Guía dietética para pacientes con hiperuricemia y gota agar / Dietary guide for patients with hyperuricaemia and drop agar

Gota proviene del latin Gutta es un término acuñado en el siglo V que significa exceso o derrame de flema por exceso de vino, comida y sexo. Llamada "Rey de las enfermedades yenfermedad de reyes" fue uno de los primeros desordenes reumáticos en ser reconocidos como entidad clínic a. Es la artritis por deposito de microcri s tales más común debida a desequilibrio en el metabolismo de las purinas que conlleva a hiperuricemia y el depósito de cristales de urato monosódico, caracterizada por ser de inicio monoarticular, que a fecta con mayor frecuencia la primera articulación metatarso de pie y que progresa en su forma crónica a poliarticular, asociada a destrucción progresiva y a la formación de tofos, falla renal y enfermedad cardiovascular. Predomina sexo masculino, su pr evalencia se calcula de 0.08% a nivel mundial, aumentando la frecuencia de sus ataques con el alto contenido de carnes, mariscos, cervezas y bebidas espirituosas. El objetivo de la presente revisión bibliográfica es proporcionar una guía dietética para lo s médicos enfatizando y destacando su contenido de purinas en alimentos de uso cotidiano en la población guatemalteca, para obtener un mejor control de la artritis gotosa y disminuir la frecuencia de sus ataques ...(AU)

Gota comes from Latin Gutta is a term coined in the fifth century that means excess or spill of phlegm for excess wine, food and sex. Called "King of diseases and disease of kings" was one of the first rheumatic disorders to be recognized as a clinical entity. Arthritis is the most common microcritical deposit due to imbalance in the metabolism of purines that leads to hyperuricemia and the deposition of monosodium urate crystals, characterized by monoarticular initiation, which most often occurs with the first metatarsal joint. standing up and progressing in its form chronic to polyarticular, associated with progressive destruction and the formation of tophi, renal failure and cardiovascular disease. Male sex predominates, its pr evance is estimated at 0.08% worldwide, increasing the frequency of its attacks with the high content of meats, seafood, beers and spirits. The aim of this bibliographical review is to provide a dietary guide for physicians emphasizing and highlighting their content of purines in foods of daily use in the Guatemalan population, to obtain a better control of gouty arthritis and to reduce the frequency of their attacks. .. (AU)

Sequential, non-arteritic anterior ischemic optic neuropathy in patients taking sildenafil: a report of ten cases

To present a summary of 10 cases of non-arteritic anterior ischemic optic neuropathy [NAION] in patients who received phosphodiesterase type 5 [PDE-5] inhibitors. A case series of 10 patients who, after regular intake of Sildenafil, presented with a first episode of NAION in one eye. NAION was diagnosed based on the following criteria: acute, painless, unilateral loss of vision, fundus features consistent with NAION and exclusion of other possible causes. Despite the initial adverse event [first episode of NAION], all of these patients continued to use the medication and developed a second episode of NAION in the contralateral eye. Only one of the 10 patients presented with bilateral simultaneous NAION. This largest case series published to date, reinforces the general consensus that PDE-5 inhibitors are contraindicated in patients with a history of unilateral NAION.

Effect of sildenafil citrate on behavior and excitatory and inhibitory amino acids levels in albino rat's brain

Sildenafil is an active cGMP-specific phosphodiesterase type 5 inhibitor that is effective in the treatment of male erectile dysfunction. None of the previous studies have measured sildenafil or its possibly related neurochemical changes, but mainly they related their finding to sildenafil associated behavior changes. In this work, behavioral and brain neurochemical changes [excitatory and inhibitory neurotransmitters] associated with acute administration of sildenafil using male albino rats were investigated. Rats were divided into three groups [n=6]; group1 received saline [1ml/kg], group 2 received single doses of sildenafil [1.5mg/kg], while group 3 received single doses of sildenafil [100mg/kg]. Administration was via the intraperitoneal route. Behavior scores using EPM and brain homogenate for neurotransmitters evaluation by HPLC were carried out 60min after administration. Sildenafil did not produce any changes in behavior using the EPM test; also it did not alter the brain levels of excitatory, inhibitory and dopamine. Sildenafil produced dose dependent decreases in plasma dopamine level by mechanism[s] needs more neurochemical investigation. The chronic effect of sildenafil should be taken into consideration.

Systematic Review and Meta-Analysis of Pulmonary Hypertension Specific Therapy for Exercise Capacity in Chronic Obstructive Pulmonary Disease

Some patients with chronic obstructive pulmonary disease (COPD) have pulmonary hypertension (PH) that adversely affects survival. We performed a systematic review and meta-analysis to assess whether PH-specific therapies have an effect for stable COPD. Data sources were Medline, EMBASE, Cochrane Central Register of Controlled Trials, Korea med and references from relevant publications. Randomized prospective trials that compared PH specific therapy in COPD for more than 6 weeks with placebo were included. The outcomes were the exercise capacity and adverse events. Four randomized controlled trials involving 109 subjects were included in the analysis. Two trials involved bosentan, one sildenafil and one beraprost. The studies varied in duration of treatment from 3 to 18 months. In a pooled analysis of four trials, exercise-capacity was not significantly improved with PH-specific treatment for COPD (risk ratio, -5.1; 95% CI, -13.0 to 2.8). COPD with overt PH significantly improved the exercise capacity (mean difference, 111.6; 95% CI, 63.3 to 159.9) but COPD with PH unknown did not (mean difference, 26.6; 95% CI, -24.3 to 77.5). There was no significant difference in hypoxemia (mean difference, 2.6; 95% CI, -3.7 to 8.8). PH specific treatments have a significant effect in improving exercise capacity in COPD with overt PH.

Evaluation the effect of sildenafil citrate [sc or viagra] on senile albino rat testis [histological and biochemical study]

Sildenafil citrate [SC or Viagra] is an oral medication widely used to treat erectile dysfunction and maintains a sufficient erection for satisfactory sexual performance. The side effects of sildenafil citrate have been reported. The present study was designed to investigate the effect of sildenafil citrate in the therapeutic dose in different regimes. This study included forty senile male albino rats divided into four equal groups. Group [A] was used as a control group [did not receive any treatment]. Group [B] receive the therapeutic dose of Viagra [1.5 mg suspended in 1.5 ml distilled water] orally using a gastric gavage as daily dose for one week. Group [C] received the therapeutic dose of Viagra 3 times / week for two weeks. Group [D] received the therapeutic dose of Viagra each week for 4 weeks. Half of the treated rats of the different groups were sacrificed, other half were sacrificed after two weeks from the last dose as recovery groups [RB, RC and RD]. The testes were dissected and blocked in paraffin. Hematoxylin and Eosin [HX and E] and Periodic acid Schiff stain [PAS] were applied and serum testosterone levels in the different groups were evaluated. The present study showed that the therapeutic dose of sildenafil caused several histological findings in the germinal epithelial of the rat testes including degeneration, detachment of the spermatogenic cells especially the primary spermatocytes with addition thickening of the basement membranes of the seminiferous tubules and increased interstitial Leydig cells. The serum testosterone of the treated rats showed increased level of testosterone especially in group D. The recovery rats showed relative improvement of parameter toward normal. Sildenafil produce morphological and histological alterations in the testes

Sildenafil improves six-minute walk distance in chronic obstructive pulmonary disease: A randomised, double-blind, placebo-controlled trial.

Background. Sildenafil has been found to improve exercise capacity and haemodynamic parameters in patients with various pulmonary disorders. This study was undertaken to evaluate its efficacy in severe chronic obstructive pulmonary disease (COPD). Methods. In this double-blind, randomised, placebo-controlled study, 37 patients with severe COPD received either sildenafil or placebo for 12 weeks. Distance covered in six-minute walk test (6MWD) was taken as primary end-point. Pulmonary artery pressure (PAP) was measured as secondary end point. Results. Thirty-three patients (15 in sildenafil arm and 18 in placebo arm) completed the study. Non-parametric tests were used for comparison. There was significant increase in 6MWD from baseline after three months of follow-up in sildenafil users (median change in distance covered in six-minute walk test (Δ6MWD)=190m) as compared to placebo users (Δ6MWD=0m, p< 0.05). The PAP decreased significantly (χ2=14.94, p<0.05) in sildenafil group after three months, while it did not change significantly among placebo group (χ 2=3.84, p>0.05). Conclusion. Sildenafil improved 6MWD and PAP in patients with severe COPD. This trial has been registered with Indian Council of Medical Research (ICMR) Trial Registry. [CTRI Registry Number: CTRI/ 2009/091/000017]

Effects of sildenafil on autonomic nervous function during sleep in obstructive sleep apnea

OBJECTIVE: To evaluate the effects of sildenafil on the autonomic nervous system in patients with severe obstructive sleep apnea. METHODS: Thirteen male patients with severe obstructive sleep apnea (mean age 43±10 years with a mean body mass index of 26.7±1.9 kg/m²) received a single 50-mg dose of sildenafil or a placebo at bedtime. All-night polysomnography and heart rate variability were recorded. Frequency domain analysis of heart rate variability was performed for the central five-minute sample of the longest uninterrupted interval of slow wave and rapid eye movement sleep, as well as for one-minute samples during apnea and during slow wave and rapid eye movement sleep after resumption of respiration. RESULTS: Compared to the placebo, sildenafil was associated with an increase in the normalized high-frequency (HFnu) components and a decrease in the low/high-frequency components of the heart rate variability ratio (LF/HF) in slow wave sleep (p<0.01 for both). Differences in heart rate variability parameters between one-minute post-apnea and apnea samples (Δ= difference between resumption of respiration and apnea) were assessed. A trend toward a decreasing magnitude of ΔLF activity was observed during rapid eye movement sleep with sildenafil in comparison to placebo (p=0.046). Additionally, Δ LF/HF in SWS and rapid eye movement sleep was correlated with mean desaturation (sR= -0.72 and -0.51, respectively, p= 0.01 for both), and Δ HFnu in rapid eye movement sleep was correlated with mean desaturation (sR= 0.66, p= 0.02) and the desaturation index (sR= 0.58, p = 0.047). CONCLUSIONS: The decrease in arousal response to apnea/hypopnea events along with the increase in HFnu components and decrease in LH/HF components of the heart rate variability ratio during slow wave sleep suggest that, in addition to worsening sleep apnea, sildenafil has potentially immediate cardiac effects in patients with severe obstructive sleep apnea.

Central retinal vein occlusion in a patient after being commenced on sildenafil citrate for pulmonary arterial hypertension.

A 75-year-old female was commenced on sildenafil for the treatment of pulmonary arterial hypertension (PAH) secondary to chronic obstructive pulmonary disease (COPD). She reported blurring of vision within 72 hours after starting treatment and was found to have a central retinal vein occlusion (CRVO). Such an occurrence is the second case reported to date, and we review the possible mechanisms and literature on the subject.

Recurrent haemoptysis following sildenafil administration.

Sildenafil is widely used in the treatment of male erectile disorder and is generally well-tolerated. Its adverse effects are reported to be mild and include flushing, headache, dyspepsia and visual disturbances. We document a case of recurrent haemoptysis observed soon after self administration of sildenafil in a 38-year-old male with no other causative factors. The episodes of haemoptysis stopped following stoppage of sildenafil.

Subarachnoid haemorrhage: possibly caused by the illegitimate use of sildenafil citrate.

Sildenafil (Viagra) has been developed as a drug to treat male impotence. It has also been used to reduce symptoms (e.g. improved exercise capacity) in patients with pulmonary arterial hypertension. A case of subarachnoid haemorrhage (SAH) following the illicit use of sildenafil is reported.

Sildenafil citrate and Torsade de pointes

Sildenafil citrate is a drug used in the treatment of erectile dysfunction. It is an inhibitor of the enzyme phosphordiesterase-5; it slows down the breakdown of c-GMP and nitrous oxide. The cardiac effects associated with Sildenafil citrate have been extensively studied in medical literature, especially its potent vasodilatory effect when combined with nitrate-based medications, producing intractable hypotension, but a lesser known and potentially lethal side effect is prolonged cardiac repolarization when used at dosage greater than recommended, leading to QT prolongation that could theoretically lead to dangerous cardiac dysrrhythmias and sudden death in men with coronary artery disease. The authors present the case of a 49-year-old hypertensive Hispanic man who arrived to our emergency department with the chief complaint of acute epigastric pain for 3 hours of evolution after ingestion of Sildenafil citrate 50 milligrams (mg). The patient was found to have an acute ST elevation inferior myocardial infarction (STEMI). Shortly after diagnosis the patient developed a polymorphic ventricular tachycardia (Torsade de pointes) before thrombolytic administration. We present this case followed by a brief discussion, to heighten awareness of the possible association of acute inferior STEMI and the development of Torsade de Pointes after the use of Sildenafil citrate.

Efficacy and safety of sildenafil in Asian males with erectile dysfunction and cardiovascular risk.

OBJECTIVE: Assess the effectiveness of sildenafil in Asian males with erectile dysfunction (ED) and one or more of the co-morbidities, mild-to-moderate hypertension, dyslipidemia, and diabetes. MATERIAL AND METHOD: A six-week, double-blind, randomized, placebo-controlled, multicenter study was carried out in Thailand, Malaysia and Singapore. One hundred and fifty five male subjects were randomized (2:1) to sildenafil (n = 104) or placebo (n = 51). Sildenafil was started at 50 mg and increased (100 mg) or decreased (25 mg) at week 2 if necessary. RESULTS: On the primary efficacy endpoint, sildenafil-treated subjects had significantly better scores on the International Index of Erectile Function (IIEF) questions 3 and 4 than placebo (p < 0.001, both questions). When accumulated into IIEF domains, all five domains were significant in favor of sildenafil. In addition, sildenafil-treated subjects were more satisfied with treatment and had a higher intercourse success rate. The majority of adverse events were mild in severity; the most commonly reported treatment-related events were dizziness (7.7%) and tinnitus (2.9%). CONCLUSION: Sildenafil (25, 50, and 100 mg) was found to be an effective, safe, and well-tolerated treatment for ED in the present study population of Thai, Malaysian, and Singaporean males who also had increased cardiovascular risk

Inhaled iloprost for severe persistent pulmonary hypertension of the newborn.

The authors report one case of persistent pulmonary hypertension that had hypoxia although receiving treatment with high frequency oscillation, inotropic drugs, blood transfusion, and oral sildenafil for pulmonary vasodilatation. The patient developed hypotension after two doses of oral sildenafil and no response to high dose of inotropic drugs. So aerosolized iloprost was given via endotracheal tube and oxygen saturation improved within 10 minutes. Oxygen was weaned at 36 hours after treatment with this drug and no any side effect was found.