Cases reported "Bradycardia"

Filter by keywords:



Filtering documents. Please wait...

1/220. Pseudo second degree atrioventricular block with bradycardia. Successful treatment with quinidine.

    Pseudo second degree atrioventricular block resulting from blocked His premature beats was successfully treated with quinidine. The diagnosis was proved by His bundle electrogam which showed both blocked and conducted His premature beats. The blocked His prematures produced second degree atrioventricular block by making the atrioventricular junction refractory. quinidine abolished both conducted and blocked His extrasystoles. There has been no recurrence of arrhythmia during a one-year follow-up.
- - - - - - - - - -
ranking = 1
keywords = block
(Clic here for more details about this article)

2/220. nicorandil, a potassium channel opener, abolished torsades de pointes in a patient with complete atrioventricular block.

    TdP is a serious complication of AV block. We report a case of complete AV block with QT prolongation who had bouts of TdP resistant to lidocaine and isoproterenol. Temporary pacing could not be performed, because insertion of a pacing lead triggered TdP that deteriorated into ventricular fibrillation. nicorandil, a potassium channel opener, shortened the QT interval and abolished TdP. This may suggest that potassium channel opening drugs are clinically effective against TdP associated with bradycardia-dependent QT prolongation.
- - - - - - - - - -
ranking = 0.6
keywords = block
(Clic here for more details about this article)

3/220. role of fetal echocardiography in the management of isolated fetal heart block with ventricular rate <55 bpm.

    Persistent bradycardia is an uncommon cardiac problem in fetuses but carries a high mortality in those with a ventricular rate <55 bpm. fetal heart block is one of the most common causes of persistent fetal bradycardia (PFB). An optimal method for assessing and monitoring cardiovascular compensation in the setting of PFB due to heart block has not been fully established. We report the application of two-dimensional and Doppler echocardiography in close monitoring of cardiac function and hemodynamics in a third-trimester fetus with a ventricular rate <55 bpm due to heart block, which assisted in successful management of the pregnancy to term. Hemodynamic and cardiac adaptive changes in compromised fetuses, particularly due to heart block, are discussed.
- - - - - - - - - -
ranking = 0.8
keywords = block
(Clic here for more details about this article)

4/220. Paroxysmal atrioventricular block induced during head-up tilt test.

    A 71-year-old female with vasovagal near-syncope suffered from paroxysmal second-degree AV block during Holter monitoring. AV block was easily reproduced during head-up tilt test. She was successfully treated with a dual chamber pacemaker. This treatment is unusual and the role of cardiac pacing in patients with vasovagal symptoms is reviewed.
- - - - - - - - - -
ranking = 0.6
keywords = block
(Clic here for more details about this article)

5/220. Coronary artery spasm induced by trigeminal nerve stimulation and vagal reflex during intracranial operation.

    This report describes a case of ventricular fibrillation resulting from coronary vasospasm during intracranial operation under general anesthesia. An autonomic response associated with the intracranial procedure caused a coronary spasm, which was worsened by alpha-agonists. nitroglycerin effectively resolved the coronary spasm and co-complications persisted.
- - - - - - - - - -
ranking = 0.0014379837908716
keywords = nerve
(Clic here for more details about this article)

6/220. Swallow syncope.

    Swallowing (or deglutition) syncope is an uncommon, vagally-mediated etiology for syncope that may be seen in children and adults. The mechanism of syncope involves afferent impulses from the upper gastrointestinal tract and efferent impulses to the heart that can produce a variety of bradyarrhythmias with atrioventricular block. Two cases of swallow syncope are reported, one associated with drinking a cold carbonated beverage, and the other precipitated by eating a large bolus of food (which we have termed "Vaso-Bagel" syncope). In evaluating patients with syncope, a history of a temporal relationship to eating or drinking should be sought. While changes in eating habits may be effective in some cases, permanent pacemaker placement is often indicated and is curative.
- - - - - - - - - -
ranking = 0.1
keywords = block
(Clic here for more details about this article)

7/220. bradycardia and asystole with the use of vagus nerve stimulation for the treatment of epilepsy: a rare complication of intraoperative device testing.

    PURPOSES: A 56-year-old man with mild mental retardation, right congenital hemiparesis, and refractory partial seizures was referred for vagus nerve stimulation (VNS). methods: Routine lead diagnostic testing during the surgical procedure (1.0 mA, 20 Hz, and 500 micros, for approximately 17 s) resulted, during the initial two stimulations, in a bradycardia of approximately 30 beats/min. A third attempt led to transient asystole that required atropine and brief cardiopulmonary resuscitation. RESULTS: The procedure was immediately terminated, the device removed, and the patient recovered completely. A postoperative cardiologic evaluation, including an ECG, 24-h Holter monitor, echocardiogram, and a tilt-table test, was normal. CONCLUSIONS: Possible mechanisms for the bradycardia/asystole include stimulation of cervical cardiac branches of the vagus nerve either by collateral current spread or directly by inadvertent placement of the electrodes on one of these branches; improper plugging of the electrodes into the pulse generator, resulting in erratic varying intensity of stimulation; reverse polarity; and idiosyncratic-type reaction in a hypersusceptible individual. The manufacturer reports the occurrence rate in approximately 3,500 implants for this intraoperative event to be approximately one in 875 cases or 0.1%.
- - - - - - - - - -
ranking = 0.0021569756863074
keywords = nerve
(Clic here for more details about this article)

8/220. Elicitation of the oculocardiac reflex during endoscopic forehead lift surgery.

    Elicitation of the oculocardiac reflex is a well-documented phenomenon encountered during ophthalmologic surgical procedures. Familiarity with and prompt recognition of this entity has significantly reduced the morbidity associated with it; however, potentially lethal arrhythmias and cardiac arrest still occur. We report elicitation of the reflex during manipulation of the supraorbital nerve during endoscopic forehead lift surgery. To our knowledge this is the first case of elicitation of the oculocardiac reflex reported during endoscopic forehead lift surgery.
- - - - - - - - - -
ranking = 0.00035949594771791
keywords = nerve
(Clic here for more details about this article)

9/220. bradycardia, reversible panconduction defect and syncope following self-medication with a homeopathic medicine.

    Alkaloid extracts from the plant aconitum species have been used in various forms of herbal remedies predominantly as anti-inflammatory and analgesic agents. Many of these alkaloids are extremely potent cardiotoxins and documented cases of various arrhythmias with fatal outcomes have been reported. We report a case of self-medication with 'tincture of aconite' resulting in severe bradycardia, reversible panconduction defect evidenced by sinus inactivity, atrioventricular dissociation with idiojunctional rhythm and left bundle branch block pattern resulting in hypotension and syncope. Complete reversal of ECG findings with marked improvement in symptoms was noted within a few hours. Herbal medicines containing aconite alkaloids may result in severe cardiotoxicity, and strict regulatory measures are warranted to curb unsupervised use for therapeutic purposes.
- - - - - - - - - -
ranking = 0.1
keywords = block
(Clic here for more details about this article)

10/220. Fetal presentation of congenital long qt syndrome.

    Thirty-two-week prenatal ultrasound revealed a fetal heart rate of 100 bpm with decreased variability on the heart rate tracing. Echocardiogram documented normal anatomy and sinus bradycardia. Newborn electrocardiogram revealed sinus rhythm at 100 bpm with a QTc of 0.657. Follow-up electrocardiogram revealed a QTc interval of 0.568, 2:1 atrioventricular block with a ventricular rate of 60 bpm, and ventricular ectopy. The infant received a pacemaker and beta-blocker therapy. long qt syndrome should be in the differential diagnosis of the fetus with bradycardia and decreased heart rate variability in the absence of distress. early diagnosis allowed for preventative care in the infant and identification of family members at risk.
- - - - - - - - - -
ranking = 0.2
keywords = block
(Clic here for more details about this article)
| Next ->


Leave a message about 'Bradycardia'


We do not evaluate or guarantee the accuracy of any content in this site. Click here for the full disclaimer.