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Electrocardiogram Procedures News
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All Recent Electrocardiogram Procedures News |
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The relationship between angiotensin converting enzyme gene I/D polymorphism and QT dispersion in patients with hypertrophic cardiomyopathy
Conclusion: QTd and QTcd are increased in patients with HCM, especially in those with the DD genotype. (Source: Journal of the Renin-Angiotensin-Aldosterone System : JRAAS)...
POSTED 09/01/2010 at 05:55 AM --
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Does Enzyte make anything longer?
This study, from the Chicago College of Osteopathic Medicine, had 9 healthy young male subjects ingest either placebo or varying doses of Enzyte, and then measured the QTc interval (determined by Bazett’s Formula) at 1, 3, and 5 hours after ingestion. Â The primary ECG end point was the maximum relative increase in the QTc between baseline and any of the three post-ingestion measurements.
The authors found modest seemingly insignificant increases in the QTc after the subjects ingested Enzyte, but these seem to me clinically insignificant. Â In fact, the differences between the groups were so small, the research methods so murky (exactly how were the QTc intervals determined?), and the confidence intervals so wide (in some groups roughly 10 -- 70%) that I was not able to get any usefu......
POSTED 08/31/2010 at 07:06 PM --
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Heart Rate Characteristics: Physiomarkers for Detection of Late-Onset Neonatal Sepsis
Early detection of late-onset neonatal sepsis, before the onset of obvious and potentially catastrophic clinical signs, is an important goal in neonatal medicine. Sepsis causes a well-known series of physiologic changes including abnormalities of blood pressure, respiration, temperature, and heart rate, and less well-known changes in heart rate variability. Although vital signs are frequently or continuously monitored in patients in the neonatal intensive care unit (NICU), changes in these parameters are subtle in the early phase of sepsis and difficult to interpret using traditional NICU monitoring tools. A new tool, continuous monitoring of heart rate characteristics (HRC), is now available for clinical use. Recent research has established that 2 abnormalities of HRC that have long been ......
POSTED 08/31/2010 at 06:00 PM --
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Atrial and Ventricular Functional and Structural Adaptations of the Heart in Elite Triathletes Assessed with Cardiac MR Imaging [Cardiac Imaging]
Conclusion:
Changes in cardiac morphologic characteristics and function in elite triathletes, as measured with cardiac MR imaging, reflect a combination of eccentric and concentric remodeling with regulative enlargement of atrial and ventricular chambers. These findings are different from what has been observed in previous studies in other types of elite athletes.
© RSNA, 2010 (Source: Continuous Publishing articles)...
POSTED 08/31/2010 at 11:33 AM --
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Risk index proposal to predict atrial fibrillation after cardiac surgery
CONCLUSION: In a multivariable logistic model was possible to develop a risk index proposal to predict postoperative AF with a major risk of 46.3% in the presence of three or more risk factors. (Source: Revista Brasileira de Cirurgia Cardiovascular)...
POSTED 08/29/2010 at 04:48 AM --
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Absence of electrocardiographic change after prolonged application of a conducted electrical weapon in physically exhausted adults. - Ho JD, Dawes DM, Heegaard WG, Calkins HG, Moscati RM, Miner JR.
Background: Conducted electrical weapons (CEWs) are used by law enforcement for control of subjects by causing neuromuscular incapacitation. There has been scrutiny of CEWs and their potential role in the occasional sudden death of subjects in custody. The... (Source: SafetyLit: All (Unduplicated))...
POSTED 08/28/2010 at 03:08 AM --
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ESC: ECG Not Much Help for Screening Athletes' Hearts (CME/CE)
STOCKHOLM (MedPage Today) -- While hypertrophic cardiomyopathy is the most common cause of sudden death in competitive soccer players, when pro players were screened for the problem with electrocardiography (ECG), all the positive results turned out to be false positives, according to a small study. (Source: MedPage Today Cardiovascular)...
POSTED 08/27/2010 at 10:13 PM --
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A Child with Serious Chikungunya Virus (CHIKV) Infection Requiring Intensive Care, After an Outbreak
Abstract A 5 1/2-yr-old boy presented with high grade fever for 4 days, and cervical adenitis, body ache, arthralgia, followed by sudden
onset of breathlessness. He had clinical, electrocardiographic and echo evidence of myocarditis and congestive cardiac failure.
An enzyme-linked immunosorbent assay (MAC-IgM ELISA) with serum collected 5 days after disease onset showed IgM antibodies
to CHIKV. He was managed conservatively and started showing symptomatic improvement by 3 days. At discharge, a repeat Echocardiogram
(a week later) showed normal left ventricular (LV) function with mild Mitral regurgitation. On follow up, after 2 months,
child remains asymptomatic. Other common aetiological agents were screened for and found negative. This may indicate a pr......
POSTED 08/27/2010 at 12:18 PM --
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Adherence to evidence-based guidelines for preoperative testing in women undergoing gynecologic surgery.
CONCLUSION:: Adherence to evidence-based recommendations for preoperative testing is poor. Inappropriate preoperative tests represent a major health care expenditure. LEVEL OF EVIDENCE:: III.
PMID: 20733454 [PubMed - in process] (Source: Obstetrics and Gynecology)...
POSTED 08/27/2010 at 03:58 AM --
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Autonomic and cellular mechanisms mediating detrimental cardiac effects of status epilepticus
Summary: Prolonged seizure activity (status epilepticus; SE) can result in increased susceptibility to lethal ventricular arrhythmias for an extended period of time following seizure termination. SE is accompanied by acute, intense activation of the sympathetic nervous system (SymNS) and results in myocyte myofilament damage, arrhythmogenic alterations in cardiac electrical activity, and increased susceptibility to ventricular arrhythmias. However, the mechanisms mediating the changes in cardiac function, and the specific arrhythmogenic substrate produced during SE are unknown. To determine if detrimental cardiac effects of SE are mediated by SymNS stimulation of the heart, we examined the effects of B-adrenergic blockade (atenolol) during seizure activity on blood pressure, heart rate, my......
POSTED 08/27/2010 at 01:53 AM --
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A Breath-Taking Change
A 61-year-old man was admitted for evaluation of epigastric abdominal pain and vomiting of 1-day duration. His medical history was significant for atrial fibrillation, persistent for the previous 12 months, hypertension, cholelithiasis, and morbid obesity. He had previously failed direct current cardioversion, and his most recent echocardiogram, performed 1 year before this hospital admission, demonstrated a left ventricular ejection fraction of >60% and mild concentric left ventricular hypertrophy. He had a 60 pack year smoking history but had stopped smoking 27 years earlier. At the time of his admission, he was taking warfarin, hydrochlorothiazide, and acetaminophen. (Source: The American Journal of Medicine)...
POSTED 08/27/2010 at 01:37 AM --
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[Case Report] A harmless high?
In March, 2010, a 15-year-old girl presented to our accident and emergency department with altered mental status, nausea, and vomiting. During the previous evening she had been out with friends, and had consumed a white powdery substance together with alcohol. On the day of admission she had become increasingly unwell, with symptoms that could not be attributed to a hangover and presented to us in the afternoon. Upon arrival, our patient was somnolent with a Glasgow Coma Score of 11 she opened her eyes in response to speech, uttered inappropriate words, and localised to pain. Blood pressure was 108/58 mm Hg; pulse rate was 54 beats per min; respiratory rate was 15 breaths per min; and ear-temperature was 36°C. Arterial blood gas analysis and 12-lead electrocardiogram were normal. There w......
POSTED 08/26/2010 at 06:00 PM --
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Assessment of global function of left ventricle with dual-source CT in patients with severe arrhythmia: a comparison with the use of two-dimensional transthoracic echocardiography
Abstract To evaluate the agreement between dual-source computed tomography (DSCT) and two-dimensional transthoracic echocardiography
(2D-TTE) with respect to the assessment of global left ventricular (LV) function in patients with severe arrhythmia. With
2D-TTE serving as the reference method, we performed both DSCT and 2D-TTE, at an interval of less than 2 days, in 54 patients
with severe arrhythmia (average heart rate difference >30 beats per min) before open heart surgery for evaluation of valvular
heart disease (VHD) and coronary artery disease. DSCT was performed using retrospective electrocardiography (ECG) without
dose modulation. Ten phases of the cardiac cycle were analyzed for identification of end-diastolic and end-systolic phases
with ECG-editing. Pears......
POSTED 08/26/2010 at 01:16 PM --
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[Broad QRS complex tachykardia - what is the mechanizm?]
We present the ECG with broad QRS complex tachycardia and left bundle branch block (LBBB) morphology. There are negative P waves in inferior leads (II, III, aVF) and positive in V1 with the RP interval of 124-164 ms. The slow-slow atrioventricular nodal reentrant tachycardia (AVNRT) conducted with LBBB aberrancy was diagnosed. The differential diagnosis of slow-slow AVNRT from atrioventricular reentrant tachycardia using concealed posteroseptal accessory pathway is discussed. Kardiol Pol 2010; 68, 8: 958-960.
PMID: 20730735 [PubMed - as supplied by publisher] (Source: Kardiologia Polska)...
POSTED 08/26/2010 at 11:24 AM --
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Systemic inflammation, heart rate variability and air pollution in a cohort of senior adults
Conclusions
Increased systemic inflammation is associated with autonomic dysfunction in the elderly. Air pollution effects on reduced SDNN are stronger in subjects with elevated systemic inflammation. (Source: Occupational and Environmental Medicine)...
POSTED 08/26/2010 at 07:50 AM --
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Spacelabs Healthcare, Incorporated - Intesys Clinical Suite (ICS) G2 92810 Smart Disclosure. - Class 2 Recall
Intesys Clinical Suite (ICS) G2 92810 Smart Disclosure. The Smart Disclosure product collects patient waveforms, alarms, vital signs and 12-lead reports. A 24-hour waveform acquisition is standard, with an upgrade option to 72 hours. The product provides basic trends in both tabular and graphical format, along with a retrospective ECG analysis. The analysis may be defined by patient, and the data may be presented in multiple formats, including a rhythm, a histogram, and a summary view. Standard reports are available from Smart Disclosure, including saved events, disclosure, trends histogram and summary. (Source: Medical Device Recalls since July 07, 2006)...
POSTED 08/25/2010 at 08:00 PM --
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Migraine with aura linked to heart risk
Conclusion
This is a large, cohort study with a lengthy follow-up. There are several limitations that should be taken into account when interpreting this research.
Only people who reported more than one headache a month were asked about their migraine features. Therefore, the people with migraines included in this study may only have been those experiencing high frequency migraine attacks.
The proportion of migraine sufferers who experienced aura is higher than reported in other population studies. The researchers say that this may be due to non-aura-specific visual symptoms such as vision blurring being classified as an aura. They also say that the combination of visual symptoms and headache can be symptoms of transient ischemic attack or mini stroke (a short lasting change in blood......
POSTED 08/25/2010 at 08:06 AM --
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Migraine with aura and heart risk
Conclusion
This is a large, cohort study with a lengthy follow-up. There are several limitations that should be taken into account when interpreting this research.
Only people who reported more than one headache a month were asked about their migraine features. Therefore, the people with migraines included in this study may only have been those experiencing high frequency migraine attacks.
The proportion of migraine sufferers who experienced aura is higher than reported in other population studies. The researchers say that this may be due to non-aura-specific visual symptoms such as vision blurring being classified as an aura. They also say the combination of visual symptoms and headache can be symptoms of transient ischemic attack or mini stroke (a short lasting change in blood flow......
POSTED 08/25/2010 at 08:06 AM --
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NICE costing report on clinical guideline for the management of patients with transient loss of consciousness
Source: NICE
Area: News
A costing report accompanying the NICE clinical guideline on the management of patients with transient loss of consciousness has been issued, and makes the following statements (taken directly from source):
. The guidance on Transient loss of consciousness ('blackouts') management in adults and young people (NICE clinical guideline 109) is likely to result in a significant change to the current diagnostic pathway for transient loss of consciousness (TLoC) in the NHS and may result in significant additional costs and savings across the clinical pathway.
. However, because of the huge variations in the management of TLoC, there is difficulty in establishing a baseline for current activity and therefore in predicting likely future activity.
......
POSTED 08/24/2010 at 06:00 PM --
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Altered Mental Status in a Young Man Picked Up On the Street
A 33-year-old man is brought to the ED with altered mental status. The patient has a very high temp and has admitted to using cocaine. What is the potentially life-threatening finding on the ECG? Medscape (Source: Medscape Today Headlines)...
POSTED 08/24/2010 at 11:08 AM --
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