 |
|
Reactive arthritis (Reiter's syndrome)
|  |
Other
Types of Inflammatory Arthritis: Reactive
Arthritis
|
 |
|
Reading
|  |
Intellectual
Development
Promoting Optimal Health
and Development
Learning
Disorders
|
 |
|
Receptor(s)
|  |
|
 |
|
of airways
|  |
Asthma
|
 |
|
cell
|  |
Cells
Understanding the Immune System
|
 |
|
for drugs
|  |
Site
Selectivity: Receptors
on Cells
A Perfect Fit
Targets in The Body: Cell Receptors
Drug
Action: Affinity
and Intrinsic Activity
|
 |
|
for hormones
|  |
Endocrine
Function
Breast Cancer: Characteristics
|
 |
|
pain
|  |
Pain: Pain Pathways
|
 |
|
for smell
|  |
Nose and Sinuses
|
 |
|
Recommended dietary allowance (RDA)
|  |
|
 |
|
for minerals
|  |
Minerals
|
 |
|
for vitamins
|  |
Vitamins
Vitamins
|
 |
|
Recompression therapy
|  |
Air
Embolism: Treatment
Decompression
Sickness: Recompression
Therapy
Recompression
Therapy
Disorders Treated With Hyperbaric Oxygen Therapy
|
 |
|
Rectocele
|  |
When the Bottom Falls Out: Prolapse in the Pelvis
Pelvic Floor Disorders: Rectocele
|
 |
|
Rectovaginal examination
|  |
Gynecologic
Evaluation: Gynecologic
Examination
|
 |
|
Rectum
|  |
see also Anus
Digestive System
Rectum and Anus
Internal Female Genital Organs
|
 |
|
abscess of
|  |
Anorectal
Abscess
|
 |
|
age-associated changes in
|  |
Effects
of Aging: Large
Intestine and Rectum
|
 |
|
biology of
|  |
Anal and Rectal Disorders
|
 |
|
bleeding in
|  |
|
 |
|
in Meckel's diverticulum
|  |
Meckel's
Diverticulum: Symptoms and
Diagnosis
|
 |
|
cancer of
|  |
Colorectal
Cancer
|
 |
|
during pregnancy
|  |
Cancer
During Pregnancy
|
 |
|
screening for
|  |
Cancer Screening Recommendations
|
 |
|
drug administration by
|  |
Administration: Rectal Route
|
 |
|
examination of
|  |
Diagnosis: Medical
History and Physical Examination
Diagnosis: Occult
Blood Tests
Diagnosis
Cancer Screening Recommendations
|
 |
|
in benign prostatic hyperplasia
|  |
Benign
Prostatic Hyperplasia (BPH): Diagnosis
|
 |
|
in prostate cancer
|  |
Prostate
Cancer: Screening
|
 |
|
fistula of
|  |
Anorectal
Fistula
|
 |
|
foreign objects in
|  |
Foreign
Objects
|
 |
|
hemorrhoids of
|  |
Hemorrhoids
Banding a Hemorrhoid
|
 |
|
inflammation of
|  |
see Proctitis
|
 |
|
levator syndrome of
|  |
Levator
Syndrome
|
 |
|
polyps of
|  |
Colorectal
Polyps
|
 |
|
prolapse of
|  |
Rectal
Prolapse
Effects
of Aging
Pelvic Floor Disorders
When the Bottom Falls Out: Prolapse in the Pelvis
|
 |
|
spasm of
|  |
Levator
Syndrome
|
 |
|
temperature taking from
|  |
How to Take a Child's Temperature
|
 |
|
Recurrent aphthous stomatitis
|  |
Mouth Sores: Recurrent
Aphthous Stomatitis
|
 |
|
Red blood cells
|  |
|
 |
|
babesiosis of
|  |
Babesiosis
|
 |
|
biology of
|  |
Components
of Blood: Red
Blood Cells
|
 |
|
deficiency of
|  |
see Anemia(s)
|
 |
|
examination of
|  |
Diagnosis: Complete
Blood Count
Complete Blood Count (CBC)

|
 |
|
excess of (polycythemia)
|  |
Components
of Blood: Red
Blood Cells
Major Myeloproliferative Disorders

Polycythemia
Vera
What Are the Other Types of Polycythemia?
|
 |
|
in newborn
|  |
Polycythemia
in the Newborn
|
 |
|
formation of
|  |
Formation
of Blood Cells
|
 |
|
hemoglobin in
|  |
see Hemoglobin
|
 |
|
in kidney cancer
|  |
Kidney
Cancer: Symptoms
|
 |
|
malaria effects on
|  |
Malaria
|
 |
|
radiation effects on
|  |
Radiation Injury: Acute Radiation
Illness
|
 |
|
reference range for
|  |
Blood Tests*
|
 |
|
shape of
|  |
Red Blood Cell Shapes
|
 |
|
sickle-shaped
|  |
Sickle
Cell Disease
Red Blood Cell Shapes
|
 |
|
transfusion of
|  |
Types
of Transfusions: Red
Blood Cells
|
 |
|
Red color
|  |
|
 |
|
in mouth
|  |
Precancerous
Lesions
|
 |
|
of tongue
|  |
Tongue
Disorders: Discoloration
|
 |
|
Red eye
|  |
Symptoms: Red Eye
|
 |
|
Red-green color blindness
|  |
Inheritance
of Single-Gene Disorders: Recessive Disorders
|
 |
|
Reed-Sternberg cell
|  |
Hodgkin
Lymphoma: Diagnosis
|
 |
|
Referred pain
|  |
What Is Referred Pain?
Pain: Pain Pathways
Low
Back Pain: Causes
Low
Back Pain: Referred Pain
Neck
Pain: Causes
|
 |
|
Reflexes
|  |
Reflex Arc: A No-Brainer
|
 |
|
acoustic
|  |
Ears: Middle Ear
|
 |
|
diving
|  |
Drowning: Effects
of Cold
|
 |
|
knee jerk
|  |
Reflex Arc: A No-Brainer
|
 |
|
let-down
|  |
Home (What to Expect): Abdomen
Feeding: Breastfeeding Procedure
|
 |
|
in newborn
|  |
Physical
Examination
Three Common Reflexes of Newborns
|
 |
|
rooting
|  |
Three Common Reflexes of Newborns
Feeding: Breastfeeding Procedure
|
 |
|
in spinal cord injury
|  |
Spinal Cord Disorders: Symptoms
|
 |
|
testing of
|  |
Physical
Examination: Reflexes
Reflex Arc: A No-Brainer
Diagnostic Procedures
|
 |
|
Reflexology
|  |
Manipulative and Body-Based Therapies: Reflexology
|
 |
|
Reflex sympathetic dystrophy
|  |
Types: Complex
Regional Pain Syndrome
|
 |
|
Reflux
|  |
|
 |
|
acid
|  |
Gastroesophageal
Reflux (GERD)
|
 |
|
in infants and children
|  |
Feeding
Problems: Spitting
Up
Gastroesophageal Reflux
|
 |
|
urine (vesicoureteral)
|  |
Urinary
Tract Infection (UTI)
|
 |
|
Refractive disorders
|  |
What Is Astigmatism?
Symptoms: Refractive Error
Refractive Disorders
Understanding Refraction
|
 |
|
in children
|  |
Refractive Errors in Children
|
 |
|
diagnosis of
|  |
Diagnosis: Refraction
|
 |
|
Refsum's disease
|  |
Other Rare Hereditary Disorders of Lipid Metabolism
|
 |
|
Refusal of care
|  |
Informed
Consent: Refusing
Care
|
 |
|
Regional enteritis (Crohn's disease)
|  |
Crohn's
Disease
Drugs That Reduce Bowel Inflammation
|
 |
|
Regurgitation
|  |
|
 |
|
aortic valve
|  |
Aortic Regurgitation
|
 |
|
in Marfan syndrome
|  |
Marfan
Syndrome
|
 |
|
of food
|  |
see also Nausea; Vomiting
Symptoms: Regurgitation
Feeding
Problems: Spitting
Up
Gastroesophageal Reflux
|
 |
|
in infants
|  |
Feeding
|
 |
|
mitral valve
|  |
Understanding Stenosis and Regurgitation
Mitral
Regurgitation
Rheumatic
Fever: Heart
|
 |
|
of stomach acid
|  |
Gastroesophageal
Reflux (GERD)
|
 |
|
tricuspid valve
|  |
Tricuspid
Regurgitation
|
 |
|
Rehabilitation
|  |
see also Physical therapy
Rehabilitation
Increasing the Shoulder's Range of Motion
Helping a Person Walk
What Can Interfere With Doing a Simple Task?
Just the Right Height
|
 |
|
after amputation
|  |
Specific Problems: Limb
Amputation
|
 |
|
after brain injury
|  |
Specific Problems: Brain
Injuries
|
 |
|
after fracture
|  |
Fractures: Rehabilitation
and Prognosis
|
 |
|
after heart attack
|  |
Acute
Coronary Syndromes (Heart Attack; Myocardial Infarction; Unstable
Angina): Rehabilitation
|
 |
|
after hip fracture
|  |
Specific Problems: Hip
Fracture
|
 |
|
after spinal cord injury
|  |
Specific Problems: Spinal
Injuries
|
 |
|
after sports injuries
|  |
Sports
Injuries: Rehabilitation
|
 |
|
after stroke
|  |
Specific Problems: Brain
Injuries
Specific Problems: Speech
Disorders
Stroke (CVA): Treatment
|
 |
|
in alcohol abuse
|  |
Alcohol: Detoxification
and Rehabilitation
|
 |
|
for blindness
|  |
Specific Problems: Blindness
|
 |
|
in chronic lung disease
|  |
Rehabilitation
for Lung and Airway Disorders
Chronic Obstructive Pulmonary Disease (COPD): Pulmonary Rehabilitation
|
 |
|
for drug dependence
|  |
Antianxiety
and Sedative Drugs: Detoxification
and Rehabilitation
Opioids: Detoxification
|
 |
|
for hearing loss
|  |
Hearing Loss and Deafness: Other Means of Coping With Hearing Loss
|
 |
|
for heart disease
|  |
Specific Problems: Heart
Disorders
|
 |
|
information resources on
|  |
D
|
 |
|
in schizophrenia
|  |
Schizophrenia: Rehabilitation
and Community Support Activities
|
 |
|
for speech disorders
|  |
Specific Problems: Speech
Disorders
|
 |
|
Rehydration solutions
|  |
Cholera: Treatment
Problems at the Destination: Traveler's
Diarrhea
|
 |
|
Reiki
|  |
Energy
Therapies: Reiki
|
 |
|
Reiter's syndrome
|  |
Other
Types of Inflammatory Arthritis: Reactive
Arthritis
|
 |
|
Relapsing fever
|  |
Other Bacterial Infections
|
 |
|
Relapsing iridocyclitis
|  |
Behçet's
Syndrome: Symptoms
|
 |
|
Relapsing polychondritis
|  |
Relapsing
Polychondritis
|
 |
|
Relaxation techniques
|  |
Mind-Body
Techniques: Relaxation
Techniques
|
 |
|
Reliability, of test
|  |
Medical
Testing Decisions: Performing
Tests and Interpreting Results
|
 |
|
REM (rapid eye movement) sleep
|  |
Sleep
Disorders
Stages of the Sleep Cycle
|
 |
|
Renal arteries
|  |
Kidneys
Viewing the Urinary Tract
Kidney's Blood Supply
|
 |
|
blockage (occlusive disease) of
|  |
Occlusive
Peripheral Arterial Disease: Renal Arteries
Occlusive
Peripheral Arterial Disease: Renal Arteries
Blockage
of the Renal Arteries
Fibromuscular Dysplasia: A Cause of Renal Artery Blockage
|
 |
|
Renal cell carcinoma
|  |
Kidney
Cancer
|
 |
|
Renal cortical necrosis
|  |
Renal
Cortical Necrosis
|
 |
|
Renal failure
|  |
see Kidney failure
|
 |
|
Renal pelvis, transitional cell carcinoma of
|  |
Renal
Pelvis and Ureter Cancer
|
 |
|
Renal tubular acidosis
|  |
Renal
Tubular Acidosis (RTA)
Some Types of Renal Tubular Acidosis

|
 |
|
Renal veins
|  |
Kidneys
Viewing the Urinary Tract
Kidney's Blood Supply
|
 |
|
blockage (thrombosis) of
|  |
Renal
Vein Thrombosis
|
 |
|
metastasis of
|  |
Kidney
Cancer: Treatment
|
 |
|
Rendu-Osler-Weber disease (hereditary hemorrhagic telangiectasia)
|  |
Hereditary
Hemorrhagic Telangiectasia
|
 |
|
Renin
|  |
High Blood Pressure: The
Body's Control of Blood Pressure
Regulating Blood Pressure: The Renin-Angiotensin-Aldosterone System
Kidneys: Regulation
of Blood Pressure
Endocrine
Glands
Major Hormones

|
 |
|
Renin-angiotensin-aldosterone system
|  |
High Blood Pressure: The
Body's Control of Blood Pressure
Regulating Blood Pressure: The Renin-Angiotensin-Aldosterone System
Kidneys: Regulation
of Blood Pressure
Adrenal Gland Disorders
Hyperaldosteronism
|
 |
|
Renovascular hypertension
|  |
Occlusive
Peripheral Arterial Disease: Renal Arteries
|
 |
|
Repaglinide
|  |
Oral Antihyperglycemic Drugs
|
 |
|
Reproductive system
|  |
|
 |
|
birth defects of
|  |
Genital
Defects
|
 |
|
development of
|  |
Physical
Development
|
 |
|
failure of (infertility)
|  |
Infertility
What Causes Infertility in Men?
|
 |
|
female
|  |
Major Organ Systems
Biology
of the Female Reproductive System
External Female Genital Organs
Internal Female Genital Organs
Changes During the Menstrual Cycle
|
 |
|
age-associated changes in
|  |
Effects
of Aging
Changes
in the Body: Reproductive
Organs
|
 |
|
cancer of
|  |
Cancers
of the Female Reproductive System
Staging Cancers of the Female
Reproductive System
|
 |
|
evaluation of
|  |
Gynecologic
Evaluation
|
 |
|
male
|  |
Major Organ Systems
Biology
of the Male Reproductive System
Male Reproductive Organs
|
 |
|
age-associated changes in
|  |
Effects
of Aging
Changes
in the Body: Reproductive
Organs
|
 |
|
birth defects of
|  |
Other Birth Defects
|
 |
|
maturation of
|  |
see Puberty
|
 |
|
Research studies
|  |
The Science of Medicine: Comparing Apples to Apples
|
 |
|
Reserpine, in elderly persons
|  |
Some Drugs Particularly
Likely to Cause Problems in Older People
|
 |
|
Resident flora
|  |
Resident
Flora
|
 |
|
Resistance
|  |
|
 |
|
to disease
|  |
see Immune system; Immunization
|
 |
|
drug
|  |
Tolerance and Resistance
|
 |
|
Resistance training
|  |
Starting an Exercise
Program: Strength
Training
|
 |
|
Resistin
|  |
Major Hormones

|
 |
|
Resources for help and information
|  |
Resources
for Help and Information
|
 |
|
Respiration
|  |
see also Breath; Breathing
|
 |
|
artificial
|  |
see Resuscitation, cardiopulmonary (CPR)
|
 |
|
Cheyne-Stokes
|  |
Heart Failure: Symptoms
Sleep Apnea: Symptoms
Stupor
and Coma: Symptoms
Stupor
and Coma: Physical Examination
|
 |
|
Respirator
|  |
see Ventilation, mechanical
|
 |
|
Respiratory acidosis
|  |
Acidosis
Major Causes of Respiratory Acidosis and Alkalosis
|
 |
|
Respiratory alkalosis
|  |
Major Causes of Respiratory Acidosis and Alkalosis
Alkalosis
|
 |
|
Respiratory bronchiolitis-associated interstitial lung disease
|  |
Comparing Types Of Idiopathic Interstitial Pneumonias
Idiopathic
Interstitial Pneumonias: Respiratory
Bronchiolitis-Associated Interstitial Lung Disease and Desquamative
Interstitial Pneumonia
|
 |
|
Respiratory center, in premature infant
|  |
Apnea
of Prematurity
|
 |
|
Respiratory distress syndrome
|  |
Acute
Respiratory Distress Syndrome (ARDS)
Causes of Acute Respiratory Distress Syndrome
|
 |
|
in premature infant
|  |
Prematurity: Underdeveloped
Lungs
Respiratory
Distress Syndrome
|
 |
|
Respiratory failure
|  |
Respiratory
Failure
What Causes Respiratory Failure?

|
 |
|
Respiratory infections
|  |
see also Bronchitis; Pneumonia; SARS
Common
Cold
Influenza
|
 |
|
in children
|  |
Respiratory
Tract Infections
|
 |
|
severe acute (SARS)
|  |
Severe Acute
Respiratory Syndrome (SARS)
|
 |
|
Respiratory syncytial virus (RSV) infection
|  |
Bronchiolitis
|
 |
|
Respiratory system
|  |
see also Airways; Lungs
Major Organ Systems
Respiratory
System
|
 |
|
Respiratory therapy
|  |
Chest
Physical Therapy
|
 |
|
in cystic fibrosis
|  |
Cystic Fibrosis (CF): Treatment
|
 |
|
Respite care
|  |
Services to Know About
|
 |
|
Resting tremor
|  |
Tremor: Resting Tremor
|
 |
|
Restraints, for delirious person
|  |
Delirium: Treatment
|
 |
|
Resuscitation
|  |
|
 |
|
cardiopulmonary (CPR)
|  |
Medical Terms Related to Life-Sustaining Treatment
Cardiac
Arrest: First-Aid Treatment
Opening an Airway in an Adult
Performing Chest Compressions in an Adult
Performing Chest Compressions in a Child
|
 |
|
in hypothermia
|  |
Hypothermia: Treatment
|
 |
|
order against
|  |
Do-Not-Resuscitate (DNR) Orders
|
 |
|
of dying person
|  |
Treatment
Options: Resuscitation
|
 |
|
of newborn
|  |
Fetus
or Newborn Problems: Breathing
Problems
|
 |
|
Retardation, mental
|  |
see Mental retardation
|
 |
|
Retching
|  |
see Nausea; Vomiting
|
 |
|
Reticulocyte count
|  |
Diagnosis: Reticulocyte
Count
|
 |
|
Reticulum cell sarcoma
|  |
Bone
and Joint Tumors: Lymphoma
of Bone
|
 |
|
Retina
|  |
see also Eye(s)
An Inside Look at the Eye
Structure and Function
Retinal
Disorders
Viewing the Retina
|
 |
|
age-associated changes in
|  |
Effects
of Aging
|
 |
|
cancer of
|  |
Cancers
Affecting the Retina
Retinoblastoma
|
 |
|
cytomegalovirus infection in
|  |
Cytomegalovirus (CMV) Infection: Symptoms
|
 |
|
degeneration of
|  |
see also Retinopathy
Retinitis
Pigmentosa
|
 |
|
detachment of
|  |
Symptoms: Floaters
Blunt Injuries to the Eye: Retinal
Detachment
Uveitis: Symptoms
Detachment
of the Retina
|
 |
|
in Marfan syndrome
|  |
Marfan
Syndrome
|
 |
|
diabetes and
|  |
Diabetes Mellitus (DM): Complications
Long-Term Complications of Diabetes
Diabetic
Retinopathy
|
 |
|
disorders of
|  |
see also Retinopathy
Retinal
Disorders
|
 |
|
electroretinography of
|  |
Diagnosis: Electroretinography
|
 |
|
examination of
|  |
Diagnosis: Ophthalmoscopy
What Is an Ophthalmoscope?
|
 |
|
in heart disease
|  |
Diagnosis: Medical
History and Physical Examination
|
 |
|
in high blood pressure
|  |
High Blood Pressure: Diagnosis
Hypertensive
Retinopathy
|
 |
|
in premature infant
|  |
Retinopathy
of Prematurity (ROP)
|
 |
|
in retinal vessel blockage
|  |
Blockage
of Central Retinal Arteries and Veins: Diagnosis
|
 |
|
hemorrhage from
|  |
|
 |
|
altitude sickness and
|  |
Altitude Illness: Other Symptoms
|
 |
|
high blood pressure and
|  |
High Blood Pressure: Diagnosis
Hypertensive
Retinopathy
|
 |
|
macular degeneration of
|  |
Age-Related
Macular Degeneration
|
 |
|
membrane over
|  |
Epiretinal
Membrane
|
 |
|
Retinal artery
|  |
Muscles, Nerves,
and Blood Vessels
Retinal
Disorders
Viewing the Retina
|
 |
|
blockage of
|  |
Blockage
of Central Retinal Arteries and Veins
|
 |
|
Retinal vein
|  |
Viewing the Retina
|
 |
|
blockage of
|  |
Blockage
of Central Retinal Arteries and Veins
|
 |
|
Retinitis pigmentosa
|  |
Retinitis
Pigmentosa
|
 |
|
Retinoblastoma
|  |
Retinoblastoma
|
 |
|
Retinocytoma
|  |
Retinoblastoma: Prognosis and
Treatment
|
 |
|
Retinoic acid
|  |
Acute
Myelocytic Leukemia (AML): Treatment
|
 |
|
Retinol (vitamin A)
|  |
Vitamins
Vitamin
A
|
 |
|
deficiency of
|  |
Vitamin
A: Vitamin
A Deficiency
|
 |
|
corneal disorders with
|  |
Corneal
Ulcer
Keratomalacia
|
 |
|
excess of
|  |
Vitamin
A: Vitamin
A Excess
|
 |
|
Retinopathy
|  |
see also Retina
|
 |
|
in diabetes
|  |
Diabetes Mellitus (DM): Complications
Long-Term Complications of Diabetes
Diabetic
Retinopathy
|
 |
|
in high blood pressure
|  |
High Blood Pressure: Diagnosis
Hypertensive
Retinopathy
|
 |
|
of prematurity
|  |
Preventive
Health Care Visits
Retinopathy
of Prematurity (ROP)
|
 |
|
Retirement
|  |
|
 |
|
aging and
|  |
Life-Changing Events: Retirement
|
 |
|
Retirement communities
|  |
Retirement
Communities
|
 |
|
Retractile testes
|  |
Undescended
and Retractile Testes
|
 |
|
Retrograde ejaculation
|  |
Retrograde
Ejaculation
|
 |
|
Retrograde urethrography
|  |
Bladder
Infection (Cystitis): Diagnosis
|
 |
|
Retrograde urography
|  |
Diagnostic Procedures
|
 |
|
Retroperitoneal abscess
|  |
Abdominal
Abscesses: Causes and Symptoms
|
 |
|
Retropharyngeal abscess
|  |
Retropharyngeal
Abscess
Pharyngitis (Sore
Throat)
|
 |
|
Retrovirus
|  |
What Is a Retrovirus?
|
 |
|
Rett syndrome
|  |
Comparing Autism Spectrum Disorders
Autism
Spectrum Disorders: Rett
Syndrome
|
 |
|
Reverse transcriptase inhibitors
|  |
Human
Immunodeficiency Virus HIV Infection: Antiretroviral
Drugs
Human
Immunodeficiency Virus (HIV) Infection: Drug Treatment
|
 |
|
Reye's syndrome
|  |
Risk Factors: Age
Fever: Diagnosis and
Treatment
Viral
Infections
What Is Reye's Syndrome?
Chickenpox: Symptoms and
Diagnosis
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