Publications by authors named "Luis Calderon"

Background: Ultrasound can overcome barriers to visualizing the internal jugular vein, allowing hepato-jugular reflux and jugular venous pressure measurement. We aimed to determine operating characteristics of the ultrasound hepato-jugular reflux and ultrasound jugular venous pressure predicting right atrial and pulmonary capillary occlusion pressures.

Methods: In a prospective observational cohort at three US academic hospitals the hepato-jugular reflux and jugular venous pressure were measured with ultrasound before right heart catheterization.

View Article and Find Full Text PDF

Purpose: The COVID-19 pandemic has spread worldwide, and almost 396 million people have been infected around the globe. Latin American countries have been deeply affected, and there is a lack of data in this regard. This study aims to identify the clinical characteristics, in-hospital outcomes, and factors associated with ICU admission due to COVID-19.

View Article and Find Full Text PDF

<b>Background and Objective:</b> Forage production in the tropics is generally asymmetrically distributed. Hence the need to use more complex models, especially when multiple comparisons are made and there are very large deviations from normality. The objective of this research is to fit a Generalized Additive Model for Location, Scale and Shape (GAMLSS) model on accumulated dry matter data from <i>Brachiaria brizantha</i> using a model selection algorithm.

View Article and Find Full Text PDF
Article Synopsis
  • The study focused on how the length of hospitalisation (LOH) affects the outcomes of patients with acute heart failure (AHF) after they are discharged, comparing results across different hospital departments.
  • Out of 8,563 patients analyzed, 90-day outcomes showed that longer hospital stays led to higher post-discharge mortality rates, particularly for those staying over 15 days, but readmission rates remained constant regardless of LOH.
  • The research concluded that shorter hospital stays do not lead to worse outcomes, and higher mortality risks associated with longer stays were consistent across various hospital departments.
View Article and Find Full Text PDF

While the blood was related to life since antiquity, scientific investigations on anatomy and physio-logy of the circulation system had to wait until the arrival of the 16th century. In trauma patients, hemorrhagic shock is the main risk factor for multiple organ dysfunction and consequent increased mortality. On the pre-hospital setting intravenous administration of crystalloid solution became the more common intervention during resuscitation of trauma patient due to many reasons although currently new discussions have blossomed on regards type of fluids and resuscitation.

View Article and Find Full Text PDF
Article Synopsis
  • The study investigates how the risk of malnutrition affects 30-day mortality rates in elderly patients experiencing acute heart failure (AHF) in emergency departments.
  • It analyzed data from 749 patients aged 65 and older, finding that 79.3% were at risk of malnutrition and the overall 30-day mortality rate was 8.8%.
  • The results indicate that malnutrition is a significant independent factor for higher 30-day mortality, suggesting that routine screening for malnutrition could improve patient care and management in emergency settings.
View Article and Find Full Text PDF

This study aimed to investigate collagen (Coll-I, III, IV) and elastin in canine normal prostate and prostate cancer (PC) using Picrosirius red (PSR) and Immunohistochemical (IHC) analysis. Eight normal prostates and 10 PC from formalin-fixed, paraffin-embedded samples were used. Collagen fibers area was analyzed with ImageJ software.

View Article and Find Full Text PDF

Importance: Abnormal peripheral perfusion after septic shock resuscitation has been associated with organ dysfunction and mortality. The potential role of the clinical assessment of peripheral perfusion as a target during resuscitation in early septic shock has not been established.

Objective: To determine if a peripheral perfusion-targeted resuscitation during early septic shock in adults is more effective than a lactate level-targeted resuscitation for reducing mortality.

View Article and Find Full Text PDF

Background: The purpose of this study was to validate the ability of an early post-cardiac arrest illness severity classification to predict patient outcomes.

Methods: The Pittsburgh Cardiac Arrest Category (PCAC) is a 4-level illness severity score that was found to be strongly predictive of outcomes in the initial derivation study. We assigned PCAC scores to consecutive in and out-of-hospital cardiac arrest subjects treated at two tertiary care centers between January 2011 and September 2013.

View Article and Find Full Text PDF

Background: Neuron specific enolase (NSE) and astroglial protein S100B are associated with outcome following resuscitation from cardiac arrest. We tested whether NSE and S100B levels are associated with illness severity on hospital arrival, and whether levels are independently associated with survival to hospital discharge after adjusting for initial illness severity.

Methods: Levels of NSE and S100B were obtained at arrival, 6, 12, 24, 48, and 72h after successful resuscitation from cardiac arrest.

View Article and Find Full Text PDF

Objective: To analyze pathologic and clinical features in patients with primary gastric lymphoma (PGL) in a reference hospital in Mexico City, and to evaluate the variety of treatments chosen.

Methods: Patients with primary gastric lymphoma between 1975 and 2000. Those with histological diagnosis of primary gastric lymphoma confirmed by endoscopic biopsy or gastrectomies were eligible for inclusion in the study.

View Article and Find Full Text PDF

We assessed the short-term outcome of percutaneous coronary ultrasound thrombolysis (CUT) for high-risk thrombus-containing lesions in native coronaries in the setting of acute coronary syndromes (ACS). Data were prospectively collected in a multicenter (n = 32) registry of consecutive ACS patients. The study population (n = 126) had mostly (84%) totally occluded vessels.

View Article and Find Full Text PDF