Hyponatremia in Guillain-Barré Syndrome.

Objectives: To evaluate incidence, risk factors, and in-hospital outcomes associated with hyponatremia in patients hospitalized for Guillain-Barré Syndrome (GBS).

Methods: We identified adult patients with GBS in the Nationwide Inpatient Sample (2002-2011). Univariate and multivariable analyses were used.

Traumatic subdural hematoma: Is there a weekend effect?

Objective: Traumatic subdural hematoma (TSDH) is a surgical emergency. The effect of weekend admission on surgery and in-hospital outcomes in TSDH is not known.

Methods: We queried the Nationwide Inpatient Sample from 2002 to 2011 and used ICD-9-CM codes to identify all non-elective admissions with a primary diagnosis of TSDH.

Association of Parkinson's disease with hospitalization for traumatic brain injury.

Purpose: The goal of our study was to determine if patients with Parkinson's disease (PD) are more susceptible to hospitalization for traumatic brain injury (TBI).

Methods: The US Nationwide Inpatient Sample database was queried (2004-2011) to identify cohorts of patients with PD (N = 1 047 656) and without PD (N = 115 95 173). The age range of the study population was 60-89 years.

Recreational marijuana use and acute ischemic stroke: A population-based analysis of hospitalized patients in the United States.

Background: Recreational marijuana use is considered to have few adverse effects. However, recent evidence has suggested that it precipitates cardiovascular and cerebrovascular events. Here, we investigated the relationship between marijuana use and hospitalization for acute ischemic stroke (AIS) using data from the largest inpatient database in the United States.

Association of Recreational Marijuana Use with Aneurysmal Subarachnoid Hemorrhage.

Objective: Our objective was to evaluate the effect of cannabis use on hospitalizations for aneurysmal subarachnoid hemorrhage (aSAH).

Methods: The Nationwide Inpatient Sample (2004-2011) was used to identify all patients (age 15-54) with a primary diagnosis of aSAH (International Classification of Diseases, Ninth Edition, Clinical Modification 430). We identified patients testing positive for cannabis use using all available diagnosis fields.