Early experience with critically ill patients with COVID-19 in Montreal

Yiorgos Alexandros Cavayas1,2, Alexandre Noël3, Veronique Brunette3

  • 1Service de Soins Intensifs, Hôpital du Sacré-Coeur de Montréal, CIUSSS du Nord-de l'île de Montréal, Département de Médecine, Université de Montréal, 5400 Gouin Ouest, Montreal, QC, H4J 1C5, Canada. yiorgos.alexandros.cavayas@umontreal.ca.

Insights

Critically ill COVID-19 patients in Montreal had similar characteristics and outcomes to other regions. Increased physiologic dead space suggests pulmonary vascular injury is key to COVID-19 lung damage.

Area of Science:

  • Critical Care Medicine
  • Infectious Diseases
  • Pulmonology

Background:

  • Montreal was a major COVID-19 epicenter in Canada.
  • Regional disparities in COVID-19 incidence and mortality were observed.
  • Understanding local characteristics of critically ill patients is crucial.

Purpose of the Study:

  • To describe local characteristics of critically ill COVID-19 patients in Montreal.
  • To analyze treatments and outcomes of these patients.
  • To compare Montreal's COVID-19 ICU patient data with existing literature.

Main Methods:

  • Retrospective cohort study at a single center (Hôpital du Sacré-Cœur de Montréal).
  • Included consecutive adult patients admitted to the intensive care unit (ICU) with confirmed COVID-19.
  • Data collected between March 20 and May 13, 2020.

Main Results:

  • 75 patients admitted; median age 62 years, high rates of obesity, hypertension, and diabetes.
  • 57% required invasive mechanical ventilation (IMV) for a median of 11 days.
  • Overall hospital mortality was 25%, with 82% mortality in patients aged 80+.

Conclusions:

  • Characteristics and outcomes of critically ill COVID-19 patients in Montreal align with existing literature.
  • An increased physiologic dead space was observed in ventilated patients.
  • Pulmonary vascular injury is hypothesized to be central to COVID-19 lung damage.
Abstract

Related Concept Videos

Acute Respiratory Failure-II01:21

Acute Respiratory Failure-II

Type I Respiratory Failure, or hypoxemic respiratory failure, occurs when the partial pressure of oxygen (PaO2) in arterial blood falls below 60 mmHg while breathing room air without a corresponding increase in arterial carbon dioxide levels (PaCO2). This condition highlights a significant impairment in the lungs' capacity to oxygenate the blood.
The underlying physiological abnormalities that contribute to hypoxemic respiratory failure include:
852
Acute Respiratory Failure-I01:21

Acute Respiratory Failure-I

Acute respiratory failure is a condition characterized by the inability of the lungs to perform their primary function: gas exchange. This failure leads to insufficient oxygen levels (hypoxemia) in the blood, elevated carbon dioxide levels (hypercapnia), or both, causing critical impairment in organ function.
Definition: It is defined by specific criteria based on blood gas measurements. Hypoxemia happens when the partial pressure of oxygen (PaO2) falls below 60 mmHg. At the same time,...
625
Pneumonia III: Complications and Assessment01:30

Pneumonia III: Complications and Assessment

Pneumonia poses the potential for numerous complications that warrant consideration. These complications include the following:
670
Acute Respiratory Failure-III01:30

Acute Respiratory Failure-III

Hypercapnic respiratory failure, also known as Type 2 or ventilatory respiratory failure, is a severe condition characterized by the body's inability to effectively remove carbon dioxide (CO2) from the bloodstream. It leads to an arterial CO2 pressure (PaCO2) exceeding 45 mmHg and a blood pH above 7.35. This situation indicates that the body's ventilatory demand, or the ventilation needed to maintain normal PaCO2 levels, surpasses its supply or the maximum gas flow achievable without...
584
Acute Coronary Syndrome IV: Interprofessional Care01:28

Acute Coronary Syndrome IV: Interprofessional Care

IntroductionThe management of Acute Coronary Syndrome (ACS) aims to minimize myocardial damage, preserve myocardial function, and prevent complications.Initial ManagementInpatient management involves continuous cardiac monitoring, preferably in an ICU, focusing on blood pressure, serum sodium, potassium, and creatinine levels, and urine output. Ongoing pharmacologic management is crucial for stabilizing the patient.Supplemental Oxygen: Administer supplemental oxygen if oxygen saturation is...
132
Acute Respiratory Failure-V01:29

Acute Respiratory Failure-V

The treatment for acute respiratory failure varies based on factors like the underlying cause, overall health, and severity. A collaborative healthcare team is essential for early detection, often through arterial blood gas analysis. Identifying the cause is the primary goal, with treatment strategies adjusted for ventilation/perfusion (V/Q) mismatch, shunting, or diffusion impairment.
Ensure that patients are monitored continuously for their response to therapy, including changes in...
337