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

Intracavernous papaverine injection is often used in the diagnosis and treatment of male impotence. Prolonged erection and/or priapism are well known local complications. Systemic side-effects characterized by discomfort and dizziness due to rapid escape of the drug into the vascular circulation also can occur in patients with venous leakage. Thus, venous leakage should be ruled out prior to intracavernous injection of papaverine in the treatment of impotence. Ligation of the deep dorsal vein and the small veins around the tunica albuginea will lessen the problem.
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PMID:Systemic complication of intracavernous papaverine injection in patients with venous leakage. 334 Oct 94

In patients with portal hypertension and tense ascites, large-volume paracentesis improves patient comfort and may improve systemic hemodynamics. However, it has been avoided in nonedematous patients because of concern for complications, including intravascular volume depletion. In this study, 12 nonedematous patients with chronic liver disease, portal hypertension and tense ascites underwent 14 large-volume (5-liter) paracenteses for the relief of discomfort and/or respiratory distress. Plasma volume was measured directly by a dilution method with 125I-labeled human serum albumin prior to and at 24 or 48 hr after 13 of the paracenteses. All patients felt better postparacentesis. No dizziness, hypotension, tachycardia, encephalopathy or change in mean serum sodium, creatinine or blood urea nitrogen occurred. Two patients experienced a decrease in hematocrit, which was not explained by blood loss or increase in plasma volume. Mean plasma volume was 3,713 +/- 129 ml (55.1 +/- 1.5 ml per kg ideal body weight) preparacentesis and 3,684 +/- 136 ml postparacentesis, the difference being -0.78% (p = 0.48, NS). Our results suggest that 5-liter paracentesis in nonedematous patients with tense portal hypertension-related ascites improves patient comfort and is not associated with a decrease in measured plasma volume.
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PMID:Large-volume paracentesis in nonedematous patients with tense ascites: its effect on intravascular volume. 335

The efficacy, tolerance and acceptability of a single i.m. injection of 50 mg bromocriptine retard (in polylactic acid microspheres), given within 12 h after delivery for suppression of lactation, were investigated in 47 mothers not willing to breast-feed. Slight to moderate breast discomfort was noticed during the first postpartum days in 23% of the patients but lactation was indeed prevented in all cases and no rebound lactation occurred in any case. Only six patients exhibited at least two symptoms of mammary engorgement (congestion and pain or milk let-down): in this group, blood mean PRL levels were significantly less suppressed on postpartum days 2, 6, 21 and 28 (p less than 0.05 to p less than 0.001) than in the group of mothers completely free of any mammary symptoms. Slight side-effects (mostly dizziness), as mentioned at systematic request, were recorded in 34% of the patients; only 3 patients required treatment for their side-effects. Recovery of ovarian function was evident quite early (by day 28 in 72% of the patients), thus requiring early onset of contraception.
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PMID:Inhibition of puerperal lactation by means of a single injection of bromocriptine retard. 359 74

Despite much recent research, there is still little systematic information about the phenomenology of panic attacks, and their possible causes remain obscure. We investigated panic attacks in the natural environment using an event sampling approach. Twenty-seven panic attack patients and 19 matched normal controls kept panic attack and self-exposure diaries for 6 days and wore an ambulatory heart rate/physical activity recorder for 3 days. Patients reported 175 attacks, generally of moderate severity. The most frequent symptoms were palpitations, dizziness/lightheadedness, dyspnea, nausea, sweating, and chest pain/discomfort. The results did not support the classification of panic attacks recently proposed by Sheehan and Sheehan, which requires three symptoms as a cutoff for panic attacks. Panic attacks classified by the patients as situational (i.e., occurring in feared situations) were more severe and occurred in situational contexts different from spontaneous attacks, but were otherwise phenomenologically similar. Heart rates did not change during spontaneous attacks and were only mildly elevated during situational attacks or during the 15 minutes preceding these attacks. These heart rate changes were interpretable as effects of anxiety, although physical activity showed a similar pattern of changes. Some normal control subjects reported on the panic diary primarily situational anxiety episodes that were phenomenologically similar to, albeit less severe than, the patients' episodes. Panic patients may sometimes fail to perceive environmental triggers for their attacks because many attacks classified as spontaneous occurred in classical "phobic" situations. Furthermore, the comparison of concurrent diary and retrospective interview and questionnaire descriptions showed that panic patients have a tendency toward retrospective exaggeration. Implications for the assessment, definition, and classification of panic attacks are discussed.
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PMID:Panic attacks in the natural environment. 365 82

The management of patients with cerebral transient ischemic attacks and carotid artery stenosis remains controversial. Noninvasive techniques help to determine which patients require surgical intervention without exposing the majority of patients to the risk and discomfort of invasive procedures. Measurement of ophthalmic artery pressure by ophthalmodynamometry or oculoplethysmography gives a representation of perfusion pressure in the internal carotid artery circulation. Doppler ultrasound studies can define the extent of obstruction to flow at the carotid artery bifurcation and assess collateral flow from the external carotid artery. Real time B-mode ultrasonography can detect nonobstructive ulcerated plaque in the carotid artery bifurcation. Employing these examinations in a test battery can identify hemodynamically significant lesions, which are more likely to precipitate a stroke. The information obtained from these studies can be utilized in patients with episodes of cerebral transient ischemic attacks, asymptomatic carotid artery bruits and vertebrobasilar insufficiency. Noninvasive carotid artery testing is also useful in screening patients with nonspecific symptoms, such as dizziness or light-headedness, which may be related to decreased flow in the carotid circulation. Noninvasive carotid artery testing can provide valuable anatomic and physiologic information required in the appropriate management of patients with cerebrovascular disease. It is of particular value in managing patients with heart disease who are at high risk for complications from invasive procedures.
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PMID:Clinical applications of noninvasive carotid artery testing. 388 May 66

Ten healthy normal volunteers received an intravenous infusion of erythromycin lactobionate over 60 min to a total dose of 800 mg (n = 9), and 524 mg (n = 1). Blood samples were collected at 10 min intervals for 100 min and gastric contents aspirated, via a nasogastric tube, from pre-dose to 105 min after start of infusion. Incidence and severity of three gastrointestinal symptoms (nausea, stomach discomfort and feelings of hunger), two CNS symptoms (dizziness and faintness) and a 'control' symptom (back pain) were measured using 100 mm visual analogue scales. Rate of infusion and plasma erythromycin concentration correlated with nausea (P less than 0.001) and stomach discomfort (P less than 0.001); plasma erythromycin concentration was also correlated with dizziness (P less than 0.05). Concentrations of active erythromycin in the aspirate were pH dependent. In one subject the concentration of erythromycin in the aspirate exceeded that in the plasma by 100 fold. Bile staining of samples containing the highest levels of microbiologically active erythromycin makes the origin of the erythromycin in these samples uncertain.
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PMID:Gastrointestinal side effects after intravenous erythromycin lactobionate. 396 30

The purpose of the present study was to investigate the effects on driving ability of the new analgesic ethyl-N-(2-amino-6-(4-fluor-phenylmethylamino) pyridin-3-yl) carbamate (flupirtine, D 9998) in comparison with pentazocine and placebo. Flupirtine was tested in a double blind cross-over experiment in 12 healthy volunteers using 7 different tests which are known to correspond to the most important aspects of driving ability. Subjects were given 3 consecutive doses of flupirtine of 100 mg each and tested following the first and third administration. The comparison drug pentazocine and placebo were administered in the same dosage regimen (a single dose of pentazocine amounting to 50 mg). Significant differences between flupirtine and placebo could not be detected. Following single dosage of pentazocine subjects more often reported a general feeling of discomfort, including nausea, dizziness and motion sickness, than was the case after administration of flupirtine. While single administration of pentazocine did not produce any significant differences from placebo, multiple administration resulted in both objective and subjective fatigue symptoms. It was concluded that flupirtine, in contrast to pentazocine, did not produce any impairment in driving ability in healthy volunteers.
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PMID:[The effect of the analgesic flupirtine on automobile driving]. 403 55

Twenty six patients (aged 46-80, mean age 64) with bifascicular block in the presence of prolonged H-V interval (trifascicular block), were followed for an average of 31 months after inserting an R-wave inhibited pacemaker (PM) because of syncope and/or dizzy attacks. The underlying rhythm was evaluated at 4-6-month intervals by three different techniques: 1) 12-lead ECG when intrinsic patient rate was faster than PM rate; 2) abrupt PM inhibition (APMI) by the rapid chest-wall stimulation technique, and 3) progressive PM inhibition (PPMI) using a programmed chest-wall stimulation technique capable of decreasing the PM rate gradually to 30 beats/min before complete PM inhibition. In addition, the PPMI allowed the underlying rhythm to be induced and sustained and properly evaluated without any discomfort to the patient. Following PM insertion, 4 patients (15%) developed complete heart block after a mean follow-up of 43 months, and one patient (4%) developed 2nd degree 2:1 A-V block (VX) after 83 months. The P-R interval increased in 5 patients (19%) and decreased in 2 (8%). No change of A-V conduction was found in 9 patients (34%). Three patients developed low atrial rhythm, atrial flutter and atrial fibrillation, respectively (12%). After PM insertion 2 patients still complained of dizziness. None reported syncope. Two patients died during follow-up, both of congestive heart failure (8%). By detection of intrinsic rhythm it was recognized that a long symptomatic paroxysmal phase may precede the development of chronic complete A-V block. Therefore, the insertion of a permanent PM is recommended in patients with unexplained neurologic symptoms and trifascicular disease, without waiting for documented episodes of complete A-V block.
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PMID:Programmed chest-wall stimulation to evaluate the progress of A-V block after pacemaker insertion in patients with trifascicular disease. 618 36

The effect of 25 mg histamine, 25 mg tyramine and 5 mg phenylethylamine resp. in apple juice on 27 healthy volunteers was studied using a randomized placebo-controlled double-blind procedure. No statistically significant effect was found with histamine and tyramine, but phenylethylamine produced symptoms like headache, dizziness and discomfort in some volunteers. In a second experiment the effect of four different wines (2 dl) containing naturally several biogenic amines in various amounts (histamine n.d. - 21 ppm; tyramine 1-23 ppm; phenylethylamine n.d. - 6 ppm; putrescine 2-55 ppm) on 20 volunteers was recorded. The percentage of volunteers experiencing symptoms was of the same order of magnitude as in the first experiment. No correlation was found to exist in this second experiment between the occurrence of symptoms and the concentration of biogenic amines in the wine samples.
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PMID:[Biogenic amines in food: effects of histamine, tyramine and phenylethylamine in the human]. 636 21

Side effects of carbamazepine (CBZ), valproate (VPA) and clonazepam (CZP) are rare during long-term use but rather common and usually transient during the early phases of treatment. The usual side effects of CBZ are drowsiness, dizziness, and diplopia, which are dose dependent in long-term use, but CBZ does not seem to cause cognitive disturbances, as do phenobarbital and phenytoin. Other reactions to CBZ may include leukopenia, hyponatremia, disturbances of vitamin D metabolism and fortunately rarely, agranulocytosis and hepatitis. Use of VPA can lead to gastrointestinal discomfort, weight gain, hair loss, tremor and sedation, but these side effects are rather uncommon, mild, and transient during VPA monotherapy. Potentially hazardous reactions such as hepatitis and pancreatitis have occurred in a few patients on VPA, generally with multidrug therapy. Some of the side effects are dose related. They infrequently lead to withdrawal of VPA. Side effects limited to initiation of CZP therapy include drowsiness, ataxia, and behavioral changes; they are usually transient but can lead to dose reduction or even withdrawal of the drug. Except for development of tolerance, CZP seems to be practically free of long-term side effects.
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PMID:Side effects of carbamazepine, valproate and clonazepam during long-term treatment of epilepsy. 642 98


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