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Query: UMLS:C0012833 (dizziness)
 9,689 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Alternative pharmacologic adjuncts are needed for the management of opiate abuse. Oxilorphan, a narcotic antagonist, was studied at 5 different dose levels (1, 2, 4, 6, and 8 mg) in 30 normal subjects to determine the relation of single oral doses and toxicity. The drug causes pupillary constriction and mild central nervous system side effects (nausea, dizziness) at all doses. Mean urine volume increased (P less than 0.05) during the 12 hours after 1 and 2 mg. Oxilorphan has partial agonist properties similar to dl-cyclazocine.
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PMID:Partial agonist properties and toxicity of oral oxilorphan. 0 72

1Labetalol is a new compound with antagonistic effects at both alpha- and beta-adrenoreceptor sites. 2 When given to 12 hypertensive patients at an average daily dosage of 273 mg for 7 months statistically significant reductions (compared with pretreatment values) in recumbent and standing blood pressure were observed. 3 Treatment has to be withdrawn in one patient because of vivid dreams, and dosage was reduced in one patient because of dizziness. Otherwise no side-effects of importance were noted. 4 It can therefore be concluded that labetalol offers a useful anti-hypertensive effect and that this compound is well tolerated.
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PMID:Labetalol, a new alpha- and beta-adrenoreceptor blocking agent, in hypertension. 1 Sep 52

Circulatory regulation in response to postural changes follows mechanical rules, whereby the shifts in volume in the various organs of the body play an essential role. The change from the horizontal to the vertical position is accompanied by a decrease in pressure above the hydrostatic neutral point, i.e. in the cephalic vessels, whereas the capacious vessels in the caudal region are dilated and the venous return becomes sluggish. As a consequence of the different time courses followed by the various circulatory parameters in the wake of counter-regulatory measures, a distinction can be made between an early orthostatic instant regulatory response and a late orthostatic response. Prominent clinical features do not necessarily always consist of non-systemic dizziness, tinnitus, pallor cold sweat and, finally, orthostatic collapse, but general subjective symptoms such as deafness and tingling of the extremities, a chilly sensation and cardiac symptoms may frequently predominante. In the case of development of an autonomic neurotic symptom complex, psychoautonomic symptoms such as general sleep disturbance are observed. Apart from investigations carried out on a surgical tilting table in general practice, other procedures such as the Valsalva manoeuvre, the squatting test and, in most cases, the erect test are performed. Broadly speaking four different reaction types can be distinguished amongst cases of postural hypotension. Drugs with different therapeutic actions are selectively administered according to the pathophysiological characteristics of the individual patient and the sympathetic adrenal counter-regulatory response. Medico-mechanical measures and physical training should not be neglected.
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PMID:[Postural hypotension: pathophysiology and clinical features (author's transl)]. 1 41

A double-blind random study compared lorazepam with diazepam as i.m. premedicants in 84 healthy women undergoing uterine curettage. Anxiety, assessed by a self-rating test by the patient and by a trained observer, was reduced 90 min after both lorazepam (P less than 0.001) and diazepam (P less than 0.01). There was more sedation and a longer recovery time after lorazepam than after diazepam. Amnesia at 24 h after operation (lack of recall rather than lack of recognition) was greater after lorazepam. There was transient local discomfort at the site of the injection in most patients in both groups, but no serious effects. Local erythema was present in 12 patients who received lorazepam and 10 who received diazepam 90 min after the injection, disappearing after 24 h in the former group but remaining in the latter. The incidence of nausea, vomiting and headache in both groups was small and similar, but there was more restlessness and dizziness after diazepam in the early recovery period.
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PMID:Comparison of lorazepam and diazepam as premedicants. 2 39

This paper reports the findings of an open evaluation of 100 patients treated with prazosin. When prazosin was added to existing hypotensive regimens in 50 patients whose blood pressure was poorly controlled, 36 (72 percent) became normotensive. Treatment was initiated with prazosin in a further 50 patients. Satisfactory control was achieved with prazosin alone in 24 and 20 of these became normotensive. The remaining 26 patients received in addition a beta-adrenoreceptor blocking agent together with a thiazide diuretic in 14. While prazosin alone caused a mean fall of 26/14mmHg in this group, the enchanced efficacy of combined therapy achieved a normal blood pressure in 19 (73 percent) and a total mean fall in pressure of 42/28mmHg. The most frequent side effect was dizziness or faintness at the start of therapy or, less often, when the dose was increased. This is minimised by using a low initial dose of 0.5mg two or three times daily. Prazosin is an effective hypotensive agent, used alone or in combination, in most patients with hypertension of all degrees of severity.
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PMID:Prazosin in hypertension. Part I. Clinical experience in 100 patients. 2 93

The efficacy of labetalol in lowering blood pressure was assessed in 18 patients with chronic renal failure and hypertension. Before the start of labetalol therapy, all patients were receiving combined antihypertensive therapy, the most common being a beta-blocker and hydrallazine. Over the period of about four weeks labetalol was substituted for the prior therapy. 51Cr edetic acid (EDTA) estimations of glomerular filtration rate were performed before labetalol therapy, and then again after one and six months. Before the therapy with labetalol, 12 of the 18 patients had supine diastolic blood pressures of 100 mm Hg or more. At six months, 14 patients remained in the trial and, of these, only four had a supine diastolic blood pressure of 100 mm Hg or more. In the supine position there was a significant reduction of systolic, but not of diastolic, blood pressure. However, in the erect position there was a significant reduction both in systolic and in diastolic blood presure. Pulse rate did not vary significantly. Few side effects were encountered, transient postural dizziness being the most common side effect. Labetalol seems to be an effective substitute for the beta-blocker plus hydrallazine therapy. However, it is not as potent as minoxidil.
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PMID:Labetalol in the treatment of hypertensive renal patients. 2 15

Following 4 weeks of treatment with ORF-8063 a polyfluorinated benzodiazepine derivative, 8 hospitalized patients manifesting a primary pathology of anxiety showed marked general improvement. 2 other persons were treated, but for shorter periods: 9 and 14 days. Both are included in the pre-post analysis. Mean optimal dosage was 66.5 mg. The five instruments used to measure therapeutic effect showed pre- to posttreatment change with high level of statistical significance in serveral of the pathological factors. When measures of change are considered, patients showed more improvement related to psychic than somatic components of anxiety. Change data also indicates more patients improvement in anxiety than depression. Side effects reported more were dizziness, faintness and insomnia; these were reported in 8 patients. 6 patients noted drowsiness, and 4 noted excitement. 5 persons tolerated optimum dosages with no extreme reactions; 5 others (including the 2 subjects who terminated treatment early) were unable to maintain optimum dosages because of side effects.
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PMID:The treatment of anxiety with a polyfluorinated benzodiazepine derivative. 2 34

In this multi-clinic double-blind study, patients suffering from insomnia were treated with triazolam 0.5 mg (Halcion) or placebo for 14 days. Four investigators treated 239 patients, 122 on triazolam and 117 on placebo. Thirty-nine patients, 10 on triazolam and 29 on placebo, dropped out for ineffectiveness of the medication and 32 patients, 16 in each group, dropped out for side effects. Analysis of pooled efficacy data showed that triazolam was significantly better than placebo on all efficacy parameters measured, including how much the medication helped the patients sleep, onset of sleep, duration of sleep, duration compared to usual, number of nocturnal awakenings, and feeling of restfulness in the morning. Triazolam did not produce evidence of tolerance development after 2 weeks of treatment. The same variety of side effects occurred on each treatment and primarily included drowsiness, grogginess, headaches, impaired coordination nausea, and dizziness.
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PMID:Multi-clinic double-blind comparison of triazolam (Halcion) and placebo administered for 14 consecutive nights in outpatients with insomnia. 2 13

Lormetazepam (0.5, 1, 2, 4, 8 mg)--a new benzodiazepine--was tested versus Pentobarbital (100 mg) under double blind conditions on 240 preoperative inpatients for night-time sedative and side effects after acute oral intake. Results are based on p less than 0.05. Additionally p less than 0.125 in binomial-two-sample-tests was accepted. Lormetazepam shows dose dependent increase in hypnotic effects (e.g. reduction in sleep latency and number of awakenings, increase of total sleep duration), and side effects (e.g. dopiness, dizziness), but no relevant change in vital signs. About 0.5 mg of Lormetazepam are equivalent to 100 mg of Pentobarbital. 2 mg of Lormetazepam seem to be the optimum dose regarding the relation between hypnotic and side effects. In the view of anaesthesists Lormetazepam is preferable to Pentobarbital because of more favorable safety aspects.
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PMID:[Lormetazepam in preoperative sleeplessness. Dose dependance of the effect and comparison with 100 mg pentobarbital (author's transl)]. 3 99

The clinical effects of oral flunitrazepam (2 mg on the night before operation followed by 2 mg on the morning of operation) and placebo as premedicants were tested in a double-blind study in 81 gynaecological patients. The separate or total concentrations of flunitrazepam and its demethylated metabolite in plasma (measured by gas chromatography) were correlated with the clinical effects of flunitrapam premedication, assessed both sugjectively and objectively. In most parameters tested (sleep on the night before operation, sedation, apprehension, headache, pulse rate), there was a positive, significant difference between the flunitrazepam group (n = 44) and the placebo group (n = 37). No significant difference was found between the two groups in emetic effect, excitement, systolic blood pressure increase, and vene-puncture, but the patients receiving flunitrazepam felt significantly more dizziness. The temperature of the left forefinger before, during and after the anaesthesia did not vary significantly between the two groups. There was no correlation between the plasma concentration of flunitrazepam and its demethylated metabolite (separate or total concentrations) and any of the parameters tested before induction of anaesthesia. Flunitrazepam is a new oral premedicant with prominent sedative and anxiolytic actions. When the drug is given as a sedative on the night before operation, followed by a second dose on the morning of operation, the beneficial effects last for at least 8 hours after the second dose.
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PMID:Flunitrazepam versus placebo premedication for minor surgery. 4 32


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