Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0015672 (fatigue)
 51,768 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Theophylline increases the heart rate in patients with normal sinus rhythm and in patients with sick sinus syndrome. This effect is probably connected to the blockade of adenosine receptors by theophylline. This study evaluated the efficacy of theophylline in 34 elderly patients with symptomatic sinus bradycardia (age 68 +/- 11 years). A resting electrocardiogram, a 24-hour recording and treadmill test were performed both before and after administration of slow-release theophylline (700 mg/day). The drug increased resting heart rate (from 43 +/- 6 to 63 +/- 16 beats/min, p < 0.01), mean 24 hour heart rate (from 49 +/- 7 to 65 +/- 17 beats/min, p < 0.01), and minimal 24 hour heart rate (from 34 +/- 5 to 44 +/- 10 beats/min, p < 0.05 ). Cardiac pauses longer than 2.5 seconds were present in 8 patients during control recordings, and disappeared after theophylline. Twenty-six patients were followed for a period of 20 +/- 5 months. Suppression of symptoms was achieved in 24 of them. Asthenia and easy fatigue were reduced markedly by the drug. During long term therapy, the sinus rate was similar to that observed at the steady-state evaluation. In 6 of the 34 patients theophylline had to be discontinued because of gastric intolerance (in 4 cases at the end of the steady-state evaluation and in 2 during long-term therapy). These data suggest that oral theophylline can represent an effective therapy in some elderly patients with symptomatic sinus bradycardia and can avoid or delay the need of a permanent pacemaker.
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PMID:Clinical effects of oral theophylline in elderly patients with sick sinus syndrome. 1865 35

Bradyarrhythmia (bradycardia) is a heart rate lower than 60 beats/min. It can be due to sinus, atrial, or junctional bradycardia or to a problem with the conduction system (eg, an atrioventricular block). Asymptomatic bradycardia is common, especially among trained athletes or during sleep. Bradycardia symptoms can include syncope, dizziness, chest pain, dyspnea, or fatigue. It is important to determine during the evaluation if bradycardia is the cause of the patient's symptoms. In the acute setting, symptomatic patients should be treated with atropine. Percutaneous pacing can be used as a bridge to definitive treatment. The only therapy for persistent bradycardia is placement of a permanent pacemaker. Symptomatic patients with sick sinus syndrome and high second- or third-degree atrioventricular blocks require placement of permanent pacemakers.
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PMID:Cardiovascular Disease Update: Bradyarrhythmias. 2826 24

Our first case is an 84-year-old female diagnosed with sick sinus syndrome. She underwent implantation of dual chamber permanent pacemaker without complications. On the 8th day status-postimplantation, she returned to the emergency department (ED) with moderately severe left anterior chest pain and significant ecchymosis. She was given an initial diagnosis of shingles and discharged. Two days later, she returned to the ED with increasing chest pain, dyspnea, nausea, and vomiting. Lead migration and cardiac perforation was confirmed by chest X-ray and computed tomography (CT), respectively. She was taken to the operating room (OR) for lead repositioning, and she was discharged the next day. Our second case is a 64-year-old female with a diagnosis of 2:1 high-grade third-degree atrioventricular block. A dual chamber permanent pacemaker system was implanted without initial complication. Five days after implantation, she presented to the ED following an episode of syncope due to hypotension (67/46), shortness of breath, left flank pain, and fatigue. The initial diagnosis was sepsis. A chest CT was obtained, noting lead perforation and hemothorax. The patient was taken to the OR for lead repositioning.
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PMID:Delayed pacemaker lead perforations: Why unusual presentations should prompt an early multidisciplinary team approach. 2838 60

Sick sinus syndrome (SSS) is a dysfunction of sinoatrial node resulting in symptomatic bradycardia or sinus pauses causing decreased cardiac output with cerebral hypoperfusion and usually presents as syncope, presyncope or fatigue. The occurrence of a seizure is very rare. A 69-year-old man suffered two episodes of generalised tonic-clonic seizures. MRI and electroencephalogram failed to reveal the cause of seizures. In the emergency room, he experienced presyncope simultaneous to bradycardia and sinus pauses. He was stabilised with atropine and dopamine infusion and underwent definitive therapy with a permanent dual-chamber pacemaker with complete symptom resolution. Diagnostic confounders include convulsive syncope and ictal bradycardia. Syncope may be accompanied by myoclonic jerks (convulsive syncope), but postictal confusion is absent. Bradycardia may be seen during the postictal period (ictal bradycardia syndrome), but protracted sinus dysfunction is not present. Hypoperfusion due to significant SSS triggered seizures in this patient who may have an underlying predisposition.
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PMID:Seizure Triggered by Sick Sinus Syndrome. 2910 11

A 58-year-old woman complained of general fatigue and was diagnosed with sick sinus syndrome (SSS) by ambulatory electrocardiogram, which demonstrated sinus arrest at midnight and paroxysmal atrial fibrillation (AF) at nighttime. Since her plasma cholinesterase (ChE) activity had been persistently zero, she was diagnosed with ChE deficiency. She refused permanent pacemaker implantation, and treatment with positive chronotropic drugs is ongoing. A novel association of ChE deficiency with SSS is theoretically possible rather than coincident, considering that ChE plays a key role in cholinergic influences on the sinus node leading to sinus bradyarrhythmia and on the atria, causing vagally mediated AF.
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PMID:Sick Sinus Syndrome Observed in a Patient with Cholinesterase Deficiency. 3044 82

Sick sinus syndrome (SSS) is an abnormality of sinus nodal impulse formation by intrinsic or extrinsic causes. Patients with SSS often are asymptomatic, or have mild or nonspecific symptoms, including dizziness, palpitations, fatigue, and confusion related to the decreased cardiac output. SSS can rarely cause conditions like syncope, congestive heart failure, thromboembolism, pulmonary edema, cardiac arrest, or sudden death. We report here on a severe bradycardia during general anesthesia for aneurysmal clipping and tachycardia-bradycardia syndrome followed by cardiac arrest postoperatively in the ICU, which was subsequently diagnosed as SSS with 24-hour Holter monitoring.
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PMID:Cardiopulmonary arrest due to sick sinus syndrome: A case report. 3062 29

Mahuang Fuzi Xixin Decoction recorded in Treatise on Febrile Diseases by Zhang Zhongjing in the Han Dynasty have been widely used in treating Yang deficiency and exogenous wind-cold syndrome by traditional Chinese medicine physicians for thousands of years. The indications of Mahuang Fuzi Xixin Decoction include bradyarrhythmia,sinus bradycardia,sick sinus node syndrome,senile exogenous,asthmatic cold,rhinitis,bronchial asthma,optic neuritis,optic atrophy,sudden blindness,sudden onset of cough,laryngeal obstruction,migraine,joint pain,low back pain,insomnia,shock,heart failure,renal failure,accompanied by fever or nosocomial infection,and hyperpyrexia after tracheotomy; dark complexion,chills,cold limbs,listlessness,fatigue,insomnia,lack of thirst,liking hot drinks,slightly swollen limbs or whole body,pale fat tongue,greasy fur,and deep pulse. Mahuang Fuzi Xixin Decoction is a potential drug for Shaoyin disease complicated with fever and pain. Tracheal intubation is an artificial ephedrine syndrome. It is necessary to distinguish Yin and Yang syndrome in treating hyperpyrexia after tracheotomy. However,it belongs to Yin syndrome,which could be treated by Mahuang Fuzi Xixin Decoction. Mahuang Fuzi Xixin Decoction is effective in the treatment of sick sinus syndrome,second degree atrioventricular block and third degree atrioventricular block. It can significantly alleviate symptoms,improve heart rate,and heart rhythm in a short period of time. However,after one year of drug withdrawal,the diseases may recur,indicating that Mahuang Fuzi Xixin Decoction may not improve the long-term prognosis of slow arrhythmia. Mahuang Fuzi Xixin Decoction is often used for fever or nosocomial infection in critical care medicine. In the treatment of critical care medicine complicated with high fever,Mahuang Fuzi Xixin Decoction is often taken continuously by stomach tube.
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PMID:[Exploration of Mahuang Fuzi Xixin Decoction formula syndromes based on severe cases of critical care and its application for nosocomial infection in critical care medicine including hyperpyrexia after tracheotomy and severe pain accompanied by acute myocardial infarction and diabetic peripheral neuropathy]. 3187 17


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