Diseases of the heart, vascular diseases of the brain and diseases of blood vessels
Cardiovascular Diseases are responsible for over 17.3 million deaths per year and are the leading causes of death in the world
Benign Tumors
Do not penetrate (invade) adjacent tissue borders, nor do they spread (metastasize) to distant sites
Remain localized overgrowths in the area in which they arise
Are more differentiated than malignant tumors, that is, they closely resemble their tissue of origin
Malignant Tumors
Are capable of invasion (spread of the neoplasms into adjacent structures) and metastasis (implantation of the neoplasms into non-contiguous sites)
Chronic Obstructive Pulmonary Disease (COPD)
A life-threatening lung disease that interferes with normal breathing
Almost 90% of COPD deaths occur in low- and middle-income countries
Primary cause of COPD
Tobacco smoke (through tobacco use or second-hand smoke)
COPD is not curable, but treatment can slow the progress of the disease
Total deaths from COPD are projected to increase by more than 30% in the next 10 years without interventions to cut risks, particularly exposure to tobacco smoke
COPD
Characterized by persistent respiratory symptoms and airflow limitation that is not fully reversible
Requires the presence of chronic airflow obstruction, determined by spirometry
Persistent reduction in forced expiratory flow rates is the most typical finding
Increases in the residual volume and the residual volume/total lung capacity ratio, non-uniform distribution of ventilation, and ventilation-perfusion mismatching
COPD Risk Factors
Cigarette smoking (packs/year is the most highly significant predictor)
Respiratory infections (important causes of COPD exacerbation)
Occupational exposures (coal mining, gold mining, and cotton textile dust)
Ambient air pollution (prolonged exposure to smoke produced by biomass combustion)
COPD Clinical Presentation
The three most common symptoms are cough, sputum production, and exertional dyspnea
Development of airflow obstruction is a gradual process, many patients date the onset of their disease to an acute illness or exacerbation
Development of exertional dyspnea (increased effort to breathe, heaviness, air hunger, or gasping, can be insidious)
As COPD advances, the principal feature is worsening dyspnea on exertion
COPD Physical Examination
In patients with more severe disease, the physical examination of the lungs is notable for a prolonged expiratory phase and may include expiratory wheezing
Patients with severe airflow obstruction may also exhibit use of accessory muscles of respiration, sitting in the characteristic "tripod" position to facilitate the actions of the sternocleidomastoid, scalene, and intercostal muscles
Patients may develop cyanosis, visible in the lips and nail beds
Diseases Caused by Tobacco Use
Coronary heart disease
Atherosclerotic peripheral vascular disease
Cerebrovascular disease
Cancers of the lung, larynx, mouth, esophagus, bladder, pancreas, kidney, and cervix
Chronic
COPD
Gradual development of airflow obstruction
Many patients date onset to acute illness or exacerbation
Principal feature is worsening dyspnea on exertion
Exertional dyspnea
Increased effort to breathe, heaviness, air hunger, or gasping
In patients with more severe disease, the physical examination of the lungs is notable for a prolonged expiratory phase and may include expiratory wheezing
Patients with severe airflow obstruction may also exhibit use of accessory muscles of respiration, sitting in the characteristic "tripod" position to facilitate the actions of the sternocleidomastoid, scalene, and intercostal muscles
Patients may develop cyanosis, visible in the lips and nail beds
Diseases caused by tobacco use
Coronary heart disease
Atherosclerotic peripheral vascular disease
Cerebrovascular disease
Cancers of the lung, larynx, mouth, esophagus, bladder, pancreas, kidney, and cervix
Chronic obstructive pulmonary disease
Intrauterine growth retardation, premature rupture of membranes
Low-birth weight babies, perinatal mortality
Cataract, macular degeneration
Peptic ulcer disease
Possibly liver, stomach, and colorectal cancers and acute myelocytic leukemia
Involuntary smoking (environmental tobacco smoke) is a cause of lung cancer and coronary heart disease in nonsmokers, and respiratory infections and symptoms in the children of parents who smoke
Diseases caused by smokeless tobacco
Oral Cancer
Oral leukoplakia
Dental caries (possibly)
Diabetes
More than 346 million people worldwide have diabetes, there is an emerging global epidemic of diabetes that can be traced back to rapid increases in overweight, obesity and physical inactivity
Diabetes is predicted to become the seventh leading cause of death in the world by the year 2030, total deaths from diabetes are projected to rise by more than 50% in the next 10 years
Diabetes
Cardiovascular disease is responsible for between 50% and 80% of deaths in people with diabetes
Diabetes has become one of the major causes of premature illness and death in most countries, mainly through the increased risk of cardiovascular disease (CVD)
Diabetes is a leading cause of blindness, amputation and kidney failure
Lack of awareness about diabetes, combined with insufficient access to health services and essential medicines, can lead to complications such as blindness, amputation and kidney failure
Type 1 Diabetes Mellitus
Due to autoimmune B-cell destruction, usually leading to absolute insulin deficiency, characterized by a lack of insulin production
Type 1 diabetes is much more common than type 1 diabetes, accounts for around 90% of all diabetes worldwide
Type 2 Diabetes Mellitus
Due to progressive loss of B-cell insulin secretion, frequently on the background of insulin resistance, results from the body's ineffective use of insulin
Type 2 diabetes can be prevented - 30 minutes of moderate-intensity physical activity on most days and a healthy diet can drastically reduce the risk of developing type 2 diabetes
Diabetes diagnosis
Plasma glucose 126 mg/dL (7.0 mmol/L) after an overnight fast
Two-hour plasma glucose > 200 mg/dl (11.1 mmol/l) during a 75-gram Oral Glucose Tolerance Test
Random plasma glucose > 200 mg/dl (11.1 mmol/l) in a patient with classic symptoms of hyperglycemia (weight loss, polyuria, polyphagia, polydipsia) or with signs and symptoms of hyperglycemic crisis
Gestational Diabetes
Characterized by hyperglycemia, or raised blood sugar, which has first appeared or been recognized during pregnancy