• Study Resource
  • Explore Categories
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Dynamics of Heart Rate Turbulence
Dynamics of Heart Rate Turbulence

... In both, surviving and non-surviving patients, heart-rate turbulence decreased with increasing heart rates. The characteristics of the correlations were somewhat different for both parameters. Turbulence Onset was highest at low heart rates and gradually decreased at higher heart rates. At a heart r ...
acls pretest answer key - PRO-CPR
acls pretest answer key - PRO-CPR

... Start epinephrine 2-10 mcg/min (New standard that they will be hearing about on the DVD. It would also be appropriate to give Dopamine, even though the BP is not low, for the treatment of bradycardia as well but the dosage would need to be 2 mcg/kg/min – that dosage will be on their post test and is ...
Atrial Septal Defect
Atrial Septal Defect

... Why do atrial septal defects (ASDs) happen? The heart starts out as a simple tube. It needs to change a lot as your baby develops within the womb (uterus). By the time you are eight weeks pregnant your baby should have four chambers in their heart. The development of the atrial septum is complicated ...
Premature Ventricular Contractions
Premature Ventricular Contractions

... certain hormones, such as adrenaline or thyroid, can cause PVCs. Consuming substances such as alcohol and caffeine can also cause them. ...
Ectopic heartbeat
Ectopic heartbeat

... A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org). URAC's accreditation program is an independent audit to verify that A.D.A.M. follows rigorous standards of quality and accountability. A.D.A.M. is among the first to achieve this impo ...
EKG Final Exam TEST A - 50 questions
EKG Final Exam TEST A - 50 questions

... 2nd AV Block (Mobitz II) is considered a more serious life threatening block than Wenckebach, because it is sometimes followed by complete heart block ( 3rd AV Block ) A. True B. False C. The question is irrelevant ...
Control of heart rate An overview of how the heart
Control of heart rate An overview of how the heart

... 4) The increased blood flow that this causes leads to more CO2 being removed in the lungs and so the CO2 levels return to normal 5) As a consequence the pH of the blood rises to normal and the chemoreceptors in the wall of the carotid arteries and aorta reduce the frequency of nerve impulses to the ...
THE GRAPH OF AN ECG
THE GRAPH OF AN ECG

... 1. What does ECG stand for and what does it record? 2. What are the different parts of an ECG wave of cycle? 3. Show a graph of one ECG wave making sure to label all parts. How long does each part last? 4. What does each part of an ECG wave show or represent? 5. Show a graph of a heart and label the ...
The SAMe-TT2R2 score and quality of anticoagulation in AF: Can
The SAMe-TT2R2 score and quality of anticoagulation in AF: Can

... how many visits had INRs in range and divides by the total number of visits. If the patient had nine visits and six had readings within their therapeutic range, then the patient is considered in range 66 % of the time. This usually defines a Percentage of INRs in therapeutic range (PINRR). The PINNR ...
X35129134
X35129134

... task. Savitzky Golay filter works well in noise elimination [3-5]. Atrial fibrillation is a common type of arrhythmia. It is much common than atrial flutter, affecting 5-10% of elderly people. The basis of atrial fibrillation is rapid and chaotic depolarization occurring throughout the atria. No “P” ...
S0735109715007615_mmc1
S0735109715007615_mmc1

... 5. West R, McNeill A, Raw M. Smoking cessation guidelines for health professionals: an update. Health Education Authority. Thorax 2000;55:987-99. 6. Anderson JL, Halperin JL, Albert NM, et al. Management of patients with atrial fibrillation (compilation of 2006 ACCF/AHA/ESC and 2011 ACCF/AHA/HRS rec ...
Atrioventricular Nodal Reentrant Tachycardia in a Patient with
Atrioventricular Nodal Reentrant Tachycardia in a Patient with

... Treatment of AVNRT with catheter ablation is highly successful. Radiofrequency catheter ablation has a very high success rate, but carries a small but true risk of AV block. This risk may be higher in cases where the anatomy of the AV conduction system is altered by the presence of congenital heart ...
- The waves: o P: arterial depolarization o QRS: ventricular
- The waves: o P: arterial depolarization o QRS: ventricular

... In 3rd degree AV block, the AV node does not conduct the impulse at all. The atrium pumps with the SA node. The ventricle pumps through Purkinje fibers. In that case, the heart rate is between 15 and 40 (The rate of Purkinje fibers). To treat this problem, we use an artificial pacemaker ...
Progress toward controlling in vivo fibrillating sheep
Progress toward controlling in vivo fibrillating sheep

... The idea that small electrical stimuli can affect the dynamics of the heart is not new. It is well known that arrythmias such as atrial flutter and ventricular tachycardia can be initiated and terminated by one or more properly timed stimuli.20 Unfortunately, attempts to interrupt atrial or ventricu ...
Application and Dysrhythmia Interpretation
Application and Dysrhythmia Interpretation

... This is a Premature Atrial Contraction or PAC •If it arises from the Junctional area, it will have a PR Interval which is less than normal or no P wave at all This is a Premature Junctional Contraction or PJC •If it arises from the Ventricular area, it will be a QRS which is wide and bizarre shaped ...
EKGs - KentuckyOne Health
EKGs - KentuckyOne Health

... This is a Premature Atrial Contraction or PAC •If it arises from the Junctional area, it will have a PR Interval which is less than normal or no P wave at all This is a Premature Junctional Contraction or PJC •If it arises from the Ventricular area, it will be a QRS which is wide and bizarre shaped ...
Right atrial thrombus and its causes
Right atrial thrombus and its causes

... autopsies, similar to the prevalence of left cardiac thrombi (2). The shallow anatomy of the RA appendage makes it a less likely site for thrombus formation in patients in atrial fibrillation; those with RA appendage thrombi tend to have a larger RA area and lower RA appendage emptying velocities tha ...
Randomized Trial of Rate-Control Versus Rhythm-Control
Randomized Trial of Rate-Control Versus Rhythm-Control

... points except hospitalizations. These data suggest that there was no benefit in attempting rhythm-control in these patients with a high risk of arrhythmia recurrence. It remains unclear whether the results in the rhythm-control group would have been better if sinus rhythm had been maintained in a hi ...
digoxin - Cardiology
digoxin - Cardiology

... 4) SECOND DEGREE OR COMPLETE AV BLOCK ...
Full Text  - Res Cardiovasc Med
Full Text - Res Cardiovasc Med

... an established therapy for patients with systolic heart failure (HF), low ejection fraction (EF) and prolonged QRS duration and who had received optimal drug treatment (1, 2). CRT improves left ventricular function, clinical status, quality of life and reduces hospitalization and mortality (3). Atri ...
NOT ALL AV DISSOCIATION = COMPLETE HEART
NOT ALL AV DISSOCIATION = COMPLETE HEART

...  2) “Early Coupled”- Blocked in the right bundle branch (RBB). The RBB has the longest refractory time. APD is generated before it can repolarizeECG has characteristic RBBB signs (Wide double peaked rSR’ in V1 and Broad S in V6). With Pause.  3) “Tight coupled” or “Super Early”- Complete block i ...
Methods - Trials
Methods - Trials

... permanent AF, persistent AF into permanent AF, as well as the incidence of overall and persistent AF recurrence, which are evaluated by 7-days ambulatory electrocardiograph monitoring (Holter) and patients’ diaries during 2 years follow-up. The secondary endpoints of this study include: (1) fatal an ...
The P Wave: Indicator of Atrial Enlargement - e
The P Wave: Indicator of Atrial Enlargement - e

... Once you've determined that a P wave precedes each QRS complex, you must scrutinize the P wave for contour and size. The normal P wave is less than 0.12 seconds in duration, and the largest deflection, whether positive or negative, should not exceed 2.5 mm. An abnormal P wave may indicate atrial enl ...
ACLS Study Guide - Centegra Health System
ACLS Study Guide - Centegra Health System

... Wide Complex Tachycardia (usually monomorphic ventricular tachycardia) Abnormal Ventricular tachycardia is simply the presence of three or more ectopic ventricular complexes in a row with a rate above 100. Originates from one irritable focus so the rhythm is regular. ...
Are Sinus Node Dysfunction and Pacemaker
Are Sinus Node Dysfunction and Pacemaker

...  No confounding or interaction effect from  duration of atrial  fibrillation, age at time of Atrial fibrillation, CHF , CAD ,  electrolytes  , structural heart disease , medications.  Missing data might bias our study results.  ...
< 1 ... 72 73 74 75 76 77 78 79 80 ... 142 >

Atrial fibrillation



Atrial fibrillation (AF or A-fib) is an abnormal heart rhythm characterized by rapid and irregular beating. Often it starts as brief periods of abnormal beating which become longer and possibly constant over time. Most episodes have no symptoms. Occasionally there may be heart palpitations, fainting, shortness of breath, or chest pain. The disease increases the risk of heart failure, dementia, and stroke.Hypertension and valvular heart disease are the most common alterable risk factors for AF. Other heart-related risk factors include heart failure, coronary artery disease, cardiomyopathy, and congenital heart disease. In the developing world valvular heart disease often occurs as a result of rheumatic fever. Lung-related risk factors include COPD, obesity, and sleep apnea. Other factors include excess alcohol intake, diabetes mellitus, and thyrotoxicosis. However, half of cases are not associated with one of these risks. A diagnosis is made by feeling the pulse and may be confirmed using an electrocardiogram (ECG). The typical ECG shows no P waves and an irregular ventricular rate.AF is often treated with medications to slow the heart rate to a near normal range (known as rate control) or to convert the rhythm to normal sinus rhythm (known as rhythm control). Electrical cardioversion can also be used to convert AF to a normal sinus rhythm and is often used emergently if the person is unstable. Ablation may prevent recurrence in some people. Depending on the risk of stroke either aspirin or anti-clotting medications such as warfarin or a novel oral anticoagulant may be recommended. While these medications reduce this risk, they increase rates of major bleeding.Atrial fibrillation is the most common serious abnormal heart rhythm. In Europe and North America, as of 2014, it affects about 2% to 3% of the population. This is an increase from 0.4 to 1% of the population around 2005. In the developing world about 0.6% of males and 0.4% of females are affected. The percentage of people with AF increases with age with 0.14% under 50 years old, 4% between 60 and 70 years old, and 14% over 80 years old being affected. A-fib and atrial flutter resulted in 112,000 deaths in 2013, up from 29,000 in 1990. The first known report of an irregular pulse was by John Baptist Senac in 1749. This was first documented by ECG in 1909 by Thomas Lewis.
  • studyres.com © 2026
  • DMCA
  • Privacy
  • Terms
  • Report