Gene/Protein Disease Symptom Drug Enzyme Compound
Pivot Concepts:   Target Concepts:
Query: UMLS:C0012833 (dizziness)
 9,689 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Panic disorder is relatively common in older patients and may have serious consequences. The diagnosis is based on an accurate history of symptom onset and intensity. Symptoms include shortness of breath, dizziness, increased heart rate, trembling, and sweating. Effective treatment can be achieved with several kinds of medication, including benzodiazepines. Although physician and patient fears about benzodiazepines persist, panic-disordered patients with no history of drug abuse rarely develop substance dependence problems. Physical dependence occurs in a minority of patients and can be minimized by a slow tapering schedule. As with most medications, benzodiazepines need to be used with caution in older patients, who are more susceptible to adverse effects.
 ...
PMID:Panic disorder: guidelines to safe use of benzodiazepines. 810 Jul 94

A total of 44 patients referred for Tc-99m MIBI myocardial imaging for detection of coronary artery disease (CAD) were studied to compare the differences in heart beat, blood pressure, electrocardiographic changes and side effects during intravenous infusion of dipyridamole (ID) and adenosine (IA) and also to determine the degree of concordance between ID and IA Tc-99m MIBI imaging. These patients were divided into two groups: 20 suspected CAD patients constituted group I and 24 proven CAD patients formed group II. All patients received ID 0.56 mg/kg for 4 min and within about 10 days IA 0.14 microgram/kg/min for 6 min with Tc-99m MIBI imaging. The results revealed that maximal heart beat increased and maximal systolic blood pressure decreased in both IA and ID patients with no statistically significant differences. Transient second-degree AV block occurred with IA in 3 patients. Side effects, such as, chest pain, headache, dizziness and shortness of breath occurred more often and were in general more intense in IA patients, but they were typically mild and resolved spontaneously within 1 or 2 min of discontinuation of IA. Both IA and ID Tc-99m MIBI imaging were normal in 18 of 20 group I patients and were concordant for the presence of perfusion defects in the other 2 patients. Of 24 group II patients, all had myocardial perfusion defects on both tests and were concordant for the severity of the perfusion abnormalities. However, in other 2 patients. Of 24 group II patients, all had myocardial perfusion defects on both tests and were concordant for the severity of the perfusion abnormalities.(ABSTRACT TRUNCATED AT 250 WORDS)
 ...
PMID:Comparison of intravenous dipyridamole and adenosine Tc-99m MIBI myocardial imaging for detection of coronary artery disease. 817 73

Occasionally, a dental patient presents his/her dentist with a history of hypersensitivity to local anesthetic agents. The symptoms may include immediate reactions to the injection procedure (dizziness, shortness of breath, tachycardia, etc), or delayed reactions to the anesthetic (swelling, urticaria, etc). Although the true incidence of local anesthetic allergy is low, such a history often involves the patient's anxiety regarding the use of the drug in question, and the dentist's apprehension to treat the "problematic" patient. In such cases, hypnosis can play a major role in controlling pain and the associated distress. In the present article, the method concerning the implementation of hypnosis to induce local anesthesia is described and illustrated through case demonstrations.
 ...
PMID:When pharmacologic anesthesia is precluded: the value of hypnosis as a sole anesthetic agent in dentistry. 836 35

Atrial fibrillation is most the common sustained arrhythmia seen by the cardiologist. Therapy to prevent this arrhythmia is often prescribed so as to eliminate associated symptoms which include palpitations, fatigue, dizziness and presyncope, shortness of breath, congestive heart failure and emboli, especially those that result in a cerebrovascular accident. Pharmacologic therapy is the only effective therapy for preventing atrial fibrillation and the class 1 antiarrhythmic drugs remain the most frequently used agents. Although each of these agents has been reported to be effective for preventing atrial fibrillation, they are associated with frequent side effects, some of which are potentially serious, especially aggravation of arrhythmia. Prior to treatment the benefit vs risk of these drugs for each patient must be established.
 ...
PMID:Class 1 antiarrhythmic agents for therapy of atrial fibrillation. 845 55

Individuals with panic attacks evaluate physical anxiety symptoms as dangerous and tend to respond to them with fear. In a retrospective questionnaire study, we explored childhood and adolescent learning experiences with respect to somatic symptoms of panickers. Compared to normal controls (N = 61), patients with panic disorder (N = 121), infrequent panickers (N = 86) and patients with other anxiety disorders (N = 38) reported more frequent instances prior to age 18 when they had experienced symptoms like dizziness, shortness of breath, palpitations or nausea, accompanied by special attention from their parents and instructions to restrain from strenuous or social activities. The differences were due to higher symptom frequencies in the anxiety groups. All anxiety groups reported more frequent uncontrolled behavior of their parents than controls. Patients with panic disorder and infrequent panickers reported that their parents had suffered more frequently from physical symptoms typical of anxiety than patients with other anxiety disorders or normal controls. Panickers, but not patients with other anxiety disorders, had observed sick-role behavior related to panic symptoms in their parents more often than controls. Panic attack Ss reported a higher number of household members suffering from chronic illnesses than controls and patients with other anxiety disorders. No group differences were found in the reported behavior of parents when Ss had colds. Overall, the results point to the role of severe illnesses and physical symptoms typical of anxiety in significant others in the history of Ss with panic attacks. These experiences during childhood and adolescence may contribute to their belief that physical symptoms are dangerous. In contrast, there was no specificity for panic with respect to the Ss' own physical symptoms or cold-related symptoms.
 ...
PMID:Somatic symptoms and panic attacks: a retrospective study of learning experiences. 847 1

A 77-year-old male patient presented with symptoms of shortness of breath, fatigue, chest pain on exertion and dizziness. Transthoracic echocardiography suggested the presence of a diaphragmatic type of obstruction in the subaortic area of the left ventricular outflow tract. The systolic peak gradient at rest was 34 mmHg with a mean of 23 mmHg. Cardiac catheterization demonstrated rounded radiolucencies in the left ventricular outflow tract in the form of two "pouches" that moved back and forth causing subaortic stenosis. There was also a 70% stenosis of the left anterior descending coronary artery. Left ventricular function was normal. At surgery, a transesophageal echocardiogram demonstrated two distinct pouches arising from the anterior leaflet of the mitral valve. The larger of the two originated near the free edge of the leaflet and was attached via a chord to the membranous septum traversing the subaortic area of the left ventricular outflow tract. The patient underwent a left internal mammary to left anterior descending bypass graft, excision of the larger pouch and over-sewing of the smaller pouch. The excision and repair were performed through the aortic root and aortic valve. The patient made an uncomplicated recovery and on follow up his symptoms disappeared. This case shows the excellent results that can be obtained by surgery of diverticula of the mitral valve causing intermittent subaortic stenosis, a rare pathologic entity, morphologically different from the classical diaphragmatic subaortic stenosis.
 ...
PMID:"Diverticula" of anterior mitral valve leaflet as a cause of subvalvular aortic stenosis. 879 82

The sensitizing potency of formaldehyde and phenol exposure during 4 weeks of an anatomy dissection course was assessed in 45 medical students. Specific IgE against formaldehyde by RAST and by ELISA and specific IgE against phenol by ELISA were assessed before and after the course. At the start of the course, symptoms, type I allergy, respiratory diseases, and smoking habits were noted. At the end of the course, only symptoms experienced during the dissection lessons were assessed. Indoor formaldehyde levels were measured continuously. The mean indoor formaldehyde level was 0.124 +/- 0.05 ppm, with a minimum of 0.059 ppm and a maximum of 0.219 ppm. Specific IgE against formaldehyde or phenol was found in none of the subjects at the beginning of the course, and no student showed specific IgE against formaldehyde or phenol after the course. Assessment of primarily irritant symptoms during the lesson revealed itch and paraesthesia of hands in 33/45 students (P < 0.00005), headache in 15/45 students, burning eyes in 13/45 students (P < 0.02), dizziness in 8/45 students (P < 0.008), sneezing in 4/45 students, epistaxis in 2/45 students, and shortness of breath in 1/45 students. According to our data, 1-month exposure to formaldehyde and phenol during an anatomy dissection course does not induce specific IgE against formaldehyde or phenol.
 ...
PMID:Formaldehyde and phenol exposure during an anatomy dissection course: a possible source of IgE-mediated sensitization? 894 43

Chest pain is a common complaint among children of all ages. It rarely is due to cardiac disease, but deserves careful evaluation for this possibility, with laboratory tests performed in limited cases. The child who has pain of acute onset that interferes with sleep, is precipitated by exercise, or is associated with dizziness, palpitations, syncope, or shortness of breath should be evaluated with the aid of laboratory tests. This includes at least a chest radiograph and electrocardiogram. Also, pain in the child who has a history of coin ingestion, trauma, previous cardiac disease, or conditions that put him or her at risk for developing cardiac pathology deserve further study. Likewise, those who have a history of conditions such as asthma, Marfan syndrome, or sickle cell disease warrant special consideration. Finally, most of those who have an abnormal physical examination (fever, respiratory distress, abnormal breath sounds, cardiac murmur, abnormal rhythm or heart sounds, palpable subcutaneous air, or obvious trauma) also require a chest radiograph and an electrocardiogram. However, the child who has chronic chest pain normal physical examination with no worrisome history needs reassurance and careful follow-up rather than extensive studies.
 ...
PMID:Consultation with the specialist. Chest pain in children. 911 17

The purposes of this study were to describe: clinical symptoms in a sample of consecutive patients with supraventricular tachycardia (SVT); incidence of sudden death, syncope, and other disabling symptoms; whether these symptoms differ by tachycardia mechanism; and to identify predictor variables of syncope in patients with SVT. Data were collected from chart reviews of 167 consecutive patients with SVT admitted for radiofrequency ablation. Three patients (2%) had nonlethal cardiac arrest, and a total of 16% (26 of 183) received at least 1 external direct-current shock for arrhythmia management. Twenty percent of subjects (33 of 167) reported at least 1 episode of syncope which was preceded by palpitations. The most frequent symptoms were: palpitations (96%), dizziness (75%), and shortness of breath (47%). We found atrioventricular nodal reentrant tachycardia (AVNRT) in 64 patients, atrioventricular-reciprocating tachycardia (AVRT) in 59, atrial tachycardia in 22, and atrial flutter in 22. The symptom profiles of patients with AVNRT, AVRT, and atrial tachycardia were very similar, but differed significantly (p <0.05) from those reported in the atrial flutter group. Multivariate analysis showed that heart rate > or = 170 beats/min was the only independent risk factor for syncope. Chi-square analysis demonstrated that SVT patients with heart rate > or = 170 beats/min had significantly more dizziness and syncope. Thus, despite a low incidence of associated heart disease, and good left ventricular function, there was a high frequency of disabling, potentially life-threatening symptoms associated with episodes of SVT in this sample. SVT can have potentially lethal consequences, and is more disruptive than previously thought.
 ...
PMID:Frequency of disabling symptoms in supraventricular tachycardia. 919 13

To date, the quantitative psychopathology of panic disorder (PD) has been less well studied than that of other psychiatric conditions such as schizophrenia or major depression. The aim of the present study was to assess the frequency and factorial grouping of symptoms in a naturalistic sample of PD patients. A total of 274 consecutive cases of PD who contacted an out-patient clinic in Barcelona, Spain were assessed by two experienced interviewers. The assessment instruments included the Structured Clinical Interview for DSM-III-R Upjohn version (SCID-UP-R) and an inventory of panic attack symptoms based on DSM-III-R. Of the patients who presented at the unit during the assessment period, 8.5% presented with PD. Palpitations, shortness of breath, fear of dying and dizziness were the most frequent and intense symptoms reported by the PD patients. Principal-component analysis revealed four factors which accounted for 57% of the variance, including 'cardiorespiratory' (26.1%) and 'vestibular' (15.1%) factors, and two additional factors with mixed symptoms. The frequency of presentation of symptoms was similar to that reported in other studies. However, some discrepancies were observed that may be attributed to transcultural differences as well as to terminological problems and the range of symptoms assessed. These factors may also explain some of the differences found in factor analysis groupings in previous studies. Our findings support the symptom subtyping of PD.
 ...
PMID:Semiology and subtyping of panic disorders. 957 Apr 87


<< Previous 1 2 3 4 5 6 7 8 9 10 Next >>