The Daily Consumption of Cola Can Determine Hypocalcemia: A Case Report of Postsurgical Hypoparathyroidism-Related Hypocalcemia Refractory to Supplemental Therapy with High Doses of Oral Calcium.

The consumption of soft drinks is a crucial factor in determining persistent hypocalcemia. The aim of the study is to evaluate the biochemical mechanisms inducing hypocalcemia in a female patient with usual high consumption of cola drink and persistent hypocalcemia, who failed to respond to high doses of calcium and calcitriol supplementation. At baseline and after pentagastrin injection, gastric secretion (Gs) and duodenal secretion (Ds) samples were collected and calcium and total phosphorus (Ptot) concentrations were evaluated. At the same time, blood calcium, Ptot, sodium, potassium, chloride, magnesium concentrations, and vitamin D were sampled. After intake of cola (1 L) over 180 min, Gs and Ds and blood were collected and characterized in order to analyze the amount of calcium and Ptot or sodium, potassium, magnesium, and chloride ions, respectively. A strong pH decrease was observed after cola intake with an increase in phosphorus concentration. Consequently, a decrease in calcium concentration in Gs and Ds was observed. A decrease in calcium concentration was also observed in blood. In conclusion, we confirm that in patients with postsurgical hypoparathyroidism, the intake of large amounts of cola containing high amounts of phosphoric acid reduces calcium absorption efficiency despite the high doses of calcium therapy.

Role of prophylactic central neck dissection in cN0-papillary thyroid carcinoma: results from a high-prevalence area.

BACKGROUND: Prophylactic, compartment-oriented central neck dissection (CND) for cN0 papillary thyroid carcinoma (PTC) is not widely practiced. We examined our results with this surgical approach. METHODS: A cohort of 158 patients operated on for the classical variant of PTC at a follow-up of 1-22 years (mean: 6.6) were enrolled. The patients with a preoperative diagnosis of cN0 PTC (group A, 59 patients) underwent total thyroidectomy (TT) + CND. In the patients with incidental postoperative diagnosis of malignancy (group B, 99 patients) a TT alone was performed. RESULTS: Ninety-six T1, 36 T2, 26 T3/T4 PTC patients were enrolled. The overall biochemical/scintigraphic recurrence rate (15 patients, 9.49%), was significantly higher in group B. Disease-free survival and need for postoperative radioiodine ablative treatment were more favorable in group A (P<0.05; P<0.001, respectively). The median radioiodine ablative treatment in the T2 cluster alone was lower in group A (P<0.001). The morbidity rate was similar in both groups. CONCLUSION: Considering the acceptable morbidity, prophylactic CND seems to be advantageous in terms of recurrence rate and need for radioiodine treatment in this variant of PTC, at least in T2 or more advanced stages. The indolent behavior of PTC does not allow for reliable prognostic evaluations.

A functional study of the esophagus in patients with non-cardiac chest pain and dysphagia.

BACKGROUND/AIMS: Nutcracker esophagus and non-specific motility disorders are the main causes of non-cardiac chest pain (NCCP), with gastroesophageal reflux in 60% of cases. Achalasia and diffuse esophageal spasm are the most frequent anomalies described in patients with dysphagia. The goal of this study was to evaluate the occurrence of esophageal body and lower esophageal sphincter motor abnormalities in patients with dysphagia, NCCP, or both. MATERIALS AND METHODS: This study is a retrospective analysis of 716 patients with NCCP and/or dysphagia tested between January 1994 and December 2010. 1023 functional studies were performed, 707 of which were esophageal manometries, 225 esophageal pH-meters, and 44 bilimetries. We divided the patients into three groups: group 1 was composed of patients affected with dysphagia, group 2 with NCCP and group 3 with NCCP and dysphagia. RESULTS: Manometric anomalies were detected in 84.4% of cases (p<0.001). The most frequent esophageal motility alteration was achalasia (36%). The lower esophageal sphincter was normal in 45.9% of patients (p<0.001). In all 3 groups, 80.9%, 98.8%, and 93.8, respectively, of patients showed normal upper esophageal sphincter (p=0.005). CONCLUSION: Our data differs from those of other studies because they were collected from and analyzed by a single tertiary level referral center by a single examiner. This could have eliminated the variability found in different hands and different experiences. The high percentage of symptomatic patients with non-pathologic esophageal motility pattern suggests an unclear origin of the disease, with possible neuromuscular involvement. As a result, these patients may need more-detailed diagnostic studies.

Effects of transcranial direct current stimulation on esophageal motility in patients with gastroesophageal reflux disease.

OBJECTIVE: To evaluate the effects of transcranial direct current stimulation (tDCS) on esophageal peristalsis in patients with gastroesophageal reflux disease (GERD). METHODS: Patients with GERD preliminary diagnosis were included in a randomized double-blind sham-controlled study. Esophageal manometry was performed before and during transcranial direct current stimulation (tDCS) of the right precentral cortex. Half of patients were randomly assigned to anodal, half to sham stimulation. Distal waves amplitude and pathological waves percentage were measured, after swallowing water boli, for ten subsequent times. Last, a 24h pH-bilimetry was done to diagnose non-erosive reflux disease (NERD) or functional heartburn (FH). The values obtained before and during anodal or sham tDCS were compared. RESULTS: Sixty-eight patients were enrolled in the study. Distal waves mean amplitude increased significantly only during anodal tDCS in NERD (p=0.00002) and FH subgroups (p=0.008) while percentage of pathological waves strongly decreased only in NERDs (p=0.002). CONCLUSIONS: Transcranial stimulation can influence cortical control of esophageal motility and improve pathological motor pattern in NERD and FH but not in erosive reflux disease (ERD) patients. SIGNIFICANCE: Pathophysiological processes in GERD are not only due to peripheral damage but to central neural control involvement as well. In ERD patients dysfunctions of the cortico-esophageal circuit seem to be more severe and may affect central nervous system physiology.

Predictive factors of mortality in patients with acute mesenteric ischemia. A retrospective study.

AIM: The aim of this retrospective study was to evaluate the impact of some risk factors on mortality in patients with Acute mesenteric ischemia (AMI). MATERIALS AND METHODS: From September 2003 to August 2011, 200 patients were operated on for bowel infarction at our unit: 149 were included in the study. For each patient, socio-demographic (gender and age) and clinical data (extent of necrosis, predisposing factors, WBC, LDH, comorbidities) were collected from patients' clinical records. RESULTS: Of the 149 patients who underwent surgery, 57 (38.3%) died. A significantly higher mortality was associated with older age (79.9 versus 74.2 years, p < 0.01), higher LDH serum levels (695 versus 636 UI/L, p < 0.01), higher WBC (25.1 versus 22.5 X 103/mm3; p < 0.01), and extent of necrosis (p< 0.01). Otherwise, there was no correlation between comorbidities and mortality. Finally, multivariate analysis confirmed the significantly higher risk of death in patients with right colon and massive small bowel infarction (adjOR= 3.58; 95% CI=1.36-9.42) and intestinal perforation (adjOR=31.1; 95% CI=2.45-395.7). DISCUSSION: The results of our study suggest that the contribution of laboratory tests is limited, even if increased indexes of necrosis (such as LDH) associated with neutrophilic leukocytosis and metabolic acidosis, may help in defining diagnosis/ prognosis, though with low accuracy. CONCLUSIONS: The extent of necrosis and diagnostic delay seem to be the most important prognostic factors even after adjusting for confounding due to age, presence of comorbidities, and laboratory tests (LDH and WBC). KEY WORDS: Acute mesenteric ischemia, Mortality, Predictive factors.

Esophageal motility changes after thyroidectomy; possible associations with postoperative voice and swallowing disorders: preliminary results.

OBJECTIVE: Swallowing and voice impairment are common after thyroidectomy. We evaluated short-term functional changes in esophageal motility in a series of patients who had undergone total thyroidectomy. Several studies have investigated these symptoms by means of interviews or questionnaires. STUDY DESIGN: Prospective study. SETTING: Academic research. MATERIALS AND METHODS: Thirty-six consenting patients were prospectively recruited. Eligibility criteria were thyroid volume ≤ 60 mL, benign disease, and age between 18 and 65 years. Exclusion criteria were previous neck surgery, severe thyroiditis, hyperthyroidism, and pre- or postoperative vocal cord palsy. Voice impairment score, swallowing impairment score, lower esophageal sphincter pressure, esophageal motility, upper esophageal pressure, and coordination were evaluated preoperatively and 30 to 45 days after surgery. RESULTS: Postoperative swallowing impairment (appearance or worsening of dysphagia) was found in 20% of patients and voice impairment in more than 30%. Both preoperative and postoperative esophageal motility were similar. All patients showed an average decrease of 25% in upper esophageal pressure, although the pressure was within normal range. Swallowing alterations were associated with upper esophageal incoordination (P < .03), and proximal acid reflux was significantly associated with voice impairment (P < .02). CONCLUSION: After uncomplicated thyroidectomy, decreased upper esophageal pressure may explain both pharyngeal (dysphagia) and laryngeal (vocal impairment) exposure to acid. In the future, proton pump inhibitor therapy protocols should be evaluated.