Abstract：
:Increased QT dispersion (QTd) is a noninvasive marker of an electrophysiologic abnormality associated with high mortality in coronary artery disease. The purposes of this study were to measure changes in QTd and ST-segment changes immediately before, during and after intracoronary balloon inflation and to determine whether the coronary artery vessel involved and/or the duration of inflation affect(s) QTd. A total of 45 patients (32 men, 13 women, mean age 58 +/- 11 years) who were referred for elective percutaneous transluminal coronary angioplasty were included. The mean QT interval dispersions for all patients before the inflation, during the balloon inflation at 60 sec and after the balloon deflation at 5 min were 68 +/- 13 ms, 82 +/- 16 ms and 71 +/- 13 ms, respectively. There was no significant difference between baseline and 5 min after deflation. The increase in QTd during the balloon inflation was significant (p<0.01). There was no significant QTd change in patients with left circumflex artery (Cx) lesions during inflation and after deflation compared with baseline. The differences were statistically significant only in patients with left anterior descending (LAD) lesions and right coronary artery (RCA) lesions at 60 sec during balloon inflation (p=0.001 vs. p=0.04). Acute reversible myocardial ischemia induced by balloon inflation causes an increase in QTd limited to the LAD and RCA vessels. Therefore, when using QTd as a marker of myocardial repolarization abnormality due to acute reversible ischemia, the involved coronary artery vessel must be taken into account.
journal_name
J Natl Med Assocjournal_title
Journal of the National Medical Associationauthors
Kilic H,Atalar E,Necla O,Ovunc K,Aksoyek S,Ozmen Fsubject
Has Abstractpub_date
2007-08-01 00:00:00pages
914-6issue
8eissn
0027-9684issn
1943-4693journal_volume
99pub_type
杂志文章abstract：:At the St. Francis Medical Center during the 20-year period 1960-1980, there were 1,148 primary breast cancers with a 7.1 percent incidence of synchronous and metachronous invasive primary breast cancer. Twenty-one cases (1.8 percent of the total series) illustrate noninvasive cancer of the breast. The essential appro...
journal_title：Journal of the National Medical Association
pub_type： 杂志文章
doi：
更新日期：1986-11-01 00:00:00
abstract：:Ninety-eight patients underwent successful complete anterior or abdominoperineal resection for primary adenocarcinoma of the rectum, sigmoid, and rectosigmoid. At the time of diagnosis of relapse in 71 of these 98 patients, 36 patients had local-regional recurrence alone, without distant metastases.Twenty-two patients...
journal_title：Journal of the National Medical Association
pub_type： 杂志文章
doi：
更新日期：1986-09-01 00:00:00
abstract：:As part of an effort to better educate patients about using condoms, a survey was done to assess the sexual practices, attitudes toward acquired immunodeficiency syndrome (AIDS) and condom use by patients who visit an urban family practice center. A self-administered questionnaire was given to 126 patients of whom the...
journal_title：Journal of the National Medical Association
pub_type： 杂志文章
doi：
更新日期：1991-09-01 00:00:00
abstract：:Victims of domestic violence appeal to the health care system through emergency room visits for injuries related to violent episodes or for proxy care for other complaints. Screening for persons who are at high risk for violence or who are victims of violence has not been performed in emergency rooms when patients pre...
journal_title：Journal of the National Medical Association
pub_type： 杂志文章
doi：
更新日期：2002-06-01 00:00:00
abstract：:Carcinoma of the colorectum should be suspected and diagnosed early and treated adequately. Principles of surgical therapy are discussed. Meticulous follow-up is essential and re-exploration to remove recurrent disease is necessary. ...
journal_title：Journal of the National Medical Association
pub_type： 杂志文章
doi：
更新日期：1982-08-01 00:00:00
abstract：:Smooth muscle tumors are uncommon lesions of the vulva and represent a variety of histologic types. When encountered, surgical treatment is guided by the malignant potential of the tumors. This article presents the case of a 45-year-old woman who underwent conservative excision of a 10-cm vulvar lesion consistent with...
journal_title：Journal of the National Medical Association
pub_type： 杂志文章
doi：
更新日期：1999-03-01 00:00:00
abstract：:Stenosing tenosynovitis of the first dorsal compartment of the wrist (de Quervain's disease) is a common cause of radial wrist and hand pain and disability. Nonoperative management of the disease has been thought to provide only temporary relief of pain and swelling, while surgical intervention has been viewed as a mo...
journal_title：Journal of the National Medical Association
pub_type： 杂志文章
doi：
更新日期：1998-08-01 00:00:00
abstract：:In Nyanza Province, Kenya, estimated HIV prevalence is 22%. Given that more than 80% of the population resides in rural areas, the majority of individuals in Nyanza Province do not have access to medical facilities on a regular basis. In response to the growing demands the HIV epidemic has placed on the people and com...
journal_title：Journal of the National Medical Association
pub_type： 杂志文章
doi：
更新日期：2004-04-01 00:00:00
abstract：:A convenience sample of all medical journals found in a medical clinic was reviewed for pharmaceutical advertisements. Ads were present in 25 (96%) of the 26 journals. Ad space varied from 0-34% (mean 12) in research, and 9-48% (mean: 36) in nonresearch journals. In 23 (88%) journals, individual ads consisted of more ...
journal_title：Journal of the National Medical Association
pub_type： 社论
doi：
更新日期：2005-05-01 00:00:00
abstract：OBJECTIVE:The purpose of this study is to characterize African-American women attending a community clinic who report frequent douching (douching > or = 2 times per week). METHODS:A consecutive sample of 115 black women attending a community clinic were interviewed face-to-face about their douching practices. Logistic...
journal_title：Journal of the National Medical Association
pub_type： 杂志文章
doi：
更新日期：2005-10-01 00:00:00
abstract：:We have attempted to initiate a much needed constructive dialogue regarding the participation of African-American patients in clinical cancer research trials. It was our intent to provide a greater understanding of the historical context and evolving nature of clinical research trials pertaining to cancer. Some of the...
journal_title：Journal of the National Medical Association
pub_type： 社论
doi：
更新日期：1994-03-01 00:00:00
abstract：BACKGROUND:Racial and ethnic minorities are underrepresented in the health professions. Affirmative action and educational pipeline programs play a vital role in increasing the diversity of health professions, addressing educational opportunity gaps, and reducing health disparities. Part 1 of this 2-part series discuss...
journal_title：Journal of the National Medical Association
pub_type： 杂志文章,评审
doi：10.1016/s0027-9684(15)31030-0
更新日期：2009-09-01 00:00:00
abstract：:Crohn's disease is less prevalent in blacks than in whites. However, when it does occur, it is associated with a high degree of morbidity and is frequently unrecognized at initial presentation. Forty-three patients with Crohn's disease presented to Howard University Hospital between 1965 and 1987. There were 156 hospi...
journal_title：Journal of the National Medical Association
pub_type： 杂志文章
doi：
更新日期：1990-10-01 00:00:00
abstract：:After-hours telephone consultation is a well-established component of the practice of pediatric medicine. We describe an assessment of the propriety of after-hours telephone calls made by parents at an inner-city pediatric clinic. We conclude that an inner-city pediatric clinic experienced neither more frequent nor le...
journal_title：Journal of the National Medical Association
pub_type： 杂志文章
doi：
更新日期：2001-11-01 00:00:00
abstract：:Sixteen trauma victims with adult respiratory distress syndrome were retrospectively examined. High injury severity score (mean: 44), massive transfusion requirements, and prolonged ventilator days characterize this group. Persistent intra-abdominal infection accounted for two of three deaths in this series. Most of t...
journal_title：Journal of the National Medical Association
pub_type： 杂志文章
doi：
更新日期：1991-06-01 00:00:00
abstract：:The surgical approach to liver injury depends on a clear and concise characterization of the wound. Blunt trauma can produce devastating wounds that disrupt hepatic venous drainage. Atrial caval shunting remains a useful technique for Grade V liver wounds. Liver packing may be necessary if diffuse lobar injury, acidos...
journal_title：Journal of the National Medical Association
pub_type： 杂志文章
doi：
更新日期：1994-01-01 00:00:00
abstract：:African Americans have higher rates of hypertension and poorer health status than their white counterparts. This study assessed the relationship between health status, cardiovascular risk factors, and measured blood pressure. Free blood pressure screenings were performed at businesses and organizations located in west...
journal_title：Journal of the National Medical Association
pub_type： 杂志文章
doi：
更新日期：1998-11-01 00:00:00
abstract：:Despite the widespread availability of firearms, stab wounds to the abdomen, back, and flank continue to account for a significant number of injuries. The proper sequencing of diagnostic modalities in this patient group is constantly undergoing change. We report our experience with these injuries and present a new alg...
journal_title：Journal of the National Medical Association
pub_type： 杂志文章
doi：
更新日期：1991-02-01 00:00:00
abstract：:Obesity is on the rise worldwide. An obesity subtype, metabolically healthy obese (MHO), is resilient to unfavorable metabolic and cardiovascular effects. Factors predicting MHO phenotype are not well characterized. We aimed to identify MHO and metabolically unhealthy obese (MUO) children and adolescents with respect ...
journal_title：Journal of the National Medical Association
pub_type： 杂志文章
doi：10.1016/j.jnma.2017.02.008
更新日期：2017-10-01 00:00:00
abstract：:The author presents a four-year follow-up of a male patient with cancer of the breast. The lesion was large, fungating, and ulcerating. It was treated effectively with cobalt without mastectomy. ...
journal_title：Journal of the National Medical Association
pub_type： 杂志文章,评审
doi：
更新日期：1987-08-01 00:00:00
abstract：:This study examines the relationship between sexual behaviors and prevalence of herpes simplex virus-type 2 (HSV-2) among African-American college women. Subjects (n = 138) were recruited randomly from a state university to participate in a study regarding sexual attitudes and behaviors and to have their blood drawn f...
journal_title：Journal of the National Medical Association
pub_type： 杂志文章
doi：
更新日期：1999-04-01 00:00:00
abstract：OBJECTIVE:The objective of this study was to investigate the relationship between occupation and head and neck cancers. PATIENTS AND METHODS:In this case-control study, 206 Turkish patients with head and neck cancers comprised the case group. The control group consisted of 206 age- and sex-matched patients without mal...
journal_title：Journal of the National Medical Association
pub_type： 杂志文章
doi：
更新日期：2007-01-01 00:00:00
abstract：:There have been a number of studies looking at the prevalence of Parkinson's disease (PD) in different racial and geographical populations. Some of the earliest studies suggested a difference in the prevalence of PD in African Americans as compared with Caucasians. As such a difference would have important implication...
journal_title：Journal of the National Medical Association
pub_type： 杂志文章,评审
doi：
更新日期：2004-07-01 00:00:00
abstract：:This paper describes the use of a mobile health unit as a part of a community education, screening, and counseling program. By virtue of its mobility and more flexible hours, this model extends services into the basic urban, suburban, and rural community. Quality control of the diagnostic and counseling activities on ...
journal_title：Journal of the National Medical Association
pub_type： 杂志文章
doi：
更新日期：1982-10-01 00:00:00
abstract：:A 31-year-old black man presented with bilateral multiple renal papillary adenocarcinomas. The patient had been maintained on captopril therapy for severe hypertension for three years. The possibility of drug-induced malignancy is discussed. ...
journal_title：Journal of the National Medical Association
pub_type： 杂志文章
doi：
更新日期：1984-11-01 00:00:00
abstract：OBJECTIVE:A pilot study to determine whether prenatal and neonatal sickle cell tests conform to the guidelines established by the American Congress of Obstetricians and Gynecologists and the American Academy of Pediatrics. METHODS:The project was initially structured as a pair of in-person interviews of postpartum wom...
journal_title：Journal of the National Medical Association
pub_type： 杂志文章,多中心研究
doi：10.1016/s0027-9684(15)30089-4
更新日期：2013-04-01 00:00:00
abstract：:If minority students likely to score low on the Medical College Admissions Test (MCAT) can be identified in advance, they can be advised to take existing preparatory programs, or programs can be developed to meet their needs. Correlation coefficients for a number of available independent variables with MCAT scores wer...
journal_title：Journal of the National Medical Association
pub_type： 杂志文章
doi：
更新日期：1987-06-01 00:00:00
abstract：:Within 50 years, if current trends continue, 50 million elderly Americans will suffer visual impairment from macular degeneration or cataract. However, available evidence indicates that this impending crisis of visual health can be minimized by a simple, safe, inexpensive, and practical means of prevention. Cataract a...
journal_title：Journal of the National Medical Association
pub_type： 杂志文章
doi：
更新日期：1992-04-01 00:00:00
abstract：BACKGROUND:Few studies have characterized ethnic variations in standard ophthalmic measures. We tested the hypothesis that nerve fiber layer thickness would show characteristic differences between white and black individuals. We also examined whether ophthalmic measures would show intraethnic differences. METHODS:Seve...
journal_title：Journal of the National Medical Association
pub_type： 杂志文章
doi：
更新日期：2007-02-01 00:00:00
abstract：:A comprehensive family practice clerkship program at Howard University College of Medicine has been conducted since 1970. This institution is one of three predominantly black institutions offering a family practice program. The senior clerkship is mandatory and at least 20 to 25 percent of each class elect to particip...
journal_title：Journal of the National Medical Association
pub_type： 杂志文章
doi：
更新日期：1988-08-01 00:00:00
