SUMMARYTo study the prevalence of male obesity-secondary hypogonadism (MOSH) in patients with moderate to severe obesity, we performed a prospective prevalence study including 100 male patients with moderate to severe obesity at a university tertiary hospital. Total testosterone (TT) and sex hormone-binding globulin (SHBG) concentrations among others were assayed in all patients. Serumfree testosterone (FT) concentration was calculated from TT and SHBG levels. Semen analysis was conducted in 31 patients. We found a prevalence of 45% (95% CI: 35-55%) when considering decreased TT and/or FT concentrations. Serum concentrations of TT were correlated negatively with glucose (r = À0.328, p < 0.001) and insulin resistance (r = À0.261, p = 0.011). The same occurred with FT and glucose (r = À0.340, p < 0.001) and insulin resistance (r = À0.246, p = 0.016). Sixty-two percent (95% CI: 39-85%) of the patients with seminogram also presented abnormal results in semen analysis. The frequencies of low TT or low FT values were similar in patients with abnormal or normal semen analysis (p = 0.646 and p = 0.346, respectively). Ejaculate volume inversely correlated with BMI (q = À0.400, p = 0.029) and with excess body weight (q = À0.464, p = 0.010). Our data show the prevalence of MOSH in patients with moderate to severe obesity is high. Low circulating testosterone is associated with insulin resistance and low ejaculate volume with higher BMI and excess body weight. Semen analysis must be performed in these patients when considering fertility whether or not presenting low circulating testosterone.

ABSTRACT Context Restoration of ovulation is quite common in women with polycystic ovary syndrome (PCOS) after surgically-induced weight loss. Whether or not this results in an improvement of PCOS-associated infertility is uncertain. Objective To study fertility and gestational outcomes in women with PCOS after bariatric surgery. Design Unicenter cohort study. Setting Academic hospital. Patients Two-hundred sixteen premenopausal women were screened for PCOS before bariatric surgery. Women were followed-up after the intervention until mid-2019 regardless of having or not PCOS. Interventions All participants underwent bariatric surgery from 2005 to 2015. Main outcome measures Pregnancy and live birth rates in the PCOS and control groups. Results In women seeking fertility, pregnancy rates were 95.2% in PCOS and 76.9% in controls (P=0.096) and live birth rates were 81.0% and 69.2%, respectively (P=0.403). The time to achieve the first pregnancy after surgery was 34±28 months in women with PCOS and 32±25 months in controls. Albeit the mean birth weight was lower (P=0.040) in newborns from women with PCOS (2,763±618 g) compared with those from controls (3,155±586 g), the number of newborns with low birth weight was similar in both groups (3 in the PCOS group and 1 in the controls, P=0.137). Maternal (17.6% in PCOS and 22.2% in controls, P=0.843) and neonatal (23.5% in PCOS and 14.8% in controls, P=0.466) complications were rare, showing no differences between groups. Conclusions Pregnancy and fertility rates in very obese women with PCOS after bariatric surgery were high, with few maternal and neonatal complications.

No abstract

Background: Home parenteral nutrition (HPN) has become a common therapy. There is still controversy regarding the possibility that peripherally inserted central catheters (PICCs) may diminish catheter-related blood stream infection (CRBSI) rates. Methods: We searched the PubMed database for studies reporting the rates of CRBSI with HPN. Study selection was performed independently by three investigators. Disagreements were discussed and resolved by consensus or by arbitration by an author not involved in the search. The National Institutes of Health Quality Assessment Tools was used to assess the methodological quality of the studies. Meta-analyses were performed using MetaXL 5.3 with the quality effects model. Results: Screening of the article titles and abstracts yielded 134 full text articles for evaluation. Only three prospective studies that included appropriate data were considered for the final analysis. The relative risk of the CRBSI rate was 0.41 (0.14–1.17) for PICC vs. tunneled catheters. The relative risk of the CRBSI rate was 0.16 (0.04–0.64) for PICC vs. ports. The relative risk of the thrombosis rate was 3.16 (0.20–49.67) for PICCs vs. tunneled. Conclusions: There is insufficient evidence to show a difference in CRBSI rates between PICCs and tunneled catheters. On the other hand, PICCs showed lower CRBSI rates than ports. There was also no difference in the rate of catheter-related thrombosis and mechanical complications.

No abstract

The aim of this study was to monitor the impact of a preoperative low-calorie diet and bariatric surgery on the bacterial gut microbiota composition and functionality in severe obesity and to compare sleeve gastrectomy (SG) versus Roux-en-Y gastric bypass (RYGB). The study also aimed to incorporate big data analysis for the omics results and machine learning by a Lasso-based analysis to detect the potential markers for excess weight loss. Forty patients who underwent bariatric surgery were recruited (14 underwent SG, and 26 underwent RYGB). Each participant contributed 4 fecal samples (baseline, post-diet, 1 month after surgery and 3 months after surgery). The bacterial composition was determined by 16S rDNA massive sequencing using MiSeq (Illumina). Metabolic signatures associated to fecal concentrations of short-chain fatty acids, amino acids, biogenic amines, gamma-aminobutyric acid and ammonium were determined by gas and liquid chromatography. Orange 3 software was employed to correlate the variables, and a Lasso analysis was employed to predict the weight loss at the baseline samples. A correlation between Bacillota (formerly Firmicutes) abundance and excess weight was observed only for the highest body mass indexes. The low-calorie diet had little impact on composition and targeted metabolic activity. RYGB had a deeper impact on bacterial composition and putrefactive metabolism than SG, although the excess weight loss was comparable in the two groups. Significantly higher ammonium concentrations were detected in the feces of the RYGB group. We detected individual signatures of composition and functionality, rather than a gut microbiota characteristic of severe obesity, with opposing tendencies for almost all measured variables in the two surgical approaches. The gut microbiota of the baseline samples was not useful for predicting excess weight loss after the bariatric process.

Introducción: recientemente se ha planteado la posibilidad de comprobar la colocación de los catéteres centrales de inserción periférica (PICC) mediante control electrocardiográfico intracavitario (ECG-IC) ya que permitiría disminuir el tiempo de colocación y evitaría el control radiológico.Objetivo: evaluación de dicho método frente al control radiológico habitual.Métodos: estudio prospectivo en el que se incluyeron 532 pacientes de forma consecutiva. Se excluyeron aquellos pacientes con arritmias o en tratamiento con fármacos antiarrítmicos. En todos los casos se comprobó la colocación de la punta del PICC mediante control ECG-IC y mediante la realización de una radiografía de tórax, que fue considerada método de referencia.Resultados: la colocación del PICC gracias al control ECG-IC (aplicabilidad) fue del 96,8%. La correcta colocación del PICC gracias a la interpretación del ECG-IC se confirmó en un 94% de los casos con la radiografía de tórax (precisión). En 13 pacientes (2,7%) se requirió la recolocación del catéter tras el control radiológico. El índice κ de concordancia fue de 0,356 (p < 0,001). La sensibilidad del método ECG fue de 0,98, con un VPP de 0,97 y un cociente de probabilidad positivo de 1,5. Sin embargo, la especificidad fue solo del 0,35 con un VPN de 0,41 y un cociente de probabilidad negativo de 0,06.Conclusión: la comprobación de la colocación de los PICC mediante ECG-IC es plausible, segura, presenta unos índices de validez/fiabilidad adecuados y permitiría disminuir el tiempo de colocación del catéter. Sin embargo, la comprobación radiológica sigue siendo necesaria, especialmente en los casos de ECG negativo o dudoso.

Serum bioavailable 25-hydroxyvitamin D concentrations are not associated with bone mass loss after bariatric surgery in women. The negative association with serum PTH levels suggests that vitamin D supplementation partly improves secondary hyperparathyroidism, yet other mechanisms may contribute to low bone mass after bariatric surgery.