Voice in chronic renal failure

Real-world evidence and optimization of vocal dysfunction in end-stage renal disease patients with secondary hyperparathyroidism

Patients with end-stage renal disease (ESRD) may demonstrate secondary hyperparathyroidism (SHPT), characterized by parathyroid hormone oversecretion in response to electrolyte imbalance (e.g., hypocalcemia and hyperphosphatemia). Moreover, this electrolyte imbalance may affect vocal cord muscle contraction and lead to voice change. Here, we explored the effects of SHPT on the voices of patients with ESRD. We used data of 147,026 patients with ESRD from the registry for catastrophic illness patients, a sub-database of Taiwan National Health Insurance Research Database. We divided these patients into 2 groups based on whether they had hyperparathyroidism (HPT) and compared vocal dysfunction (VD) incidence among them. We also prospectively included 60 ESRD patients with SHPT; 45 of them underwent parathyroidectomy. Preoperatively and postoperatively, voice analysis was used to investigate changes in vocal parameters. In the real-world database analysis, the presence of HPT significantly increased VD incidence in patients with ESRD (p = 0.003): Cox regression analysis results indicated that patients with ESRD had an approximately 1.6-fold increased VD risk (p = 0.003). In the clinical analysis, the “jitter” and “shimmer” factors improved significantly after operation, whereas the aerodynamic factors remained unchanged. In conclusion, SHPT was an independent risk factor for VD in patients with ESRD, mainly affecting their acoustic factors.

Otorhinolaryngologic, head and neck presentations among patients with chronic renal disease in a developing country

Background:

Data on otorhinolaryngology and head and neck diseases in patient with chronic renal disease are rare in developing African countries. This study was aimed to determine the epidemiology and management of otorhinolaryngology and head and neck diseases among chronic renal disease patient seen in our tertiary health-care facility.

Materials and Methods:

This was a prospective, hospital-based study that was conducted in the ear, nose, and throat department in a Nigerian University Teaching Hospital. Informed consent was obtained, and pretested interviewers-assisted questionnaires were administered to each patient. Otoscopy, indirect laryngoscopy, and rhinoscopy were carried out. Renal functions were assessed by routine urine analysis and biochemical tests. Audiological tests were carried out for hearing assessment. Data collected were collated and analyzed using the SPSS software version 20.0.

Results:

The prevalence of chronic renal disease in otorhinolaryngology practice was 1.1%. There were 67.9% male with a male-to-female ratio of 2.1:1. The duration of illness was more than 1 year in 39.6% of our patients. The most common presentation was 58.5% tinnitus, 34.0% neck pain, 28.3% nasal blockage, 28.3% sore throat, 26.4% rhinorrhea/epistaxis, 18.9%% pharyngeal wall nodularity, and 15.1% enlarged neck lymph node. The most common affected organ was the ear in 90.6%. Major diagnosis was sensorineural hearing loss, rhinosinusitis, pharyngitis, and cervical adenitis in 58.5%, 30.2%, 20.8%, and 7.5%, respectively. Hearing impairment occurred in 69.8% of the patients, out of which 43.4% were found to be mild hearing loss. Only 19 (35.8%) had dialysis, while 34 (64.2%) of them had conservatively treated.

Conclusion:

The prevalence of chronic renal disease in otorhinolaryngological practice was 1.1%, otological presentation was the most common in 90.6% of patients and 64.2% did well on conservative treatment. Avoidable otorhinolaryngologic complications among patients with chronic renal disease were noted. Periodic otorhinolaryngology referral for review and prompt management of this complication is advised.

Mechanisms of cognitive dysfunction in CKD

Cognitive impairment is an increasingly recognized major cause of chronic disability and is commonly found in patients with chronic kidney disease (CKD). Knowledge of the relationship between kidney dysfunction and impaired cognition may improve our understanding of other forms of cognitive dysfunction. Patients with CKD are at an increased risk (compared with the general population) of both dementia and its prodrome, mild cognitive impairment (MCI), which are characterized by deficits in executive functions, memory and attention. Brain imaging in patients with CKD has revealed damage to white matter in the prefrontal cortex and, in animal models, in the subcortical monoaminergic and cholinergic systems, accompanied by widespread macrovascular and microvascular damage. Unfortunately, current interventions that target cardiovascular risk factors (such as anti-hypertensive drugs, anti-platelet agents and statins) seem to have little or no effect on CKD-associated MCI, suggesting that the accumulation of uraemic neurotoxins may be more important than disturbed haemodynamic factors or lipid metabolism in MCI pathogenesis. Experimental models show that the brain monoaminergic system is susceptible to uraemic neurotoxins and that this system is responsible for the altered sleep pattern commonly observed in patients with CKD. Neural progenitor cells and the glymphatic system, which are important in Alzheimer disease pathogenesis, may also be involved in CKD-associated MCI. More detailed study of CKD-associated MCI is needed to fully understand its clinical relevance, underlying pathophysiology, possible means of early diagnosis and prevention, and whether there may be novel approaches and potential therapies with wider application to this and other forms of cognitive decline.

The effect of electrolyte balance on the voice in hemodialysis patients

OBJECTIVE

The aim of the study was to demonstrate the effect of blood electrolytes on the voice in chronic hemodialysis patients.

METHODS

The study included a total of 59 hemodialysis patients. Pre- and post-dialysis voice recordings were performed. In the analysis of vocal acoustic parameters, fundamental frequency (F0), jitter, shimmer, the noise-to-harmonics ratio (NHR), and F0 minimum and F0 maximum were measured. The Voice Handicap Index-10 (VHI-10), and maximum phonation time (MPT) were evaluated. For perceptual evaluation, the GRBAS scale was used. The duration of dialysis (years) and changes in weight during dialysis were recorded for each patient. From venous blood samples, measurements were taken of hemoglobin (Hb), albumin, Na+, K+, creatinine, uric acid, phosphorus, Ca++, and parathormone.

RESULTS

The difference in the pre and post-dialysis values of F0, shimmer, NHR and MPT were found to be statistically significant (p = 0.001). The only variable determined to have an effect on the change in F0 values was uric acid, and the change in the F0 values was statistically significant (p = 0.009). The only variable determined to have an effect on the change in shimmer values was sodium, and the change was statistically significant (p = 0.034). The only variable determined to have an effect on the change in NHR values was creatinine, and the change in the NHR values was statistically significant (p = 0.028). Hb and the duration of dialysis were determined to have a statistically significant effect on the change in MPT values (p = 0.001).

CONCLUSIONS

The results showed that uric acid was the agent creating a reduction in vocal cord vibration, the agent increasing the difference between vibration waves was Na+, and creatinine increased the NHR rate. The effect of these variables can be considered important in the understanding of vocal cord physiology.

Objective analysis of voice changes in a hemodialysis session and its correlation with ultrafiltration

INTRODUCTION

The aim of the study is to analyze the voice changes occurring during a hemodialysis session objectively and to investigate the statistical correlation between voice changes and ultrafiltration, blood pressure, dry weight and the other variables of the patients.

MATERIALS AND METHODS

A total of 169 patients were included in the study. Electronic voice recordings of the patients were performed with the aim of making objective voice analysis before and after dialysis. Fundamental frequency measurements occurring at the level of the larynx (Fo) and harmonic-to-noise ratio (HNR) were measured from these voice recordings.

RESULTS

When the voice recordings obtained from 169 hemodialysis patients before and after dialysis were investigated, it was observed that a significant increase occurred in the Fo (from 164.52±43.36 Hz to 193.19±47.08 Hz, p<0.01). When the change in HNR was investigated, a significant reduction was determined in the post-dialysis measurements (4.6±3.23 dB) compared to the pre-dialysis measurements (16.10±4.06 dB, p<0.01). Mean 2.49±0.83 L of ultrafiltration was performed and a significant reduction was observed in post-session body weights of the patients (p<0.01). There was a highly statistical significance between the measurements of post-dialysis Fo and post-dialysis body weights. A highly significant correlation was determined between the amount of ultrafiltration performed and a significant increase observed in Fo before and after dialysis. Also a significant correlation was determined between the reduction in the mean post-session blood pressures and the reduction in the HNRs.

CONCLUSION

Objective voice analysis is suggesting that it can be a simple and applicable method that can be used to determine the dry weight.

Voice change in end-stage renal disease patients after hemodialysis: correlation of subjective hoarseness and objective acoustic parameters

INTRODUCTION

Patients with end-stage renal disease (ESRD) who are treated with hemodialysis (HD) frequently complain about hoarseness after completion of each HD session. The HD treatment affects laryngeal volume and muscle function. This study attempted to evaluate the vocal effect of HD by acoustic and aerodynamic analysis and to determine the difference between voice change group (VCG) and nonvoice change group (NVCG).

MATERIALS AND METHODS

A total of 55 patients (34 females and 21 males) diagnosed with ESRD and undergoing outpatient HD were enrolled. The subjects were divided into the VCG (n=13) and NVCG (n=42) by the change of the Korean Voice Handicap Index score. Patients underwent weighing and acoustic, aerodynamic analysis before and after the HD. Fundamental frequency (F0), jitter, shimmer, noise-to-harmonics ratio (NHR), pitch range, habitual pitch, voice energy, and maximal phonation time (MPT) were obtained. The pre- and post-HD data were compared using paired t test. The results were compared after dividing the total group into the VCG and NVCG categories. Correlation between the change of the weight and change of the voice analysis result was certified by Pearson correlation coefficient.

RESULTS

The F0 and habitual pitch increased in all subjects. The NHR and MPT parameters significantly decreased (P<0.05). In the NVCG group, all the results were same as the total group. In the VCG group, the NHR result differed from the total group. All acoustic parameters showed no statistically significant differences between the two groups. There was no correlation between the weight change (%) and the change of acoustic parameter results.

CONCLUSIONS

The NVCG group of patient displayed improvement in NHR, whereas the VCG group showed no change. Weight change did not significantly correlate with the voice analysis results.