ASEN 5016 Lecture 11: Operational Space Medicine

 


 OBJECTIVES

  1. Describe purpose of Space Flight Medical Operations
  2. Identify primary Med Ops functions, systems, and operational challenges inherent to spaceflight

 


Space Medicine (pathology) differs from Space Physiology (adaptation)

 

http://science.nasa.gov/headlines/y2002/30sept_spacemedicine.htm?list728635

 

Purpose

Selection and Training of Astronauts

Prevention of Health Hazards in Space

Countermeasures (~common ground between Medicine and Physiology)

Treatment of injury or illness

Rehabilitation (postflight)


Main objectives of Medical Operations

            Healthy / happy crew

            Support / drive medical evaluations & studies

            Emergency / Contingency support

            Pre/post & on-orbit support

            CHeCS (Crew Health Crew System) equipment Support

            Support special operations: Extravehicular Activities (EVA)

 

Personnel of Medical Operations

            Flight Surgeon / Crew Surgeon

            Biomedical Flight Controller (BME)

            Space Radiation Analysis Group (SRAG)

            Behavioral Health Performance Group (BHPG)

            Crew à Crew Medical Officer (CMO)

            Expert support: engineers, scientists, medical specialists


CHeCS: ISS Crew Health Care System

 

            3 Major Systems

                        HMS: Health Maintenance System

                        CMS: Countermeasure System

                        EHS: Environmental Health System

            CHeCS rack

                        Located in the Lab module


HMS: Health Maintenance System

            Defibrillator: modified Commercial Off-The-Shelf (COTS)

            CMRS: Crew Medical Restraint System

                        Patient stabilization & restraint

                        CMO restraint

                        Electrical isolation

                        Deployed via seat tracks

            RSP: Respiratory Support Pack

                        100% O2 for conscious or unconscious patient

            ALSP kit (Advanced Life Support Pack)

                        ‘Bad day’ kit

                        Provides equipment for ACLS (Advanced Cardiac Life Support & BTLS (Basic Trauma Life Support) protocols

            AMP kit (Ambulatory Medical Pack)

                        Medicine cabinet

                        PCBA (Portable Clinical Blood Analyzer)

                        Surgical Supplies

                        Dental equipment

                        Bandages

                        Other medical equipment: urinary catheters

            CCPK: Crew Contamination Protection Kit

                        Used in response to toxic release

                        Contents: gloves, dust mask, goggles, clean-up mitts, tox decals, pH strips

                                    SSE: Space Station Eyewash

                                                Modified swimming goggles

                                                Stowed near hand-pump water port


CMS: Countermeasures System

            TVIS: Treadmill with Vibration Isolation & Stabilization

                        Motorized, 0-10 mph

                        VIS: Vibration Isolation & Stabilization

                                    Gyroscope: roll stabilization

                                    Stabilizers: pitch stabilization

                        Records data for ground analysis

            RED: Resistive Exercise Device

                        Versatile

                        Full range of motion

                        Mitigates muscle atrophy & bone loss

(EXTREMELY IMPORTANT!)

            CEVIS: Cycle Ergometer with Vibration Isolation System

                        Leg & arm ergometer

                        VIS: Vibration Isolation System

                                    Isolator in each corner

                        Records data for ground analysis

            MEC: Medical Equipment Computer

                        Supports onboard medical equipment & activities

            HRM: Heart Rate Monitor

                        Watch & chest strap

            BP/ECG (Blood Pressure/Electrocardiogram) Device

                        Supports on-orbit physical evaluations


EHS: Environmental Health System

            Radiation

                        Passive dosimeters

                                    RAM (Radiation Area Monitor)

CPD (Crew Personal Dosimeter)

                                                Crewmembers are radiation workers!

                        Radiation Detectors

                                    EV-CPDS (Extravehicular-Charged Particle Directional Spectrometer)

                                                Directions: Forward (X+), Aft (X-), Zenith (Z+)

EVA accessible only

                                    IV-CPDS (Intravehicular-Charged Particle Directional Spectrometer)

                                                Deployed direction: dependent on Radiation group request

                                    TEPC: Tissue Equivalent Proportional Counter

                                                Omni-directional

                                                Tied to ISS Caution & Warning System

 

            Microbiology Sampling Kits

                        SSK: Surface Sampling Kit

                                    Samples ISS surfaces for bacteria & fungi

                        MAS: Microbial Air Sampler

                                    Samples air for bacteria & fungi

                        WMK: Water Microbial Kit

                                    Samples drinking water for bacteria

 

            Toxicology

                        VOA: Volatile Organic Analyzer

                                    In CHeCS rack

                                    GC/IMS

                                    Analyzes for a predetermined list of compounds

                        CSA-CP: Compound Specific Analyzer-Combustion Product

                                    COTS (Commercial Off-The-Shelf)

                                    Analyzes: CO, HCl, HCN, & O2

                        CDM: Carbon Dioxide Monitor

                                    Analyzes: CO2

                        Return samplers

                                    SSAS: Solid Sorbent Air Sampler

                                                Entire unit no longer flow due to bulkiness

                                                Only w/ internal tubes w/ a hand pump

                                    FMK: Formaldehyde Monitor Kit

                                    GSC: Grab Sample Container

                                                Vacuum tube

 

            Acoustic Dosimeters

                        IAD: ISS Acoustic Dosimeter

                                    Used to calculate a 24-hr average sound level

                        SLM: Sound Level Meter

                                    Provides a detailed sound measurement

                                    Instantaneous readings


Telemedicine

            PMC: Private Medical Conference

            Private conference w/ the crew

Scheduled weekly

Capabilities

                        Audio / video conference

                        Live private video downlink

                        Higher quality

                                    No similar uplink capability

            Electronic still photo downlink


Emergencies

            Crewmembers are trained to handle all onboard emergencies w/o ground support

                        Medical

                        Depress

                        Fire

                        Toxic release


Special Operations

            EVA (Extravehicular Activity or space walk)

                        Pre-EVA

                                    On-orbit medical & fitness assessments

                                    Medical conference

                                    Hand / arm exercise

                                    Prebreathe protocol

                        During EVA

                                    Monitor metabolic rates, ppO2, ppCO2, EKG, & voice

                        Post-EVA

                                    Medical conference

 


Special thanks to the Space Med Ops Team at NASA JSC for providing the preceding information, especially Mr. Will Dishong (April 2004).


 

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