Nebulized ketamine treatment for major depression in hospitalized patients

Nebulized Ketamine for the Treatment of Major Depressive Disorder in an Inpatient Setting: A Midazolam-controlled Randomized Controlled Trial

Phase 3 Interventional Maimonides Medical Center · NCT06752759

This study is testing if breathing in ketamine can help people with moderate to severe depression feel better while they are in the hospital.

Quick facts

PhasePhase 3
Study typeInterventional
Enrollment40 (estimated)
Ages18 Years to 88 Years
SexAll
SponsorMaimonides Medical Center Academic / other
Locations1 site (Brooklyn, New York)
Trial IDNCT06752759 on ClinicalTrials.gov

What this trial studies

This clinical trial evaluates the effectiveness of nebulized ketamine as a treatment for individuals with moderate to severe depression who are currently hospitalized. It is a double-blind, placebo-controlled study where participants will receive either nebulized ketamine or an active placebo, Midazolam, during their inpatient stay. Participants will undergo a series of visits, with dosing days requiring in-person attendance for monitoring. The study aims to assess the reduction of depressive symptoms through this innovative delivery method of ketamine.

Who should consider this trial

Good fit: Ideal candidates are adults aged 18 and older diagnosed with moderate to severe Major Depressive Disorder currently admitted to a psychiatric unit.

Not a fit: Patients with a history of bipolar disorder, psychotic disorders, or those allergic to ketamine or Midazolam may not benefit from this study.

Why it matters

Potential benefit: If successful, this treatment could provide a rapid and effective option for alleviating severe depressive symptoms in hospitalized patients.

How similar studies have performed: Other studies have shown promising results with ketamine for depression, but the specific use of nebulized ketamine is a novel approach.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* All individuals 18 years and older with a Montgomery-Asberg Depression Rating Scale score (MADRS) ≥ 20
* Must have a diagnosis of moderate to severe Major Depressive Disorder (MDD)
* Structured Clinical Interview for DSM-5 (SCID-5) will be performed to confirm MDD diagnosis

Exclusion Criteria:

* Adult patients with an allergy to Ketamine
* Adult patients with an allergy to Midazolam
* Individuals with a history of mania/hypomania or diagnosis of bipolar disorder
* Patients on lithium and/or lamotrigine therapy
* Recent or current homicidal ideation with an intent to act
* MDD with psychotic features or current or past diagnosis of a psychotic disorder
* No substance use disorder in the preceding 3 months except nicotine or caffeine or a positive urine screen for substances (except cannabis)
* Diagnosis of obsessive-compulsive disorder, antisocial personality disorder, borderline personality disorder, posttraumatic stress disorder, intellectual disability, altered mental status, pregnant or breastfeeding patients,
* Patients on \> 2 medications for hypertension
* Patients with uncontrolled hypertension (BP \>140 mm Hg systolic and/or \>90 mm Hg diastolic on two separate readings at the time of screening)
* Body weight of \> 150kg
* Patients with history of congestive cardiac failure
* Day of presentation, patients with unstable vital signs (systolic blood pressure \<90 or\>160 mm Hg, pulse rate \<50 or \>150 beats/min, and respiration rate \<10 or \>30 breaths/min)
* Consumption of opioids within 24 hours of drug administration
* Acutely intoxicated patients will also be excluded

Where this trial is running

Brooklyn, New York

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Severe DepressionModerate DepressionKetamineMidazolamPeripheral Nervous System AgentsCentral Nervous System AgentsNeurotransmitter AgentsPhysiologic Effects of Drugs
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.