Arch Intern Med
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Multicenter Study Meta Analysis
Preoperative autologous donation decreases allogeneic transfusion but increases exposure to all red blood cell transfusion: results of a meta-analysis. International Study of Perioperative Transfusion (ISPOT) Investigators.
Concern about risks associated with allogeneic red blood cell transfusion has led to interest in methods of decreasing patient exposure to perioperative transfusion. ⋯ Preoperative autologous donation of blood decreases exposure to allogeneic blood but increases exposure to any transfusion (allogeneic and/or autologous). There is a direct relationship between the transfusion rate in the control group and the benefit derived from preoperative autologous donation. This suggests that other methods of decreasing blood transfusion, such as surgical technique and transfusion protocols, may be as important as preoperative autologous donation of blood.
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The Department of Veterans Affairs Health Care System (VA) is the largest integrated single payer system in the United States. To date, there has been no systematic measurement of health status in the VA. The Veterans Health Study has developed methods to assess patient-based health status in ambulatory populations. ⋯ The VA outpatients have substantially worse health status than non-VA populations. Mental health differences between the young and old veterans who use the VA health care system are sharply contrasting; the young veterans are sicker, suggesting substantially higher resource needs. Mental health differences may explain much of the worse health-related quality of life in young veterans. As health care systems continue to undergo a radical transformation, the Department of Veterans Affairs should focus on the provision of mental health services for its younger veteran.
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The advent of echocardiography has led to the more frequent discovery of impending paradoxical embolism. Paradoxical embolism should be considered whenever there is an arterial embolism from an unidentified source in the presence of a concomitant venous thromboembolic phenomenon. ⋯ Events that give rise to pulmonary hypertension may result in a right-to-left shunt through a patent foramen ovale allowing a venous thromboembolism access to the arterial circulation. Herein we report a case of impending paradoxical embolism and review the pertinent literature.
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Since the passage of the Patient Self-Determination Act in 1991, there has been interest in urging patients to execute advance directives (ADs) for medical care. There are not much data, however, as to what the ADs that patients execute actually specify. I have investigated the percentage of inpatients and outpatients who are admitted to a community hospital who have executed ADs, and I have tabulated what preferences are actually expressed in the ADs that are in hospital records. ⋯ The overwhelming desire expressed by the patients in the ADs was not to have their lives prolonged if their medical condition were such that treatment would merely delay death. Only a minuscule number of patients, less than 0.7%, wanted everything done to prolong life regardless of the chance for improvement or the cost. Because such a small percentage of patients have ADs, it is recommended that each hospital appoint a committee on ADs to do everything possible to encourage patients to execute an AD. A second mission of this committee would be to do everything possible to encourage physicians to pay close attention to their patients' wishes for medical care at the end of life.
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Severe hyperphosphatemia resulting from the use of laxatives and enemas with high levels of phosphate has been the subject of many case reports. These have generally focused on the hypernatremia and hypocalcemia that develop and become life-threatening. Less attention has been paid to the metabolic acidosis of phosphate intoxication. ⋯ Among high-risk patients, including the elderly and debilitated, the presence of metabolic acidosis, hypernatremia, an increased anion gap, and low plasma calcium levels or a prolonged QT interval on the electrocardiogram should raise suspicion of phosphate intoxication.