Invited lecture by Dr Sujoy Dasgupta in the Webinar on "Sexual Dysfunction" organized by the BOGS (Bengal Obstetric and Gynaecological Society) and the Sexual Medicine Committee of FOGSI (federation of Obstetric and Gynaecological Societies of India) held in September, 2021
Invited lecture by Dr Sujoy Dasgupta in the Webinar on "Sexual Dysfunction" organized by the BOGS (Bengal Obstetric and Gynaecological Society) and the Sexual Medicine Committee of FOGSI (federation of Obstetric and Gynaecological Societies of India) held in September, 2021
Erectile Dysfunction: New Paradigms in Treatment Ranjith Ramasamy
1. Discuss diagnosis of erectile dysfunction
2. Treatments of ED using Viagra, Cialis, Trimix (intracavernosal injections)
3. Evaluate penile prosthesis and implant as ED surgical therapy options
Erectile Dysfunction Treatment Without Medication or OperationBetterBlue
The most significant medical revolution in the treatment of erectile dysfunction (ED) over the past 15 years. No medication and operation. High success rate and without side effect
Erectile Dysfunction Symptoms And TreatmentManas Das
This presentation describes Symptoms And Treatment of Erectile Dysfunction which is a very common diseases in men.Erectile Dysfunction can be cure easily if proper treatment will be taken.To identify Erectile Dysfunction some symptoms are there which can help you.
ED is the inability to get or keep an
erection firm enough for sexual intercourse. ED can be a total inability to
achieve an erection, an inconsistent ability to do so, or a tendency to sustain
only brief erections.
ED is sometimes called impotence, but that
word is being used less often so that it will not be confused with other,
nonmedical meanings of the term.
The National Institutes of Health estimates
that ED affects as many as 30 million men in the United States. Incidence
increases with age: About 4 percent of men in their 50s and nearly 17 percent
of men in their 60s experience a total inability to achieve an erection. The
incidence jumps to 47 percent for men older than 75. But ED is not an
inevitable part of aging. ED is treatable at any age.
By: Ayman Rashed,MD
ejaculatory disorders are always bothering. premature, delayed ejaculation, or anejaculation are all challenging both in diagnosis or treatment
Invited lecture delivered by Dr Sujoy Dasgupta in a Webinar organized by Sexual medicine Committee of FOGSI (Federation of Obstetric and Gynaecological Societies of India), held in February, 2022
Premature Ejaculation Treatment in Delhi | Clinical Management of Premature E...Vijayant Govinda Gupta
This presentation discusses clinical case scenarios for management of premature ejaculation in Delhi India.
This slides contain
1. Definition of Premature Ejacualtion
2. Management Aids
3. Clinical algorithm
4. Novel treatment modalities
female sexual dysfunction
For More Medicine Free PPT - http://playnever.blogspot.com/
For Health benefits and medicine videos Subscribe youtube channel - https://www.youtube.com/playlist?list=PLKg-H-sMh9G01zEg4YpndngXODW2bq92w
Erectile Dysfunction: New Paradigms in Treatment Ranjith Ramasamy
1. Discuss diagnosis of erectile dysfunction
2. Treatments of ED using Viagra, Cialis, Trimix (intracavernosal injections)
3. Evaluate penile prosthesis and implant as ED surgical therapy options
Erectile Dysfunction Treatment Without Medication or OperationBetterBlue
The most significant medical revolution in the treatment of erectile dysfunction (ED) over the past 15 years. No medication and operation. High success rate and without side effect
Erectile Dysfunction Symptoms And TreatmentManas Das
This presentation describes Symptoms And Treatment of Erectile Dysfunction which is a very common diseases in men.Erectile Dysfunction can be cure easily if proper treatment will be taken.To identify Erectile Dysfunction some symptoms are there which can help you.
ED is the inability to get or keep an
erection firm enough for sexual intercourse. ED can be a total inability to
achieve an erection, an inconsistent ability to do so, or a tendency to sustain
only brief erections.
ED is sometimes called impotence, but that
word is being used less often so that it will not be confused with other,
nonmedical meanings of the term.
The National Institutes of Health estimates
that ED affects as many as 30 million men in the United States. Incidence
increases with age: About 4 percent of men in their 50s and nearly 17 percent
of men in their 60s experience a total inability to achieve an erection. The
incidence jumps to 47 percent for men older than 75. But ED is not an
inevitable part of aging. ED is treatable at any age.
By: Ayman Rashed,MD
ejaculatory disorders are always bothering. premature, delayed ejaculation, or anejaculation are all challenging both in diagnosis or treatment
Invited lecture delivered by Dr Sujoy Dasgupta in a Webinar organized by Sexual medicine Committee of FOGSI (Federation of Obstetric and Gynaecological Societies of India), held in February, 2022
Premature Ejaculation Treatment in Delhi | Clinical Management of Premature E...Vijayant Govinda Gupta
This presentation discusses clinical case scenarios for management of premature ejaculation in Delhi India.
This slides contain
1. Definition of Premature Ejacualtion
2. Management Aids
3. Clinical algorithm
4. Novel treatment modalities
female sexual dysfunction
For More Medicine Free PPT - http://playnever.blogspot.com/
For Health benefits and medicine videos Subscribe youtube channel - https://www.youtube.com/playlist?list=PLKg-H-sMh9G01zEg4YpndngXODW2bq92w
Premature Ejaculation seems to be a neurobiological problem that is related to low serotonin levels in those regions of the central nervous system that regulate ejaculation (brain and spinal cord).
In this infographic we try to answer the questions "What happens in Premature Ejaculation (PE)", "What are the features of PE?", |How many types there are" and finally "Can a man with PE be helped"
Postprostatectomy sexual problems are not limited to erectile dysfunction. Patients and surgeons must also pay attention to orgasmic problems, ejaculatory pain, infertility, climacturia and etc.
Deleterious Effects Of Antidepressants On Semen Parameters: A Case ReportAhmed Elaghoury
Please cite as follows: Shehatto K, Abed M, Elaghoury A. Deleterious Effects Of Antidepressants On Semen Parameters: A Case Report. Poster presented at: Psychiatry of the 21st Century: Context, Controversies and Commitment. The World Psychiatric Association 17th WORLD CONGRESS OF PSYCHIATRY; 2017 Oct 8-12; Berlin, Germany.
DOI: 10.13140/RG.2.2.15518.64321
Premature Ejaculation is the most common form of sexual dysfunction and currently available therapies are not optimal. Recently, several biotech companies and researchers developed mechanical devices for the treatment of premature ejaculation but further clinical data are warranted.
Invited Lecture by Dr Sujoy Dasgupta in a webinar- COGNIZANCE 2021, by Perinthalmanna Ob-Gyn Society, Kerala Federation of Obgyn and FOGSI, held in June, 2021
Premature ejaculation is defined as persistent or recurrent ejaculation with minimal sexual stimulation before, upon, or shortly after penetration and before it is wished by the man or his partner
Premature ejaculation is the most common male sexual dysfunction. It affects about a third of men at various times in their lives, with little variation depending on age and continent.
ARTIFICIAL INTELLIGENCE IN HEALTHCARE.pdfAnujkumaranit
Artificial intelligence (AI) refers to the simulation of human intelligence processes by machines, especially computer systems. It encompasses tasks such as learning, reasoning, problem-solving, perception, and language understanding. AI technologies are revolutionizing various fields, from healthcare to finance, by enabling machines to perform tasks that typically require human intelligence.
Flu Vaccine Alert in Bangalore Karnatakaaddon Scans
As flu season approaches, health officials in Bangalore, Karnataka, are urging residents to get their flu vaccinations. The seasonal flu, while common, can lead to severe health complications, particularly for vulnerable populations such as young children, the elderly, and those with underlying health conditions.
Dr. Vidisha Kumari, a leading epidemiologist in Bangalore, emphasizes the importance of getting vaccinated. "The flu vaccine is our best defense against the influenza virus. It not only protects individuals but also helps prevent the spread of the virus in our communities," he says.
This year, the flu season is expected to coincide with a potential increase in other respiratory illnesses. The Karnataka Health Department has launched an awareness campaign highlighting the significance of flu vaccinations. They have set up multiple vaccination centers across Bangalore, making it convenient for residents to receive their shots.
To encourage widespread vaccination, the government is also collaborating with local schools, workplaces, and community centers to facilitate vaccination drives. Special attention is being given to ensuring that the vaccine is accessible to all, including marginalized communities who may have limited access to healthcare.
Residents are reminded that the flu vaccine is safe and effective. Common side effects are mild and may include soreness at the injection site, mild fever, or muscle aches. These side effects are generally short-lived and far less severe than the flu itself.
Healthcare providers are also stressing the importance of continuing COVID-19 precautions. Wearing masks, practicing good hand hygiene, and maintaining social distancing are still crucial, especially in crowded places.
Protect yourself and your loved ones by getting vaccinated. Together, we can help keep Bangalore healthy and safe this flu season. For more information on vaccination centers and schedules, residents can visit the Karnataka Health Department’s official website or follow their social media pages.
Stay informed, stay safe, and get your flu shot today!
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Ve...kevinkariuki227
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Verified Chapters 1 - 19, Complete Newest Version.pdf
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Verified Chapters 1 - 19, Complete Newest Version.pdf
These lecture slides, by Dr Sidra Arshad, offer a quick overview of physiological basis of a normal electrocardiogram.
Learning objectives:
1. Define an electrocardiogram (ECG) and electrocardiography
2. Describe how dipoles generated by the heart produce the waveforms of the ECG
3. Describe the components of a normal electrocardiogram of a typical bipolar leads (limb II)
4. Differentiate between intervals and segments
5. Enlist some common indications for obtaining an ECG
Study Resources:
1. Chapter 11, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 9, Human Physiology - From Cells to Systems, Lauralee Sherwood, 9th edition
3. Chapter 29, Ganong’s Review of Medical Physiology, 26th edition
4. Electrocardiogram, StatPearls - https://www.ncbi.nlm.nih.gov/books/NBK549803/
5. ECG in Medical Practice by ABM Abdullah, 4th edition
6. ECG Basics, http://www.nataliescasebook.com/tag/e-c-g-basics
Acute scrotum is a general term referring to an emergency condition affecting the contents or the wall of the scrotum.
There are a number of conditions that present acutely, predominantly with pain and/or swelling
A careful and detailed history and examination, and in some cases, investigations allow differentiation between these diagnoses. A prompt diagnosis is essential as the patient may require urgent surgical intervention
Testicular torsion refers to twisting of the spermatic cord, causing ischaemia of the testicle.
Testicular torsion results from inadequate fixation of the testis to the tunica vaginalis producing ischemia from reduced arterial inflow and venous outflow obstruction.
The prevalence of testicular torsion in adult patients hospitalized with acute scrotal pain is approximately 25 to 50 percent
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NVBDCP.pptx Nation vector borne disease control programSapna Thakur
NVBDCP was launched in 2003-2004 . Vector-Borne Disease: Disease that results from an infection transmitted to humans and other animals by blood-feeding arthropods, such as mosquitoes, ticks, and fleas. Examples of vector-borne diseases include Dengue fever, West Nile Virus, Lyme disease, and malaria.
Report Back from SGO 2024: What’s the Latest in Cervical Cancer?bkling
Are you curious about what’s new in cervical cancer research or unsure what the findings mean? Join Dr. Emily Ko, a gynecologic oncologist at Penn Medicine, to learn about the latest updates from the Society of Gynecologic Oncology (SGO) 2024 Annual Meeting on Women’s Cancer. Dr. Ko will discuss what the research presented at the conference means for you and answer your questions about the new developments.
Title: Sense of Taste
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the structure and function of taste buds.
Describe the relationship between the taste threshold and taste index of common substances.
Explain the chemical basis and signal transduction of taste perception for each type of primary taste sensation.
Recognize different abnormalities of taste perception and their causes.
Key Topics:
Significance of Taste Sensation:
Differentiation between pleasant and harmful food
Influence on behavior
Selection of food based on metabolic needs
Receptors of Taste:
Taste buds on the tongue
Influence of sense of smell, texture of food, and pain stimulation (e.g., by pepper)
Primary and Secondary Taste Sensations:
Primary taste sensations: Sweet, Sour, Salty, Bitter, Umami
Chemical basis and signal transduction mechanisms for each taste
Taste Threshold and Index:
Taste threshold values for Sweet (sucrose), Salty (NaCl), Sour (HCl), and Bitter (Quinine)
Taste index relationship: Inversely proportional to taste threshold
Taste Blindness:
Inability to taste certain substances, particularly thiourea compounds
Example: Phenylthiocarbamide
Structure and Function of Taste Buds:
Composition: Epithelial cells, Sustentacular/Supporting cells, Taste cells, Basal cells
Features: Taste pores, Taste hairs/microvilli, and Taste nerve fibers
Location of Taste Buds:
Found in papillae of the tongue (Fungiform, Circumvallate, Foliate)
Also present on the palate, tonsillar pillars, epiglottis, and proximal esophagus
Mechanism of Taste Stimulation:
Interaction of taste substances with receptors on microvilli
Signal transduction pathways for Umami, Sweet, Bitter, Sour, and Salty tastes
Taste Sensitivity and Adaptation:
Decrease in sensitivity with age
Rapid adaptation of taste sensation
Role of Saliva in Taste:
Dissolution of tastants to reach receptors
Washing away the stimulus
Taste Preferences and Aversions:
Mechanisms behind taste preference and aversion
Influence of receptors and neural pathways
Impact of Sensory Nerve Damage:
Degeneration of taste buds if the sensory nerve fiber is cut
Abnormalities of Taste Detection:
Conditions: Ageusia, Hypogeusia, Dysgeusia (parageusia)
Causes: Nerve damage, neurological disorders, infections, poor oral hygiene, adverse drug effects, deficiencies, aging, tobacco use, altered neurotransmitter levels
Neurotransmitters and Taste Threshold:
Effects of serotonin (5-HT) and norepinephrine (NE) on taste sensitivity
Supertasters:
25% of the population with heightened sensitivity to taste, especially bitterness
Increased number of fungiform papillae
Tom Selleck Health: A Comprehensive Look at the Iconic Actor’s Wellness Journeygreendigital
Tom Selleck, an enduring figure in Hollywood. has captivated audiences for decades with his rugged charm, iconic moustache. and memorable roles in television and film. From his breakout role as Thomas Magnum in Magnum P.I. to his current portrayal of Frank Reagan in Blue Bloods. Selleck's career has spanned over 50 years. But beyond his professional achievements. fans have often been curious about Tom Selleck Health. especially as he has aged in the public eye.
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Introduction
Many have been interested in Tom Selleck health. not only because of his enduring presence on screen but also because of the challenges. and lifestyle choices he has faced and made over the years. This article delves into the various aspects of Tom Selleck health. exploring his fitness regimen, diet, mental health. and the challenges he has encountered as he ages. We'll look at how he maintains his well-being. the health issues he has faced, and his approach to ageing .
Early Life and Career
Childhood and Athletic Beginnings
Tom Selleck was born on January 29, 1945, in Detroit, Michigan, and grew up in Sherman Oaks, California. From an early age, he was involved in sports, particularly basketball. which played a significant role in his physical development. His athletic pursuits continued into college. where he attended the University of Southern California (USC) on a basketball scholarship. This early involvement in sports laid a strong foundation for his physical health and disciplined lifestyle.
Transition to Acting
Selleck's transition from an athlete to an actor came with its physical demands. His first significant role in "Magnum P.I." required him to perform various stunts and maintain a fit appearance. This role, which he played from 1980 to 1988. necessitated a rigorous fitness routine to meet the show's demands. setting the stage for his long-term commitment to health and wellness.
Fitness Regimen
Workout Routine
Tom Selleck health and fitness regimen has evolved. adapting to his changing roles and age. During his "Magnum, P.I." days. Selleck's workouts were intense and focused on building and maintaining muscle mass. His routine included weightlifting, cardiovascular exercises. and specific training for the stunts he performed on the show.
Selleck adjusted his fitness routine as he aged to suit his body's needs. Today, his workouts focus on maintaining flexibility, strength, and cardiovascular health. He incorporates low-impact exercises such as swimming, walking, and light weightlifting. This balanced approach helps him stay fit without putting undue strain on his joints and muscles.
Importance of Flexibility and Mobility
In recent years, Selleck has emphasized the importance of flexibility and mobility in his fitness regimen. Understanding the natural decline in muscle mass and joint flexibility with age. he includes stretching and yoga in his routine. These practices help prevent injuries, improve posture, and maintain mobilit
7. Estimated IELT Reported by Men with “ Normal ” Ejaculation and by their Partners Sotomayor M. J Sex Med 2 (Suppl 2): 110-114, 2005. Estimated IELT (minutes) Men Women USA 13.6 11.2 UK 9.9 8.5 France 9.3 8.4 Germany 6.9 7.4 Italy 9.6 8.6
8. A MultiNational Survey of IELT 500 couples >age 18 in Netherlands, UK, Spain, Turkey and US Not selected for ejaculatory status or co-morbidities IELT measured by stop-watch for 4 weeks ----------------------------------------------------------------------------------------------- RESULTS by Country (Median IELT in minutes) Netherlands UK Spain Turkey US ALL 5.1 7.6 5.8 3.7 7.0 5.4 ----------------------------------------------------------------------------------------------- ----------------------------------------------------------------------------------------------- Waldinger MD, Quinn P, Dilleen M et al. J Sex Med 2:492-7, 2005.
9.
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11. Prevalence of PE is similar across countries 1. Porst et al, 2007. 2. Janssen-Cilag Data On File 2009 PEPA (Premature Ejaculation Perceptions and Attitudes) Study * Men classified as having PE if low / absent control over ejaculation that is viewed as a problem by men or/ their partners ** Men classified as having PE or Probable PE by PEDT diagnosis ** ** * * * *
12.
13. Normal Male Sexual Response Time Sexual interest/ stimulation Penile tumescence High arousal / penile erection Plateau Orgasm Ejaculation accompanied by orgasm Penile detumescence Resolution Adapted from Donatucci (2006) J Sex Med 3(suppl 4):303–308 Excitement Penetration
14. Premature Ejaculation Time Rapid ejaculation and associated orgasm with normal erection Normal response Adapted from Donatucci (2006) J Sex Med 3(suppl 4):303–308 Short plateau phase Steep excitement phase with normal erection PE
15. What percentage of men with PE might want treatment? Authors Percent Rowland et al ( JSexMed 1:225, 2004) 50% Carson et al ( JUrol 169 Suppl 2003) 24% Brock et al ( JUrol 177 Suppl 2007) 38%
19. New topical penile spray using a combination of lidocaine and prilocaine to treat PE DB PC phase 2 study of 43 men with PE Drug Placebo Number of men 20 23 Baseline IELT (min) 1.0 0.9 Follow-up (min) 4.9 1.6 Dinsmore WW et al. BJU International 99:369-375, 2007 (Feb)
20. Efficacy of Sildenafil for Premature Ejaculation and Post-Ejaculatory Refractory Time Double-blind placebo-controlled study 157 men with PE ages 18-65 (mean 43 yrs) Compared flexible-dose sildenafil (50-100 mg) to placebo Results: No signficant difference between sildenafil and placebo in IELT Sildenafil-treated men had greater ejaculatory control and sexual satisfaction scores Sildenafil-treated men had decreased post-ejaculatory refractory time McMahon CG, Stuckey BGA, Andersen M, et al. J Sex Med 2: 368-375, 2005
21. FIG 1 The mechanism of ejaculation 2005 BJU International 95, 1181-1186 ejaculate
22. Neurophysiology of Ejaculation Motor supply to bulbospongiosus muscle Pudendal nerve Sensory inputs from genital areas Supraspinal Centres Spinothalamic cells L3-L4: Coordination of spinal nuclei Hypogastric Plexus ~ T12-L1: Emission Spinal Reflex S1-S3: Expulsion afferent efferent Giuliano & Clement (2005) Ann Rev Sex Res 16:190–216 Higher brain Centres Excitatory & inhibitory control Sympathetic supply to: Epididymis, Vas deferens Seminal Vesicles Prostate Pons: nPGi: Nucleus paragigantocellularis Dorsal nerve of penis
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27. Dapoxetine (Priligy) A highly potent inhibitor of serotonin reuptake transporter Following oral administration, it is rapidly absorbed After reaching T max, serum concentration declines rapidly At 60 mg dose: 1 T max = 1.2 hr T ½ initial = 1.5 hr Single dose and multiple dose pharmacokinetics are similar 1 No interaction when used with food 2 , alcohol 3 or PDE5 inhibitors 4 1 Dresser M, et al. Clin Pharmacol Therap 32:2004. Abstract Pl-113 2 Dresser M, et al. J Sex Med 3 (Suppl 1):25, 2005. Abstract 37. 3 Modi N, et al. J Urol 173 (Suppl):239, 2005. Abstract 879. 4 Dresser M, et al. J Urol 173 (Suppl):201, 2005. Abstract 739.
31. Dapoxetine IELT for ≤1min & ≤0.5min Pooled IELT values at endpoint for baseline IELT ≤1min & ≤0.5min † McMahon et al. (2008) Presented at ESSM/ISSM IELT≤Imin IELT≤0.5min * Fold-increase=geometric endpoint/geometric baseline, not model based. Values are unadjusted. † Week 12 (012, 013, 3001, 3003) or last observation carried forward Fold Increase=4.3 Fold Increase=3.4 Fold Increase=2.7 Fold Increase=3.4
32. Dapoxetine Mean IELT Results Over Time (3x, NOT 3 hours) *P<0.001 vs. placebo ANCOVA * * * * * * * * Pooled study data: C-2002-012, C-2002-013, PRE-3001, PRE-3003 * * Pooled Studies
33. Dapoxetine: Most adverse events mild to moderate in severity and occurred within first 4 weeks of treatment 1. McMahon et al., 2008 2. Casey et al., 2008 3. Giuliano et al., 2008 SSRI Class Effects are not evident: No deleterious effects on mood and anxiety symptoms, suicidal ideation or withdrawal syndrome, erectile function or libido
34. Dapoxetine - Most Common Adverse Events Phase III Data - Pooled Discontinuation due to Nausea: 0.1% placebo, 0.9% 30 mg, 3.0% 60 mg Pooled data: C-2002-012, C-2002-013, PRE-3001, PRE-3002, PRE-3003
42. Medical Therapy Options for Treatment of PE - AUA Guidelines Oral Therapies Trade Names Recommended Dose Nonselective serotonin reuptake inhibitor Clomipramine Anafranil ® 25 to 50 mg/day or 25 mg 4 - 24 hr pre-intercourse Selective serotonin reuptake inhibitors Fluoxetine Prozac ® , Sarafem ® 5 to 20 mg/day Paroxetine Paxil ® 10, 20, 40 mg/day or 20 mg 3 to 4 hr pre-intercourse Sertraline Zoloft ® 25 to 200 mg/day or 50 mg 4 to 8 hr pre-intercourse Topical Therapies Trade Name Dose Lidocaine/prilocaine cream EMLA ® Cream Lidocaine 2.5%, prilocaine 2.5% 20 to 30 minutes pre-intercourse
43.
44. Slow onset of effect of SSRIs in PE sertraline washout placebo IELT (min) Weeks McMahon CG. J Urol 159:1935-8, 1998
45. Evaluating the Patient on Dapoxetine Evaluating patient responses - Does the patient want to continue on treatment? - somewhat worse, the same, somewhat better or much better? What is a successful treatment? - A 3-fold increase in IELT is considered clinically significant and adequate for patient satisfaction Managing nausea and somnolence - Antacid - Timing of sexual activity
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Editor's Notes
In an effort to overcome the limitations of traditional definitions of PE, the ISSM has developed a definition of lifelong PE based on clinical evidence. Like other definitions of PE, the ISSM definition includes three components: 1 Time to ejaculation Inability to control ejaculation Negative impact on the man The definition was developed by an ad hoc committee of international experts in PE appointed by the ISSM. The committee evaluated the strengths and weaknesses of current definitions of PE, to critique the evidence in support of the constructs of ejaculatory latency, ejaculatory control, sexual satisfaction and personal/interpersonal distress, and to propose a new evidence-based definition of PE 1 References: McMahon CG, Althof SE, Waldinger MD et al. An evidence-based definition of lifelong premature ejaculation: report of the International Society for Sexual Medicine (ISSM) ad hoc committee for the definition of premature ejaculation. J Sex Med 2008;5:1590-1606. Waldinger MD. Towards evidence-based drug treatment research on premature ejaculation: a critical evaluation of methodology. Int J Impot Res 2003;15:309-313. PRIMED PRemature Ejaculation: Identify, Manage and Educate Presentation Slide Deck Version 2.0 (08 June 2010)
Despite the lack of knowledge or consensus regarding PE aetiology, most clinicians distinguish between lifelong (previously called primary) PE, which is continuously present from the first sexual encounter, and acquired (previously called secondary) PE, which occurs following years of normal sexual function 1 It is hypothesised that lifelong PE may have a biological component to its pathophysiology, possibly involving changes in central serotonin receptor sensitivity 1 Acquired PE also has a physiological component and may be the result of psychological stressors. It may also be ‘ situational ’ , i.e. confined to certain partners or circumstances. Onset of ED can also lead to acquired or compensatory PE 1 It may also be important to discuss PE with your male patients with hyperthyroidism. Carani et al (2005) 2 demonstrated that after thyroid hormone normalisation in patients with hyperthyroidism, PE prevalence fell from 50% to 15%. This suggests a direct involvement of thyroid hormones in the physiology of ejaculation Reference: Palmer NR, Stuckey BG. Premature ejaculation: a clinical update. Med J Aust 2008;188:662-666. Carani C, Isidori AM, Granata A et al. Multicenter study on the prevalence of sexual symptoms in male hypo- and hyperthyroid patients. J Clin Endocrinol Metab 2005;90:6472-6479. PRIMED PRemature Ejaculation: Identify, Manage and Educate Presentation Slide Deck Version 2.0 (08 June 2010)
There are striking regional differences in the perception of normal IELT. There is an almost twofold difference between the estimate of normal average IELT in the USA and Germany. On the whole women estimate shorter IELT values than men – except in Germany.
The PEPA study compared PE prevalence in the USA, Germany and Italy. While the lowest incidence of PE was found in Germany and the highest in Italy, these differences were not significant. As the prevalence of this condition is similar across both age and nationality (ethnicity), it can be difficult to identify patients who have PE – if they do not self present. References: Porst H, Montorsi F, Rosen RC et al. The Premature Ejaculation Prevalence and Attitudes (PEPA) survey: prevalence, comorbidities, and professional help-seeking. Eur Urology 2007;51:816-823. Janssen-Cilag Data On File 2009 PRIMED PRemature Ejaculation: Identify, Manage and Educate Presentation Slide Deck Version 2.0 (08 June 2010)
The consistent prevalence of PE contrasts with that of erectile dysfunction (ED) which increases with age (and is discussed later in this presentation).
The normal male sexual response is a sequential process, starting with sexual stimulation, penile tumescence and erection, and culminating in ejaculation—normally associated with orgasm—followed by detumescence. This can be expressed graphically as a cycle of four phases: excitement, plateau, orgasm (and associated ejaculation), and resolution.
In men with PE, the entire ejaculatory sequence is curtailed compared with the normal sequence. A very steep excitement phase with a normal erection, is followed by a shorter plateau and a rapid ejaculation and associated orgasm. Although these features are well established, the exact etiology of PE is unknown.
This introduces the issue of pharmacological management of PE and lists some of the historical and less rationally based therapies used before ending with the SSRIs. This provide a link to the next slide…
CNS control of ejaculation is mediated via spinal ejaculation centres including lumbar spinothalamic (LSt) cells. These cells integrate peripheral signals from the genital areas with excitatory and inhibitory control from supraspinal centres such as the nucleus paragigantocellularis (nPGi). The spinal ejaculation generators send co-ordinated outputs to the anatomic structures that allow ejaculation to occur. The ejaculation reflex consists of: Emission – the generation of semen by structures including the seminal vesicles and the prostate gland Expulsion – rhythmic muscular contractions involving the bulbocavernosus muscle controlled by the pudendal nerves The lumbar spinothalamic cells constitute the spinal ejaculation generator, which integrates the sensory inputs and outputs necessary to trigger ejaculation. The spinal ejaculation generator is discussed in more detail on the following two slides (which may be too technical for some audiences).
Central control of ejaculation involved many neurotransmitter systems including serotonin (5-HT), dopamine (DA), gamma-amino butyric acid (GABA) and norepinephrine (NE). Of these, 5-HT is a major player. Serotonin cell bodies are located in distinct clusters in the brainstem and send extensive projections throughout the brain and spinal cord. The actions of serotonin are mediated via one of the most extensive receptor systems known. Seven 5-HT receptor classes, encompassing some 14 different receptors, are currently recognized. These receptors and the serotonin transporter are widely distributed with particularly high density in the hypothalamus, brainstem and spinal cord.
This slide is intended, after dismissing the topical creams and PDE5 inhibitors, to introduce the SSRIs and to demonstrate that there is a rational pharmacological base for their use.
Looking at the central ejaculatory serotoninergic neuron we find further complexity of function. It has not been fully characterized but to date, 16 different 5-HT receptors each with varying expression and activity have been identified. Neural signalling is regulated by the 5-HT1A, 1B, and 1D and the 5-HT transporter re-uptake system. Each of these mechanisms is a negative feedback system which reduces synaptic cleft 5-HT and prevents over-stimulation of the postsynaptic receptors. Additionally, activation of 5 ‑HT1 a receptor is attenuated or blocked by activation of 5 ‑HT2 c. Waldinger has hypothesized PE is due to hypersensitivity of 5-HT1A receptors or hyposensitivity of 5-HT2C receptors with differing ejaculatory “set points” . The individual variability of the central 5-HT system may also account for the sexual side effect profiles of the widely prescribed SSRI class of drugs.
Marked increases in IELT values with dapoxetine were apparent irrespective of the method of reporting data. It has been argued that IELT values are not normally distributed but rather positively skewed and thus should be reported as medians or geometric means rather than arithmetic means (Waldinger, Lancet 2006; 368:1869). These data also show the magnitude of the effect of dapoxetine on IELT, providing a 2.5- and 3-fold increase compared with placebo (30 mg and 60 mg, respectively).
Dapoxetine use is well tolerated. Non-sexual side effects with dapoxetine were transient and characteristic of compounds with serotonergic effects. Some side effects (nausea, diarrhoea and dizziness) seemed dependent on dose Cardiovascular and central nervous system side effects were reported at a low incidence In the pooled analysis, the most commonly reported adverse events were nausea, headache, diarrhoea, and dizziness. Most of these events were mild and transient, and resulted in study discontinuation in only a few cases There were no deleterious effects on erectile function or libido and the incidence of serious AEs was low (≤1% across groups). References: McMahon et al. (2008) Presented at ESSM/ISSM Casey et al. (2008) Presented at EAU; Giuliano et al. (2008) Presented at EAU PRIMED PRemature Ejaculation: Identify, Manage and Educate Presentation Slide Deck Version 2.0 (08 June 2010)
This compares several SSRIs after 6 weeks of dosing. All are effective.
This slide illustrates the point. The effect of sertraline in this crossover design takes about 2 weeks at least to be effective. The effect is also slow to wash out.