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Enhanced Vagal Tone


Presentation

  • A 56 year old male presents to the emergency department with chest pains, nausea and vomiting. His temperature is 37.2, blood pressure 110/70, heart rate 50, respirations 20, and oxygen saturation normal on room air.[healio.com]
  • Wenckebach (type 1) 2nd-degree atrioventricular block, occasionally present at rest, characteristically resolves with exercise. Ectopic atrial and junctional rhythms may occur.[afpafitness.com]
  • The information it contains is presented for general educational use only and is independent from the products itself.[dantest.com]
  • Conclusion: Athletes present a vexing problem to clinicians. Telling the difference between normal adaptations and disease is challenging, especially since emerging data suggests that for some individuals, an upper limit of exercise clearly exists .[drjohnm.org]
  • “We were surprised to find that when the drug was present in the brain, it also blocked inflammation in the spleen and in other organs in the rest of the body.[blog.bulletproof.com]
Tachycardia
  • METHODS AND RESULTS: This study included 10 patients with typical, slow-fast AV nodal reentrant tachycardia (AVNRT) and 10 patients with AV reciprocating tachycardia.[ncbi.nlm.nih.gov]
  • I also have tachycardia EVERY morning now, even on the beta blocker.[medhelp.org]
  • For example, hyperthyroidism induces tachycardia and hypothyroidism induces bradycardia . Circulating epinephrine causes tachycardia by a mechanism similar to norepinephrine released by sympathetic nerves. 3.[cvphysiology.com]
  • This will then decrease the blood pressure, and hence produce a reflex tachycardia as explained above. KETAMINE causes stimulation of the sympathetic nervous system, and therefore produces a tachycardia.[afpafitness.com]
  • Tachycardias in inferior MI It is relatively uncommon.Atrial involvement is more common with infero posterior MI and hence a greater incidence of atrial fibrillation .[drsvenkatesan.com]
Hypotension
  • Hypotension, or low blood pressure , is associated with increased nervous system activation and increased heart rate, but one type, hypovolemic hypotension, occurring after hemorrhage or certain drugs, induces a decrease in heart rate.[healthcentral.com]
  • The moment infero posterior MI occur it stimualtes the vagus and a prompt bradycardic response occur .Many times the classical hypotension /bradycardia reaction is simply a reflection of heightened vagal tone.[drsvenkatesan.com]
  • While atropine can be used to temporarily relieve the vagal hypertonicity, our patient is doing fine with no symptoms of bradycardia (which would be related to hypotension such as dizziness or syncope).[healio.com]
  • […] target HR 50-70, SPB 110 x 7 days postop) Increased right atrial pressure (inspiration) causes increased heart rate (afferent inhibition of parasympathetic nervous system) Bezold-Jarisch reflex 1) Triad 2) Mechanism 3) Stimuli 1) Apnea, bradycardia, hypotension[quizlet.com]
  • MAIN OUTCOME MEASURE: The number of syncopes/presyncopes (orthostatic hypotension, tachypnoea, increased sweating) during interventions.[easystand.com]
Increased Sweating
  • MAIN OUTCOME MEASURE: The number of syncopes/presyncopes (orthostatic hypotension, tachypnoea, increased sweating) during interventions.[easystand.com]
Stroke
  • The pulse pressure may decrease due to a lower stroke volume and decreased time for diastolic run-off.[afpafitness.com]
  • This causes a mild rise in stroke volume. 2) Reduced venous return and compensation: Return of systemic blood to the heart is impeded by the pressure inside the chest. The output of the heart is reduced and stroke volume falls.[quizlet.com]
  • […] this type of stress with increased vagal tone or an activated parasympathetic nervous system better than others. (1) Research shows that a high vagal tone makes your body better at regulating blood glucose levels, reducing the likelihood of diabetes, stroke[lifespa.com]
  • “We’d injected an anti-inflammatory drug into the brain because we were studying the beneficial effect of blocking inflammation during a stroke,” he recalls.[blog.bulletproof.com]
  • Studies show that they can better regulate their blood glucose levels, reducing incidence of diabetes, stroke and cardiovascular disease.[technologist.eu]

Workup

Sinus Arrest
  • arrest洞停止 sinus bradycardia洞性徐脈 sinus node洞結節 sinus of Valsalvaバ[ヴァ]ルサルバ[ヴァ]洞 sinus rhythm洞調律 sinus tachycardia洞性頻脈 situs inversus逆位 situs solitus正位 sleep apnea syndrome睡眠時無呼吸症候群 sphygmomanometer血圧計 ST depressionST下降 ST elevationST上昇 stable angina 安定性狭心症[tokyo-med.ac.jp]
Premature Atrial Contractions
  • atrial contraction (against closed tricuspid valve), 3rd degree heart block 3) Atrial fibrillation Cause of wave changes in JVP waveform: 1) Large v wave 2) Slow y descent 1) Tricuspid regurgitation 2) Tricuspid stenosis 1) Persantine (dipyridamole)[quizlet.com]

Treatment

  • A new chapter on Brugada Syndrome (Chapter 27) teaches early identification and treatment of those at risk of sudden death from this dangerous ECG pattern.[books.google.com]
  • Treatment In most instances, hypotension and fainting are relatively benign. If you feel all right, you do not have to do anything. Treatment depends on the initiating mechanisms.[healthcentral.com]
  • Digoxin is indicated in the treatment of atrial fibrillation, atrial flutter and heart failure (currently it is not a first line treatment).[pharmacologycorner.com]
  • 1) 350-500 bpm 2) 60-170 bpm 3) Acute treatment: beta blocker, diltiazem, synchronized cardioversion; Chronic treatment: anticoagulation, ablation, flecanide, amiodarone Preventative treatment for post operative atrial fibrillation Preoperative beta[quizlet.com]
  • Understanding the causes of interpersonal disturbance within the disorder is, thus, important for developing treatments that can help ameliorate the misery defined by BPD.[grantome.com]

Prognosis

  • Prevalence and prognosis of exercise-induced nonsustained ventricular tachycardia in apparently healthy volunteers. Am J Cardiol. 1984 Oct 1;54(7):762-4. [24]-Atwal S, Porter J, MacDonald P.[afpafitness.com]
  • […] emission tomography (PET)ポジトロン放射計断層撮影[法] potential(1)潜在性 【形】 (2)電位 precordial pain前胸[部]痛 preload前負荷 premature beat期外収縮 premature ventricular contraction心室期外収縮 pressure overload圧負荷 prevalence有病率、頻度 primary一次、原発[性] 【形】 proarrhythmia催不整脈 procedure 手技、手順、処置方法 prognosis[tokyo-med.ac.jp]

Etiology

  • The etiology of complete heart-block. Br Med K 1963; 2:1149.[acls.com]

Pathophysiology

  • From: Principles of Pharmacology: The Pathophysiologic Basis of Drug Therapy, 2nd edition. D.Golan Digoxin Digoxin is a selective inhibitor of the plasma membrane sodium pump.[pharmacologycorner.com]
  • […] clinical significance 2) QRS 0.12 seconds; RSR' in V5-V6; implies CAD, HTN, LVH Causes of pericardial tamponade Trauma Infection Perforation of ventricle Special conditions (collagen disease, renal failure) ("TIPS") Pulsus paradoxus: 1) Definition 2) Pathophysiology[quizlet.com]

Prevention

  • This knowledge can be used to develop prevention and treatment efforts that target these specific processes. Public Health Relevance Borderline personality disorder (BPD) is a severe and debilitating psychiatric disorder.[grantome.com]
  • […] sometimes genetic counsellors Types of therapy for hypotonia There are several types of therapy for hypotonia, these include physiotherapy, occupational therapy and so forth. (1-4) Physiotherapy Regular physiotherapy is important to improve muscle tone and prevent[news-medical.net]
  • Aldosterone stimulation of the sodium pump may lead to perivascular fibrosis that experimentally may be prevented by digoxin administration Therapeutic doses of digoxin have a predominantly parasympathomimetic action on atrial myocardium , slowing conduction[forums.studentdoctor.net]
  • Khalsa, PhD , assistant professor in the Division of Sleep Medicine at Brigham and Women’s Hospital, supports a study to investigate whether Kripalu Yoga prevents or diminishes high school students’ use of illicit substances.[kripalu.org]
  • Stimulating the vagus nerve has relieved trigeminal nerve pain and migraine and cluster headaches and prevented acute kidney injury.[townsendletter.com]

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