grafts (SVBG), and 23% for pediatric cases. The areas most likely to yield economic reductions without alteration of the quality of care are operating room, patient room, respiratory therapy, and pharmacy. Making the nurses, scrub technicians, surgical assistants, residents, and staff surgeons aware of the cost of each item and periodically discussing the alternatives could yield surprisingly large savings.

Adult↗

Imaging equipment and techniques for optimal intraoperative imaging during endovascular interventions.

Because endovascular procedures represent an ever-increasing portion of many vascular surgery practices, many surgeons are faced with difficult choices. Endovascular procedures often require open surgery, and open surgical techniques increasingly require fluoroscopic imaging. Without good intraoperative imaging, endovascular procedures are difficult and endovascular aneurysm repair is impossible. How does one balance the need for optimal imaging without sacrificing the ability to safely perform open surgical procedures, especially in the early stages of a developing endovascular program? Strategies include the use of a portable c-arm and carbon fiber table in the operating room (OR), adding a fixed imaging platform to an OR, gaining access to an angiography suite that does not meet OR requirements, and modifying it into an interventional suite that does meet operating room standards. Once the optimal equipment and facilities have been chosen, other choices must be considered. Should a radiology technician be hired? Should an interventional radiologist be available to assist or be incorporated as a routine member of the team? How will typical operating room procedures and technique need to be altered in an effort to optimize intraoperative imaging for endovascular procedures? This article gives an overview of the many issues that arise as a vascular surgery practice evolves to incorporate complex endovascular procedures.

Angiography↗

[Incidence of inappropriate cases for training of emergency medical technicians in endotracheal intubation].

BACKGROUND: Before emergency medical technicians are licensed to perform prehospital endotracheal intubation, they must undergo training in the operating room setting. We investigated the incidence of cases of difficult intubation classified as Cormack & Lehane grade III or IV, because such cases are considered inappropriate for training emergency medical technicians. METHODS: We examined anesthesia records between March 2002 and April 2003, retrospectively. The survey included 585 adult surgical patients with ASA physical status I or II requiring general endotracheal anesthesia. RESULTS: Five anesthesiologists and three doctors from the surgical department performed laryngoscopy during this period. In initial laryngoscopy with a Macintosh blade, the view of larynx was grade I in 436, grade II in 98, grade III in 27 and grade IV in 24 patients. In 68 patients, application of cricoid pressure led to improvement of laryngoscopy grade. The use of McCoy blade was necessary for intubation in 16 patients. Out of 51 patients classified as difficult intubation grade III or IV, 35 were originally not expected to be difficult cases. CONCLUSIONS: Patients with grade I or II view of larynx with a Macintosh blade was only 91%. In order to prepare for unexpected case of difficult intubation, it is necessary to take various measures such as having instructors perform laryngoscopy.

Anesthesia, General↗

The versatility of presculptured homograft incus prostheses.

A twelve-year experience with banked homograft ossicles has developed into a system of presculptured incus allografts adapted for the correction of many ossicular defects encountered in tympanoplasty and revision stapes surgery. The standardized preparation of a number of variations of modeled incus prostheses for an operating room bank by a well-trained ear homograft laboratory technician has been an effective and time-saving technique.

Ear Ossicles↗

Anesthesia considerations for orthotopic liver transplantation.

An institutionwide commitment is necessary for the success of a liver transplantation program. Although the number of people available to manage anesthesia for such surgery may vary, a minimally staffed transplantation team must include a staff anesthesiologist, an anesthesia resident, one or two certified nurse-anesthetists, and a nonprofessional to obtain and run specimens to the laboratory and blood bank; the operating room must be connected by intercom and telephone to support services. Another technician may be present to collect specimens and data for research purposes. Additional staff anesthesiologists, certified nurse-anesthetists, and anesthesia residents should be on call for other emergency surgery. The staff of laboratory and blood bank facilities must participate wholeheartedly to meet ongoing requirements during a liver transplantation. Enormous quantities of packed red cells (up to 250 units), fresh-frozen plasma, platelets, and occasionally cryoprecipitate must be immediately available. In addition, the donor pool and the supply of on-hand blood must be large enough to prevent shortages of blood for other emergency or routine surgery. Liver transplantation procedures last an average of 12 hours and cannot easily be accommodated in a busy operating room schedule. It is not reasonable to expect other patients, other surgeons, the anesthesiology department, and the hospital to postpone routine or other emergency surgery while a liver transplantation is being performed. Thus, the hospital must provide facilities to accommodate such a program either by new construction or by remodeling or reassigning operating space.

Adult↗

OR technicians. 1.

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Health Occupations↗

Effect of a pediatric trauma response team on emergency department treatment time and mortality of pediatric trauma victims.

OBJECTIVE: Delay in the provision of definitive care for critically injured children may adversely effect outcome. We sought to speed care in the emergency department (ED) for trauma victims by organizing a formal trauma response system. DESIGN: A case-control study of severely injured children, comparing those who received treatment before and after the creation of a formal trauma response team. SETTING: A tertiary pediatric referral hospital that is a locally designated pediatric trauma center, and also receives trauma victims from a geographically large area of the Western United States. SUBJECTS: Pediatric trauma victims identified as critically injured (designated as "trauma one") and treated by a hospital trauma response team during the first year of its existence. Control patients were matched with subjects by probability of survival scores, and were chosen from pediatric trauma victims treated at the same hospital during the year preceding the creation of the trauma team. INTERVENTIONS: A trauma response team was organized to respond to pediatric trauma victims seen in the ED. The decision to activate the trauma team (designation of patient as "trauma one") is made by the pediatric emergency medicine (PEM) physician before patient arrival in the ED, based on data received from prehospital care providers. Activation results in the notification and immediate travel to the ED of a pediatric surgeon, neurosurgeon, emergency physician, intensivist, pharmacist, radiology technician, phlebotomist, and intensive care unit nurse, and mobilization of an operating room team. Most trauma one patients arrived by helicopter directly from accident scenes. OUTCOME MEASURES: Data recorded included identifying information, diagnosis, time to head computerized tomography, time required for ED treatment, admission Revised Trauma Score, discharge Injury Severity Score, surgical procedures performed, and mortality outcome. Trauma Injury Severity Score methodology was used to calculate the probability of survival and mortality compared with the reference patients of the Major Trauma Outcome Study, by calculation of z score. RESULTS: Patients treated in the ED after trauma team initiation had statistically shorter times from arrival to computerized tomography scanning (27 +/- 2 vs 21 +/- 4 minutes), operating room (63 +/- 16 vs 623 +/- 27 minutes) and total time in the ED (85 +/- 8 vs 821 +/- 9 minutes). Calculation of z score showed that survival for the control group was not different from the reference population (z = -0.8068), although survival for trauma-one patients was significantly better than the reference population (z = 2.102). CONCLUSION: Before creation of the trauma team, relevant specialists were individually called to the ED for patient evaluation. When a formal trauma response team was organized, time required for ED treatment of severe trauma was decreased, and survival was better than predicted compared with the reference Major Trauma Outcome Study population.

Case-Control Studies↗

Nursing aspects of gynaecologic endoscopy.

Nurses now play an integral part in gynaecological endoscopic surgery, with the video camera enabling the operating room staff to visualise the entire procedure. Endoscopy teams are being developed in the operating room for specialised procedures to ensure that nurses assisting with such procedures are familiar with the endoscopic surgeon's routine, instrumentation and equipment. The team consists of the surgeon, surgical assistant, scrub technician, circulating nurse and laser nurse.

Female↗