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Visitsuntorn N, Wichienwattanachai V, Vichyanond P, Kerdsomnuk S, Tuchinda M. Nebulized salbutamol (Asmasal) in Thai children with asthma: comparison of three doses. Asian Pac J Allergy Immunol 1994; 12:7-13. [PMID: 7872995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Eleven moderate-to-severe asthmatic children 5-11 years of age who were in stable condition were given (randomly, double-blind) nebulized salbutamol sulfate (Asmasal) inhalation therapy at doses of 0.1, 0.2 and 0.3 mg/kg body weight on separated days. All three doses of nebulized solution resulted in clinical improvement and improvement of lung function (FEV1, FVC, PEFR and FEF25-75%). A dose of 0.3 mg/kg produced greatest improvement and longest duration of improvement in FEV1 and PEFR, but the change was statistically significant only in PEFR at 60 minutes (p < 0.05). Five children experienced mild tremors. There were no significant changes in heart rate or blood pressure at any dose. It is concluded that a nebulized solution of salbutamol sulfate at a dose of 0.1-0.3 mg/kg is useful for treatment of asthma in Thai children, with very mild side effects.
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Affiliation(s)
- N Visitsuntorn
- Department of Pediatrics, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
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52
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Vichyanond P, Thakerngpol K, Susiva C, Chavalittamrong B. Ultrastructural defects of the ciliary epithelium in a child with Kartagener's syndrome. Asian Pac J Allergy Immunol 1993; 11:103-9. [PMID: 8080604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Kartagener's syndrome is a well known classical triad of presentations consisting of bronchiectasis, sinusitis and situs inversus. It is now recognized that the syndrome is an extreme presentation of primary ciliary dyskinesia, a large group of conditions with ultrastructural ciliary defects, leading to poor ciliary motility in various organ systems. A case of Kartagener's syndrome is presented in an eight year old Thai boy in whom the ultrastructural ciliary defects have been examined and described in detail for the first time in Thailand. Incomplete lack of dynein arms was recognized. In addition, disorientation of ciliary axis was noticed. Due to severe bronchiectatic changes of the right lower lobe and right lingular lobe which did not improve despite adequate antibiotics, these lobes were surgically removed. The child has done well since, but still suffers occasional and recurrent bouts of sinusitis.
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Affiliation(s)
- P Vichyanond
- Department of Pediatrics, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
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53
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Vichyanond P, Chokephaibulkit K, Kerdsomnuig S, Visitsuntorn N, Tuchinda M. Clinical evaluation of the "Siriraj Spacer" in asthmatic Thai children. Ann Allergy 1992; 69:433-8. [PMID: 1456485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
We designed a new, washable, and collapsible bag spacer (the Siriraj Spacer) for use with metered-dose inhalers (MDI) by Thai asthmatic patients. The Siriraj Spacer consists of a mouthpiece, a front panel to which any type of MDI could be attached and a collapsible 800 mL ringed-plastic bag. Fifteen asthmatic children (6-13 years of age) were enrolled into a randomized, double-blind, triple crossover study (spanning a period of three days) to compare the clinical effectiveness of the Siriraj Spacer with that of the Volumatic Spacer (Glaxo, Inc., Research Triangle Park, NC, U.S.A.) and with the use of MDI alone. Medication used with the active method of administration was 2 puffs of albuterol (100 micrograms/puff) while 2 puffs from placebo MDI were used with the other two methods in succession. All children were stable asthmatic patients, and had been instructed how to use MDI properly by an open mouth technique just before the initiation of the study. Spirometry (FEV1, FVC, PEFR, and FEF25-75%) was followed for six hours after the administration of albuterol. The baseline FEV1s of the three study days were within 50% to 70% of the predicted values (with baseline variability of less than 20%). Data were expressed as percentage of improvement from baseline. By an analysis of variance with repeated measures, no significant differences were observed between pulmonary function data obtained with any of the three methods of bronchodilator administration (P > .05) at any time point throughout the 6-hour period.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- P Vichyanond
- Department of Pediatrics, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand
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54
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Visitsuntorn N, Balankura K, Keorochana S, Habanananda S, Vichyanond P, Tuchinda M. Sinusitis in Thai asthmatic children. Asian Pac J Allergy Immunol 1992; 10:5-10. [PMID: 1418184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The radiographic appearance of sinuses was studied in 146 Thai asthmatic patients aged 1-13 years. Forty-eight percent of cases showed sinusitis by the radiographic criteria. The maxillary sinus was most commonly involved (98.6%). Thirty-three percent had ethmoidal sinusitis and 7% of those with developed frontal sinuses had frontal sinusitis. Thirty-three percent had more than one sinus involved. Those with frontal sinusitis always had maxillary and/or ethmoidal involvement. Sixteen cases had signs and symptoms of sinusitis and all of the cases had the radiographic appearance of sinusitis. There was no correlation between the occurrence of sinusitis and duration or severity of asthma. There was no difference in the occurrence of sinusitis between those with or without allergic rhinitis. No correlation between severity of sinusitis and age of patients was observed.
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Affiliation(s)
- N Visitsuntorn
- Department of Pediatrics, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand
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55
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Vichyanond P, Jongpanichkultorn S, Aranyanark N, Tuchinda M. Suppressive effects of histamine skin reactivity by a nonsedating antihistamine-mequitazine. Asian Pac J Allergy Immunol 1991; 9:141-6. [PMID: 1687238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The suppressive activity of mequitazine (MQZ) on histamine skin reactivity was evaluated in 29 healthy subjects (age 22-25 years) in a single-blind study. Fifteen subjects received MQZ, at a dosage of 5 mg BID, for 7 days while 14 served as controls. A prick skin test with saline or histamine hydrochloride (1 mg/ml and 10 mg/ml) was performed in duplicate, on both forearms, starting from the baseline day and continuing for 4 days after medication had been discontinued (total of 11 days). The skin-test subject and the reader was unaware of the randomization process. Mean diameters of wheal and flare as well as the skin index scores (after Voorhost) were used in the analysis. Maximal flare suppression (as compared to the baseline values) was observed on day 6 (97% suppression for 1 mg/ml and 54% suppression for 10 mg/ml, p less than 0.01). Suppression of wheal size was significant (19% for 1 mg/ml and 28% for 10 mg/ml) but was not clinically relevant. Suppression of skin index scores was maximal on day 6 (71% for 1 mg/ml and 43% for 10 mg/ml, p less than 0.01). After MQZ had been discontinued, all measurements gradually returned to baseline values and were not different therefrom within 3 days. However, final measurements of wheal and flare were smaller than baseline values (60-94% of baselines). We conclude that MQZ, at the manufacturers's recommended dose of 5 mg BID, significantly suppressed flare size of histamine skin tests and recommend that MQZ be discontinued for at least 3 days prior to performing allergy skin tests.
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Affiliation(s)
- P Vichyanond
- Department of Pediatrics, Faculty of Medicine Siriraj Hospital, Bangkok, Thailand
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56
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Greos LS, Vichyanond P, Bloedow DC, Irvin CG, Larsen GL, Szefler SJ, Hill MR. Methylprednisolone achieves greater concentrations in the lung than prednisolone. A pharmacokinetic analysis. Am Rev Respir Dis 1991; 144:586-92. [PMID: 1892299 DOI: 10.1164/ajrccm/144.3_pt_1.586] [Citation(s) in RCA: 57] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Previous studies in humans and rabbits demonstrated that methylprednisolone appears in the lung in greater concentration than prednisolone. To ascertain which pharmacokinetic properties of these drugs explain this difference, we gave methylprednisolone and prednisolone, 5 mg/kg intravenous bolus, to 23 adult rabbits. To measure the plasma concentration versus time curves for methylprednisolone and prednisolone, samples were obtained predose through 480 min postdose. To measure the bronchoalveolar lavage glucocorticoid concentration versus time curves, lavage was performed once per experiment at seven separate time points from 5 to 480 min post-dose (two to four experiments per time point). Bronchoalveolar lavage fluid (BALF) recovery ranged from 50 to 75% and was similar in both groups. Glucocorticoid concentration in plasma and BALF was determined by high performance liquid chromatography. To normalize for the dilutional effects of lavage, epithelial lining fluid (ELF) recovery was quantitated from BALF volume and BALF and plasma urea concentrations. Pharmacokinetic parameters of the two glucocorticoids were calculated both noncompartmentally and by a three-compartment model. The extrapolated plasma glucocorticoid concentrations at time zero of methylprednisolone and prednisolone are similar, but the volume of distribution and plasma half-life of methylprednisolone are significantly greater than those of prednisolone (p less than 0.05). Although the clearance of the two drugs are not significantly different, methylprednisolone appears to have a slower Cl than prednisolone. The mean residence time (the average time drug remained in body) was significantly longer for methylprednisolone than for prednisolone (p less than 0.05), and plasma glucocorticoid concentrations became significantly different in the two groups by 90 min (p less than 0.05).(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- L S Greos
- Ira J. and Jacqueline Neimark Laboratory of Clinical Pharmacology in Pediatrics, Department of Pediatrics, National Jewish Center for Immunology and Respiratory Medicine, Denver, CO 80206
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57
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Tuchinda M, Vichyanond P, Visitsuntorn N, Habananonda S. The role of disodium cromoglycate-metered dose aerosol inhaler in the management of asthma in Thai children. Asian Pac J Allergy Immunol 1990; 8:117-21. [PMID: 2128683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Metered dose aerosol inhaler of disodium cromoglycate (Intal) has been recently introduced to facilitate the ease of administration of the drug over its previous spincap formulation. We evaluated the efficacy of regular use of metered dose inhaler of disodium cromoglycate (DSCG-MDI) in the daily management of Thai asthmatic children. The study comprised nineteen children with the age range of 8-15 years (mean 11.6 years). During a two week baseline period, the patients recorded their baseline symptom scores, requirement of their asthma medications (medication scores) and their morning/evening peak flow (PEFR) readings. Thereafter, DSCG-MDI was prescribed at the dosage of two puffs (1 mg/puff) four times daily for eight weeks. Patients were examined at two week intervals at which daily score cards along with PEFR records were collected. Significant reduction in the medication scores and in the requirement for maintenance bronchodilators were noted (p less than 0.01) within two weeks of use of the DSCG-MDI. Morning and evening PEFR's increased significantly and this increase reached statistical significance at 4 weeks after the initiation of the treatment (p less than 0.01). No side effects were reported throughout the study; the aerosol was well tolerated. In this open study DSCG-MDI, at a dose of 1 mg four times daily, significantly improved asthma symptoms along with PEFR readings in Thai asthmatic children and reduced the need for concomitant asthma medications.
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Affiliation(s)
- M Tuchinda
- Department of Pediatrics, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
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Sur S, Mohiuddin AA, Vichyanond P, Nelson HS. A random double-blind trial of the combination of nebulized atropine methylnitrate and albuterol in nocturnal asthma. Ann Allergy 1990; 65:384-8. [PMID: 2244710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The combination of nebulized atropine methylnitrate (AMN) and a beta-agonist has been shown to produce greater and longer lasting bronchodilation than either drug alone. We examined the efficacy of the combination in diminishing the "morning dipping" in PEFR in eight hospitalized but stable asthmatics. The patients received nebulized albuterol along with either AMN (AMN + ALB) or placebo (ALB) in a random double-blind cross-over fashion at 10 PM on four nights. PEFR and FEV1 were recorded at 6 PM, 10 PM, and 6 AM before the administration of bronchodilators. There was no statistically significant difference between ALB and AMN + ALB in reducing the morning dipping in these patients.
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Affiliation(s)
- S Sur
- National Jewish Center for Immunology and Respiratory Medicine, Denver, Colorado
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59
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Vichyanond P, Sladek WA, Sur S, Hill MR, Szefler SJ, Nelson HS. Efficacy of atropine methylnitrate alone and in combination with albuterol in children with asthma. Chest 1990; 98:637-42. [PMID: 2203617 DOI: 10.1378/chest.98.3.637] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
The bronchodilator effect of nebulized AMN, albuterol and their combination was evaluated in 16 steroid-dependent asthmatic children. In phase 1, maximal bronchodilation was determined by dose-response studies on separate days. Maximal bronchodilator dose of each drug was administered either alone or in combination during phase 2. In phase 1, 0.11 +/- 0.01 mg/kg of albuterol and 0.03 mg/kg of AMN produced maximum bronchodilation. In phase 2, the peak response to albuterol occurred within 30 min and to AMN, at 60 min. Maximal FEV1 achieved after AMN was 90 percent of the maximal achieved after albuterol. AMN FEV1 response was better than for placebo for 3 h; that for albuterol was better for 4 h. Combination therapy produced a peak response similar to that of albuterol but was better than albuterol by 6 h. Thus, the maximum bronchodilator effect of AMN is less than that of albuterol in asthmatic children, but the combination may extend the period of bronchodilatation.
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Affiliation(s)
- P Vichyanond
- National Jewish Center for Immunology and Respiratory Medicine, Denver
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60
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Vichyanond P. IgE regulation and the control of allergic diseases. Asian Pac J Allergy Immunol 1990; 8:1-4. [PMID: 2393449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- P Vichyanond
- Department of Pediatrics Faculty of Medicine, Siriraj Hospital Mahidol University, Bangkok, Thailand
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61
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Vichyanond P, Visitsuntorn N, Tuchinda M. Wheat-induced anaphylaxis. Asian Pac J Allergy Immunol 1990; 8:49-52. [PMID: 2393451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
A 13 year old boy suffered two separate episodes of severe anaphylaxis after consuming sandwiches and a piece of bread. Prick skin testings with available food allergens only revealed a positive reaction to a 1:10 w/v of wheat flour extract. A diagnosis of wheat-induced anaphylaxis was made and a double blind food challenge was suggested however was declined by the family. The patient was instructed to avoid all wheat containing foods and to carry a kit containing an epinephrine pre-loaded syringe and an antihistamine tablet to be used in the event of inadvertant consumption with an instruction to seek medical assistance as soon as possible. Thus far, no further recurrence of anaphylaxis was encountered. A review of the current literature discloses that wheat-induced anaphylaxis is an uncommon event and could occur either immediately after the ingestion or with a concomitant exercise. The natural history of wheat allergy is currently not fully understood but may possibly be a life long event.
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Affiliation(s)
- P Vichyanond
- Department of Pediatrics, Faculty of Medicine Siriraj Hospital, Mahidol University, Bangkok, Thailand
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62
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Vichyanond P, Irvin CG, Larsen GL, Szefler SJ, Hill MR. Penetration of corticosteroids into the lung: evidence for a difference between methylprednisolone and prednisolone. J Allergy Clin Immunol 1989; 84:867-73. [PMID: 2600321 DOI: 10.1016/0091-6749(89)90381-3] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Little is known about the penetration of corticosteroids, such as methylprednisolone and prednisolone, into the lung, despite their common use in the treatment of inflammatory lung diseases. To compare methylprednisolone and prednisolone concentrations in the bronchoalveolar space, we administered these two corticosteroids in a randomized, crossover fashion to 17 adult rabbits. A loading dose was administered and was followed by a continuous infusion for 180 minutes to achieve steady-state plasma concentrations between 200 to 2000 ng/ml. Serial plasma samples were obtained during the infusions. Bronchoalveolar lavages (BAL) were performed at 180 minutes with sterile saline. Plasma and BAL fluid (BALF) were assayed for methylprednisolone and prednisolone concentration by high-performance liquid chromatography. Corticosteroid concentrations were normalized to urea concentrations in plasma and BALF. Generally, BALF corticosteroid concentration increased as plasma concentration increased. At plasma concentrations greater than 800 ng/ml, BALF methylprednisolone concentrations increased exponentially, whereas the increase for prednisolone remained linear. BALF methylprednisolone was five times as high as that of prednisolone when plasma corticosteroid concentration was in the 2000 ng/ml range. With this continuous infusion technique, methylprednisolone has a higher degree of bronchoalveolar penetration than prednisolone, and these differences are greater at higher plasma concentrations.
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Affiliation(s)
- P Vichyanond
- Ira J. and Jacqueline Neimark Laboratory of Clinical Pharmacology in Pediatrics, Department of Pediatrics, National Jewish Center for Immunology and Respiratory Medicine, Denver, CO 80206
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63
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Abstract
Previous investigations of the circadian variation in skin reactivity suggested that results of skin tests obtained in the afternoon could vary from the results obtained in the early morning and therefore could result in a differing assessment of patient sensitivity. To determine whether this was a practical concern in the normal clinical setting, we studied 20 adults and 20 children who had skin prick tests positive (3+ or more) to short ragweed. These patients were skin tested in duplicate at 8 AM and at 4 PM with fivefold serial dilutions of short ragweed extracts (1:20 to 1:12,500, wt/vol) and of histamine hydrochloride (10 to 0.016 mg/ml). Areas of wheal and flare were recorded and measured by computed planimetry. In addition, results were also read according to a conventional scoring system. Mean wheal and erythema areas with ragweed and histamine at each dilution were compared between morning and their corresponding evening values. Although there was a trend for the morning means to be larger than evening means, no significant differences between the two sessions were observed at any dilution. Mean morning skin index scores, as calculated from the combined mean wheal and erythema areas, were larger than mean evening scores for ragweed and histamine, but the differences were not of a degree to be clinically important. This observation was also true for conventional scores. Comparing the results from the two groups of children who had their first set of skin tests performed either in the morning or afternoon session indicated that there was no evidence of a refractory state of the skin during the second test sessions.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- P Vichyanond
- National Jewish Center for Immunology and Respiratory Medicine, Denver, Colo 80206
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Abstract
We report the results of eye culture specimens, obtained from patients under 20 years of age, submitted to the Bacteriology Department of our institution from January 1 through April 30, 1983. A total of 72 specimens were positive for one or more strains of bacteria. The most commonly isolated bacteria was Hemophilus influenzae (34 strains, 42%), followed by Staphylococcus epidermidis (11 strains, 13.75%) and Streptococcus pneumoniae (9 strains, 11.25%). Mean age of patients with H. influenzae (excluding a 20-year-old patient) was 15 months with standard deviation of 13 months. Chloramphenicol and tetracycline showed excellent in vitro activity against bacteria of all age groups. Tetracycline may prove to be the drug of choice for the treatment of acute conjunctivitis if comparative clinical data support its in vitro superiority.
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Vichyanond P. Transient AP elevation in children. Kans Med 1985; 86:326, 331. [PMID: 4079206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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66
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Vichyanond P, Olson LC. Pertussis outbreak in SE Kansas--1983-84. Kans Med 1985; 86:52-4, 62. [PMID: 3981853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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67
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Abstract
Three children had staphylococcal infections of the CNS. In two cases the organisms were resistant to methicillin sodium. Each case was treated with a combination of vancomycin hydrochloride and rifampin; in one instance vancomycin alone had been unsuccessful. The addition of rifampin resulted in prompt clinical and bacteriologic resolution. Satisfactory levels of rifampin were achieved by administering the drug either orally or intravenously, and in one patient oral administration of rifampin produced assayed levels in subdural pus many times that required for minimal bactericidal activity. Combination therapy with vancomycin and rifampin is recommended for staphylococcal infections of the CNS.
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Vichyanond P, Howard CP, Olson LC. Eikenella corrodens as a cause of thyroid abscess. Am J Dis Child 1983; 137:971-3. [PMID: 6351591 DOI: 10.1001/archpedi.1983.02140360035012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Acute suppurative thyroiditis in children is rarely reported. It is generally associated with upper respiratory tract infections and is manifest as an acute febrile illness with swelling of the thyroid gland. Diagnosis is established by aspiration of the affected area, and cultures for both aerobic and anaerobic bacteria should be carried out. Therapy is based on drainage of the abscess and treatment with specific antimicrobial drugs, as determined by culture results. We describe a 3 1/2-year-old girl with a thyroid abscess from whom Eikenella corrodens, in addition to mixed flora, was recovered. No disturbance in thyroid function was observed. We review the pathogenesis of acute bacterial infections of the thyroid gland and the literature regarding the specific cause of these infections.
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