Abstract:
OBJECTIVE:To describe 3 patients who presented with chest pain and intermittent Q waves on the electrocardiogram (ECG) and were subsequently found to have latent preexcitation. PATIENTS AND METHODS:During a span of 8 years, 3 patients were evaluated because of atypical chest pain and pathologic Q waves in the inferior leads; in all 3 patients, the Q waves were intermittent. No patient had a history of arrhythmia or had Wolff-Parkinson-White pattern on the ECG. Diagnostic and therapeutic interventions for suspected myocardial infarction included cardiac catheterization in 2 patients, intravenous thrombolytic therapy in 1 patient, and heparin in 2 patients. Ischemic heart disease was excluded in all. Patients underwent pharmacological testing and/or electrophysiologic study for suspected preexcitation. RESULTS:Despite the absence of ECG markers of preexcitation, the presence of a latent accessory atrioventricular connection was confirmed in each patient by pharmacological or electrophysiologic studies. CONCLUSION:In patients who present with intermittent noninfarction Q waves, the most likely diagnosis is latent preexcitation. Clinicians need to be educated about this clinical diagnosis and encouraged to pursue confirmatory testing. Such patients should be informed about the nature and importance of their electrocardiographic abnormality.
journal_name
Mayo Clin Procjournal_title
Mayo Clinic proceedingsauthors
Letts DP,Constantine JC,Littmann Ldoi
10.4065/78.7.840keywords:
subject
Has Abstractpub_date
2003-07-01 00:00:00pages
840-3issue
7eissn
0025-6196issn
1942-5546pii
S0025-6196(11)62684-0journal_volume
78pub_type
杂志文章abstract::Treatment of seniors with Parkinson disease is within the domain of primary care physicians and internists. A good working knowledge of carbidopa/levodopa principles should allow excellent care of most patients, at least during the early years of the disease. Even later, when levodopa responses become more complicated...
journal_title:Mayo Clinic proceedings
pub_type: 杂志文章,评审
doi:10.4065/mcp.2011.0443
更新日期:2011-12-01 00:00:00
abstract:OBJECTIVE:To identify and assess the impact of postoperative complications in patients with unrecognized or known obstructive sleep apnea syndrome (OSAS) undergoing hip replacement or knee replacement compared with control patients undergoing similar operations. Although OSAS is a risk factor for perioperative morbidit...
journal_title:Mayo Clinic proceedings
pub_type: 杂志文章
doi:10.4065/76.9.897
更新日期:2001-09-01 00:00:00
abstract::Restless legs syndrome (RLS) is a common disorder with a prevalence of 5% to 15%. Primary care physicians must become familiar with management of this disorder. This algorithm for the management of RLS was written by members of the Medical Advisory Board of the Restless Legs Syndrome Foundation and is based on scienti...
journal_title:Mayo Clinic proceedings
pub_type: 杂志文章
doi:10.4065/79.7.916
更新日期:2004-07-01 00:00:00
abstract::The monoclonal gammopathies are a group of disorders characterized by proliferation of a single clone of plasma cells that produce a homogeneous, monoclonal (M) protein. The structure of immunoglobulins, relationship of normal (polyclonal) immunoglobulins to myeloma and macroglobulin (monoclonal) immunoglobulins, patt...
journal_title:Mayo Clinic proceedings
pub_type: 杂志文章
doi:
更新日期:1978-11-01 00:00:00
abstract:OBJECTIVE:To define mortality associated with isolated tricuspid regurgitation (TR) and identify risk factors associated with decreased survival. PATIENTS AND METHODS:We conducted a retrospective cohort study of residents of southeastern Minnesota with moderate-severe or more severe isolated TR diagnosed between Janua...
journal_title:Mayo Clinic proceedings
pub_type: 杂志文章
doi:10.1016/j.mayocp.2019.04.036
更新日期:2019-10-01 00:00:00
abstract:OBJECTIVE:To explore the influence of referral bias on complication rates after vaginal hysterectomy. PATIENTS AND METHODS:Community-based (local) and referral patients had benign indications and underwent vaginal hysterectomy from January 1, 2004, through December 31, 2005. We retrospectively evaluated patient charac...
journal_title:Mayo Clinic proceedings
pub_type: 杂志文章
doi:10.4065/mcp.2009.0299
更新日期:2010-02-01 00:00:00
abstract::Prompt and appropriate management measures are critical in order to achieve a favorable outcome after a major overdose of intrathecally (IT) administered methotrexate (MTX). Published information available to guide clinicians in the immediate management of this medical emergency is scant. Herein we describe a 6-year-o...
journal_title:Mayo Clinic proceedings
pub_type: 杂志文章
doi:10.4065/71.2.161
更新日期:1996-02-01 00:00:00
abstract:OBJECTIVE:To determine whether pancreas transplantation alters lipid and lipoprotein concentrations and whether peripheral hyperinsulinemia is always associated with altered lipid levels. DESIGN:We assessed the lipid profiles of seven pancreas-kidney recipients with insulin-dependent diabetes mellitus, seven kidney re...
journal_title:Mayo Clinic proceedings
pub_type: 杂志文章
doi:10.1016/s0025-6196(12)61061-1
更新日期:1994-03-01 00:00:00
abstract::We describe two patients with diffuse non-Hodgkin's lymphoma, hypercalcemia, and increased activity of serum angiotensin-converting enzyme. A mechanism similar to that operative in sarcoidosis is speculated to have caused the hypercalcemia. A lymphokine elaborated by the malignant lymphoma may cause activated macropha...
journal_title:Mayo Clinic proceedings
pub_type: 杂志文章
doi:10.1016/s0025-6196(12)62771-2
更新日期:1986-09-01 00:00:00
abstract:OBJECTIVE:To compare the indications for hospital admission between current, former, and never smokers and to compare their costs per hospital admission, testing the hypothesis that the cost per hospital admission would be higher for smokers than for former and never smokers. PATIENTS AND METHODS:This study used a ret...
journal_title:Mayo Clinic proceedings
pub_type: 杂志文章
doi:10.1016/j.mayocp.2018.02.022
更新日期:2018-08-01 00:00:00
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journal_title:Mayo Clinic proceedings
pub_type: 杂志文章
doi:10.1016/s0025-6196(12)62471-9
更新日期:1991-12-01 00:00:00
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journal_title:Mayo Clinic proceedings
pub_type: 杂志文章,评审
doi:10.4065/72.2.160
更新日期:1997-02-01 00:00:00
abstract:OBJECTIVE:To investigate the impact on cardiovascular events (CVEs) in a real-world population of patients with atrial fibrillation (AF) by implementing the Atrial fibrillation Better Care (ABC: A, Avoid stroke with anticoagulation; B, better symptom management; C, Cardiovascular and comorbidity risk management) pathwa...
journal_title:Mayo Clinic proceedings
pub_type: 杂志文章
doi:10.1016/j.mayocp.2018.10.022
更新日期:2019-07-01 00:00:00
abstract::As part of a multicenter investigative trial, transurethral microwave thermotherapy of the prostate was used in 60 men with symptomatic benign prostatic hypertrophy. A single office treatment on the Prostatron, a device that provides concurrent microwave heating of the prostate and conductive cooling of the urethra, w...
journal_title:Mayo Clinic proceedings
pub_type: 杂志文章,多中心研究
doi:10.1016/s0025-6196(12)60386-3
更新日期:1992-05-01 00:00:00
abstract::The Mayo Three-Community Hypertension Control Program implemented graduated programs for the control of high blood pressure in three rural southeastern Minnesota communities, beginning in 1974. Prevalence of hypertension (when defined as diastolic blood pressure, at initial screening, of 95 mm Hg or more) was similar ...
journal_title:Mayo Clinic proceedings
pub_type: 杂志文章
doi:
更新日期:1979-05-01 00:00:00
abstract::Since the early 1970s, investigators have been interested in the relationship between dietary marine fish oils and plasma lipoproteins. Previous studies have shown that consumption of a diet rich in marine fatty acids results in altered lipid profiles, prolonged bleeding times, reduced platelet aggregation, and decrea...
journal_title:Mayo Clinic proceedings
pub_type: 临床试验,杂志文章,评审
doi:10.1016/s0025-6196(12)61879-5
更新日期:1987-02-01 00:00:00
abstract::Between December 1980 and April 1986 at our institution, 38 patients with cancer that involved the tracheobronchial tree (a total of 40 carcinomas) completed at least one course of hematoporphyrin derivative phototherapy. A complete response occurred in 13 patients (with 14 carcinomas). Eleven of these carcinomas did ...
journal_title:Mayo Clinic proceedings
pub_type: 杂志文章
doi:10.1016/s0025-6196(12)61520-1
更新日期:1987-01-01 00:00:00
abstract:OBJECTIVE:To evaluate the efficacy and tolerability of sumatriptan, 50-mg and 100-mg tablets, compared with placebo for treatment of migraine at the first sign of pain. PATIENTS AND METHODS:Two identical multicenter randomized, double-blind, placebo-controlled, single-attack studies were conducted from May through Nov...
journal_title:Mayo Clinic proceedings
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.4065/78.10.1214
更新日期:2003-10-01 00:00:00
abstract::The Human Genome Project has resulted in a new era in the field of pharmacogenetics in which researchers are rapidly discovering new genetic variation, which may help to explain interindividual variability in drug efficacy and toxicity. Pharmacogenetics is the study of the role of genetic inheritance in individual var...
journal_title:Mayo Clinic proceedings
pub_type: 杂志文章,评审
doi:10.4065/79.3.376
更新日期:2004-03-01 00:00:00
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journal_title:Mayo Clinic proceedings
pub_type: 杂志文章
doi:10.1016/S0025-6196(11)64885-4
更新日期:1998-07-01 00:00:00
abstract::Glucocorticoids are potent anti-inflammatory agents that play an important role in the therapy of many patients with connective tissue diseases, including systemic lupus erythematosus, polymyalgia rheumatica, various types of vasculitis, and complications of rheumatoid arthritis. Glucocorticoids reduce the number and ...
journal_title:Mayo Clinic proceedings
pub_type: 杂志文章,评审
doi:
更新日期:1980-12-01 00:00:00
abstract::THE purpose of this study was to determine the difference in prognosis among patients with transient ischemic attacks (TIA) in the carotid arterial system and those with TIA in the vertebral-basilar arterial system. Nearly twice as many patients had TIA in the carotid system as had TIA in the vertebral-basilar system....
journal_title:Mayo Clinic proceedings
pub_type: 杂志文章
doi:
更新日期:1977-02-01 00:00:00
abstract::From 1974 through 1982, fulminant hepatitis was diagnosed in 34 patients at our institution. Of these patients, only two survived (survival rate, 6%). This syndrome was caused by viruses (B and non-B hepatitis and herpes simplex) in 23 patients, hepatotoxic drug in 6, Wilson's disease (hepatolenticular degeneration) i...
journal_title:Mayo Clinic proceedings
pub_type: 杂志文章
doi:10.1016/s0025-6196(12)60534-5
更新日期:1985-05-01 00:00:00
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journal_title:Mayo Clinic proceedings
pub_type: 杂志文章
doi:
更新日期:1981-01-01 00:00:00
abstract::The first 100 liver transplantations at the Mayo Clinic were performed in 83 patients, who required a total of 917 patient days in the intensive-care unit (ICU). The mean duration of stay in the ICU was 5.91 days after liver transplantation and 6.15 days for patients who subsequently required readmission to the ICU. D...
journal_title:Mayo Clinic proceedings
pub_type: 杂志文章
doi:10.1016/s0025-6196(12)65734-6
更新日期:1989-04-01 00:00:00
abstract:OBJECTIVE:To examine the effect of objectively measured exercise capacity (EC) on early mortality (EM) after a first myocardial infarction (MI). PATIENTS AND METHODS:This retrospective cohort study included 2061 patients without a history of MI (mean age, 62±12 years; 38% [n=790] women; 56% [n=1153] white) who underwe...
journal_title:Mayo Clinic proceedings
pub_type: 杂志文章
doi:10.1016/j.mayocp.2015.11.012
更新日期:2016-02-01 00:00:00
abstract:OBJECTIVE:To assess the effect of race on the incidence of aortic stenosis (AS) and utilization and outcomes of aortic valve replacement (AVR). PATIENTS AND METHODS:Patients older than 60 years hospitalized with a primary diagnosis of AS and those who underwent AVR between 2003 and 2014 were included. Adjusted and una...
journal_title:Mayo Clinic proceedings
pub_type: 杂志文章
doi:10.1016/j.mayocp.2017.11.026
更新日期:2018-05-01 00:00:00
abstract::Breast reconstruction immediately after mastectomy is being used with increasing frequency. In a study of the first 100 consecutive patients at our institution who underwent this procedure, with (21 patients) or without (79 patients) later nipple reconstruction, 85% responded affirmatively on a follow-up questionnaire...
journal_title:Mayo Clinic proceedings
pub_type: 杂志文章
doi:10.1016/s0025-6196(12)62440-9
更新日期:1987-03-01 00:00:00
abstract::Thromboembolic complications continue to be potential hazards in patients with prosthetic heart valves, and cerebral infarct and transient neurologic deficits as a result of embolism are the most common manifestations. Actual thrombotic obstruction of the valve occurs less frequently but is often fatal unless it is re...
journal_title:Mayo Clinic proceedings
pub_type: 杂志文章
doi:10.1016/s0025-6196(12)60297-3
更新日期:1985-02-01 00:00:00
abstract::The increased frequency of prenatal ultrasonography has resulted in an increase in the detection of fetal genitourinary abnormalities, many of which are of minimal clinical significance. Severe fetal urinary tract obstruction with associated oligohydramnios results in a recognizable constellation of physical findings,...
journal_title:Mayo Clinic proceedings
pub_type: 杂志文章,评审
doi:10.4065/70.2.145
更新日期:1995-02-01 00:00:00